Not easily modified until now. The IF is 10.695 MHz, and the Ch.1 AM VCO is normally 16.270 MHz. These excellent old SSB rigs used banks of 8 MHz and 11 MHz crystals in a very complicated synthesizer circuit. The IF is 7.8 MHz, and the Ch.1 USB synthesizer output is 34.765 MHz. The quality PC Board has a solder mask and a printed parts legend for easy assembly.
Complete kit contains all parts except switch.
The 16-page instructions include circuit theory, crystal calculations and suppliers, hookup examples for many popular PLL and crystal CB radios, schematic, parts list and layout, installation and alignment, troubleshooting hints, and more. Crystals are not included due to the large number of possibilities. An RF Signal Generator would also be useful for pre-alignment before installation. These are generally found in the cheaper AM-only rigs, not SSB types. For many radios our simpler kits will do.