Good day Jeff A simple means and cost effective is perhaps look at a standard off the shelf guitar pedal such as the Boss digital delay-could even clock down your 10 Mhz ref for the timing if required.
Just a thought of not reinventing the wheel-most of the good delays use the "MN " delay chip. Something I have thought of in cases where telco microwave links are or a E1/T1 link is to have clock extraction off that link.All of the telco links in my country are clocked off Sat / GPS anyway. Commercial simulcasts are usually routed via microwave or other E1/T1 circuits that one could clock off. Our GSM sites all clock off the incomming E1 link. Just a thought Regards Bradley Glen ZS5WT --- Paul Finch <[EMAIL PROTECTED]> wrote: > FYI, > > Quintron's offsets ran 2 to 6 cycles per transmitter > at the most. 20 cycles > if getting audible. At 2 to 6 cycles the system > sounds pretty good. > > Paul > > > -----Original Message----- > From: Repeater-Builder@yahoogroups.com > [mailto:[EMAIL PROTECTED] Behalf > Of Joe > Sent: Tuesday, June 07, 2005 5:36 AM > To: Repeater-Builder@yahoogroups.com > Subject: RE: [Repeater-Builder] Simulcast: Anyone > done this for ham > repeaters > > > Just keep n mind that you need to have a way to > offset each of the > transmitters 10-20Hz. You do not want them all on > the exact same frequency > on an analog simulcast system. If you do have them > exactly the same > frequency, you will be subject to deep and long > phasing nulls in the mixed > signal areas. This will sound like signal fade. If > you offset the > frequencies slightly, these multiple signals will > "roll" and create a low > frequency beat note. At a 10-20Hz frequency offset, > you will never hear a > 10-20HZ audio tone on a normal transceiver. > > Joe > > ---- Jeff DePolo WN3A <[EMAIL PROTECTED]> wrote: > > I have three repeater transmitters running with > the rubidium/Delta > > combination, but I haven't tackled the audio delay > issue yet. The > > rubidium/Delta marriage and on-air testing has > been more or less just a > > proof-of-concept excercise up to this point. When > I have more time I'll > > get > > back to the project. > > > > --- Jeff > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > [EMAIL PROTECTED] > > > > > > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
