toggle quoted messageShow quoted text
However, I would like to have an inverted effect as a MW/AM DX listener. To the band-full of Trans-Atlantic signals, e.g. from Arizona! Seriously speaking, schematics of band-pass filters for the AM, FM and the OIRT-FM bands would be welcome.
Gesendet: Donnerstag, 19. März 2020 um 13:16 Uhr
Von: "Clint Chron" <email@example.com>
Betreff: Re: [EladSDR] How do you like your pre-selector? #fdm-duo #pre-selector
This is a test to see if JPG pictures come through in an email on the groups.io site.
Here is a spectrum display of the AM broadcast band at my QTH in Phoenix, AZ.
I get ADC overload on my Duo radio, even though there are no signals that are stronger than -10 dbm.
Here is the same spectrum using an AM band stop band (reject) notch filter:
ADC overload is gone. Using this band stop filter, I can listen to beacon signals in the 200 – 500 Khz band.
If the pictures do not come through, then please send me your email address and I can send them to you.
From: EladSDR@groups.io [mailto:EladSDR@groups.io] On Behalf Of Paul Jones
I have requested a few months ago new filters to also cover the main broadcast bands that swl users can make use of.
Also a dedicated am 520-1800 notch filter