98 items found from eBay international sellers

  • 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$ 183.59
    From Russian Federation
    S$ 20.40 shipping
    Brand: Unbranded
    46 watching
    Band: HF
  • Tandem Match Coupler using AD8307 PCB for measuring Fwd Rev Voltage VSWR in RF

    The detector employed is 2 numbers of AD8307, for high sensitivity and accuracy. All components arre easily available. We connect digital or Analog readouts, to this Board. The Schematic diagram for this Board can be had from.
    S$ 10.88
    From India
    Free postage
    Brand: Unbranded
    7 watching
    Band: VHF
  • 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$ 6.53
    Top-rated seller
    S$ 3.81 shipping
    From Czech Republic
    or Best Offer
    Brand: Unbranded
    147 watching
    Band: HF
  • 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$ 24.00
    Top-rated seller
    Free postage
    From Hong Kong
    105 watching
    Brand: UnbrandedBand: HF
  • 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$ 176.79
    From Russian Federation
    S$ 20.40 shipping
    Brand: Unbranded
    86 watching
    Band: HF
  • HF Linear Power Amplifier 1.8M-54MHz 30-50W Shortwave for FT817 IC703 Ham

    1.8M-54MHz 30-50W Short Wave Linear Power Amplifier for FT817 IC703 Ham. - 1pc EA50 1.8M-54MHz 30-50W Short Wave Linear Power Amplifier for FT817. - Short wave linear amplifier. - Note: This amplifier without standing wave protection circuit!
    S$ 244.65
    Top-rated seller
    Free postage
    From China
    52 watching
    Brand: UnbrandedBand: HF
  • 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$ 339.98
    Top-rated seller
    S$ 20.40 shipping
    From Russian Federation
    Only 1 left!
    Brand: UnbrandedBand: AM
  • SWR PROTECTION UNIT for amplifiers MOSFET, LDMOS

    S$ 20.40
    From Russian Federation
    S$ 9.52 shipping
    Brand: Unbranded
    51 watching
    Band: HF
  • CONTROLLER for amplifier 300W transistor LDMOS MOSFET

    Then driver output disconnects from PA input and connects to antenna. Max output power level may be set by R22. VSWR threshold is initially set to 2.0:1 and may be varied by R20.
    S$ 54.40
    From Russian Federation
    S$ 9.52 shipping
    Brand: Unbranded
    13 watching
    Band: HF
  • 300W out PA 20W input with LPF 1.8-54 MHz SDR Hermes ANAN, FLEX-1500, SunSDR2

    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$ 489.56
    From Russian Federation
    S$ 40.80 shipping
    Brand: Unbranded
    Only 1 left!
    Band: HF
  • 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$ 108.79
    Top-rated seller
    S$ 20.40 shipping
    From Russian Federation
    17 watching
    Brand: UnbrandedBand: HF
  • 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$ 73.43
    Top-rated seller
    S$ 5.44 shipping
    From Russian Federation
    48 watching
    Brand: UnbrandedBand: HF
  • RA30H4047 RA35H1516M RA80H1415M SAV32 SAV33 Power Amplifier Assembled Board

    RA30H4047 RA35H1516M RA80H1415M SAV32 SAV33. 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$ 12.24
    From Ukraine
    S$ 6.80 shipping
    Brand: Unbranded
    or Best Offer
    Band: UHF
    28 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$ 530.36
    From Israel
    S$ 67.59 shipping
    Brand: Unbranded
    105 watching
    Band: HF
  • HF/6m power amplifier 2400W KIT for LDMOS BLF188XR LPF 1.854 MHz

    KIT for 2400W HF/6m power amplifier includes Protection unit BTS660P 2400W. Low pass filter 1.8-54 MHz 2400W 1 pc. Double tandem match with PTT board (TX-RX unit) 1 pc.
    S$ 1,223.91
    Top-rated seller
    S$ 135.99 shipping
    From Russian Federation
    Only 1 left!
    Brand: UnbrandedBand: VHF
  • 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$ 176.79
    From Russian Federation
    S$ 20.40 shipping
    Brand: Unbranded
    Only 1 left!
    Band: HF
  • 4-PORT 3000 WATT COMBINER LDMOS BLF188 BLF amplifier

    4-PORT 3000 WATT COMBINER. 30 dB minimum isolation between combiner input ports. PC board size: Combiner 120 mm (L) x 120 mm (W) x 30 mm (H). 3000 Watt SSB/CW power handling capacity. VSWR is less than 1.1:1 for 1.8 - 54 MHz.
    S$ 142.79
    Top-rated seller
    S$ 27.20 shipping
    From Russian FederationBrand: UnbrandedBand: HF
  • 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$ 312.78
    Top-rated seller
    S$ 20.40 shipping
    From Russian Federation
    9 watching
    Brand: UnbrandedBand: UHF
  • HF power amplifier 300-400W 1.8-30 MHz with transistors SD2933

    FLEX-1500 or QRP HF transceivers. PA10-300W power amplifier 4-6W in, 300W out 1.8-54 MHz. The amplifier's output is not filtered by LPF, so do not forget to add it. This amplifier may be used with QRP transceivers like FT-817 or IC-703 (with. ).
    S$ 237.98
    From Russian Federation
    S$ 20.40 shipping
    Brand: Unbranded
    Only 1 left!
    Band: HF
  • 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$ 157.31
    Top-rated seller
    Free postage
    From China
    69 watching
    Brand: UnbrandedBand: HF
  • HF and 50MHz power amplifier 1200W SSB/CW LDMOS BLF188XR with Heat pipes cooling

    This amplifier use BLF188XR LDMOS transistors. It is equipped with all protections required for safe operation Protection against exceeding the maximum drain current of the LDMOS transistor. Output power: 1200W SSB / CW.
    S$ 1,876.66
    From Russian Federation
    S$ 135.99 shipping
    Brand: Unbranded
    Only 1 left!
    Band: HF
  • HF power amplifier SSB CW 1000W MOSFET with copper plate

    HF power amplifier 1000W with modern MOSFET transistors. Assembled and tested PCB with matched set of MOSFET transistors - 1000W out. See youtube video about SD2943 transistors VSWR ruggedness. Output power 1000W.
    S$ 516.76
    From Russian Federation
    S$ 40.80 shipping
    Brand: Unbranded
    Only 1 left!
    Band: HF
  • 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. Power output 1200W. The amplifier is mounted on a copper plate 150x100x10 mm.
    S$ 734.35
    From Russian Federation
    S$ 40.80 shipping
    Brand: Unbranded
    Only 1 left!
    Band: HF
  • 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$ 231.18
    From Russian Federation
    S$ 20.40 shipping
    Brand: Unbranded
    48 watching
    Band: HF
  • 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$ 108.79
    Top-rated seller
    S$ 27.20 shipping
    From Russian Federation
    6 watching
    Brand: UnbrandedBand: HF
  • 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$ 455.57
    From Russian Federation
    S$ 20.40 shipping
    Brand: Unbranded
    98 watching
    Band: HF
  • 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$ 305.98
    From Israel
    S$ 55.48 shipping
    Brand: Unbranded
    61 watching
    Band: HF
  • 1KW LDMOS-FET LINEAR AMPLIFIER BOARD

    All parts are populated except the LDMOS device that you must provide. " Little boy -An HF LDMOS amplifier ". The transistors, mosfets, ldmos or RF semiconductors installed in Module Board have NO Warranty.
    S$ 217.58
    From Israel
    S$ 29.51 shipping
    Brand: Unbranded
    46 watching
    Band: HF
  • 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$ 407.97
    From Israel
    S$ 45.96 shipping
    Brand: Unbranded
    7 watching
    Band: HF
  • HF power amplifier 300 - 400W 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. This amplifier may be used with any QRP HF transceivers like FT-817 or IC-703.
    S$ 156.39
    From Russian Federation
    S$ 20.40 shipping
    Brand: Unbranded
    Only 1 left!
    Band: HF
  • 10m 2kw ldmos linear amp board new!

    2KW DUAL LDMOS HIGH POWER LINEAR AMP BOAR. Here is a dual LDMOS FET linear amp board. The transistors, mosfets, ldmos or RF semiconductors installed in this Module Board areNOT Covered by Warranty.
    S$ 333.18
    From Israel
    S$ 67.59 shipping
    Brand: UnbrandedBand: RF
  • 2017 MINIPA 100W SSB linear HF Power Amplifier For YAESU FT-817 KX3 AM CW FM

    1 xAssembled 100W SSB linear HF Power Amplifier For YAESU FT-817 KX3. max output power: 100W(13.8V/80W;16V/100W). max input power:5W. air cooling: forced fan cooling. Notice:it is Assembled. with heastink.
    S$ 87.75
    Top-rated seller
    Was: Previous PriceS$ 92.38
    From China
    S$ 8.00 shipping
    Brand: Unbranded
    or Best Offer
    Band: HF
    41 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$ 1,358.54
    From Russian Federation
    S$ 135.99 shipping
    Brand: Unbranded
    Only 1 left!
    Band: HF
  • LPF low pass filter 300W LDMOS, MOSFET, RM ITALY and tube amplifier 1.8-54 MHz

    All capacitors are MLCC AVX and Johanson C0G/NPO dielectric. Frequency responce samples Board size 157 x 110 mm, height 22 mm. FR4 PCB with copper thickness 50 um. Band plan.
    S$ 183.59
    From Russian Federation
    S$ 20.40 shipping
    Brand: Unbranded
    Only 1 left!
    Band: VHF
  • DIY KIT MINIPA 100W SSB linear HF Power Amplifier For YAESU FT-817 KX3 AM CW FM

    1 x DIY KIT 100W SSB linear HF Power Amplifier For YAESU FT-817 KX3. max output power: 100W(13.8V/80W;16V/100W). max input power:5W. air cooling: forced fan cooling. Notice:it is DIYKIT, without heastink.
    S$ 47.65
    Top-rated seller
    Was: Previous PriceS$ 50.15
    From China
    S$ 13.44 shipping
    Brand: Unbranded
    or Best Offer
    Band: HF
    88 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$ 217.58
    From Israel
    S$ 29.51 shipping
    Brand: Unbranded
    245 watching
    Band: HF
  • Power Amplifier for HF Amateur Transceivers . 30W. Kit for Assembly.

    Output: 30W. Frequency range: 1.8-30 Mhz.
    S$ 48.96
    Top-rated seller
    S$ 5.44 shipping
    From Russian Federation
    28 watching
    Brand: UnbrandedBand: HF
  • 45W MX-P50M HF Power Amplifier for FT-817 ICOM IC-703 Elecraft KX3 QRP Ham Radio

    This amplifier can be successfully used with other QRP rigs such as the ICOM IC-703(and Elecraft KX3). HF power amplifier, for QRP transceiver, Improve signal. - Out power: 45W. Connect acc cable to transceiver PTT-TX and amplifier,ACC green to“GND”,RED TO“TX-PTT”,the radio “TX-PTT”view manual.
    S$ 255.66
    Top-rated seller
    Free postage
    From China
    19 watching
    Brand: UnbrandedBand: HF
  • SSB CW AM HF Power Amplifier for YASEU FT-817 ICOM IC-703 KX3 QRP Ham Radio

    HF Power Amplifier for YASEU FT-817 ICOM IC-703 Elecraft KX3 QRP Ham Radio MINIPA50. This amplifier can be successfully used with other QRP rigs such as the ICOM IC-703(and Elecraft KX3). HF power amplifier, for QRP transceiver, Improve signal.
    S$ 229.10
    Top-rated seller
    S$ 3.52 shipping
    From ChinaBrand: UnbrandedBand: HF
  • DIY kits 10W QRP Radio HF SW CW telegraph Transmitter 5-9MHz HF Power Amplifer

    Two modes: 1, 7.023MHz CW telegraph transmitter, you can fine-tune the frequency. 2, 5-9MHz 10W power amplifier Telegraph transmitter mode: use the 7.023MHz frequency, transmitting power is 10W, @13.8V 1.22A Emission control close control port, the oscillating unit has been working to avoid chirping sound. PA mode: input 1mW, output 10W, 40dB gain Operating frequency range: 4-9MHz Product Features: Operating voltage 12-15VDC Operating Current: 1.22A@13.8V Input Output Impedance: 50 Ohm Size: 50 * 100mm Weight: 51g.
    S$ 22.75
    Top-rated seller
    Free postage
    From Hong Kong
    or Best Offer
    Brand: UnbrandedBand: HF