AT Command to Set Active Cell Tower

MattFS218 · EVDO Newbie Joined: 19 Nov 2007 Posts: 7

I'm wondering if there is an AT Command that will set the Active Cell Tower. At my current location I receive 2 relatively equal PN signals, and my internet connection disconnects each time my EVDO modem switches between the two cell towers. A friend mentioned that there might be an AT command I can give my CDU-680 device that would force it to use a certain Cell Tower. Does anyone know what this command is?

itb44 · EVDO User Joined: 31 Jan 2008 Posts: 50

I have a very similar problem, but a different device. I don't know about AT commands, but it should be possible to do this by editing the PRL. Unfortunately, unlike the basic CDMA entries in my PRL, the EVDO/HDR entries are quite cryptic. I'm still trying to figure out how the HDR Channel and HDR PN Offset are defined by the PRL. Thanks to the help of others in this forum, I think that the combination of those two parameters can be used to distinguish between the individual transceivers.
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AC595, WRT54G3G

kocoman · EVDO User Joined: 07 Jun 2007 Posts: 56

Its either a firmware edit..(the PN selection is automatic in firmware) [maybe someday-put a blacklist/reject to a specific tower?] or you have to buy a directional antenna or use tin can or aluminum foil to direct your signal to the tower you want.

itb44 · EVDO User Joined: 31 Jan 2008 Posts: 50