CDM1250 & The Ham Band

[WatnNY]

I apologize if this question has already been answered. I did search but didn't see anything.

Will a CDM1250 450-512 split radio go down into the ham bands without doing anything major to the radio? Just through the software programming?

Thanks.

Mike

 

[cabletech]

No, you need to due some mod's in the transmit section of the radio and then you need to 'finanse' the software to get that low.

 

[W2NJS]

Go to Batboard • Index page and do a search under HT1250. You may find information there about hex editing the radio's firmware so that the lower limit is, say, 440 instead of 450 as it is now. The newer radios are pretty hard coded for frequency limits, and where on older programmed radios you might be able to slip down to 448/449 the newer radios don't allow this.

 

[Skypilot007]

It can be done but its quite difficult. It's pretty much the same procedure you follow to get a 220MHz radio onto the Ham portion of that band. It's not a simple hex edit of CPS like others, the CDM is a completely different animal. See this thread over on P25.ca.

https://www.p25.ca/threads/316-CDM1550LS-Plus-200MHz-To-220-Ham-Band-Change

 

[MTS2000des]

Ugh what a PITA..easier just to swap it for the proper "R" split 403-470. the Pro series aren't out of band friendly like other product lines.

 

[WatnNY]

I guess I will pass up the great deal then! Thanks for all the info guys!

Mike

 

[SCPD]

Swap

Ugh what a PITA..easier just to swap it for the proper "R" split 403-470. the Pro series aren't out of band friendly like other product lines.

That's what I do.
If you find someone to swap with, offer to pay shipping both directions.
Or just sell it, then buy the proper bandsplit for the same price.

 

[mmckenna]

I've been picking up a lot of CDM radios on E-bay in good condition and for a good price. Latest was VHF CDM-750 for $100, and a second one for $135. I don't have a need for UHF, but I've seen a few on there that look to be in good shape. The parts are pretty easy to get, so even if you do get a scratched up one, or one that's missing a bracket, etc. it's easy to get replacements.