Yaesu FTM-310DE FM/C4FM 55/50W Dual Band Transceiver.

The FTM-310DE series consists of the FTM-310DE ASP and FTM-310DE which shares the core feature set of the FTM- 310DE ASP. However, the FTM-310DE requires the optional SPU-1 board for ASP (Audio Digital Signal Processing) operation. *
The FTM-310DE series provides true dual band operation with two different receivers on different bands or within the same band including C4FM/C4FM simultaneous receive (V/U, V/V, U/V, U/U). The power output is 55W on VHF and 50W on UHF (55W/50W, 25W,5W are selectable). Heavy Duty Heat Sink with FACC (Funnel Air Convection Conductor) ensures stable and reliable transmit power.
The total audio output is 6W, which is generated by AESS (Acoustic Enhanced Speaker System) consists of the the 3W front speaker inside the control-head and the 3W main-unit speaker. By varying the phase, output balance and frequency characteristics of the front and main-unit speaker output, AESS achieves clear and high-fidelity audio while ensuring reliable communications even in outdoor or noisy environments.**
Full Dot-Matrix display conveys information with clarity and precision, enabling users to interpret the versatile operating status efficiently.
Some fundamental and remarkable features of the FTM-310DE series are:
- C4FM Digital Mode:
C4FM Digital is the standard mode for professional communication devices and has excellent audio quality (BER: Bit Error Rate Characteristics) compared with GMSK digital. By adding YAESU’s original error correction technology, the FTM- 310DE series has achieved comprehensive high-grade communications.
- Super-DX + ASP (Audio Digital Signal Processor):
In both C4FM digital and FM analog modes, the sensitivity of the RF amplifier can be increased by activating the Super-DX function. When operating in FM analog mode, the ASP can be activated in addition to the Super-DX. ASP AUTO/ MANUAL modes are selectable. In ASP AUTO mode, Super-DX is always turned on and ASP automatically activates when the transceiver detects weak signals in FM analog mode. In ASP MANUAL mode, Super-DX and ASP can be manually switched on and off each time [S-DX] key is briefly pressed.