Batboard

Can I get this XTL5k to go down into the ham band? If so how far could I get?

M20SSS9PW1AN

Just curious how much below 450 I could get the radio.

440 for RX no problem

What about TX?

Transmit in the 440s? Will CPS allow this modification or does this require a codeplug hack?

You will need to hex edit the CPS to allow you to program the radio that far down. Not sure if it will TX or not, you will just need to try it. I know with the UHF R1 XTL's will program to 478 instead of the 470. SOme radio's will TX and others will not, they just come up with a fail message. I wish I knew why this was but i'm not too sure.

It depends on the VCO tolerance in the radio. Some end up being able to lock in a wide margin, some just within the published spec. This has been true for most of the Motorola radios (typically they will work much wider and lock, but not the rule). The GE/MA-COM/Harris radios tend to unlock a 1mhz or so outside of their rated splits.

I had an ASTRO Saber way back in the day that would work 403-520 on TX/RX. I never put it on a monitor to see what I was actually getting for power out etc, but it never when into fail001.

So in short, its the luck of the draw.

This is something I would like to know how to stop the xtl from fail 001, Is it the FGU hardware mod that needs to be adjusted?
Because no mod to CPS will fix this problem, maybe someone out there can shine some light on this problem.

Q split TX UHF CB ..... or maybe a Mod to TUNE or TuneA

I did this mod to my XTL2500 S split and it works fine. P25 tx down to 440 no issues.