Thanks, Richard There is no ATU, so there is only the one ANT to select. However, I have checked that CONFIG KRX3 has Ant=ATu (even though there is no ATU, only this or BNC are offered as options)
Gareth On 26/05/2020, 16:31, "Richard Thorne" <[email protected]> wrote: 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 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]

