[Elecraft] K3 Phones / Diversity Question

[Jim Bennett]

Hmmmm…. I'm on the path here. Found that BSET was sitting at Main, so the Sub and Main were sharing an antenna, which they don't do in Diversity. I changed this to Aux, and now I see that the Sub is using Ant 2 and Main is using Ant 1. That was the good news. The bad news is that there are no signals being heard on the Sub, no matter which external antenna is connected to it. The CONFIG setting is Ant = ATU, so it's time to putt the K3 apart and see what is happening. Perhaps the cable from the Kat3 is disconnected. Or worse, maybe that ^&&%$$ little connector broke off the KRX3 board when I plugged in the TMP cable. Will let y'all know what I find.

On   Friday, Aug 3, 2012, at  Friday, 10:59 AM, Jim Bennett wrote:

> Hi Scott, yes - there is a separate antenna. I have an 88 foot long doublet connected to ANT 1 and a ground mounted Hustler 5BTV connected to Ant 2. In CONFIG, I have KRX3 ANT = ATU. So, if I understand correctly, Main uses Ant 1 and Sub uses Ant2. But, I just did an experiment and unhooked Ant 2 while listening to the Sub w/o Diversity turned on. Signals did not drop off. So, it sounds like they are sharing Ant 1. Time to putt off the top cover and see what I've done. Stay tuned…..
> 
> Jim
> 
> On   Friday, Aug 3, 2012, at  Friday, 10:24 AM, Scott Manthe wrote:
> 
>> Do you have a separate receiver antenna connected to the KRX3? If so, is 
>> the KRX3 configured properly to use it?
>> 
>> 73,
>> Scott, N9AA
>> 
>> 
>> On 8/3/12 1:16 PM, Jim Bennett wrote:
>>> Still have issues with this. Here are the settings in Config that I'm assuming are relevant:
>>> 
>>> L-Mix-R = A  b
>>> SPKRS = 1
>>> SPKR + Ph = no
>>> SQ Main = Sub Pot
>>> SQ Sub = Sub Pot
>>> Sub AF = Nor
>>> 
>>> With these Config settings, the K3 works fine with the SubRX turned off; equal Main audio in both headphones. When I turn on the SubRX, it is still OK; I get Main audio in the left ear and Sub audio in the right ear. I know I'm getting the Sub audio in the right ear, as I can turn the sub VFO and hear the frequency change in my right ear. BUT, as soon as I turn on Diversity, I get almost no signal in the right ear. It isn't silent - it's just that the signal that is pounding in on the Main is nearly inaudible on the Sub. If the signal being received on the Main is less than S7, I can't even hear it on the Sub with Diversity turned on. If it is an S9 or greater signal, then I can just barely hear it on the Sub when Diversity is turned on.
>>> 
>>> Very strange. The SubRX works fine until Diversity mode is enabled.
>>> 
>>> Any ideas? Does this need to be escalated to Elecraft Tech Support?
>>> 
>>> 
>>> 
>> 
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