108 items found from eBay international sellers

  • HF/50 MHz power amplifier 300W output 1.8-54 MHz with LPF and protection VRF2933

    300W HF / 50 MHz VRF2933 / SD2933 power amplifier board with LPF and high speed protection triggers without transistors. 300W output power amplifier on 2 x MOSFET transistors (SD2933 or VRF2933);. SWR on LPF input is better than 1.2:1.
    S$ 343.53
    Top-rated seller
    S$ 13.74 shipping
    From Russian Federation
    Only 1 left!
  • SWR PROTECTION UNIT for amplifiers MOSFET, LDMOS

    S$ 13.74
    From Russian Federation
    S$ 6.87 shipping
    Only 1 left!
  • 45W SSB AM Linear Power Amplifier CW FM HAM Radio Transceiver Shortwave DIY Kit

    Common used in SSB, AM linear power amplifier, the CW, FM, power amplifier, and the most basic signal amplification. Output Power: 45W (Max.). 1 SSB Linear Power Amplifier. Output Power: 57W (not with cooling fin).
    S$ 19.58
    Top-rated seller
    Free postage
    From Hong Kong
  • Protection unit for LDMOS MOSFET amplifier (SWR, current, max out power)

    • output power excess protector to disconnect the amplifier if output power is more than preset level. • DC current excess protector to disconnect the amplifier if current consumption is more than preset level.
    S$ 61.83
    Top-rated seller
    S$ 6.87 shipping
    From Russian Federation
    17 watching
  • 2-PORT 500 WATT SPLITTER-COMBINER LDMOS MOSFET amplifier

    Includes both splitter and combiner. 30 dB minimum isolation between combiner input ports. 30 dB minimum isolation between splitter output ports. 2-PORT 500 WATT SPLITTER-COMBINER. 500 Watt SSB power handling capacity.
    S$ 52.22
    From Russian Federation
    S$ 13.74 shipping
    6 watching
  • RA18H1213G RA60H1317M RA60H4047M RA60H1317 Power Amplifier Assembled Board

    RA18H1213G RA60H1317M RA60H4047M RA60H1317. MITSUBISHI & TOSHIBA SAV RF Power Amplifier Assembled Board. ThisRA Amplifier Module Board was designed to work with any type ofMITSUBISHI MOSFET RF POWER Modules inH2 orH2S cases.
    S$ 12.37
    From Ukraine
    S$ 6.87 shipping
    or Best Offer
    42 watching
  • DIY kits 70W SSB linear HF Power Amplifier For YAESU FT-817 KX3 SSB AM CW FM

    Suitable for FT-817 KX3 other small power stations. 1xDIY kits 70W SSB linear HF Power Amplifier For YAESU FT-817 KX3. Maximum output power: 70W. Circuit class AB linear amplifier for SSB AM CW FM power amplifier for low-power radio power connection.
    S$ 24.25
    Top-rated seller
    Free postage
    From Hong Kong
    102 watching
  • 1.2 KW LDMOS power amplifier 1.8-54MHz HF for BLF578

    BLF578, BLF578XR. 1.2 KW LDMOS power amplifier board assembled 1.8 - 54MHz. The board consists of two parts and may accept different types of LDMOS transistors All components are installed except the LDMOS device.
    S$ 178.63
    Top-rated seller
    S$ 13.74 shipping
    From Russian Federation
    Only 1 left!
  • LDMOS BLF188 2-PORT 3000 WATT SPLITTER/COMBINER

    Includes both splitter and combiner with a balanced balance resistor of 30 W 100 Ω. 30 dB minimum isolation between combiner input ports. PC board size: Splitter (55x50 mm) Combiner (120x50 mm). 30 dB minimum isolation between splitter output ports.
    S$ 192.37
    From Russian Federation
    S$ 13.74 shipping
    6 watching
  • HF power amplifier pallet 1200W 1.8-54 MHz LDMOS BLF188XR with copper plate

    The amplifier consists of two boards, input and output with LDMOS BLF188XR. 1.2 KW BLF188XR HF power amplifier 1.8-50MHz SSB CW. Pwr output 1200W. The amplifier is mounted on a copper plate 150x100x10 mm.
    S$ 742.01
    Top-rated seller
    S$ 41.22 shipping
    From Russian Federation
    Only 1 left!
  • HF with 6 m power amplifier 300W MOSFET SD2933

    Amplifier circuit push-pull, class AB. 2 90 x1 4 0x 205. Input Power 20 W. Output power 300 W. Input impedance 50 ohms (unbalanced). Output impedance 50 ohms (unbalanced). Types of radiation SSB, CW, RTTY.
    S$ 865.68
    Top-rated seller
    S$ 137.41 shipping
    From Russian Federation
    18 watching
  • HF power amplifier 1000W MOSFET VRF2933 SD2933 SD2943 1KW without transistors

    Assembled and tested PCB without transistors SD2933/VRF2933 /SD2943. HF power amplifier 1000W for MOSFET transistors SD2933/VRF2933/SD2943 x 4. Output power 1000W. Transistors, Aluminium heatsink and copper spreader plate are not included!
    S$ 185.50
    Top-rated seller
    S$ 13.74 shipping
    From Russian Federation
    Only 1 left!
  • 90W HF Power Amplifier For FT-817 IC-703 SUNSDR2 PRO KX3 QRP Ham Radio

    (This amplifier can be successfully used with other QRP rigs such as the ICOM IC-703(and Elecraft KX3). 1xXF-P100 hf power amplifier. Out power:90W. We are not responsible for any item sent to us that is not our product.).
    S$ 158.96
    Top-rated seller
    Free postage
    From China
    66 watching
  • 300W amp 20W in 1.8-54 MHz SDR Hermes ANAN, FLEX-1500, SunSDR with LPF

    SWR on LPF input is better than 1.2:1. 300W HF / 50 MHz VRF2933 / SD2933 power amplifier board with LPF and high speed protection triggers with SD2933 2 pcs. three level high speed protection : high SWR in antenna feeder, wrong or no LPF selected, output power overshoot and drain current excess.
    S$ 494.68
    From Russian Federation
    S$ 41.22 shipping
  • KIT for protection of HF power amplifier 1200W LDMOS BLF188 VRF2933

    LDMOS and MOSFET amplifier input protection unit. This unit is intended to provide the anti-overshot protection to gates of transistors. Kit to protect power amplifier includes • output power excess protector to disconnect the amplifier if output power is more than preset level.
    S$ 233.60
    Top-rated seller
    S$ 13.74 shipping
    From Russian Federation
    29 watching
  • SINGLE DEVICE 1KW LDMOS-FET LINEAR AMPLIFIER BOARD

    All parts are populated except the LDMOS device that you must provide. The transistors, mosfets, ldmos or RF semiconductors installed in Module Board have NO Warranty. 1 KW LDMOS-FET LINEAR AMPLIFIER BOARD.
    S$ 219.86
    From Israel
    S$ 29.82 shipping
    242 watching
  • KIT for protection power amplifier 2400W LDMOS BLF188XR MOSFET TUBE

    KIT for protection power amplifier 2400W 1.8-54 MHz. TX-RX unit is intended to provide the switching of amplifier between receive and transmit modes. Schottky diode 1N5711. The second tandem match is used as a high SWR detector with incorrect, spontaneous switching, failure of the LPF.
    S$ 316.04
    Top-rated seller
    S$ 13.74 shipping
    From Russian Federation
    Only 1 left!
  • LPF diplexer 1.8 - 30 MHz 1200W 1.2KW SSB CW HF amplifier LDMOS MOSFET RM Italy

    LPF low pass filter diplexer 1000W 1KW SSB CW HF amplifier LDMOS MOSFET RM Italy. Transistor amplifiers are inherently rich in harmonics. This is because of the non-linear junction that all transistors have.
    S$ 357.27
    Top-rated seller
    S$ 41.22 shipping
    From Russian Federation
    Only 1 left!
  • 1.2 KW LDMOS power amplifier 1.8-54MHz HF for BLF188XR

    The board consists of two parts and may accept different types of LDMOS transistors, but optimized for BLF188XR. 1.2 KW LDMOS 1.8 - 54MHz power amplifier board assembled . All components are installed except the LDMOS device.
    S$ 178.63
    Top-rated seller
    S$ 13.74 shipping
    From Russian Federation
    14 watching
  • 2 m 144-148 MHZ 300w linear amp

    A solid state high power VHF linear amplifier built on newly designed circuit board. 300 W 144-148 MHz linear power amplifier. size: 210 x120 x 85 mm and about 2.5 lb. My tests have shown that the circuit is very stable at all power levels.
    S$ 535.90
    From Israel
    S$ 68.29 shipping
    84 watching
  • HF power amplifier SSB CW 1000W MOSFET SD2943 with copper plate

    HF power amplifier 1000W with modern MOSFET transistors SD2943. See youtube video about SD2943 transistors VSWR ruggedness. Assembled and tested PCB with matched set of transistors SD2943 - 1000W out.
    S$ 522.16
    Top-rated seller
    S$ 41.22 shipping
    From Russian Federation
    28 watching
  • Low pass filter LPF 1200W 1.8-54 MHz LDMOS BLF188XR MOSFET power amplifier

    All capacitors are MLCC AVX and Johanson C0G/NPO dielectric. Board size 230 x 130 mm, height 35 mm.
    S$ 302.30
    Top-rated seller
    S$ 41.22 shipping
    From Russian Federation
    Only 1 left!
  • HF power amplifier 300W 1.8-30 MHz with transistors SD2933

    PA10-300W power amplifier 4-6W in, 300W out 1.8-54 MHz. With 4 to 6 W input power from SDR it runs solid 300W to your antenna. FLEX-1500 or QRP HF transceivers. amplifier's output is not filtered by LPF, so do not forget to add it.This.
    S$ 240.47
    Top-rated seller
    S$ 13.74 shipping
    From Russian Federation
    39 watching
  • KIT LPF low pass filter 2.5KW CW SSB (for LDMOS MOSFET amplifier BLF188XR BLF)

    KIT Low pass filter 2500W 1-54 MHz CW, SSB. - Relay TIANBO TRA2 L-12VDC-S-Z 12 pcs. The KIT includes The KIT NOT includes Capasitors ATC 100B KIT DK0009T. You get what you see in the photo. All the information on the link.
    S$ 109.93
    From Russian Federation
    S$ 27.48 shipping
    Only 1 left!
  • Power Amplifier Unit for HF Amateur Transceiver 30-40Watts. Kit for Assembly.

    The irregularity of amplitude - frequency characteristics of Power amplifier - not more than 0,5 dB in the frequency range 1-30 MHz. Universal power amplifier can be used in HF transceivers like in "Druzhba-M", "Desna", "Rosa", "Klopik", "Sloboda" and other designs.
    S$ 74.20
    Top-rated seller
    S$ 5.50 shipping
    From Russian Federation
    37 watching
  • HIGH POWER 1200W LINEAR AMP. 4 X SD2933,VRF2933 BOARD

    THE BOARD WILL TAKE 4 DEVICES ( 4X SD2933, VRF2933 OR WITH LOWER POWER OUTPUT 4X MRF150,BLF177,SD2931 etc.). 4 X SD2933 HIGH POWER HF LINEAR AMPLIFIER BOARD. with 4 sd2933 (not provided)output is about 1KW all across HF and about 80% on 6M.
    S$ 309.17
    From Israel
    S$ 56.06 shipping
    49 watching
  • 2KW + VERY HIGH POWER 2x LDMOS BOARD LINEAR AMPLIFIER

    LDMOS FET high power linear amplifiers. without the active LDMOS devices. "you install your own". The board is supplied ready for your devices to be “dropped in”. The transistors, mosfets, ldmos or RF semiconductors installed in this Module Board areNOT Covered by Warranty.
    S$ 412.23
    From Israel
    S$ 46.44 shipping
    128 watching
  • HF power amplifier 1000W VRF2933 1.8-30 MHz MOSFET copper plate

    HF power amplifier 1000W with modern MOSFET transistors VRF2933. Assembled and tested PCB with 4 matched units of transistors VRF2933 - 1000W out. Output power 1000W. Circuit board is FR4 double layer, 130 x 95 mm, copper thickness 50 um (1.5 oz).
    S$ 522.16
    Top-rated seller
    S$ 41.22 shipping
    From Russian Federation
  • Tandem match TX-RX unit for LDMOS MOSFET tube amplifier 100-2400W

    The second tandem match is used as a high SWR detector with incorrect, spontaneous switching, failure of the LPF. TX-RX unit is intended to provide the switching of amplifier between receive and transmit modes.
    S$ 109.93
    From Russian Federation
    S$ 13.74 shipping
    13 watching
  • FULL KIT HF AMPLIFIER 1200W 1.8-54MHZ LDMOS LPF BLF188XR WITH PROTECTOR

    PA1200W with BLF188XR copper plate. Output power 1200W. Smart High Current DC switch with protector triggers for power amplifiers 1200W max. Input protector unit with ATT 7 dB. The kit includes Wire installation 4 m.
    S$ 1,372.73
    Top-rated seller
    S$ 137.41 shipping
    From Russian Federation
    27 watching
  • dual ldmos blf188 linear amplifier board v2.0

    LINEAR DUAL LDMOS POWER AMPLIFIER. LDMOS FET high power linear amplifiers. without the active LDMOS devices. "you install your own". The board is supplied ready for your devices to be “dropped in”.
    S$ 453.45
    From Israel
    S$ 61.83 shipping
    21 watching
  • PCB for PGA-103+ Ultra Low Noise Figure preamplifier 50 MHZ - 4 GHZ

    Check the schematic for the coil L2. PCB size is 39x39mm. Thickness is 1,6mm. For sale is BARE PCB Only. Gain is greater than 19db. For each 10pcs in one batch ordered you will get one for FREE!
    S$ 6.60
    Top-rated seller
    S$ 3.85 shipping
    From Czech Republic
    or Best Offer
    146 watching
  • 1KW LDMOS-FET LINEAR AMPLIFIER module for BLF188XR

    All parts are populated except the LDMOS device that you must provide. a 100w 10 db pad is also provided on the copper heat spreader to limit the input power andprotect the LDMOS input gates from over drive.
    S$ 508.42
    From Israel
    S$ 89.73 shipping
    10 watching
  • HF power amplifier SSB CW 1000W MOSFET SD2943

    HF power amplifier 1000W with modern MOSFET transistors SD2943. Assembled and tested PCB with 4 matched units of transistors SD2943 - 1000W out. Output power 1000W. Circuit board is FR4 double layer, 130 x 95 mm, copper thickness 50 um (1.5 oz).
    S$ 460.32
    Top-rated seller
    S$ 13.74 shipping
    From Russian Federation
    Only 1 left!
  • HF power amplifier 1000W MOSFET VRF2933 SD2933 1KW CW/SSB without transistors

    HF power amplifier 1000W for MOSFET transistors SD2933/VRF2933 x 4. Output power 1000W. Transistors, Aluminium heatsink and copper spreader plate are not included! Assembled and tested PCB without transistors SD2933/VRF2933.
    S$ 185.50
    From Russian Federation
    S$ 13.74 shipping
    129 watching
  • over legal limit heat sink and copper spreader module

    LINEAR DUAL LDMOS POWER AMPLIFIER ON A COPPER HEAT SPREADER AND EXCELLENT. HEAT SINK. When 2 devices operate at reduced output heat removal is easier and thermal design is far more efficient. This is a populated module but.
    S$ 508.42
    From Israel
    S$ 96.19 shipping
    7 watching
  • HF power amplifier 300W 1.8-30 MHz without transistors SD2933 VRF2933

    This amplifier may be used with variety of transistors: SD2933, VRF2933, SD2943. Use matched pair for best perfomance. PA10-300W power amplifier 10W in, 300W out 1.8-54 MHz without transistors. With 4 to 6 W input power from SDR it runs solid 300W to your antenna.
    S$ 158.02
    Top-rated seller
    S$ 13.74 shipping
    From Russian Federation
    32 watching
  • 50+ Watt SSB linear Power Amplifier for transceiver intercom Radio HF FM CW

    1x Assembled SSB linear Power Amplifier with heatsink. Input Frequency Range: 3M-30Mhz(HF channle). it can be used for all HF Channel. The upgrade board Test Data. input Power Range : 1-5mW( increase Slowly).
    S$ 65.96
    Top-rated seller
    S$ 6.87 shipping
    From Hong Kong
    or Best Offer
    95 watching
  • Tandem match TX-RX unit for LDMOS MOSFET tube amplifier 1200W

    The second tandem match is used as a high SWR detector with incorrect, spontaneous switching, failure of the LPF. TX-RX unit is intended to provide the switching of amplifier between receive and transmit modes.
    S$ 109.93
    Top-rated seller
    S$ 13.74 shipping
    From Russian Federation
  • Protection unit LDMOS MOSFET amplifier 2500W SWR, current, max out power

    Smart High Current DC Switch with protection triggers double BTS660P for 2500W power amplifiers. threshold tuning from 150W up to 2500W with two BTS50085 in parallel. • output power excess protector to disconnect the amplifier if output power is more than preset level.
    S$ 82.45
    Top-rated seller
    S$ 6.87 shipping
    From Russian Federation
    7 watching