50 Watt HF/6m Power Amplifier for Yaesu FT-817, Icom IC-703/705, Elecraft KX3, automatic band switching

(1 customer review)

$285.00

50W HF/6M Power Amplifier with automatic band switching

SKU: 50W HF + 50MHz PA-1 - auto Categories: ,

Description

This is custom designed HF/6M solid state ham radio amplifier with automatically switched LPF onboard, 4 x RD16HHF1 based, intended for field or mobile operations or as driver for LDMOS amplifier. This amplifier produced from high quality ORIGINAL parts, such as Mitsubishi transistors and AMIDON cores. PA PCB mounted on metal heatsink for good heat dissipation.  PA has 3 dB flatness of frequency response and PA can operate 24x7x365 in any digital modes without extra cooling.

Specifications

  • Nominal power supply – 13.5v
  • Maximum current is – 12A
  • Idle current is – 0.8A (in TX mode without RF)
  • Input frequency – 1.8, 3.5, 7, 10, 14, 18, 24, 28, 50 MHz
  • Input and output impedance – 50 Ohm
  • Input SWR – <1.5 for all bands
  • Nominal input power – 1.5-3W (31.7-34.7dBm), depends on band
  • Maximum input power – 5W (37dBm)
  • Nominal output power – 50W (47dBm)
  • Maximum output power – 65W (48.5dBm)
  • Measured IMD3 performance is -32dB for nominal power
  • External PTT signal – GND active,  RCA female connector, <1 mA sink current, no relay required
  • Band switching – automatic, RF sense
  • Case size – 187x120x80 mm
  • Weight – 1.2 kg

eHam reviews see HERE

Also please take a look to my 100W cased amplifier

Cable connection kits for Hermes Lite2, Yaesu FT-817, Icom-705, Elecraft Kx3

-55 dB RF sampler for pure signal

Additional information

Weight 1.5 kg
Brand

60dbm.com

1 review for 50 Watt HF/6m Power Amplifier for Yaesu FT-817, Icom IC-703/705, Elecraft KX3, automatic band switching

  1. Frank Triche (verified owner) –

    I got my 50 Watt auto band switching amp back in April… It is a super amp… My usage is using the DBM 50watt Neptune as a go between amp for the my Hermes Lite 2 +, Has been working like a charm to power my Acom 2000A amp , I usually run between 1KW and 1200 Watts with the little Hermes.. the 50 Watt amp gets me that with 30 Watts so it is basically just loafing along… I am amazed I don’t see more reviews on this amp… it is well made and works great, autoband changing had a small problem when these came out but mine is fine and all the amps being shipped now are fine.. Changes bands as I go

    73’s Frank Triche
    N5WJ
    Contact me if you want more info… on the Hermes Lite and the Neptune DBM 60 amp

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50W HF/6M automatic amplifier

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schematic diagram

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