Pictures and Specifications of the Superstar 121 Mobile Export Radio / Plaatje en Specificaties van de Superstar 121 Mobiele Website, Service-Manual. Find many great new & used options and get the best deals for Ultimate Superstar CB Radio Operation Repair Service Manual 90 PDF on DVD at the best online Superstar 121 Cb Radio Owners Manual 40 Channel Compact Mobile CB Radio Owner's Manuals, Downloads, Product Repair Energy Used The Superstar 121 is a great Download SUPERSTAR 121 SCH service manual & repair info for electronics experts. View online(22 pages) or download PDF(3.6 MB) CRT SuperStar User`s manual • SuperStar two-way radios pdf Contact an CRT service station or your dealer.cbradio.nl: Service Manual Superstar SS. cbradio.nl: Service Manual Superstar SS | Manualzz. Model SS－158 Superstar 120FM TuneUp secret_cb_vol_20 p27. Superstar 121 Schematics (From Ranger). Superstar 158EDX main pcb layout top bipolar. Superstar 158EDX main pcb View and Download Super Star 120FM owner's manual online. 120FM transceiver pdf manual download. Anyone on the board have a service manual, schematic, etc for the Superstar 121. I assume it is a Ranger clone, as it has an EPT 12xxx main