Darrell is correct. The relay on the K160RX board switches the RX
path either to the main antenna or the external RxAnt jack. it is, of
course, latching. The RxAnt is NOT grounded when it is not selected,
not is the main antenna jack (of course).
Be aware that there is some leak-through that may occur through this
relay. I had four QSOs (one with W5WMU in La.) during the first 15
minutes of the 2004 Phone Sweepstakes before discovering I had RxAnt
turned on! Yeah, the bands did seem dead...
With the Rx path being pretty much the same whether the main antenna
or the RxAnt is selected, you have about the same opportunity for
receiver overload either way. I wouldn't expect this to be a big
problem. As others have mentioned, having a strong signal nearby
while your are trying to receive is a different matter, and calls for
bandpass filters and the like to keep that signal from desensing your
K2.
On Feb 8, 2006, at 4:29 PM, Darrell Bellerive wrote:
On February 8, 2006 04:15 pm, Augie (Gus) Hansen wrote:
The RECEIVE ANTENNA RELAY, K2 on the
K160RX board, disconnects the RX antenna during transmissions.
Gee, I hope not. I thought that the K2 was completely solid state T/R
switching. No clacking relays.
-Jack Brindle, W6FB
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