Duane, If you're still stumped, e-mail me your codeplug. I'll load it into a CDM750 on this end to see if the symptom is in the programming or not.
73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Duane Hall Sent: Tuesday, March 21, 2006 9:09 PM To: [email protected] Subject: Re: [Repeater-Builder] Motorola CDM750 Mobile Tx Hang Time Nothing is connected to the accy jack, other than a momentary switch to connect pins 3 (PTT) and 5 (Gnd) together for testing. The radio is transmitting into a dummy load via a double shielded jumper, and the supply voltage is well regulated. I will read the radio tomorrow and make note of the firmware version. Will also locate a hand mic or make a test plug to key the radio via the mic jack. Thanks for the suggestions. Duane Eric Lemmon wrote: >Duane, > >I have a fleet of CDM750 radios in service, and have never seen this >symptom. I assume that when you say "...RICK out of the picture..." you >mean that you have tried keying the radio into a dummy load with the >RMN4025B hand microphone and on a known-good power supply, with nothing >hooked to the rear accessory connector. If the radio still hangs, then >there is a possibility that a post-PTT signaling mode has been inadvertently >enabled. > >These problems sometimes occur in modular repeaters, if double-shielded >cables are not used, when the signal leakage keeps the repeater keyed. A >poorly-regulated power supply is another suspect. Of course, there may be >something wrong with the radio itself. I checked the SRN library, and found >no mention of either the problem or of a mod. What firmware version is in >the radio? You can see this on the "Radio Information" page only when you >read the radio, not from an archive file. > >73, Eric Lemmon WB6FLY > > >-----Original Message----- >From: [email protected] >[mailto:[EMAIL PROTECTED] On Behalf Of Duane Hall >Sent: Tuesday, March 21, 2006 1:22 PM >To: [email protected] >Subject: [Repeater-Builder] Motorola CDM750 Mobile Tx Hang Time > >I'm working on a CDR500 repeater, setup for unidirectional repeat. I'm >trying to use it in a voted repeater system, but have run into a problem. >The CDM mobile on the transmit side has nearly 1 second of hang time. Even >with the RICK out of the picture, the transmitter is slow to drop. Is there >a parameter in the radio programming that I'm missing? I messed with >debounce and anything else I could find in the software with no luck. Is >this the nature of the beast, or is there a hardware mod I need to do to the >radio? > >Thanks in advance! > > >Duane Hall >AB8QU > > > > > > > > >Yahoo! Groups Links > > > > > > > > > > > > > > >Yahoo! Groups Links > > > > > > > > > > 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/
