Hello topbanders
Some weeks ago I asked for help here on the topband-reflector.
My 2-wire-beverages produced ghost-signals on 160m and 80m
every 5 to 10 kc. The reason is a bc-station on 177kc with
a 59+60dB on the FT1000D. My question was : how can i eliminate this?
I have got many recommandations on the reflector or via e-mail.
Many thanks to all om´s gave me an answer.
There were mainly three opinions:
1. my FT1000 is overdrived
2. i have to take larger cores
3. i have to build a filter into the antennawires
I tested all 3 possibilities:
1. I build a highpass-filter which supressed all signals below 1.5 mc
and put it in the receiver-coax. The signal on 177kc was now only s9
but nothing changed.
2. I build new transformers with large cores but no success in
supressing
the ghost-signals
3. I build 2 traps (parallel-resonant-circits) and put them in each wire
very closed to the cores. This gave the success i need!!
Now there is no ghostsignal on the low bands.
When i put a terminationtransformer on the far end of the beverage
i had the same problem again.
I made the same procedure on this end and the low bands are clean too.
I hope you om´s understand what i try to say.
73 Fred
DL7ON
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