I have used Micro PA-50+ for a couple of years. Chinese amp. Uses RF to detect band and PTT so no QMX connection other than RF. Reliable 50 watt out, but needs SWR less than 2. Price about $180 (at least was before tariffs.?
John?
On Fri, May 2, 2025 at 8:48?AM Bruce K1FFX via <rosen.bruce=
[email protected]> wrote:
The Hardrock-50 plus ATU kits.
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And I re-worked my HR-50 into the HR-50+ 100 watt amplifier.
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Good kits, well-done build instructions, and enjoyable to build (especially if you like winding toroids, which I do).? And first-rate customer support.
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Either the HR-50 or HR-50+ can be driven to full output on a couple of watts of drive.? I built my QMX+ as a 12VDC so as to be able to crank its input voltage way down to manage output power.
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- Bruce K1FFX
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