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Win10 CDM/HT Out of Band and Region Code Mods

 

Has anyone figured out how to do the out-of-band hex edit and the region code edit for the CDM/HT CPS running on Windows 10? If not, I have, and I've only tested it with my HT-1250 lowband that I've got on 6m.
?
The hex edit addresses for out-of-band programming in Windows 10 are different than the article on Repeater Builder, but the values you change are the same. I've made notes on what the addresses are.
?
I've also got notes on where to find the serialized string for the region code mod. I changed it to the value in the Repeater Builder article. I don't have a radio handy to test this on, but I don't see why it wouldn't work.
?
I don't know if anyone had shared this info in the group or not. If not, I would be more than happy to share my notes if anyone would like to do some further testing and possibly add to the website if all is good.
?
Again, I've only tested this with my lowband HT-1250 on 6m, and everything worked fine; however, this would be at your own risk.
?
73,
Terry KM5UQ
 

i would be interested i have a few cdm's to put on 6 meters...thank you?
for any info.....Dewey? ?W0DRJ

On Sat, Mar 8, 2025 at 4:19?PM terry dalpoas via <km5uq=[email protected]> wrote:
Has anyone figured out how to do the out-of-band hex edit and the region code edit for the CDM/HT CPS running on Windows 10? If not, I have, and I've only tested it with my HT-1250 lowband that I've got on 6m.
?
The hex edit addresses for out-of-band programming in Windows 10 are different than the article on Repeater Builder, but the values you change are the same. I've made notes on what the addresses are.
?
I've also got notes on where to find the serialized string for the region code mod. I changed it to the value in the Repeater Builder article. I don't have a radio handy to test this on, but I don't see why it wouldn't work.
?
I don't know if anyone had shared this info in the group or not. If not, I would be more than happy to share my notes if anyone would like to do some further testing and possibly add to the website if all is good.
?
Again, I've only tested this with my lowband HT-1250 on 6m, and everything worked fine; however, this would be at your own risk.
?
73,
Terry KM5UQ
 

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Randoloh Koehler
KI4EZU VE
ki4ezu@...?
360-633-0708
I have used Waris.py with chirp.to program the cmd/ht's out of band

-------- Original message --------
From: "terry dalpoas via groups.io" <km5uq@...>
Date: 3/8/25 2:19 PM (GMT-08:00)
Subject: [repeater-builder] Win10 CDM/HT Out of Band and Region Code Mods

Has anyone figured out how to do the out-of-band hex edit and the region code edit for the CDM/HT CPS running on Windows 10? If not, I have, and I've only tested it with my HT-1250 lowband that I've got on 6m.
?
The hex edit addresses for out-of-band programming in Windows 10 are different than the article on Repeater Builder, but the values you change are the same. I've made notes on what the addresses are.
?
I've also got notes on where to find the serialized string for the region code mod. I changed it to the value in the Repeater Builder article. I don't have a radio handy to test this on, but I don't see why it wouldn't work.
?
I don't know if anyone had shared this info in the group or not. If not, I would be more than happy to share my notes if anyone would like to do some further testing and possibly add to the website if all is good.
?
Again, I've only tested this with my lowband HT-1250 on 6m, and everything worked fine; however, this would be at your own risk.
?
73,
Terry KM5UQ

--
Randolph C Koehler
KI4EZU AE VE?
KI4EZU {at} YAHOO {dot} COM
 

Ok, I will get something typed up on where to find things to change since they are moved around in Windows 10. Since I used a couple of articles on Repeater Builder, I want to make sure the original authors get credit.
?
Terry KM5UQ
 

开云体育





Randoloh Koehler
KI4EZU VE
ki4ezu@...?
360-633-0708
I have used Waris.py with chirp.to program the cmd/ht's out of band

-------- Original message --------
From: "terry dalpoas via groups.io" <km5uq@...>
Date: 3/8/25 2:19 PM (GMT-08:00)
Subject: [repeater-builder] Win10 CDM/HT Out of Band and Region Code Mods

Has anyone figured out how to do the out-of-band hex edit and the region code edit for the CDM/HT CPS running on Windows 10? If not, I have, and I've only tested it with my HT-1250 lowband that I've got on 6m.
?
The hex edit addresses for out-of-band programming in Windows 10 are different than the article on Repeater Builder, but the values you change are the same. I've made notes on what the addresses are.
?
I've also got notes on where to find the serialized string for the region code mod. I changed it to the value in the Repeater Builder article. I don't have a radio handy to test this on, but I don't see why it wouldn't work.
?
I don't know if anyone had shared this info in the group or not. If not, I would be more than happy to share my notes if anyone would like to do some further testing and possibly add to the website if all is good.
?
Again, I've only tested this with my lowband HT-1250 on 6m, and everything worked fine; however, this would be at your own risk.
?
73,
Terry KM5UQ

--
Randolph C Koehler
KI4EZU AE VE?
KI4EZU {at} YAHOO {dot} COM
 

Repeater-builder does not have the region code mod for CDMs.?
If you will send it to me I'll post it.
?

The CDM Notes page at Reepater-Builder has a couple of 200 MHz CDM
to 222-225 MHz conversion articles.
?
You DO NOT need to hexedit the CPS.?
The process described will enable a 42-50 CDM to be programmed to 46-54 MHz.
Then you will run into the design range of the front end and driver-final tuned circuits.?
They will need to be changed to go much higher.

?
I personally do not have any hands-on experience with low band CDMs but the
people I've talked to say that you won't get much over 52 MHz.
?
Mike WA6ILQ
?
 

Sounds good. Whenever I get a chance, I'll get something typed up and send it to you. Might be a little bit, my kids have a lot of school activities and they're keeping me pretty busy at the moment. I just wanted to share with yall where I found things on my Windows 10 machine to do the CPS mods.
?
Terry KM5UQ
 

One of the 6 meter repeater groups in SoCal has all of the hardware mods figured out for moving the CDM1250 low band up to 54 MHz with no degradation but they don't want it put out on the net for an unknown reason which I didn't push them on since they provided me the mods in person during a visit last year.
?
while driving thru LA last summer I dropped by a hams QTH and we did the mod to my CDM1250 for 6 meters on the spot so the documentation was not supplied to me.
?
As mentioned I had my cdm1250 6 meter modified on site and it works across 39 to 54 MHz with minimal Sens loss and 70 watts output on all of 6 meters.
?
I use it for CHP receive and 6 meter use while driving thru SoCal from my Oregon QTH to My Prescott AZ Qth and the radio works very well.
?
I just picked up a HT1250 tlast fall and I used the waris Python code which we used on my CDM1250 mobile to get OOB up to 54 MHz on both of my radios.
?
My Ht1250 works all the way up to 54 MHz without any mods and any sensitivity losses and 6.5 watts output.
 

This is just a thought. I had old sp50’s and if you don’t know they don’t like to move very well.?
I did the hex edit in those to cover 0.00 to 999
mainly to use on 2 meters but say I got a uhf one, I didn’t have to hex edit again.?
why not just hex edit to cover everything and if you get another radio it’s already done.?
worked for me.?

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