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It's a standard 25 LTD.

My Cobra 25LTD, the back-up radio I used on my trip to SC and back has no modulation all of a sudden. The last time I was heard by somebody was in NC when I got a radio check; no problems with audio then. Once home, I connected to a Dosey meter to check the AVG and PEAK readings and then MOD %...

I recently drove down to Bluffton, SC (just before Hilton Head Island), and then back up to the NE via I-95. Initially I had a Uniden PC-33 installed in my mobile until I got a report of a squeal in my XMIT audio (discussed in another thread here). I had a spare radio - a Cobra 25 with me and...

It's funny that you should mention retesting the radio - about an hour before reading this I did just that. What I found was that there indeed was a squeal...until I moved the mic further away from the receiving radio's speaker. Presto, no more squeal! I tested the radio on several channels and...

Andy, I decided to go with replacing TR-14/C-103 along with C-98 and C-94 and see what happens with the audio. I'll look into adding that jumper across D-13 if necessary (I forget where I read about doing that - wink, wink). Mike

Sorry I didn't answer you directly, but there are no toys in the radio - there is no PA jack on this radio. Mike

Andy, when I replace TR-14 and C-103 can I install a variable resistor somewhere in the audio circuitry to control the modulation levels without having to jump out the diode D-13, or can I do both? Mike

No talk-back or other toys installed...its just a plain Jane radio with the exception of L6 being spread and TR-14/C-103 removed. I'm gonna reinstall those 2 components as well as replace C-98 and C-94 for kicks and giggles (Mouser). There are 2 other components that I found that I want to...

Thanks Andy. I intended to replace TR-14 and C-103 down the road (no pun intended), but if there is more going on inside the radio, I'll just set it aside for now. I like its size though.

Thanks for the reply Robb. When I tested the radio initially in the mobile a week before the trip I connected it in the same manner as I did the day of the trip - I heard no squeals while monitoring from the mobile (cellphone to home phone). I used that same method to check the audio on my Cobra...

I’ve been off of CB for 20 years and I’m new here so please go easy on me. I have a Uniden PC33 that I got eons ago and I recently took it out to use on a trip to SC. Initial inspection: the power cord had to be replaced; TR-14 - 2SC1815 and C-103 - 0.001 uF Cap are missing from the board...