[Elecraft] AUX_RF vs RX_IN

[Brett Howard]

Essentially I was weighing using the AUX_RF or RX_ANT as a way to get a
no TX path into the SubRX.  However...

I just went and looked at that section again... Those antenna routing
block diagrams I often forget and every time I go look at them again it
always clears up my questions...  

So I guess the question of using RX_ANT or AUX_RF goes away as it
appears that the RX_ANT can not be routed to only the SUB_RX.  And I
don't want to use the ANT2 port with the ICE RF Limiter on it as that
would allow the possibility of transmitting back through the RF limiter.
So it looks like it was smart that I switched over to AUX_RF mode after
FD last year (I'd probably thought this all the way through back them
and I've just since forgotten). :)

Should be interesting...  I think we may actually end up having 4
antennas run into that tent and with the radio in AUX_RF connection mode
you can actually hook 4 antennas into the K3. ;) 

Appreciate that prod to go back and RTFM a little closer Don. 

~Brett (N7MG) 


On Wed, 2010-06-09 at 20:16 -0400, Don Wilhelm wrote:
> Brett,
> 
> I am not certain I followed all your proposed solutions, but consult 
> Figure 4 on page 43 of the K3 manual to see your possibilities.
> The main can use either RX IN or the KAT3 selected antenna.
> The sub can share the antenna with the main, or it can connect either to 
> the AUX RF or to the KAT3 antenna that is NOT selected by the main RX 
> (the latter selection depends on how you have the KRX3 antenna TMP cable 
> plugged).
> 
> 73,
> Don W3FPR
> 
> Brett Howard wrote:
> > I'm mulling something over in my head while writing some micro code on
> > way too little sleep...  Anyway last year at FD I had some issues with
> > my COR in the SubRX activating when we were doing diversity receive.
> > Sometimes it was activating when we transmitted on our antenna and
> > sometimes it was activating when the other station transmitted...  But
> > it only was doing this on the subRX as soon as you got out of
> > Diversity there were no issues.  Not sure why we only were having COR
> > switching issues only on the sub as it seemed to follow the SubRX when
> > the antennas were switched.
> >
> >