Hi Charlie.

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This is a conundrum with the QRP radios. Most tuners need at least 10 watts to reliable get a match. ?I have used the AT200 Pro II and it will not reliably get a match with a 5Watt drive.

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You would have to light up the amp to say 25W or so by controlling the output of the Hermes.? There are no other real good solutions to the problem with the exception of making every band resonant at the desired Frequency on your antenna.

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Ronnie

VE3NLS

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I'm using a Hermes Lite SDR (5W max) which drives an (up to) 150W external amplifier. I use the Hermes alone to tune.
Originally I was looking at the AT100ProII, but see that it is limited to 30W on digital modes. I'd like to have more headroom than that so as not to fry the tuner if the amp exceeds that. I see that the AT200Proii can handle up to 100W digital, so feel that would be sufficient, however it appears to need 5W for tuning.? 5W output from the Hermes is a maximum output, on some bands, it might be slightly lower. Will that not work with the AT200Proii???

I also considered "training" the tuner with a higher powered radio, for the tuner to gain memories on band segments, and then reconnect the QRP radio to trigger a memory tune. Or, does a memory tune also require a minimum of 5W?

Thanks

Charlie KB8CR