Is the Acom 1200S frequency expandable? mars mod?

[Bob Pyle]

Can the Acom 1200S transmit frequencies be expanded? mars mod? I see the 600S is expandable by removing 2 diodes...

 

[Bob Pyle]

Found it!!! Same mod as the 600S. Remove diodes 202 and 203 on the cpu board. You can find it and pics on DX engineering web site. Works just fine.

 

[rikk101]

Found it!!! Same mod as the 600S. Remove diodes 202 and 203 on the cpu board. You can find it and pics on DX engineering web site. Works just fine.

Good morning Bob. How goes the ACOM 1200S after mod? Still working good? I need to mod mine for MARS ops.

 

[OH7XM]

Can the Acom 1200S transmit frequencies be expanded? mars mod? I see the 600S is expandable by removing 2 diodes...

Greetings, did you got scematic ,, need to know where they are located

 

[Bob Pyle]

Good morning Bob. How goes the ACOM 1200S after mod? Still working good? I need to mod mine for MARS ops.

Sorry for the late reply but yes, it works fine!!

 

[Bob Pyle]

Greetings, did you got scematic ,, need to know where they are located

 

[Udo]

Question: Did you just desolder the D202 and D203 or did you bridge the poles of the two (connect them)? My 1200s no longer starts after the mod?
(13ct1009@gmx.de)

 

[Bob Pyle]

Question: Did you just desolder the D202 and D203 or did you bridge the poles of the two (connect them)? My 1200s no longer starts after the mod?
(13ct1009@gmx.de)

remove only

 

[Udo]

I did that but then it wouldn't start anymore, soldered it back in and it would work again?I bought the new Acom1200s and it also shows 26,000-30,000MHz when the diodes are in but when I want to send at a frequency of 27,315 it says frequency violation. If I unsolder the diodes it won't start anymore (display lights up dark, no CW piping)MFG13ct1009 Udo

 

[Bob Pyle]

I would call or email Acom. They are very helpful and know this mod.

 

[Udo]

ok werde berichten