Skip, Interesting you bring up that idea.....
I've had success with an initial CTCSS induced audio delay, ramped back to zero, using the PT2399 controlled by a DS1803. I use it in the MP100 controllers on a multi hop link system. Talking from one end of the system to the other result is no lost first syllable and, after a few seconds of uninterrupted audio, no audio delay. The data sheets are here: http://www.princeton.com.tw/webSite/temp/products.asp?product_level2_id=25 http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2779 -Steve ----- Original Message ----- From: skipp025 To: [email protected] Sent: Friday, February 02, 2007 8:33 PM Subject: [Repeater-Builder] Re: Commercial Trunking repeater Hi Bob, The sad part is that no current low cost digital delay will easily ramp back to zero time delay while in operation. An analog delay could be ramped back to zero in operation to reduce the delay after each new tx. But alas no repeater mfgr is making cheap analog delays anymore... or for the most part even expensive analog delays. I've asked a few of them... cheers, skipp > [EMAIL PROTECTED] wrote: > One could take care of that with a 1 second ADM on the user > radio's mic audio. I've also found that ADMs solve the "missing > 1st syllable" problem on CTCSS-access repeaters, and allow for > setting the DTMF mute delay to near 0 to solve DTMF falsing > problems. > > I used to hate ADMs, but they do have lots of little advantages > & will probably add one to my own repeater system soon. > > Bob NO6B > Yahoo! Groups Links
