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Message |
    
Mrgoody
Junior Member
Username: Mrgoody
Post Number: 48
Registered: 1-2005
| | Posted on Thursday, July 24, 2008 - 11:37 am: | 
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Hello Guy's:I'm, having a problem that i don't understand here(not nearly a tech either..lol) ...I put an on board amp.kl203 in a (148gt)but anyway When I key my mic. I get a good swing out of it for a few secound's and then it the needle in the meter back's all the way back down then there's no modulation going on...Any help or suggestion's |
Tech858
Moderator
Username: Tech858
Post Number: 161
Registered: 10-2007
| | Posted on Thursday, July 24, 2008 - 5:18 pm: |
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I do know that the RM KL203 linear amps have had some issues with the RF sensing circuit in them as I have had to replace a couple of the trannys in my one with ones of better quality and a higher current handling , before I replaced the parts the amp used to lock down on TX either that or drop power rapidly when it got a little bit hot , unsure of the prob with the loss of audio though but where have you taken the power for the amp from ? what size of power supply are you using ? are you using heavy duty power lead to handle at least 15 amps ? how much power are you driving the amp with dead key ?
Tech858/Jim
CEF#0858 ~ CEF HAM#0230
CVC#0116 ~ MM0TXO
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