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.
