I think it's just a matter of being cautious.
I use an Elecraft T1 to tune but use a tuning indicator (TI) that
ensures no more that 2:1 swr is presented to the rig. I have forgotten
to put the TI in tune mode more than once. All it takes is 1 bad
mismatch and maybe I kiss my finals goodbye. I'd rather not replace
them if I can avoid it. Since Hans puts it in big bold red letters to
not go over 12.0v I'm gonna listen... maybe necessary, maybe not...
Until I'm fully comfortable that these rigs are indeed robust, I'm
erring on the side of caution.
-mike/w1mt
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On Fri, Aug 25, 2023 at 2:52?PM Rick NF6G <rdante@...> wrote:
Why would 5W at exactly 9V, for the 9V version be ok, but 5W at exactly 13V, for the 12V version, be dangerous? FWIW, I’ve ran my QMX off a LiFePO4, transmitting with as high as 13.8V, but mostly in the 13.2-13.3V range, with no problems. But to be fair, I’m using a manual tuner. But again, it borderline feels like what I’m reading, on a near daily basis, is running more than 4W at 12V is a sin.
