Lost 24 and 32db Preamp after TGXL tune

Sergey KN7K · February 6

I opened ticket today, but wonder if someone else observed it as well.

I usually run 2 slices (for the last few years). Slice 1 - Steppir, Slice 2- Inverted V for 80/160m and sometimes on upper bands with TGXL. No recent changes on my setup.

Usually I have 24db preamp on higher bands. Today I hit Tune on TGXL on 12m Slice 2 and SWR was around 1.2 and right away I lost receive on that band. Further testing shows that my receive is all good up to +16db, and 24 and 32db receive is gone.

Here is a video to demonstrate:

https://drive.google.com/file/d/1Ob3ssOEP-zZofslbQ7qTZsapd_McIOnV/view?usp=sharing

Setup here : 6600-PGXL-TGXL-AG2x8

Any idea what happened? it sounds like something went wrong with Tune process.

Sergey, KN7K

Sergey KN7K · February 25

OK, my radio is shipped to Flex for repair.

Based on Tim input, 2nd slice is always ON, just audio is silenced when FDX is OFF. There is a possibility that 2nd slice overloaded by 1st one.

I live on the small city lot and have 2el Steppir and 80/160 Inverted L that sometimes I use on upper band on the 2nd slice and have 2 instances of JTDX opened. Basically I have 2 slices open: 1st on Steppir, 2nd on Inverted L that I can use on the all bands.

If above model is correct, I need to find a way to disconnect 2nd slice when TX on the 1st and vice versa.

I do not know if adding whole set of Band pass filters will help or just go completely with one antenna connected only and never use a 2nd slice.

My setup 6600-->PGXL-->TGXL-->AG2x8.

I would appreciate some ideas.

Thanks,

Sergey, KN7K

Lost 24 and 32db Preamp after TGXL tune

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