Just to be clear the "drop" is planned, it is designed so that when multiple cars are on the same scene only one of them has a PAC-RT in operation, otherwise it would be a zoo-so the drop is really the synchronization of multiple PAC-RTs, the first system I was involved in was in the mid-1970's and was the state of Ohio, then on to California and the CHP, and Nevada used to use PAC-Rts. Also, today you can find a lot of the mobile repeaters around-and they make good portable repeaters-HOWEVER, most of them, at least the GE ones, made sure that the receiver sensitivity was very poor so that it only picked up local HT traffic. If you have one you will find that in the first receiver stage-the ICOM and associated components, there are a number of caps which have been left out in order to keep the receiver deaf.
Andy W6AMS From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Chris Robinson Sent: Friday, October 23, 2009 10:11 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] what pac-rt means I always found their selection of radios to be a bit odd until about 10 years ago. For a while they would use the GE system in the car and a motorola for other systems, but the two would never really synch properly and there was always the drop out every few seconds that was only about a half second long but none the less annoying! i think they have changed systems now and odnt have this issue anymore. Oh how I use to miss the days of California, now you couldnt pay me enough to move back! On Fri, Oct 23, 2009 at 12:05 PM, Andrew Seybold <aseyb...@andrewseybold.com> wrote: Pac-rt or Pack Rats are they are called, is a low-powered repeater which is tied to the main mobile radio in a police or fire vehicle, when the officier leaves the vehicle he normally takes the HT, and the HT then talks through the PAC-RT back to the base station. This was first done where the mobile units were low band (30-50 MHz) and there were no good HTs available, CHP uses them on 154.905 for their 42 MHz dispatch system Andy From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of George Sent: Friday, October 23, 2009 9:57 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] what pac-rt means i have MTVA converta-com 800mhz with the mts2000 inside the cradle and the control unit NTN1325B has amplifier in it and switching RF TX-RX relay. i hear it clicking between PTT. now the cradle has a switch that says PAC-RT on and off. what does this do? (no manual)
