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Cobra 29 LTD Soundtracker - Clarifier unlock

Posted: Saturday 16th Dec 2006, 6:49
by RedEye
Does anyone know the proper parts to remove to do the unlock? The diode and resistor numbers are different on the soundtracker board...
Thanks in advance,

Posted: Friday 8th Jun 2007, 22:58
by marveylus22
1)Remove D-18 , R-110 , C131 and R-112. 2)Put jumper were R-110 was. 3)Take orange wire from delta tune and unsolder it from board then resolder it to Tr-23 (Solder to the pin closest to front of board. It should have around 8 VDC on this pin.) 4)Put radio back together and if all is done right you should slide transmit 5-6 KCs up and down. For more slide change D-16 to a 1N-4007

obra 29 Clarifier unlock

Posted: Saturday 9th Jun 2007, 0:14
by Rick
Change varicap diode D16. I don?t think this will work as 1N4007 is a general purpose 1 amp 1000 volt plastic rectifier diode and not a varicap diode.

Components ref in the above message are for a 29LTD and not Soundtracker model.

What is the point in making an AM only radio shift?

Rick.

Posted: Monday 11th Jun 2007, 1:39
by James Unit 198
Its AM rig so where are you going to go. AM carrier is 10khz wide and if you shift up or down 5khz you are now 5khz in to the next channel.

James.

Posted: Wednesday 25th Jun 2008, 23:56
by zeppfrog
+10 would be good

Unlock

Posted: Monday 30th Jun 2008, 14:41
by johhn
Thats what I thought, AM only.
Thanks Rick johhn