Today I found a great article on the Cobra 138 XLR which is funny since one just came into my hands this week! I’ve owned 3-4 of these over the years and always enjoyed running them due to their great on-air audio performance, and no hassle layout. Eventually I always drift away towards radios with more features but these are one of those classic radios that just plain work…and work well.
Here’s a link to the IEEE Spectrum article – https://spectrum.ieee.org/consumer-electronics/gadgets/the-consumer-electronics-hall-of-fame-cobra-138xlr-single-sideband-cb-radio
And here’s a link to a great resource for mods/info on the Cobra 138 XLR – https://unit399.wixsite.com/858ssb