Pin - Signal Name (Continued)
p - MAIN SQUELCH DISABLE
When this input is pulled to ground, the main squelch conditions are overridden.
q - WIDE BAND MAIN RECEIVE AUDIO OUT
This output is the single ended audio output. It is capable of driving a 2k Ohm
impedance and has a bandwidth of 1 Hz to 27.5 kHz.
r - DF ENABLE
Grounding this input enables the DF audio output. DF function only available when
using the main receiver. Digital channels do not have DF capability.
s - DF AUDIO
This output produces an output proportional to the AM signal. The output has a 3 dB
bandwidth of 1Hz to 10 kHz. The output will drive a 2k Ohm impedance. The output
is adjustable from. 1 Vrms to 1.5 Vrms and set to 1.4 Vrms (4Vp-p).
t - RESERVED SPARE B
This pin is used to transfer information to the MTM guard.
u - HOMING SIGNAL STRENGTH
This output produces an output based on the signal strength that varies between 0
and 8 VDC, and is capable of driving a 2k Ohm load. This signal has a 3 dB
bandwidth between DC and 50 Hz.
v - MAIN RECEIVE 180 ENABLE
Grounding this input causes 180 degrees of phase shift in the main received audio.
w - WIDE BAND GUARD RECEIVE AUDIO OUT
This output is the single ended wide band guard audio output. It is capable of
driving a 2k Ohm impedance and has a 3 dB bandwidth of 1 Hz to 27.5 kHz. The
output is adjustable from .1 Vrms to 1.5 Vrms and set to .6 Vrms.
x - GUARD RECEIVE 180 ENABLE
Grounding this input causes 180 degrees of phase shift in the guard received audio.
y - GUARD RECEIVE AUDIO
This output is the single ended guard audio output. It is capable of driving a 2k Ohm
impedance and has a 3 dB bandwidth of 1 Hz to 3kHz. The output is adjustable from
.1 Vrms to 1.5 Vrms and set to .6 Vrms.
z - TRANSMIT 180 ENABLE
Grounding this input causes 180 degrees of phase shift in the transmitted audio.
This phase shift may be required when using an external encryption device.
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