GM900 programming problems

stevey · Post by **stevey** » Mon Sep 20, 2004 11:04 am

I have been having problems with a gm900 that I acquired.I believe the codeplug is corrupt but I can't even extract it from the unit.The display on the radio lights up but there is no channel number? The three led's keep flashing in sequence. I know this radio is trying to tell me something....( maybe to throw it in the scrap pile)When I try to extract the possibly bad codeplug, the downloading sequence starts but only 1 block is read and than a checksum error appears.This is using both astro lab rss and the gm900 rss.Could this mean my eprom is fried or perhaps blank?
Any solutions would be most welcome..thanks
Steve

Ed · Post by Ed » Mon Sep 20, 2004 1:06 pm

Maybe you could "clone" an exact model/type codeplug? The gm-900 is a bit difficult to programm, you need a clean dos enviroment!

Ed

stevey · Post by **stevey** » Mon Sep 20, 2004 6:18 pm

How can a fella find a codeplug for this model?

Ed · Post by Ed » Wed Sep 22, 2004 5:23 am

Give the exact typenumber, maybe i've got some around here!

Ed

stevey · Post by **stevey** » Thu Sep 23, 2004 8:33 am

Thanks for the reply,
There doesn't seem to be a label on this unit and I never did get a model number from the download since that didn't work to well.I guess there must be some kind of identification on the inside.
Steve

EKLB · Post by **EKLB** » Thu Sep 23, 2004 8:53 am

If in fact your code plug is corupt = then you really have nothing to loose by trying the next sugestion.

Give us what you believe to be corect info for this GM900 radio and see if we cant come up with a possible match per your specs you think the radio is.

Wattage = ?
Freq spread = ?
Number of channels it is capable of = ?
25 or 12.5 khz freq (Wide band or Narrow Band or Both) = ?
You got he idea so give us any and all the info you can think of.

Then maybe we can supply a code plug and you can try to load it into the GM900 and see if it works .

Just a thought.

EKLB

stevey · Post by **stevey** » Sun Sep 26, 2004 4:14 am

Thanks for the help so far
It's frequency spread is 136-174Mhz
16 channels
25 watt
It's channel spacing was 12.5 Khz
I think the partial model # is MR304B
Steve

Ed · Post by Ed » Sun Sep 26, 2004 1:38 pm

Does it have a normal controlhead (display and mike) or the handheldcontrol version. The MR304B is a German made GM-900. Both types of codeplugs are on my laptop...So drop me a PM!

Ed

Andreas · Post by **Andreas** » Sun Sep 26, 2004 10:51 pm

Use the GM/GP900 Lab and create a default codeplug(M01KHK9AN3BN).
Retune it and you have a good radio.

Andreas

Post by **mark78** » Fri May 18, 2012 12:53 pm

ahoj guys and cheers to the Lády´s

i have the german made gm900 (mr503b) M01RFK9AN3BN its an uhf radio and its go from 403 mhz - 470 mhz,with the LCD Special Mike (GLN1052C),iam use the rss r06.03.00 or the rss r06.06.00 (lab gp/gm).
i read the codeplúg´s first out,then i programming the channel and the Frequencys but nothing brig this radio to the air:(
the dont crashed,but when i have one radio on the ribbox (servicetools.xxx) and the right cable,and i push the ptt they sen on 403mhz (i checked thid
s with my frequency counter from aceco).
i have 4 from this radios without a controlhead (they are Handheldcontrolled) and i have 1 with controlhead with the same modell number MR503/m01RFK9AN3BN but this i can´t also not bring to air,i dont what ihave to do now?
anyone here and can please help me the Kraut;)
73 de mark

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Re: GM900 programming problems