4
2. Quick Description of Controls and Connectors
(See Section 5, Operation for complete details)
Front Panel
1. Overload LED
Red LED indicates too high signal level into DSP-59+.
2. Normal
Yellow LED indicates normal signal level into DSP-59+.
3. Headphone Jack
Stereo headphone jack for 1/8” stereo plug only.
4. Bypass Switch
Press in to Bypass DSP filtering.
5. AGC switch
Press in to activate AGC.
6. HP/LP / BP
Push-button out - Highpass/Lowpass for Voice mode. HP/LP uses blue letters.
Push-button in - Bandpass for Data and CW modes. BP uses red letters.
7. Nrt / Tone Switch
Push-button in - Heterodyne elimination for Voice (HP/LP) mode. HP/LP uses blue
letters.
Push-button in - Marker Tone for CW and Data (BP) modes. Also selects RTTY
Remodulator. BP uses red letters.
8. NRr
Push-button in - random noise on for Voice (HP/LP) mode. HP/LP uses blue letters.
Push-button in - random noise on for CW (BP) mode. BP uses red letters.
9. High Pass / Center Freq Control
Selects the high pass filter in the Voice (HP/LP) mode - use blue letters.
Selects the bandpass filter center frequency for CW and Data modes - use red letters.
10. Low Pass / Bandwidth Control
Selects the low pass filter in the Voice (HP/LP) mode - use blue letters.
Selects the bandpass filter bandwidth for CW and Data modes (BP) - use red letters.
11. Gain / Power On/Off
Turns power on and off, and volume control for speaker output.
Back Panel
12. Power In
12-16 Volts D.C. Use 5.5 mm/2.1 mm matching plug.
Center positive.
13. PTTI
Switch to ground to mute speaker output in Voice mode, and to electronically
bypass DSP-59+ in CW and Data modes for sidetone monitoring
.
14. Audio Input
Audio input from radio speaker output.
15. Line Output
Line level output to multimode data controller. Gain control doesn’t vary this output.
16. Speaker Output
4-8 ohm speaker output.