At 07:19 PM 6/26/2005, Jeff DePolo WN3A wrote: >What kind of repeater and ID'er are you using? And where in the transmitter >audio circuitry is the ID audio being injected? > >I've dealt with several problems, mostly with commercial-band repeaters, >where a cheap CW ID'er was hooked up to a run-of-the-mill repeater (Micor, >Mastr II, MSR2000, etc.), and rather than coming up with a clean way of >mixing the CW ID audio with the transmit audio, someone injected the ID into >the tx audio stages after the limiter/LPF.
Arcom 210 controller, into a maggiore transmitter, mixed in with the same audio stream as everything else. I set the ID level (voice) for 3kHz deviation on a service monitor, and the same for repeated audio, IOW 3kHz into the receiver gets you 3kHz out of the transmitter. > The IDer's produced something >resembling distorted square waves. Even though the deviation may be tame, >the high-frequency components pushed the modulation sidebands out far enough >to cause adjacent-channel splatter. Remember, the bandwidth you occupy is a >function of both deviation and maximum modulating frequency. Something as >un-clean as a square wave tone (rich in odd-order harmonics), or an >unfiltered synthesized speech generator, will cause you to spill over onto >adjacent channels even if the peak deviation is under 5 kHz. The audio is clean, and shows no sign of distortion. 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/