EDACS freq re use

[ecommfan]

Listening to a large multisite EDACS system in Vancouver Canada . The largest site is adding 6 new freqs . Two of these are being used by adjoining sites . Wondering what kind of seperation is required ? These 6 freqs are still in test mode . Has anyone seen freqs being re used in such close proximity on an EDACS system ? There also reports of simplex freqs being used in analog with tone protection . These same freqs are part of trunk sites . Wondering how likely this is ? Have not been able to confirm this . Have confirmed simplex use on freqs that are not part of the various trunk sets . Thanks for any help . The freqs are all in the database . The only change is Vancouver lcn 16 its 867.3625 .

[ecommfan]

LCN 15-20 now active with normal use on the Vancouver site

[HarrisRF]

If the transmission doesnt contain HSD and LSD to handshake and to keep the channel up then the transmission will be ignored by the EDACS site. You might get a lot of carrier detect warnings.

[EnidPuceflange]

A lot will depend upon the terrain. In Vancouver, there are a lot of ridges that block RF, with the sites located in the valleys between the ridges. The problems would only occur at the tops of the ridges, and only if both channels were lit simultaneously, and it were a mobile doing the transmitting on the ridge top and a portable a long way from the receiving site on the other system.

Even if they are both control channels, assuming that color coding is turned on both sites will operate just fine, except that ProScan will have a very hard time.....

My guess is that Ecomm is planning to shut down the frequencies on the older site....they are just moving them.