I have QMX 60-15 running at 11.5-12.3V. At 12.0V I get from 5.2W to 4.7W with lower the frequency higher the power.
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I run it stand alone and sometimes with MX-P50M (45W PA), mostly chasing SOTA? & POTA activations as well doing odd POTA on FT8 myself.
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This is a great rig as all other rigs Hans has produced. My only gripe with QMX is, that it is a very fragile electrically. I burn twice mine already. First time I pulled power cable while TRX was still on. Second time I connected PA when it was already on and QMX was off. In both cases power supplies had to be mended.
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I would say this is the only weak spot I am aware off. It supposed to be portable rig but requires treatment like fragile lab gear.
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73 de Marek SP9TKW
Marek SP9TKW