mtx9250 on 900

This forum is for the discussions targeted at converting various models of Motorola equipment to operate in the 900MHz Amateur Band.

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N9LLO
Posts: 788
Joined: Sat Sep 08, 2001 4:00 pm

mtx9250 on 900

Post by N9LLO »

Here are the modifications required to the trunking CPS R01.03.06-AA
edit the CPS_95nt.exe file as follows

old string 9428 BB37 new string D410 6835

Change the above at all the following locations
19C74
1A73B
87EB5
8BE58
1FC924
1FC958
1FCB94
1FCBC8
1FCF3C
1FCF70
1FCFA4
1FCFD8
1FD00C
1FD040
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n7slc
Posts: 93
Joined: Thu Sep 06, 2001 4:00 pm

It Works!

Post by n7slc »

U DA MAN!

I used the latest version of Hex Workshop on the .exe file, but could not
find any of the address locations you listed. Obviously, it's my lack of hex
editing experience that's the problem. SO, I just searched for the hex
strings and changed the ones I found.

It works well, and I am pleasantly surprised at the RX sensitivity of the
MTX9250.

Dan
N7SLC
N9LLO
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Joined: Sat Sep 08, 2001 4:00 pm

Post by N9LLO »

Dan,
Is your CPS r01.03.06 ? I will double check the addressing when I gat back to work Tues. Glad you were able to get it to work.

Chris
N9LLO
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n7slc
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Joined: Thu Sep 06, 2001 4:00 pm

Post by n7slc »

Yes, it's R01.03.06 October 2002

Your adresses are correct. Like I said above, it was my inexperience in
hex editing that was the problem. I just didn't know how to use the
Hex Workshop, but I figured it out.

Thanks Chris!

Dan
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Victor Xray
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Joined: Mon Dec 17, 2001 4:00 pm

Post by Victor Xray »

Those of you who are Hex-savvy, I'd like to know how those bytes translate into frequency limits. I'd like to use a similar modification on this CPS to extend the MTX8250's band limit from 806-865 to 806-870MHz.
mike m
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Joined: Mon Sep 03, 2001 4:00 pm

Post by mike m »

Just curious but what does the 9250 cost as it seems like a very new and expensive radio unless of course it is a buisness radio that is given to you thru a job of some type and then it would be nice for buisness and ham use of course. No problem with that in my book but I'm just curious you know.


Mike
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MSS-Dave
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Joined: Mon Jun 30, 2003 6:02 pm
What radios do you own?: XTL5K, NX300, PD782, Spark Gap

Post by MSS-Dave »

mike m wrote:Just curious but what does the 9250 cost as it seems like a very new and expensive radio unless of course it is a buisness radio that is given to you thru a job of some type and then it would be nice for buisness and ham use of course. No problem with that in my book but I'm just curious you know.


Mike
List price is right at $850 without added options.
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n7slc
Posts: 93
Joined: Thu Sep 06, 2001 4:00 pm

Post by n7slc »

mike m wrote:Just curious but what does the 9250 cost as it seems like a very new and expensive radio unless of course it is a buisness radio that is given to you thru a job of some type and then it would be nice for buisness and ham use of course. No problem with that in my book but I'm just curious you know.


Mike
The company I work for is selling them to a local company for around
$650 with high-cap battery and rapid charger.

Seems reasonable for what you get.

I prefer my MTS over the 9250, but that's just me. :)
N9LLO
Posts: 788
Joined: Sat Sep 08, 2001 4:00 pm

Post by N9LLO »

Good news. The same CPS mods I first posted above also work for the latest Trunking CPS version 2.00.00 Just search for the old string (9428 BB37) in the CPS_95nt.exe file and replace it with the new data (D410 6835) at every location found.


Chris
N9LLO
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Big BOB
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Joined: Tue Sep 04, 2001 4:00 pm

Post by Big BOB »

Perfect timing for the software update. I just received mine in the mail. Found one NIB full pad and display for $500.

Big BOB
John G
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Joined: Tue Nov 20, 2001 4:00 pm

Post by John G »

Is the software mentioned above HVN9067? Do you know if there is a way to get the 9250's little brother the 950 to do more than 9 conventional channels? Seems a waste to have a 16 position switch and only 9 positions usable.
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