Dan:
I've used the HTX-100 in the past on 50/222/432, with a mod to get low power
out. It works, but does have its limitations as Zack says. Mine is also a bit
sensitive to low battery voltage (resulting in chirp and FMing on SSB). And it
tends to need to have the microprocessor rebooted after it has been unpowered
for a while (instructions are in the manual).
I much prefer the K2 I have used recently on 50, 222, 432 and 903 MHz in the
rover and on 2m in my CQ WW VHF FN05 operations. It works fine down to 9V or
so. It can be set to read out the VHF/UHF frequency directly, including
compensating for up to a few kHz of LO offset. The drawbacks are that it costs
at least 5 times as much as an HTX-100 on the used market, and you will be very
unlikely to find a used one with the transverter interface board installed if
you use a 1 mW TX level (and may have to look around a bit to find one with the
SSB transmit board). And it is a bit bigger than the HTX-100.
73,
Steve VE3SMA
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