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  • Manufacturer: Enigma Broadcast

Amateur Radio 2m High Power 300W Amplifier Module Ver.2

£224.99 GBP (excl. VAT)
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In Stock: 3

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Product description


The Enigma Broadcast 2m high power amplifier v2 is perfect for those wishing to increase their presence on the 2m band. With an output of 300-350W with an input drive of only 2W, this compact module has several novel features and excellent specifications. 

This new version has several improvements and extra customer-requested features when compared to the previous version : Improved bias thermal tracking, PTT LED indication plus dual-mode bias disable to save power in linear mode during idle. 

This module is suitable for those wishing to build their own home-brew amplifier but lack the experience or test equipment to build and set up a full kit themselves. 

The amplifier is supplied completely assembled and tested on a heatsink. For a finished product you will need to add a case, a fan of at least 50cfm, 500W/ 48-50V power supply, coaxial relays, coax cable and connectors.  

For those who wish to build this amplifier from scratch, a kit is also available here


-Fully assembled and tested amplifier building-block 

-High quality components used throughout

-Latest high-ruggedness MRFE6VP6300H RF mosfet

-High efficiency design

-Broadband, requires no tuning

-On-board low pass filter. Excellent spectral purity

-On-board directional coupler and precision thermistor for SWR and temperature monitoring

-Bias shutdown for PTT

-Temperature compensated mosfet bias

-Suitable for FM & SSB


-Power Gain:  >22dB @48V/ 50mA bias (2W input required for >300W output)

-Efficiency: Approx. 70% @350W/ 48V (FM mode)

-Harmonic output: <-70dBc, 140-150MHz

-Current draw: Typical 10A at 48V

-Supplied tested and set-up for FM use, SSB will require re-adjustment of bias

-Mismatch ruggedness: >SWR 65:1. Tested into open and short circuit loads at the output without damage.

-Size: 200 (L) x 100 (W) x 75 (H)mm (mounted on Enigma HS200 heatsink).

-Voltage outputs via an edge connector for thermal and SWR monitoring, suitable for connection to a microcontroller

-Bias shutdown for PTT (dual mode, either ground or +5-12V input to disable bias)

-LED indicators for +50V Supply and PTT bias on. 

-Supplied with full instructions & technical support via email. 

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