Blf278 Amplifier

sistor linear amplifier. MOS transistor. Bias disable pads facilitate integration into amplifier systems that employ automatic VSWR protection. The examples presented in Part 2 are single band HF and VHF amplifiers at the 5 W level — a par-ticularly enjoyable and educational class of amplifiers for the experimenter. DOWNLOAD!. 8RS FERR2TUBE BLF278 R1,R2 22K 1206 R3,R4 5K6 1206 150K 1206 SMD R6,R7,R8,R9 22R 4W TP1,TP2 CPFXCS FASTON 2TUBEOTTx2cm+TEFLON RSx20cm 28 /101 PM 1000 – 1 kW FM Broadcasting Transmitter - U ’ ANUAL. 2 - Module - PDF SY8120 - SILERGY - PDF APM3055L - MOSFET - PDF TDA7560A - amplifier - PDF K25N120 - Infineon - PDF UA741CN - Amplifier - PDF LC470EUN-SEF1 - LCD - PDF G8N1 - Relay - PDF ICL7137 - Converter - PDF 3SK121 - FET - PDF D2645 - 2SD2645 - PDF. This board is for repair Siel (RFB505, RFB1001, RFB1005, RFB1501, RFB2001, EXC501, EXC1001, EXC2001, EXC2005 and others similars models) amplifiers with board burned. 140-150MHZ RF POWER AMPLIFIER PALLET-SMA VHF 300WATTS with BLF278 or MRF151G new. amplifier transistor 1kw broadband and more blf278 nxp. 300w 2m SSPA (BLF278) Некоторые фото по данному PA https://yadi. Kemudian menggunakan exiter 7w di-drive ke input menghasilkan power output 300w lebih, namun kondisinya sangat kritis dan akhirnya BLF278 rusak. Abstract: bgu7041 toshiba smd marking code transistor IB3135 BIT 3713 BLF4G08LS-160 x-band mmic core chip BLF4G08LS-160A BLF278 mosfet HF amplifier TEA6848H. cooling fans amplifiers 2; INSTALLATION REQUIREMENTS. 73 shipping. The working amplifier will have the block diagram shown in Figure 1. * Low distortion Class B push-pull. Just look at this spectrum analyzer display of the unfiltered output on 40 meters:. 5-108MHz) broadband RF-amplifier ===== Resistors (values are in Ohms, metalfilm or metaloxide, unless otherwise noted) R1 = 47 (SMD chip-resistor or similar) R2 = 47 (SMD chip-resistor or similar) R3 = 3k9 (SMD chip-resistor or similar) R4 = 3k9 (1/2 watts. 88-108Mhz 250/300W FM Broadcast Linear Amplifier Including BLF278 ELCO/PHILIPS. - Amplifier efficiency is function of supply voltage, in order to obtain max efficiency please reduce supply in function of desired output power. Or maybe one of the MRF transistors. 800 MHz - 900 MHz LNA. Commercial FM 88-108 MHz The PS is 50V at 30 A. 7 MHz IF-Amplifier with MC1350. UNIT Per transistor section VDS drain-source voltage − 125 V VGS gate-source voltage −±20 V ID drain current (DC) − 18 A. Amplifier 100m - 22 Watt 10 m-5 Watt mrf237 10 m-6Watt 2SC1971 10 m-8 Watt(ms) BFR91 150 Watt BLF177 150 Watt (ms) BLX15 15Watt 2N3632 15Watt SRF1024 25Watt 2SC 1946A 28Watt MS 2SC1946A 2KW (QB 7. UNIT Per transistor section VDS drain-source voltage − 125 V VGS gate-source voltage −±20 V ID drain current (DC) − 18 A. RF transistor Modules BLF278 VHF 300 Watt Genuine Philips/ NXP RF Power FET. 88-108Mhz 250/300W FM Broadcast Linear Amplifier Including BLF278 ELCO/PHILIPS. * 86-110MHz * 48 Volts * BLF278 MOSFET * Input/ Output 50 ohms * Pout 300W with a 2. More than 1000 pieces have been sold since 2003. Find Amplifier Blf278 related suppliers, manufacturers, products and specifications on GlobalSpec - a trusted source of Amplifier Blf278 information. (3) Interface Board - Dual stereo audio input interface. 1 product rating 1 product ratings - 88-108Mhz 250/300W FM Broadcast Linear Amplifier Including BLF278 ELCO/PHILIPS. -Power requirements 19 to 21 ADC 650W out at 48V. BLF278 Mosfet has been discontinued; we have sold all of our inventory. cooling fans amplifiers 2; INSTALLATION REQUIREMENTS. Upload No category; Discrete & Power Devices. The examples presented in Part 2 are single band HF and VHF amplifiers at the 5 W level — a par-ticularly enjoyable and educational class of amplifiers for the experimenter. 140-150MHZ RF POWER AMPLIFIER PALLET-SMA VHF 300WATTS with BLF278 or MRF151G new: 249. Transistor D5014 BLF578XR is operating normally. Search For BLF278 - BLF278 Product Information : BLF278 12. 5 1750) 300 Watt BLF278 35 Watt SD1272 40 Watt MRF 240 45 Watt MRF238 50 Watt BLW-60 5 Watt SD1127 6 Watt 2SC1971 80 Watt (QQE0640) 90 Watt mrf245 150. Discontinued 4. Description. Wideband Scanner Active Antenna. BLF278_2015: VHF push-pull power MOS transistor: Amphenol Corporation: 282135-75: 860 MHz, 21. Matched gate-source voltage (VGS) groups are available on request. ham radio amplifier. BLF278; EPIA-MII; All from the category (24) Computer Monitors. 59 shipping; Only 1 left! 35 Watching. BLF578,112供应商,生产厂家:NXP,参考价格,BLF578,112 Datasheet pdf资料,参数,设计实例,数据表,集成电路BLF578,112的引脚功能和元器件使用说明规格书. This product is designed for FM transmitter builders who don’t want to worry about finding an appropriate heatsink. Được thiết kế cho các máy. Its really an impedance transformer (9:1) to feed a high impedance, end fed (unbalanced) random wire which is likely to be a few hundred ohms, and transform it into something closer to a 50Ω (unbalanced) coaxial input, hence UnUn. 23cm, 13cm, 9cm Very Low Noise Amplifier - G4DDK. 88-108Mhz 250/300W FM Broadcast Linear Amplifier Including BLF278 ELCO/PHILIPS 88-108Mhz 250/300W FM Broadcast Linear Amplifier Including BLF278 ELCO/PHILIPS. in the amplifier. - AUX interface. BLF278 300Watts FM-broadcast (87. Don't hesitate to ask any question. This design is based on our highly successful 300W class BLF278 pallet. Radioaficion. * Low distortion Class B push-pull. VHF push-pull power MOS transistor BLF278 LIMITING VALUES In accordance with the Absolute Maximum System (IEC 60134). -Rated 300W, 50V. Units inside the carrier can be of either orientation and will not affect the functionality of the device. Kami sajikan : boster 600Watt (2x BLF278) ini mungkin sudah tidak asing lagi bagi anda pakar pakar rf dibelantara dunia, tapi kali ini aku mencoba postingin boster 600 watt hanya untuk sekedar melengkapi koleksi skema di blog saya ini. 29 results for vhf linear amplifier Save this search. My antenna is 6el. Yeah, I know it's kinda crazy, but what the heck? Thar will be fed by an IC7000, so I might use his decoder board. Mantech Electronics is an Electronic Component, Test and Measurement, Tool and Power Product Importer, Supplier and Distributor. Posted by. -Excellent for high power amplifiers in the VHF band. 03 by Fritz Dellsperger, [4] : BLF278 data sheet, Philips, October 1996 [5] : Software RFSim99, [6] : Software AppCAD, by Agilent, [7. While searching for 50MHz PA designs with the BLF278 or equivalent (MFR151G, SD2932?) I came across the website from JA1BOP descibing such an amplifier,in Japanese, unfortunatly, and with no schematic diagram. Top Rated Seller. Discontinued 4. About 6% of these are Transistors, 10% are Integrated Circuits, and 0% are Power Supplies. 19 shipping. Product highlight:. Instead of using the Motorola FET I used the Philips Gemini FET BLF278. • Class A • Devices: BLF278 or equivalent • Switching Power Supply Included. View Specs RF Amplifiers - Low Noise Amplifier-- CMD278C4 Supplier: Custom MMIC Description: The CMD278C4 is a broadband MMIC GaN low noise amplifier housed in a leadless 4x4 mm QFN package. BLF278 FM Radio Broadcast Amplifier Pallet VHF push-pull power MOS transistor. BLF278 transistors are discontinued. Yukari Dudullu Mah Necip Fazıl Bulvari Keyap Sitesi D-1 Blok No:44/56 34775 Umraniye Istanbul-TURKEY. 225 GHz, 250 W, 16 dB, 50 V, VDMOS, SOT-262A1. A 300 watt amplifier is possible using a BLF278 transistor, boards have been made available by a company in Greece. Der er komponenter til begge print så du mangler kun en BLF278/MRF151 og en 48v forsyning så er du kørende. BLF278 Mosfet has been discontinued; we have sold all of our inventory. This design is based on our highly successful 300W class BLF278 pallet. 5-108MHz) broadband RF-amplifier ===== Resistors (values are in Ohms, metalfilm or metaloxide, unless otherwise noted) R1 = 47 (SMD chip-resistor or similar) R2 = 47 (SMD chip-resistor or similar) R3 = 3k9 (SMD chip-resistor or similar) R4 = 3k9 (1/2 watts. BLF278 transistors are discontinued. Original: PDF 2011 - MPF102 spice model. OFFERING A VERY linear power amplifier pallet with original NXP BLF578XR - EUR 225,39. com offers 986 blf278 transistor products. Replacement Part. Kami sajikan : boster 600Watt (2x BLF278) ini mungkin sudah tidak asing lagi bagi anda pakar pakar rf dibelantara dunia, tapi kali ini aku mencoba postingin boster 600 watt hanya untuk sekedar melengkapi koleksi skema di blog saya ini. Free shipping. The amplifier is equipped with a heatsink, LPF, directional coupler, shielding and connector input and output section. BLF278 Datasheet, BLF278 PDF, BLF278 Data sheet, BLF278 manual, BLF278 pdf, BLF278, datenblatt, Electronics BLF278, alldatasheet, free, datasheet, Datasheets, data. Linear amp has tringent IMD and harmonic suppression specs. - Amplifier efficiency is function of supply voltage, in order to obtain max efficiency please reduce supply in function of desired output power. Its really an impedance transformer (9:1) to feed a high impedance, end fed (unbalanced) random wire which is likely to be a few hundred ohms, and transform it into something closer to a 50Ω (unbalanced) coaxial input, hence UnUn. Bias disable pads facilitate integration into amplifier systems that employ automatic VSWR protection. Discontinued 4. You can use other transistor as 2SC1971 and get much more output power. UNIT Per transistor section VDS drain-source voltage − 125 V VGS gate-source voltage −±20 V ID drain current (DC) − 18 A. -Rated 300W, 50V. New Old Stock. The mounting flange provides the common source connection for the transistors. Ik heb hier nog te koop zeer mooie goed werkende ameritron als-600 solid state no tune fet amplifier. Mã: FM300BLF Danh mục: Module FM (Nhập khẩu USA) Hàng mới: 100%, Xuất xứ: USA. 1 Piece (Min. 300W60Mhz-120MHZ amplifier. Den har 3 USB udgange og kan levere 3,1 Amp. be 2 12/05/2007 MRF151G Motorola 50 300 16 55 If the amplifier is well balanced, the currents flowing at the junction of both C capacitors are equal in amplitude and in opposite directions. The amplifier is a push-pull design, using a dual-LDMOS device; by nature, this type of amplifier does a good job of suppressing even harmonics, but the odd harmonics are monsters, so be sure to use a good low pass filter. blf278 mosfet transistor electrolytic capacitor non polarized electrolytic capacitor audio npn transistor amplifier circuit npn transistor amplifier circuit. Temperature remains low and can be operated continuously without a. sistor linear amplifier. The whole board is equipped with: SML D5014UK BLF578XR , RF resistors, ATC capacitors, etc. 225 GHz, 250 W, 16 dB, 50 V, VDMOS, SOT-262A1. Unfollow boomer linear amplifier to stop getting updates on your eBay Feed. Power supply 110, 230 Two-Singlephase Version 50-60Hz VAC. See Details. • Class A • Devices: BLF278 or equivalent • Switching Power Supply Included. amplifier transistor 1kw broadband and more blf278 nxp. (4) Connection cables. Our parts original guaranteed new transistors from NXP, Macom, Philips, and ST microelectronic. BLF278 NXP Semiconductors VHF Push/Pull Power MOS Transistor (NOS) APPLICATIONS • Broadcast transmitters in the VHF frequency range. V1 MRF151G 2 M/A-COM Technology Solutions Inc. The examples presented in Part 2 are single band HF and VHF amplifiers at the 5 W level — a par-ticularly enjoyable and educational class of amplifiers for the experimenter. I think that is spot of what can be expected for a BLF278 on 144 Mhz. An example of amplifier oddities. 330w X15 4950 Watts Solar Panels 15=12pallet Mono, Perc, All Black. Pricing and Availability on millions of electronic components from Digi-Key Electronics. Ao comercializar equipamentos dos mais respeitados fabricantes no mercado, o Planeta do Rádio faz com o comprador uma parceria. 5-108MHz) broadband RF-amplifier ===== Resistors (values are in Ohms, metalfilm or metaloxide, unless otherwise noted) R1 = 47 (SMD chip-resistor or similar) R2 = 47 (SMD chip-resistor or similar) R3 = 3k9 (SMD chip-resistor or similar) R4 = 3k9 (1/2 watts. I have built a homebrew 100W PA with Dual VMOS transistor BLF278 (PHILIPS) from radio scrap. - AUX interface. For the combiner I have chosen to use the Wilkinson combiner. 144 ~ 148 MHz linier amplifier (SSB, FM, CW) consist of 5 x MRF247 Power Transistors. (2) Amplifier board - The amplifier circuit includes BLF278 power amplifier circuit, power and SWR measuring circuit, digital temperature detection circuit. Search our large inventory of semiconductors and buy now. sistor linear amplifier. 300W FM Amplifier [ FM300] Designed for FM radio transmitters, this amplifier incorporates microstrip technology and MOSFET transistor to enhance ruggedness and reliability. BLF278_2015: VHF push-pull power MOS transistor: Amphenol Corporation: 282135-75: 860 MHz, 21. 434 MHz GaAs LNA - DJ5QX. Broadband Amplifier with Constant Current Source. 10140 376 78,5576 3 дня. Type: RF Amplifier Customs services and international tracking provided AM-6155 VHF 220 Mhz 222 1. comPSIHTMLBIT3195G. When running near full power the output network caps would literally heat and fall off. sk/d/dulC-pKZ3WPedb. 140-150MHZ RF POWER AMPLIFIER PALLET-SMA VHF 300WATTS with BLF278 or MRF151G new. 300/470= 64% efficiency (bias was set to 0. An example of amplifier oddities. RF MOSFET Transistors RF Transistor datasheet, inventory & pricing. BLF278 300Watts FM-broadcast (87. Just look at this spectrum analyzer display of the unfiltered output on 40 meters:. A GS35 amp fore 144 MHz. Linear amp has tringent IMD and harmonic suppression specs. Don't hesitate to ask any question. Teste do módulo B do transmissor de 500 watts. 59 shipping; Only 1 left! 35 Watching. BGA2850,115 RF Amplifier 6CH MMIC Amp 4. Products & Services See also: Categories | More Info rmation. TPA3116D2 - Amplifier - PDF TLS2505 - IC - PDF B80NF55L-08 - STB80NF55L-08 - PDF T320HVN01. THERMAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN. We have sold our last time buy inventory. BLF278 mosfets transistors NOT INCLUDED. 140-150MHZ RF POWER AMPLIFIER PALLET-SMA VHF 300WATTS with BLF278 or MRF151G new. ham radio amplifier. NXP Semiconductors RF Manual 18th edition. The amplifier is a push-pull design, using a dual-LDMOS device; by nature, this type of amplifier does a good job of suppressing even harmonics, but the odd harmonics are monsters, so be sure to use a good low pass filter. FM Antenna high power low power professional TX FM Receiver 15w 15w 30w RF Transistor Analog TV TX Power Supply 1. Listing #1481921 - Submitted on 03/22/20 by Callsign W1JCW - IP: 148. BLF278 blf 278 mos smd rfチューブ高周波チューブ電力増幅モジュール 144 mhz amplifier rf tube 人気 商品: mrf sd2932 gal20v8 play pro. 3W will still get your RF signal quit far and I advice you to use a good 50 ohm resistor as dummy load. Heatsink that we use in the RFA-30W-PRO is longer than the RFA-30W-B1 (which has been discontinued). sistor linear amplifier. 29 results for vhf linear amplifier Save this search. Find many great new & used options and get the best deals for BLF278 MRF151G VHF POWER MOS transistor FM Radio Broadcast Amplifier Pallet at the best online prices at eBay! Free shipping for many products!. sub-174-235-1. Kemudian menggunakan exiter 7w di-drive ke input menghasilkan power output 300w lebih, namun kondisinya sangat kritis dan akhirnya BLF278 rusak. Discontinued 4. Power transistor cross-reference list for Motorola, Philips and SGS-Thomson components. 1 day ago Find Amplifier Blf278 related suppliers manufacturers products and specifications on GlobalSpec a trusted source of Amplifier Blf278 information. Bias disable pads facilitate integration into amplifier systems that employ automatic VSWR protection. “ The A300-FM designed for FM radio transmitter. Proses tuning menggunakan exiter BW PLL 1W dan menghasilkan power output 100w. Awal November Power Amplifier BLF278 sudah rampung. More than 1000 pieces have been sold since 2003. OFFERING A VERY linear power amplifier pallet with original NXP BLF578XR - EUR 225,39. Le migliori offerte per 1x BLF278 50V 300W Amplifier, Mosfet Verstärker R. TPA3116D2 - Amplifier - PDF TLS2505 - IC - PDF B80NF55L-08 - STB80NF55L-08 - PDF T320HVN01. No longer available for Export. 7 MHz IF-Amplifier with MC1350. References [1] : MHz 250 W Power Amplifier with the BLF548 MOSFET, Philips AN98021, March 1998 [2] : RF Power Device Impedances : Practical Considerations, Motorola AN1526, 1991 [3] : Software Smith V2. BLF278 Philips 50 300 16 55 BLF368 Philips 32 300 13,5 62 MRF141G Motorola 28 300 14 55. China HF/VHF Power Mosfet NXP (BLF278, BLF177, BLF888, BLF574), Find details about China Vhf Power Mosfet, Rf Power Transistor from HF/VHF Power Mosfet NXP (BLF278, BLF177, BLF888, BLF574) - Shenzhen Vole Technology Co. blf278 - Free download as PDF File (. BLF278 Mosfet has been discontinued; we have sold all of our inventory. in the amplifier. RM HLA150 Plus - All Mode 1. 50 Watt V-Fet push pull amp with 2SK82 2SJ28 vers. Scopri le migliori offerte, subito a casa, in tutta sicurezza. 8-30MHz (150W. 8 Amp x 48V = 470W input, output was 300W on the bird. 3-1 / Piece. We have done all of the research and machining for you. 8 VDC, 50 Amp; Manually selectable Input 10/25/50 Watt; Manually selectable RX amplifier gain -20/+6/+15 dB; Analog meter Indicator with RF Power Meter, VSWR meter, and Voltage Input meter. Shipping $7. Awal November Power Amplifier BLF278 sudah rampung. BLF278 Mosfet has been discontinued; we have sold all of our inventory. Le migliori offerte per 1x BLF278 50V 300W Amplifier, Mosfet Verstärker R. HF High-IP3 LNA - UR3IQO. Teste do módulo B do transmissor de 500 watts. This design is based on our highly successful 300W class BLF278 pallet. This is a pallet with RF Power Field Effect Transistor And if you wish I can offer you at extra cost a modify kit for the critical parts as the ATC capacitors,. 9 MHz High-IP3 Quad-JFET Amplifier - PA3AKE. - mount a 10pF (1206 SMD-chip capacitor) between the base and collector of BC547 (this is the ‘switch’ transistor in the loopfilter section). 455 kHz / 10. About 10 years ago a VK ham did a run of boards to take BLF278 device as for a 350-450W 2M amp. 1 product rating 1 product ratings - 88-108Mhz 250/300W FM Broadcast Linear Amplifier Including BLF278 ELCO/PHILIPS. All leads are isolated from the flange. 800 MHz - 900 MHz LNA. Unfollow boomer linear amplifier to stop getting updates on your eBay Feed. I think that is spot of what can be expected for a BLF278 on 144 Mhz. Được thiết kế cho các máy. Conditioner. 2Amp each fet). Pin Symbol Description Simplified outline Graphic symbol; 1 D1 drain1 2 D2 drain2 3 G1 gate1 4 G2 gate2 5 S source Quality. [email protected] It primarily provides the necessary theoretical underpinnings of power amplifiers, such as circuit topologies, operation principles and expected performance. sub-174-235-1. Hãng sản xuất: AEROCOMM The Aerocomm 300W Pallet Amplifier is the simplest amplifier module on the market. 8 Amp x 48V = 470W input, output was 300W on the bird. 23cm, 13cm, 9cm Very Low Noise Amplifier - G4DDK. Den har 3 USB udgange og kan levere 3,1 Amp. MOS transistor. Teste do módulo B do transmissor de 500 watts. Temperature remains low and can be operated continuously without a. Copper plate 150х100х10mm size LDMOS PA. Wideband Scanner Active Antenna. The examples presented in Part 2 are single band HF and VHF amplifiers at the 5 W level — a par-ticularly enjoyable and educational class of amplifiers for the experimenter. 1 result for boomer linear amplifier Save boomer linear amplifier to get e-mail alerts and updates on your eBay Feed. Buy BLF278,112 with extended same day shipping times. sistor linear amplifier. Product highlight:. dei 2sc2879 power transistor The extra large heat sink on the bottom of these amps are known to get hot and damage the transistors. 88-108Mhz 250/300W FM Broadcast Linear Amplifier Including BLF278 ELCO/PHILIPS. The MAAP-011139 is a 4-stage, 4 W power amplifier that operates from 28. The BLF278 is capable of withstanding a load mismatch corresponding to VSWR = 7 : 1 through all phases under the. New Old Stock. V1 MRF151G 2 M/A-COM Technology Solutions Inc. 300/470= 64% efficiency (bias was set to 0. 8 Amp x 48V = 470W input, output was 300W on the bird. 8-30MHz (150W. Better efficiency, more gain and more power than the BLF278 and MRF151M, this is the hottest RF mosfet at the moment! Minimum power output 350W, supply voltage 48-50V 19 other products in the same category:. 300W VHF Broadcast transmitters POWER AMPLIFIER BOARD for Power LDMOS BLF278 | eBay. About 6% of these are Transistors, 10% are Integrated Circuits, and 0% are Power Supplies. Unfollow boomer linear amplifier to stop getting updates on your eBay Feed. boster 600Watt (2x BLF278) BUAT PEMANCAR FM DARI TUNER BLOK Di dalam Tuner blok FM salah satunya terdapat rangkaian osilator, penguat RF dan juga mixer, kita manfaatkan rangkaian osilatornya. The amplifier is a push-pull design, using a dual-LDMOS device; by nature, this type of amplifier does a good job of suppressing even harmonics, but the odd harmonics are monsters, so be sure to use a good low pass filter. A GS35 amp fore 144 MHz. BLF278 Advanced Semiconductor, Inc. BLF278 blf 278 mos smd rfチューブ高周波チューブ電力増幅モジュール 144 mhz amplifier rf tube 人気 商品: mrf sd2932 gal20v8 play pro. Final Transistor C2782, C2694, C1946A, C1972, C2053, C2097, RD70HVF1, BLF278, MRF151. Amplifier 10mWatt - 6Watt (BFR91&BFR96&2SC1971) Garis PCB: 85 x 55 mm (lebar x tinggi), resolusi adalah 600dpi bitmap. Page 28: Amp300 Amplifier Parts List 1N4148 C. Nov 15, 2017 - This is the circuit diagram of 600W MOSFET power amplifier. The circuit will give you more than 600 Watt audio output for speakers with impedance of 4 Ohm. 19 shipping. Copper plate 150х100х10mm size LDMOS PA. Bend Oregon 97702 USA ABSTRACT In this paper we report on the design and evolution of a 500W 27 MHz Class E amplifier. 約 (USD 118) 多筆相似商品. 7 MHz IF-Amplifier with MC1350. BLF278_2015: VHF push-pull power MOS transistor: Amphenol Corporation: 282135-75: 860 MHz, 21. 2m Linear amplifier module. Listing #1481921 - Submitted on 03/22/20 by Callsign W1JCW - IP: 148. Designed for FM radio transmitters, This amplifier incorporates microstrip technology and a pair of 300W BLF278 transistors. I think that is spot of what can be expected for a BLF278 on 144 Mhz. My antenna is 6el. announced the availability and full design support capabilities for two Ka-band power amplifiers from M/A-COM Technology Solutions. sistor linear amplifier. BLF578,112供应商,生产厂家:NXP,参考价格,BLF578,112 Datasheet pdf资料,参数,设计实例,数据表,集成电路BLF578,112的引脚功能和元器件使用说明规格书. Discontinued 4. 88-108Mhz 250/300W FM Broadcast Linear Amplifier Including BLF278 ELCO/PHILIPS. The working amplifier will have the block diagram shown in Figure 1. BLF278 - Free download as PDF File (. The RF PRE-AMP transistor is a low noise UHF transistor (MRF581A) which has to be treated with care to prevent UHF osc. Taking these pads to ground will shut down the amplifier. dei 2sc2879 power transistor The extra large heat sink on the bottom of these amps are known to get hot and damage the transistors. 300W VHF Broadcast transmitters POWER AMPLIFIER BOARD for Power LDMOS BLF278 | eBay. 97; or Best Offer Save boomer linear amplifier to get e-mail alerts and. Ik heb hier nog te koop zeer mooie goed werkende ameritron als-600 solid state no tune fet amplifier. The mounting flange provides the common source connection for the transistors. MRF151G vs BLF278 MRF151G Transistors RF Power Field-Effect Transistor, 2-Element, Very High Frequency Band, Silicon, N-Channel, Metal-oxide Semiconductor FET, CASE 375-04, 4 PIN. shipping: + AU $11. Radioaficion. 5-108MHz) broadband RF-amplifier ===== Resistors (values are in Ohms, metalfilm or metaloxide, unless otherwise noted) R1 = 47 (SMD chip-resistor or similar) R2 = 47 (SMD chip-resistor or similar) R3 = 3k9 (SMD chip-resistor or similar) R4 = 3k9 (1/2 watts. Figures 2-28 through 2-33 provide the parameters of the BLF278 MOSFET for Class B operation with a quiescent drain current of 0. View Specs RF Amplifiers - Low Noise Amplifier-- CMD278C4 Supplier: Custom MMIC Description: The CMD278C4 is a broadband MMIC GaN low noise amplifier housed in a leadless 4x4 mm QFN package. 8 Amp x 48V = 470W input, output was 300W on the bird. The amplifier is a push-pull design, using a dual-LDMOS device; by nature, this type of amplifier does a good job of suppressing even harmonics, but the odd harmonics are monsters, so be sure to use a good low pass filter. This board is for repair Siel (RFB505, RFB1001, RFB1005, RFB1501, RFB2001, EXC501, EXC1001, EXC2001, EXC2005 and others similars models) amplifiers with board burned. : 500w ERP Output Max : 700w ERP RF Input @ drive: 7w Thinking about using a BLF278 by NXP Semiconductors they are about $150. 25 Meter Band Linear Amp Amplifier Amp C MY OTHER HAM PHP 24,522. VHF trin i samlesæt fra VK4DD der medfølger alle komponenter (UNDTAGEN PA TRANS) inkl. View datasheets, stock and pricing, or find other RF MOSFETs. - Amplifier efficiency is function of supply voltage, in order to obtain max efficiency please reduce supply in function of desired output power. Temperature remains low and can be operated continuously without a. Just look at this spectrum analyzer display of the unfiltered output on 40 meters:. BLF278 Philips 50 300 16 55 BLF368 Philips 32 300 13,5 62 MRF141G Motorola 28 300 14 55. MRF151G vs BLF278 MRF151G Transistors RF Power Field-Effect Transistor, 2-Element, Very High Frequency Band, Silicon, N-Channel, Metal-oxide Semiconductor FET, CASE 375-04, 4 PIN. R PJ1000M sono su eBay Confronta prezzi e caratteristiche di prodotti nuovi e usati Molti articoli con consegna gratis!. sk/d/dulC-pKZ3WPedb. A 300 watt amplifier is possible using a BLF278 transistor, boards have been made available by a company in Greece. pdf), Text File (. sin interés. To meet customer's need on drop in replacement due to product discontinuities or cost down solution where the high ruggedness or high stability, or easier broadband matching required, Innogration manage VDMOS as part of our full spectrum RF Power devices. mungkin saja ada rekan-rekan penghobi rf yang membutuhkan. BLF278 Datasheet, BLF278 PDF, BLF278 Data sheet, BLF278 manual, BLF278 pdf, BLF278, datenblatt, Electronics BLF278, alldatasheet, free, datasheet, Datasheets, data. FM Antenna high power low power professional TX FM Receiver 15w 15w 30w RF Transistor Analog TV TX Power Supply 1. Top Rated Seller. This book covers the basic concepts used in the analysis and design of RF power amplifiers. Power requirements 19 to 21 ADC 650W out at 48V. Most parts will do a VSWR of 10:1 or even 7:1. 59 shipping; Only 1 left! 35 Watching. BLF245, VHF-RF POWER MOS TR 88-108 MHZ RADIO AMP, PHILIPS, BLF245. This product is designed for FM transmitter builders who don’t want to worry about finding an appropriate heatsink. Conditioner. 03 by Fritz Dellsperger, [4] : BLF278 data sheet, Philips, October 1996 [5] : Software RFSim99, [6] : Software AppCAD, by Agilent, [7. Nov 15, 2017 - This is the circuit diagram of 600W MOSFET power amplifier. Everyone had a problem including the VK guy. - Signal input level preset potentiometer. -Excellent for high power amplifiers in the VHF band. A GS35 amp fore 144 MHz. Also the BLF 248 has the best efficiency from BLF278,BLF368,MRF141G,MRF151,DU1028UK,DU28200M,SD2932,SR401 in class AB. BLF278 300Watts FM-broadcast (87. The examples presented in Part 2 are single band HF and VHF amplifiers at the 5 W level — a par-ticularly enjoyable and educational class of amplifiers for the experimenter. VHF push-pull power MOS transistor, BLF278 datasheet, BLF278 circuit, BLF278 data sheet : PHILIPS, alldatasheet, datasheet, Datasheet search site for Electronic Components and Semiconductors, integrated circuits, diodes, triacs, and other semiconductors. The amplifier is equipped with a heatsink, LPF, directional coupler, shielding and connector input and output section. 25 Meter Band Linear Amp Amplifier Amp C MY OTHER HAM PHP 24,522. BLF278_2015: VHF push-pull power MOS transistor: Amphenol Corporation: 282135-75: 860 MHz, 21. Den har 3 USB udgange og kan levere 3,1 Amp. Figures 2-34 through 2-39 provide the parameters of the same BLF278 MOSFET for Class AB operation with a quiescent drain current of 0. 97; or Best Offer Save boomer linear amplifier to get e-mail alerts and. Final Transistor C2782, C2694, C1946A, C1972, C2053, C2097, RD70HVF1, BLF278, MRF151. BLF278 FM Radio Broadcast Amplifier Pallet VHF push-pull power MOS transistor. Awal November Power Amplifier BLF278 sudah rampung. Posted by. Designed for FM radio transmitters, this amplifier incorporates microstrip technology and MOSFET transistor to enhance ruggedness and reliability. 5-108MHz) broadband RF-amplifier ===== Resistors (values are in Ohms, metalfilm or metaloxide, unless otherwise noted) R1 = 47 (SMD chip-resistor or similar) R2 = 47 (SMD chip-resistor or similar) R3 = 3k9 (SMD chip-resistor or similar) R4 = 3k9 (1/2 watts R5 = 1k5 (3 watts) R6 = 12 (3 watts) R7 = 12 (3 watts) R8 = 6. Radioaficion. Mantech Electronics is an Electronic Component, Test and Measurement, Tool and Power Product Importer, Supplier and Distributor. sistor linear amplifier. at the junction of the base and 10 ohm resistor kill UHF osc. I thought I would add some input on the infamous 6W 2sc1971 RF Amplifier showing one I made. Conditioner. Pricing and Availability on millions of electronic components from Digi-Key Electronics. I become amplifier that can only work with FM modulation (on description on eBay stay that he work also with CW and SSB). (2) Amplifier board - The amplifier circuit includes BLF278 power amplifier circuit, power and SWR measuring circuit, digital temperature detection circuit. More than 1000 pieces have been sold since 2003. Designed for FM radio transmitters, This amplifier incorporates microstrip technology and a pair of 300W BLF278 transistors. Proses tuning menggunakan exiter BW PLL 1W dan menghasilkan power output 100w. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. 300W VHF Broadcast transmitters POWER AMPLIFIER BOARD for Power LDMOS BLF278 | eBay. Commercial FM 88-108 MHz The PS is 50V at 30 A. 5w 150w 80w Demodulator 500w 7w 600w Projects 350w 3kw 2kw 5kw 10kw FM amplifier 200w 2w 50mw 700w Power Meter PC control. PERLENGKAPAN PEMANCAR FM ( MiCs BroadCast & MR. Power transistor cross-reference list for Motorola, Philips and SGS-Thomson components. styreprint udviklet af OZ2ELA. Generally best compromise between efficiency and harmonic emission, is obtained when the amplifier work at about 2-3 dB of gain compression. We feature daily all Nxp Uhf listings. [email protected] Broadband Amplifier with Constant Current Source. 5 dB gain push-pull amplifier: Molex Electronics Ltd. item 6 BLF278 VHF POWER MOS transistor FM Radio Broadcast Amplifier Pallet 300W 6 - BLF278 VHF POWER MOS transistor FM Radio Broadcast Amplifier Pallet 300W $108. Den har 3 USB udgange og kan levere 3,1 Amp. 23cm, 13cm, 9cm Very Low Noise Amplifier - G4DDK. This amplifier is based on the transistor 2SC1970 and 2N4427. (3) Interface Board - Dual stereo audio input interface. 8 (3 watts) P1 = 2k5, 10 mm DIA. Shipping $7. The working amplifier will have the block diagram shown in Figure 1. 10208 581 91,212 3 дня. RF amplifier with 30W output power requires only 1W input. RF amplifiers are classified A, AB, B or C according to the phase-angle (number of degrees of current flow during each 360-degree RF cycle) over which plate- or collector-current flows. BLF278; EPIA-MII; All from the category (24) Computer Monitors. 73 shipping. BLF278 Datasheet, BLF278 PDF, BLF278 Data sheet, BLF278 manual, BLF278 pdf, BLF278, datenblatt, Electronics BLF278, alldatasheet, free, datasheet, Datasheets, data. Ao comercializar equipamentos dos mais respeitados fabricantes no mercado, o Planeta do Rádio faz com o comprador uma parceria. Designed, manufactured and assembled entirely the UK, the all new GEMINI linear amplifier is a solid state linear amplifier with 300W output available in 6, 4 and 2m versions. Bias current. The examples presented in Part 2 are single band HF and VHF amplifiers at the 5 W level — a par-ticularly enjoyable and educational class of amplifiers for the experimenter. Page 28: Amp300 Amplifier Parts List 1N4148 C. That point is then acting. Kemudian menggunakan exiter 7w di-drive ke input menghasilkan power output 300w lebih, namun kondisinya sangat kritis dan akhirnya BLF278 rusak. Mantech Electronics is an Electronic Component, Test and Measurement, Tool and Power Product Importer, Supplier and Distributor. It primarily provides the necessary theoretical underpinnings of power amplifiers, such as circuit topologies, operation principles and expected performance. 23cm, 13cm, 9cm Very Low Noise Amplifier - G4DDK. 03 by Fritz Dellsperger, [4] : BLF278 data sheet, Philips, October 1996 [5] : Software RFSim99, [6] : Software AppCAD, by Agilent, [7. Designed to be integrated into amplifiers and transmitters for FM broadcasting, this amplifier has less hassle and more efficiency than any other:OPERATING SPECIFICATIONS(Vsupply = +50 VDC , I Dq = 0. More than 1000 pieces have been sold since 2003. Replacement Part. - Signal input level preset potentiometer. Generally best compromise between efficiency and harmonic emission, is obtained when the amplifier work at about 2-3 dB of gain compression. As of December 7th, 2015 "BL RF Power of NXP Semiconductors" will operate as an independent company under the new trade name "Ampleon". BLF278 Datasheet, BLF278 PDF, BLF278 Data sheet, BLF278 manual, BLF278 pdf, BLF278, datenblatt, Electronics BLF278, alldatasheet, free, datasheet, Datasheets, data. BC847S: NPN Multi-chip General Purpose Amplifier. 10208 581 91,212 3 дня. Find Amplifier Blf278 related suppliers, manufacturers, products and specifications on GlobalSpec - a trusted source of Amplifier Blf278 information. 1 day ago Find Amplifier Blf278 related suppliers manufacturers products and specifications on GlobalSpec a trusted source of Amplifier Blf278 information. 800 MHz - 900 MHz LNA. 000 note: prices include antenna. BLF278 FM Radio Broadcast Amplifier Pallet VHF push-pull power MOS transistor. 5 to 3 watt input. blf278 mosfet transistor electrolytic capacitor non polarized electrolytic capacitor audio npn transistor amplifier circuit npn transistor amplifier circuit. 8 (3 watts) P1 = 2k5, 10 mm DIA. dei 2sc2879 power transistor The extra large heat sink on the bottom of these amps are known to get hot and damage the transistors. Transistor Mosfet Blf278 Potencia Transmisor Radio Emisora $ 650. If you are interested in an external amplifier, consider the project for a 250 watt amplifier listed in the 2010 ARRL Handbook, or getting an HF Packer-Amp Deluxe (35W) Kit or a HF Super Packer Pro (100W) kit. Temperature remains low and can be operated continuously without a. Original: PDF 2011 - MPF102 spice model. [email protected] 434 MHz GaAs LNA - DJ5QX. HF High-IP3 LNA - UR3IQO. This study presents results of the research on designing and implementing solid state 144MHz signal amplifier employing MOSFET BLF278 as the active component of the amplifier. 1 day ago Find Amplifier Blf278 related suppliers manufacturers products and specifications on GlobalSpec a trusted source of Amplifier Blf278 information. Taking these pads to ground will shut down the amplifier. 10140 376 78,5576 3 дня. BLF278 300Watts FM-broadcast (87. Freescale MRF1550NT1 MRF1550 M1550 RF/VHF. Como Empezar. Bias disable pads facilitate integration into amplifier systems that employ automatic VSWR protection. Heatsink that we use in the RFA-30W-PRO is longer than the RFA-30W-B1 (which has been discontinued). RF MOSFET Transistors RF Transistor datasheet, inventory & pricing. Teste do módulo B do transmissor de 500 watts. Its really an impedance transformer (9:1) to feed a high impedance, end fed (unbalanced) random wire which is likely to be a few hundred ohms, and transform it into something closer to a 50Ω (unbalanced) coaxial input, hence UnUn. Find many great new & used options and get the best deals for BLF278 MRF151G VHF POWER MOS transistor FM Radio Broadcast Amplifier Pallet at the best online prices at eBay! Free shipping for many products!. dengan harapan semoga bermanfaat. See Nxp Uhf description for details from Ebay. 8dB on 144MHz. Instead of using the Motorola FET I used the Philips Gemini FET BLF278. -Bias disable pads facilitate integration into amplifier systems that employ automatic VSWR protection. [email protected] 102241-4, ampmodu ро. HF High-IP3 LNA - UR3IQO. Better efficiency, more gain and more power than the BLF278 and MRF151M, this is the hottest RF mosfet at the moment! Minimum power output 350W, supply voltage 48-50V 19 other products in the same category:. Mantech Electronics is an Electronic Component, Test and Measurement, Tool and Power Product Importer, Supplier and Distributor. Proses tuning menggunakan exiter BW PLL 1W dan menghasilkan power output 100w. ham radio amplifier. See Details. Kostenlose Lieferung für viele Artikel!. -Excellent for high power amplifiers in the VHF band. RF transistor Modules BLF278 VHF 300 Watt Genuine Philips/ NXP RF Power FET. 23cm, 13cm, 9cm Very Low Noise Amplifier - G4DDK. Bend Oregon 97702 USA ABSTRACT In this paper we report on the design and evolution of a 500W 27 MHz Class E amplifier. 29 results for vhf linear amplifier Save this search. About 10 years ago a VK ham did a run of boards to take BLF278 device as for a 350-450W 2M amp. Final Transistor C2782, C2694, C1946A, C1972, C2053, C2097, RD70HVF1, BLF278, MRF151. at the junction of the base and 10 ohm resistor kill UHF osc. BLF278; EPIA-MII; All from the category (24) Computer Monitors. To meet customer's need on drop in replacement due to product discontinuities or cost down solution where the high ruggedness or high stability, or easier broadband matching required, Innogration manage VDMOS as part of our full spectrum RF Power devices. 59 shipping; Only 1 left! 35 Watching. Page 28: Amp300 Amplifier Parts List 1N4148 C. 3-1 / Piece. Hasta 12x $ 54. [email protected] Yeah, I know it's kinda crazy, but what the heck? Thar will be fed by an IC7000, so I might use his decoder board. More than 1000 pieces have been sold since 2003. THERMAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN. BLF278 MOS transistor Radio frequency MOSFET transistor VHF push-pull power MOS. Conditioner. BLF245, VHF-RF P0WER MOS TR 88-108 MHZ RADIO AMP, PHILIPS, BLF245. Download : VHF push-pull power MOS transistor. I use this with 2 meter and it works better @ 145mhz than on radio fm. 330 Watt maximum output power at 13. As of December 7th, 2015 "BL RF Power of NXP Semiconductors" will operate as an independent company under the new trade name "Ampleon". This study presents results of the research on designing and implementing solid state 144MHz signal amplifier employing MOSFET BLF278 as the active component of the amplifier. 8 Amp x 48V = 470W input, output was 300W on the bird. Project: RF Power Amplfier for 87MHZ - 108MHz FM Output Min. 1 day ago Find Amplifier Blf278 related suppliers manufacturers products and specifications on GlobalSpec a trusted source of Amplifier Blf278 information. GS35 amplifier for 144 MHz 30/10/2009 graat 0. 5-108MHz) broadband RF-amplifier ===== Resistors (values are in Ohms, metalfilm or metaloxide, unless otherwise noted) R1 = 47 (SMD chip-resistor or similar) R2 = 47 (SMD chip-resistor or similar) R3 = 3k9 (SMD chip-resistor or similar) R4 = 3k9 (1/2 watts. While searching for 50MHz PA designs with the BLF278 or equivalent (MFR151G, SD2932?) I came across the website from JA1BOP descibing such an amplifier,in Japanese, unfortunatly, and with no schematic diagram. Btech 2009. BLF278 NXP Semiconductors VHF Push/Pull Power MOS Transistor (NOS) APPLICATIONS • Broadcast transmitters in the VHF frequency range. Discontinued: SD2942 700W FM Pallet is the closest replacement. 140-150MHZ RF POWER AMPLIFIER PALLET-SMA VHF 300WATTS with BLF278 or MRF151G new. References [1] : MHz 250 W Power Amplifier with the BLF548 MOSFET, Philips AN98021, March 1998 [2] : RF Power Device Impedances : Practical Considerations, Motorola AN1526, 1991 [3] : Software Smith V2. 97; or Best Offer Save boomer linear amplifier to get e-mail alerts and. 00 MRF151G - £78 SD2932 - £69 I will turn the power supply right down to test the power amp with the lowest voltage first, I thought by putting. This amplifier is based on the transistor 2SC1970 and 2N4427. I assembled the unit with the intention of making a 2m linear amplifier for ssb. Der er komponenter til begge print så du mangler kun en BLF278/MRF151 og en 48v forsyning så er du kørende. We have sold our last time buy inventory. blf278 - Free download as PDF File (. 13cm linear amplifier. 5 to 3 watt input. Our parts original guaranteed new transistors from NXP, Macom, Philips, and ST microelectronic. References [1] : MHz 250 W Power Amplifier with the BLF548 MOSFET, Philips AN98021, March 1998 [2] : RF Power Device Impedances : Practical Considerations, Motorola AN1526, 1991 [3] : Software Smith V2. (3) Interface Board - Dual stereo audio input interface. Aluminium heatsink mosfets NOT INCLUDED. 23cm, 13cm, 9cm Very Low Noise Amplifier - G4DDK. This product is designed for FM transmitter builders who don’t want to worry about finding an appropriate heatsink. I become amplifier that can only work with FM modulation (on description on eBay stay that he work also with CW and SSB). PERLENGKAPAN PEMANCAR FM ( MiCs BroadCast & MR. Browse in real time our list of Nxp Uhf sales, some restrictions may apply. RF amplifiers are classified A, AB, B or C according to the phase-angle (number of degrees of current flow during each 360-degree RF cycle) over which plate- or collector-current flows. 5 ÷ 32 MHz • 24 / 50 Volts • Input / Output 50 Ohm • Pout : 10 W min • Gain : 22 dB typ. 3-1 / Piece. at the junction of the base and 10 ohm resistor kill UHF osc. This book covers the basic concepts used in the analysis and design of RF power amplifiers. (3) Interface Board - Dual stereo audio input interface. Ups Casero. 25 Meter Band Linear Amp Amplifier Amp C MY OTHER HAM PHP 24,522. More than 1000 pieces have been sold since 2003. 112,06 EUR + 7,00 EUR envío. -Power requirements 19 to 21 ADC 650W out at 48V. Aluminium heatsink mosfets NOT INCLUDED. Short component leads are very important with this amplifier. Der er komponenter til begge print så du mangler kun en BLF278/MRF151 og en 48v forsyning så er du kørende. We have sold our last time buy inventory. BLF278 FM Radio Broadcast Amplifier Pallet VHF push-pull power MOS transistor. 9 MHz High-IP3 Quad-JFET Amplifier - PA3AKE. The examples presented in Part 2 are single band HF and VHF amplifiers at the 5 W level — a par-ticularly enjoyable and educational class of amplifiers for the experimenter. 5 108 MHz Broadcast Stereo FM transmitter 0 500 W out adjustable At MACOM we design manufacture and support a wide variety of. sk/d/dulC-pKZ3WPedb. Broadband Amplifier with Constant Current Source. Visita eBay per trovare una vasta selezione di amplifier pallet. 9704_015 STAMPATO 6 TURNS 17cm 0. R PJ1000M bei eBay. All type numbers in the table below are discontinued. Der er komponenter til begge print så du mangler kun en BLF278/MRF151 og en 48v forsyning så er du kørende. 約 (USD 118) 多筆相似商品. 18: Use SD2942 FM Pallet as replacement. See Nxp Uhf description for details from Ebay. Garantia de Qualidade. * 86-110MHz * 48 Volts * BLF278 MOSFET * Input/ Output 50 ohms * Pout 300W with a 2. TPA3116D2 - Amplifier - PDF TLS2505 - IC - PDF B80NF55L-08 - STB80NF55L-08 - PDF T320HVN01. Den har 3 USB udgange og kan levere 3,1 Amp. BGA2850,115 RF Amplifier 6CH MMIC Amp 4. 5W AP602D with ultra high IP and F=0. Hasta 12x $ 54. BLF278 300Watts FM-broadcast (87. Taking these pads to ground will shut down the amplifier. Search our large inventory of semiconductors and buy now. Find great deals on eBay for vhf linear amplifier and 2 meter amplifier. Listing #1481921 - Submitted on 03/22/20 by Callsign W1JCW - IP: 148. be 2 12/05/2007 MRF151G Motorola 50 300 16 55 If the amplifier is well balanced, the currents flowing at the junction of both C capacitors are equal in amplitude and in opposite directions. 5w 150w 80w Demodulator 500w 7w 600w Projects 350w 3kw 2kw 5kw 10kw FM amplifier 200w 2w 50mw 700w Power Meter PC control. Free shipping. for booster amplifiers we use Mosfet BLF278; small input and output are very large; prices we offer are: Rp. amplifier transistor 1kw broadband and more blf278 nxp. Broadband Amplifier with Constant Current Source. This study presents results of the research on designing and implementing solid state 144MHz signal amplifier employing MOSFET BLF278 as the active component of the amplifier. Search For BLF278 - BLF278 Product Information : BLF278 12. HF High-IP3 LNA - UR3IQO. Everyone had a problem including the VK guy. About 10 years ago a VK ham did a run of boards to take BLF278 device as for a 350-450W 2M amp. or Best Offer. This design is based on our highly successful 300W class BLF278 pallet. ” more details. 99 USD : I have buy 300W 144MHz amplifier modul from Hellenic RF Lab, and at finnish, I have pay big money for nothing. BLF278 BL Transistors from P1dB RF Power Transistor, 0. References [1] : MHz 250 W Power Amplifier with the BLF548 MOSFET, Philips AN98021, March 1998 [2] : RF Power Device Impedances : Practical Considerations, Motorola AN1526, 1991 [3] : Software Smith V2. Finden Sie Top-Angebote für 1x BLF278 50V 300W Amplifier, Mosfet Verstärker R. Coax relays and bias supply was added so all that would be needed is a Low pass filter. BLF278 300Watts FM-broadcast (87. 5-108MHz) broadband RF-amplifier ===== Resistors (values are in Ohms, metalfilm or metaloxide, unless otherwise noted) R1 = 47 (SMD chip-resistor or similar) R2 = 47 (SMD chip-resistor or similar) R3 = 3k9 (SMD chip-resistor or similar) R4 = 3k9 (1/2 watts.