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Attempting to program a Maxon SM2150. Looking for proper prog cable. Have software.

 

Attempting to program a Maxon SM2150. I have software but having a tough time locating a programming cable.
The information I find tells me the SM 2000 series requires Maxon SMP 2000 programming cable.
I'm prepared to purchase a cable (or borrow).
It is my understanding that the prog. cable plugs into the mike socket (RJ). My SM 2150 has a 15 pin connector directly above the +12 VDC wires. Would this be a prog. connection? I have no info on this connector. Having the rear connector confuses things.
I'm not certain whether the radio programs thru the mic. connector or the rear connector. If the rear connector is for programming, then the SMP2000 would be an incorrect cable.
Hopefully someone will have an answer.
?
Tim
AE7TH
Vashon Is. Wa.
 

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---------- Original Message ----------
From: "TIM HARDY via groups.io" <w7trh@...>
Date: 04/04/2025 4:02 PM PDT
Subject: [repeater-builder] Attempting to program a Maxon SM2150. Looking for proper prog cable. Have software.
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?
Attempting to program a Maxon SM2150. I have software but having a tough time locating a programming cable.
The information I find tells me the SM 2000 series requires Maxon SMP 2000 programming cable.
I'm prepared to purchase a cable (or borrow).
It is my understanding that the prog. cable plugs into the mike socket (RJ). My SM 2150 has a 15 pin connector directly above the +12 VDC wires. Would this be a prog. connection? I have no info on this connector. Having the rear connector confuses things.
I'm not certain whether the radio programs thru the mic. connector or the rear connector. If the rear connector is for programming, then the SMP2000 would be an incorrect cable.
Hopefully someone will have an answer.
?
Tim
AE7TH
Vashon Is. Wa.

 

Checkout the files section.? Note: none of this is verified and YMMV,? I don't have this radio! Just interest in such things and late night technical ramblings.?
A check of the Service manual SM-2000 and it appears when the CPU puts the radio in programming mode (as per the programming manual) it switches over three lines IC412 4053.
DO, DI and SK from their normal functions on the 6pin RJ MIC connector , PTT, Mic and Hanger.? CS is also needed for 93C46 EEProm is present on the Mic connector.?
Tried the software SMP4004C in Dosbox-x and boy I miss the simple DOS programs, that actually work in a small amount of code.?
Just don't know how they generate the SK = serial clock pulses. The SMP2000 cable looks like a 9pin D to the 6 pin mic plug. Maybe worth a CRO look at the pins when trying to program to determine if there is a clock pulse there somewhere! CCT also shows an 8 pin socket inside the radio with same programing pins.?
?
Otherwise?
Then as a last resort I found page to directly read the EEProm and be able to write data from the software back into it. Again all care and no responsibility!??
might be useful information too.?
/Can only say good luck mate.?
?
Maxwelloau VK5AC.
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It may be worth a look to the SPC-4000 or SM-4000 cable.?

I have a similar GE version of this radio, sm-4150.?

Radio is programmed with a serial cable connecting to a six pin connector on the radios board, revealed by taking off the covers.



Benjamin, KB9LFZ?


On Fri, Apr 4, 2025, 18:02 TIM HARDY via <w7trh=[email protected]> wrote:
Attempting to program a Maxon SM2150. I have software but having a tough time locating a programming cable.
The information I find tells me the SM 2000 series requires Maxon SMP 2000 programming cable.
I'm prepared to purchase a cable (or borrow).
It is my understanding that the prog. cable plugs into the mike socket (RJ). My SM 2150 has a 15 pin connector directly above the +12 VDC wires. Would this be a prog. connection? I have no info on this connector. Having the rear connector confuses things.
I'm not certain whether the radio programs thru the mic. connector or the rear connector. If the rear connector is for programming, then the SMP2000 would be an incorrect cable.
Hopefully someone will have an answer.
?
Tim
AE7TH
Vashon Is. Wa.
 

Thanks Max.
Too involved for me. I thought I could find am SMP2000 prog. cable and program thru the mike jack. (I have no info on the D shell 15 pin connector on rear of radio above power cable. inlet. No info at all on the 15 pin connector.
I'm going to look for some Icom F-121 radios and shelve the Maxon SM-2150's.
Regards,
Tim AE7TH

On 04/05/2025 7:32 AM PDT maxwelloau via groups.io <maxwelloau@...> wrote:
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Checkout the files section.? Note: none of this is verified and YMMV,? I don't have this radio! Just interest in such things and late night technical ramblings.?
A check of the Service manual SM-2000 and it appears when the CPU puts the radio in programming mode (as per the programming manual) it switches over three lines IC412 4053.
DO, DI and SK from their normal functions on the 6pin RJ MIC connector , PTT, Mic and Hanger.? CS is also needed for 93C46 EEProm is present on the Mic connector.?
Tried the software SMP4004C in Dosbox-x and boy I miss the simple DOS programs, that actually work in a small amount of code.?
Just don't know how they generate the SK = serial clock pulses. The SMP2000 cable looks like a 9pin D to the 6 pin mic plug. Maybe worth a CRO look at the pins when trying to program to determine if there is a clock pulse there somewhere! CCT also shows an 8 pin socket inside the radio with same programing pins.?
?
Otherwise?
Then as a last resort I found page to directly read the EEProm and be able to write data from the software back into it. Again all care and no responsibility!??
might be useful information too.?
/Can only say good luck mate.?
?
Maxwelloau VK5AC.
?
?
?

 

Yes Tim. The cables seem to have gone the way of the dodo!?
Good luck.

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