low modulation & watts cobra 148 gtl st

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Location: carmi,il

low modulation & watts cobra 148 gtl st

Post by scott3696 » Wednesday 4th Nov 2009, 19:10

Radio Make and Model: cobra 148 gtl st thailand
PCB Number:unknown
PLL Number:mmb8719
Test gear available:swr watt modulation meter, volt meter and freq counter
Symptoms: low modulation

What is working: everything seems to be working just low modulation around 60%

What has been tried:changed driver and final not much help, gain about a watt but no extra modulation

Did it suddenly happen ?: unknown just recieved this radio
Anything else that may be of help?: readjusted driver and final bias no help there either

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