Gareth,

You probably don't have the correct antenna port assigned to the sub receiver.  I'm not in front of my rig, but I believe you need to push and hold A/B (B Set) to get to the sub receiver, at that point be sure the correct antenna port is selected.

Rich - N5ZC

On 5/26/2020 10:05 AM, Gareth M5KVK wrote:
Hi there
I bought a s/h K3S a couple of years ago (SN 10901). It has a KRX3A installed, 
but I’ve never tried to use it until now. When I enabled the sub receiver this 
morning, I found I was getting no signal.

I’ve checked various CONFIG settings and it’s set to use the MAIN ANT and it’s 
AF is independent of the K3S. In an attempt to make progress, I reviewed the 
installation instructions.

Item 4, after enabling TECH MD, is Tap DISP and rotate VFO B to display SYN1 
and SYN2. I do not see these items. Any idea how to debug this?

73

Gareth, M5KVK
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