Cobra 148 GTL 120-Channels Base CB Radio "10 22 schematics" Questions

...22=26.905 27=26.955 32=27.005(ch4)18=26.855 23=26.935 28=26.965(ch1)  19=26.865 24=26.915 29=26.975(ch2)Position 3: sw1 up, sw2 ...