I have an almost mint condition Courier Tradesman that was supposedly never powered up until after I received it. I don’t believe they’re real rare, you can find the manual on CB tricks, but you may wait years to find one on Ebay. After all, who wants a 4 channel crystal controlled radio? This was Courier’s early introduction into solid state. It was made during the period when a few channels above 23 were allocated just for business purposes. At that time you needed to complete a special business band application to use it legally. The manual states you could order one from the factory anywhere from 26.620 to 35.98 mhz. I left the tag on mine showing it came with a set of ch27 crystals. Shortly after I got tired of monitoring ch27, I tried a pair of ch19 crystals. I have plenty of those in stock, but only the 27.185 transmit crystal was on frequency. A 26.730mhz crystal is used on ch19 for receive on most sets, that’s 455khz down. This oddball needed a crystal that’s 455khz up. Yep, I special ordered one anyway. It cost me $35. That’s more than I paid for the radio, but I occasionally enjoy using these unwanted old crystal paired radio sets. BTW It has great sounding mic along with its original cord. Truly a quality piece that’s standing the test of time.
