That would be great, someday, if you have the time to do up an article about making M-PDs into a Repeater. I think that it would be a welcome addition to the Repeater-Builder web page.
I know that the Motorola MX-series handheld radios make great Repeaters - Motorola made several different factory-packaged versions of the MX-Series Repeater. I have a Factory VHF MX 19" Rack-Mount Repeater that was originally in the 160 MHz range that I rebuilt with the low-split MX modules into a 2-Meter Repeater that works very well. I have the factory service manual for it, as well. These low-power MX Repeaters were designed to work at a Solar-powered site, they run on 12VDC and draw very little current. A Repeater using GE M-PDs would be nice, too, since I have plenty of M-PDs and service manuals. Thanks, Larry -----Original Message----- >From: Gary Peterson <[EMAIL PROTECTED]> >Sent: Mar 11, 2006 2:55 PM >To: [EMAIL PROTECTED] >Subject: Re: [GE] M-PA or M-PD finding a COR > >Vincent: > >It must be a trunking front - there is no COR signal on the conventional >MPD. > >It's called the receiver mute line. I have not used MPA's because >MPD's are so cheap and very acceptable for this application. > >Just get a volt meter and check each of the mic pins to ground for a >+5vdc signal only present when the receiver is busy. > >IMPORTANT NOTE: don't program the transmitter radio for a receive on >the repeater input, or it will not transmit at all if you ever duplex >them. If an MPD/MPA receives a signal and then you key the transmitter >20msec. later, it does not transmit in duplex usage. > >In a cross band application that should not be an issue. > >I have three repeaters built from MPD's and they work great and are easy >to service. Just watch for problems with battery packs... all our >failures so far have been due to battery pack problems. We really >should be using battery pack eliminators for a full service repeater. > >Gary >NZ5V > > > >Vincent Caruso wrote: >> Dose anyone know where I can find the COR on an M-PA or M-PD portable? >> I need to make a small cross band repeater and these radios would be >> ideal. the box would be similar to the CHP motor cycle extender. >> >> Thanks >> >> >> [Non-text portions of this message have been removed] >> >> >> >> To Unsubscribe, Click Below: >> mailto:[EMAIL PROTECTED] >> No Subject or Text is required. >> Yahoo! Groups Links >> >> >> >> >> >> >> >> >> > > >To Unsubscribe, Click Below: >mailto:[EMAIL PROTECTED] >No Subject or Text is required. >Yahoo! Groups Links > > > > > > 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/
