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Vertex Standard - Discussions regarding Vertex Standard professional and public safety radio equipment.

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  #1 (permalink)  
Old 01-16-2017, 4:40 PM
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Smile vx-4207-7 reband possible?

Ahoy!

Long time lurker on these forums. Any input would be greatly appreciated.

I have acquired a handful of vx-4207-7 rigs that are banded for 450MHz - 512MHz. I was wondering if it might be possible to get the radios down into the 70cm ham band, or would I be better selling these on ebay?

Thanks!
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Old 01-17-2017, 4:48 AM
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Yes you will need to hex edit the software to allow them down to 440. I don't have the instructions handy.
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Old 01-17-2017, 8:04 AM
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Quote:
Originally Posted by n3obl View Post
Yes you will need to hex edit the software to allow them down to 440. I don't have the instructions handy.
Thanks for the reply!

I've done some research on hex edits regarding vertex radios. Is the hex edit a mortification of the codeplug you read from the radio, or a modification you make to the programming software itself?
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Old 01-17-2017, 11:16 PM
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At first i used to edit the codeplug but since had found out it possible to find the strings in the exe file and modify. I however dont remember what i did.
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Old 01-17-2017, 11:41 PM
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Thank you n2obl for the info.

I was able to get the radio to go down into the 70cm ham band. I'll post what I did with the hope that this helps someone else.

Here's my set up:

Radio: Vertex Standard VX-4207-7-45
Computer: Windows XP Pro w/SP3
Interface Cable: 9-pin serial
CPS Software: CE59 v.4.01

Here are the steps I took to allow out of band usage:

1: Install the CE59 software.
2: Open a command prompt window.
3: Navigate to "C:\Program Files\Vertex Standard\CE59 for Windows"
4: Type in "ce59win -manu" (without the quotes).
5: Enter the password: "Developer Only" (without the quotes).
6: In CE59 click on the "Common" menu, then on the "Hardware" option.
7: In the lower right-hand of the dialog box under "Frequency Range" change the "From" field to "440.00000 MHz" and click the "OK" button.

You should now be able to input 70cm ham band repeater frequencies. It's always a good idea to make backups of codeplugs should there ever be a problem.

Also, I had problems using the "-manu" switch with the shortcut the software created. It wasn't until I ran the software from a command prompt that it asked me for the "Developer Only" password.

I hope this helps.

73's
-KF4TOV
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Old 02-04-2017, 4:32 AM
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EXCELLENT instructions, KF4TOV.
I got bored and tried Windows Enabler V1.1 to change the 450 to 440 under Hardware.
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Old 04-13-2018, 9:47 AM
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Hello, I have the same VX-4207 (450 - 512 MHz) and want to get it on 430 MHz. With the prompt I cannot get it changed. Could you mail the item so I can also re-program the radio? Thanks and 73, Paul
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Old 04-13-2018, 10:45 AM
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Quote:
Originally Posted by PA2VC View Post
Hello, I have the same VX-4207 (450 - 512 MHz) and want to get it on 430 MHz. With the prompt I cannot get it changed. Could you mail the item so I can also re-program the radio? Thanks and 73, Paul
The radio may not lock that far out of band. It would be better to buy a radio that natively covers 430-440MHz.
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Old 04-14-2018, 2:30 AM
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Quote:
Originally Posted by PA2VC View Post
Hello, I have the same VX-4207 (450 - 512 MHz) and want to get it on 430 MHz. With the prompt I cannot get it changed. Could you mail the item so I can also re-program the radio? Thanks and 73, Paul
https://windows-enabler.en.uptodown.com/windows
I think 442 RX is about the lowest without VCO tweaking.
You can try adjust the VCO using the built in Basic Alignment tool. I have NOT messed with this other than reading the radio.The range will show version D (451-519). Maybe someone can figure out how to fool it to a Version A?

For frequency expansion:
You will need to modify the defaultud.c59 file first (remove the read only).
Open the file, go to Common -> Hardware, open and turn On the Windows enabler, modify the freq in the bottom right corner, Save. Read your radio and modify the file the same way, then save. Modify your channels, save and then program the radio.
A flashing display means your VCO is definitely not locked.
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Old 06-08-2018, 2:14 PM
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Good afternoon I have a vx-p824 that is Ver H (380.100mhz - 449.900mhz) trying to change it to Ver D (450.100mhz - 519.000mhz) I am using CE76 and following the same steps as the CE59 I am able to get into developer mode ok able to make all changes under common/hardware changes from H to D make the edits ok then when I try to write to the radio it says "Hardware Missmatch" any ideas thank you
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