[AMRadio] Sonar FS-23 to 10 Meter AM

[Byron Tatum]

Hello-
    I thought I would ask if anyone has ever converted a Sonar FS-23 over to 10 
meter AM? I picked one up at a swapmeet and have been studying conversion 
possibilities. Here is my plan to convert it, and I submit it for opinions, 
critical review, etc:
        1. Wire in permanently the 16.4 Mhz crystal in the 16 MC crystal osc 
circuit.
        2. Remove crystals from 4 MC osc circuit.
        3. Build a VFO tuned circuit to substitute for crystals in 4 MC osc 
circuit. The VFO will tune 6.400 to 6.800 Mhz
        4. The new injection freq out of first synth mixer is now 22.800 to 
23.200 Mhz. Retune T-5 to peak at this freq range.
        5. Repeak receiver front end for 28.800 to 29.200 freq range.
        6. Repeak transmitter circuits for same.
    I figured I would use the existing circuitry and just change the mixing 
frequencies. I should be able to build a fairly stable VFO for 6.4-6.8 Mhz 
range. This way I am not confined to crystal frequencies. Of course, I would 
leave the receiver 5.545 MC crystal osc and transmitter 6.000 MC crysta osc. 
intact and as they are.
                                        Thanks all, Byron WA5THJ