You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
The Feb 2025 Radioddity Giveaway Results are In! Click Here to see who won!

Reply to thread

Message

My neighbor brought me over a Cobra 25 that has no receive and no transmit. I get sound from the speaker when I touch certain parts of the circuit board. I have nothing out of the PA as well although I do hear scratchy sounds when keying the mic. I have tried other known working mics.
No transmit or wattage perceived when keying the mic. I do have 10.240 at the crystal, and do have the correct voltage at the VCO.
I am at a loss from here on.
If someone could give me a few clues on what and where to look I would appreciate it. I do have multimeter, freq counter and scope.
This is a virgin radio as well. I have looked for TSB's but find none for this radio
Thanks for any help I can get.
73's

[QUOTE="Smokinone, post: 774012, member: 58706"] My neighbor brought me over a Cobra 25 that has no receive and no transmit. I get sound from the speaker when I touch certain parts of the circuit board. I have nothing out of the PA as well although I do hear scratchy sounds when keying the mic. I have tried other known working mics. No transmit or wattage perceived when keying the mic. I do have 10.240 at the crystal, and do have the correct voltage at the VCO. I am at a loss from here on. If someone could give me a few clues on what and where to look I would appreciate it. I do have multimeter, freq counter and scope. This is a virgin radio as well. I have looked for TSB's but find none for this radio Thanks for any help I can get. 73's [/QUOTE]

Top Bottom