Trig TY91 dual control (double seater) VHF-radio 8.33kHz/25kHz 6W [01451-00 - Order now at Glider-Equipment!
Trig TY91 Dual Control VHF Transceiver | Aircraft Spruce
Trig TY96 (8.33kHz) (p/n: 01227-00-01)
Century Avionics - TRIG TY91 AND TY92 – VHF RADIOS The TY91 and TY92 radios provide light sport and general aviation pilots with a compact, fully certified 25kHz / 8.33 kHz VHF
The Lowdown on 8.33kHz Radios - Digital Pilot School