ORIGINAL: CP140
I think you've got a Hitec Spectra... radio, I think you can download a copy of the manual from the Hitec web site.
No, the Airtronics Spectra 7 PCM radio is a pre computer post 1991 Tx that has a huge selection of mixing features manually controlled by 37 pots and dip switchs under a front panel. Airtronics used the Spectra name long before Hitec, Hitec uses the Spectra name for their synth tx module and not their tx's. It is a superb older radio but cannot help with manual for the helicopter version. The fixed wing versions manual is quite minimal.
John