Re: AW: [drakelist] R-4C filters

Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist gang -- Another perhaps not so significant problem with a narrower 1st IF filter is the effect it has on the Noise Blanker, if used. Any filter delays signals

Re: AW: [drakelist] R-4C filters

Hello Uli, Perhaps I haven't looked at the schematic in quite a while; I probably assumed that sideband selection came first, which it obviously didn't.   Thanks for setting me straight.   73,   Eric Graf Ulrich Com MD PD ST 2 ULM 1 <[EMAIL PROTECTED]> wrote: Hello Eric,   the filter on the firs

AW: [drakelist] R-4C filters

Title: Nachricht Hello Eric,   the filter on the first if is centered, that means that both sidebands have to pass through. With a bandwidth of 4 kHz only your maximum audio frequency on either sideband is limited to 2 kHz - much too low for acceptable ssb reception. For pleasant ssb a mini