whats difference 450 or 450D
- 400 MHz built-in IF DSP
- Built-in Electronic Keyer
- LCD Multi-function Display.
- Bar-Graph Metering
- Built-in TCXO ± 1 PPM/hour (after warmup)
- AGC Fast-Slow-Auto-Off Selection.
- Clarifier adjustment
- Dedicated Data Jack for FSK-RTTY
- User functions configurable by menu
- Digital voice announcement of frequency, mode and S-meter
- 500 Regular Memories and Two voice memories
- CW Beacon function
- 10 kHz Roofing Filter