The K3 is a great radio, we all agree, and it is finding lots of
enthusiasts for use on VHF/UHF. But for one very popular use, it is
not able to fulfill is as a satellite radio. For successful use on
the ham sats one needs to have full duplex operation. This usually
is in the form of cross-band duplex (e.g. transmit on 2m and receive on 70cm).
One can set up a dual-receiver K3 to be connected to a 2m transverter
for transmitting and a 70cm converter or transverter for receiving
using the aux antenna and sub-Rx, but the K3 cannot support duplex at
the SDR level of the radio, as I understand it.
Well, I have an idea that might work if one can keep the sub-Rx 1st
IF operational during transmit mode. If one took the first IF of the
sub-Rx to an external SDR for demod it seems duplex operation could
be done. The VFO's would be run un-linked.
This question/suggestion is submitted to Wayne and crew for comment.
73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 50-1.1kW?, 144-1.4kw, 432-100w, 1296-testing*, 3400-?
DUBUS Magazine USA Rep
[hidden email]
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