Batboard

Does anyone know what the max # of scan channels is for the XTL 2500 (M5 control head)?

Conventional: 16
Trunking: 10

I don't think this has changed from the "motorola standard" of scanable channels.

The theory (I'd think) behind these limits are that if you have 100 scannable channels, there's no way that you will have a chance to reliably catch every bit of chatter on each channel in a manner which would be useful to the average radio user.

-Alex

This is actually an APCO 16 requirement that wasn't
changed when APCO 25 came around. It's not a Motorola
standard, they just complied with it.

The 15+1 for conventional and 10+1 for trunked radios standard long antedates APCO 16.

Of course, they could have had the RSS pop up a window saying "scanning so many channels isn't a good idea!" then let you do it anyway.

<grumble />

I think it has to do with memory partitioning, though doubtless way back when someone concluded that, for the intended public safety use, scanning more than this number of channels would not be in demand.

RKG wrote:I think it has to do with memory partitioning, though doubtless way back when someone concluded that, for the intended public safety use, scanning more than this number of channels would not be in demand.

Not in the analog Spectra, anyway. I've got a UHF Spectra that slipped a bit (I have no clue how), but one day I read the codeplug the and scan list indicated 17 of 16 maximum. I can add as many channels as I want, and the radio will take it and scan them properly (does 40 quite nicely, with good response time.) It's only in the first zone, and I've never been able to reproduce the "failure", but it proves that there is no hardware limitation...

tvsjr wrote:and I've never been able to reproduce the "failure"...

Does that include labbing the codeplug into a "good" radio?