res148cue said:
I have programmed both West Orange and Verona in different order and both have tracked fine. I usually program Trunked Systems highest freq. first numerical order with no trouble. Maybe the system itself has to do with it?
No, EDACS is EDACS is EDACS. The control channel references channel numbers (the LCNs), individual radios store the information that Channel #1 = 850.0000 MHz, Channel #2 = 851.0000 MHz, or whatever. Scanners must be programmed with that information for every channel, and if they equate a wrong frequency with a channel number then it will go looking at the wrong spot in the spectrum for the intended transmission and you won't get it. You might get a simultaneous transmission on a different talkgroup or static or cochannel interference, but not the intended transmission. This is why there is no Control Channel Only option for EDACS.
I'm not convinced you were tracking them fine. If you are sure that you were and you are sure that the frequencies were programmed in to wrong LCNs in the scanner, I can only guess that your scanner can make use of the subaudible data on voice channels like the original Pro-92 did for Motorola systems. And if this is the case then I bet a lot of people on that scanner manufacturer's forum and on the EDACS forum would be interested in hearing about it, as I am not aware of a scanner that advertises that ability. It could give scanner users the priority function that actual EDACS users have.
In the meantime, please don't tell people that it does not matter what order the program the channels because for 99.99% of scanners it absolutely does matter. Thanks.
markjrenna: 800Mhz signals are notoriously touchy. My town is on 800 and moving just a few feet within a building can make the difference between crystal-clear transmissions and failed transmissions out. On the scanner side, the coverage map is not always intuitive. There are places in town where reception is borderline, while there are places dozens of miles away where reception is surprisingly good. So you can't really expect signals in different bands to be received with similar quality even if the transmitter locations and powers are the same.
If you haven't already, try an 800MHz antenna. I am quite happy with a small base one I got from
Grove; the downside of it is that it performs abysmally outside of 800 MHz. Radio Shack has or had one designed for portables which did great on 800, very well on UHF, and reasonably well on VHF-high too.
Jim