Can anybody guess what the extra channel lay out is for my radio? The extra channels are in the Tone and Brt/Dim switches. With the tone switch on Hi and the Brt/Dim switch on Dim. I am on reg CB. Put the Tone switch on Lo and leave the other one on Dim. I have the lowers. Does any one have the chart for this configuration? My radio gets good reports with both the Astatic 575 and 636 mics. It came with the OEM Cobra mic and Pwr cord for $59.00. Sent to my house from Ebay last year. Replaced the Galaxy 33 in my slip seat box with it so I could work SSB DX. Some one added a RCA jack and 13.5 pwr plug on the back for a freq counter. It's a real nice radio for the money! I am not going to sink any money into this radio because I already have bigger and badder radios. If any one knows the channel lay out this one please post. 73's from So CA.