how to add a squelch control?
From: steve##hicomb.hi.com (Steve Byan) Date: 18 Oct 93 17:53:35 GMT Organization: Hitachi Computer I’d like to know if anyone has or knows where I can find a squelch circuit that I can add to my DX-440 so I can use my voice-activated recorder to “sit” on some UTE channels and record only when a real signal is present. Sometime within the past two years, in either the RL QEX or RL QST magazines (I think QEX, but I seem to remember a high-quality photo appearing with the article, which would put it in QST) had an article by Rhodes on communications receiver design, which contained a nice audio-derived squelch. If you’re really interested in building it, email me and I’ll try to find the article. You might also try getting an index from the RL Automated Mail Server, (info##rl.org) to see if they have an online QST or QEX index.
