Login: GUEST @ JH4XSY.14.JNET1.JPN.AS [Tsuchiura]
home | newest check | boards | help index | log | ps | userlogin | send sysop | slog | status forward | bcm news | users | version | remove cookieUT1HZM > ALL 04.05.25 23:35l 23 Lines 735 Bytes #2 (0) @ WW BID : 34053_UT1HZM Subj: Re: Interface TNC & Soundmodem Path: JH4XSY<N3HYM<IW2OHX<UT1HZM Sent: 250504/1416Z 34053@UT1HZM.KREM.POL.UKR.EU BPQ6.0.24 >R:250503/1322Z 39253@N9SEO.#NAR.AR.USA.NOAM LinBPQ6.0.24 >Interesting, I was (probably) overthinking it? Kayne, I'm was same, even was going to design some splitter/buffer on OP-amps but not complete it. Interest and time forced me to try just parallel connection and it showed no problems and works well for some years already. TNC and soundcard audio lines seems to be quite high impedance, so its not overload ACC out. And vice-versa on rig's ACC input, its enough to set drive level with soundcards s/w mixer and with TNC out level adjust too. Decoupling dc caps are already exist in rig and soundcard/tnc. At least known to me few European HF multi-mode node/bbs stations thats too use same way no problem. 73, Sergej.
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