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In the Forum: Off Air Audio
In the Thread: Sansui TU-X1 Broadcast monitor.
Post Subject: More on X1Posted by N-set on: 12/18/2019
Hi guys,
Thank you for the comments. I'm a complete newbie to RF, long learning curve ahead.
1) Antenna - My guiding was Romy's finding (backed by Dima) that this tuner is easily overdriven with too strong an antenna signal. So I though that since I'm only 3km straight line to the emitter without any serious obstacles in between, the receiving strength of a 167cm straight antenna is enough. Indeed, I ended up using 20db attenuator to get of a distortion in a stereo mode. this seems to be in line with Romy's findings that this baby wants a weak RF signal or?
I thought it makes no sense to install a more elaborate and powerful antenna just to later add even more attenuation? Or am I missing something?
I could install for example a directional antenna like this:
https://www.dipol.com.pl/antena_radiowa_dipol_3-rz_b_A0312.htm
But it has +5dB energy gain compared to the straight one. So if the straight one needs 20dB, the directional would need even more at 25dB. What is the sense here.
2) Attenuators: I have a fixed 20dB one:
https://www.dipol.com.pl/tlumik_staly_20db_dse_ta01-20_5-1000_mhz_R50163.htm
but I can get a adjustable 4-20dB:
https://www.dipol.com.pl/tlumik_antenowy_tv_regulowany_tra-03_R50150.htm
What I however wanted to try is more than 20dB but hard to find anything (thanks doug for the info, but I'd prefer to find sth simpler like on the links above).
3) More mods - point taken Romy, I just don't touch it.
4) We have a very good classical radio here - Polish Radio 2, they have quite a lot of life broadcasts both from Poland (where they do their own transmission) and abroad (live retransmissions, e.g. BBC proms).
Cheers,
Jarek
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