I've been suspecting my filters are drifting too! A friend of mine had his lower SSB filter go intermittent this weekend. I have a few Drake rigs and the audio is not right coming out of a couple of them. I think the crystals in the filters are drifting and producing weird shaped output curves for the filters. Kind of scares me when you consider new filters will cost around $130 each and you need two of them! Lee, w0vt
----- Original Message ----- From: [email protected] To: "drakelist" <[email protected]> Sent: Monday, February 24, 2014 12:35:58 PM Subject: [Drakelist] TR-4C S meter meter zero Help! ----- Original Message ----- With no incoming signals, including crystal calibrator, and with C-130 adjusted for equal sounding "white noise" when switching between Lower" and "Upper" I am unable to zero the S-meter in both sidebands. It will zero with one or the other and then the other is off by 1 to 1 1/2 S units or so. I can adjust C-130 so the S- meter zeros in both sidebands but then the "white noise" has a different sound in each sideband. My other TR-4CW/RIT works as it should in all respects to S-meter zero, C-130 adjustment, and "white noise": sound. I'm starting to think one or both filters may be the root of this evil but do not have a scope t o visually look around. .I'm convinced I'm overlooking something. What might it be? 73 joe k7mks __._,_.___ Reply via web post Reply to sender Reply to group Start a New Topic Messages in this topic (1) Visit Your Group * New Members 6 Yahoo! Groups • Privacy • Unsubscribe • Terms of Use . __,_._,___ _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
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