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9. PANEL DESCRIPTION
All connectors for connecting computer, radio and accessories are situated on the rear panel of MK.
Rear Panel
(1) - RADIO
DB37F connector for radio interconnections. Detailed description you can find at Appendix A
(2) - RE/SS
Output keying mode switch for PA output.
RE - Relay contact
SS - Transistor collector
If the slide switch is in SS position, open collector of the switching
transistor is wired to the PAPTT output jack. Transistor can switch load
max. 48V/1.5A. This position is dedicated for all modern Power
Amplifiers with electronic keying. Check manual of your PA if
grounding of key input will switch PA to the TX state. Check also
power rating of this input if it does not exceed transistor rating.
Otherwise move slider switch to the RE position. This position
hardwires relay contact to the PA PTT RCA with rating max.
125VAC/2A 60VDC/2A.
(3) - PA PTT
PTT output for Power Amplifier. Output depends on RE/SS switch position.
RCA jack
TIP - Signal
SHELL - GND
(4) - REMOTE
MiniDIN6 for PS/2 keyboard or PS/2 keypad.
Second function of this connector is to provide an interface for future SO2R Extension box.
10
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