User's Manual

TELEX PST-170 Transmitter, Continued Page 4
Specifications:
Audio Input:
Level, Microphone…………………………… 7.75 mV RMS (gain max) for rated deviation.
Impedance, Microphone, ……………………..10 K Ohm nominal.
Level, AUX input, ……………………………100 mV RMS for rated deviation, 25 KHz maximum.
Impedance, AUX input………………………. 100 K nominal.
Audio Level……………………………………0 to 42 dB Attenuation in 6 dB Steps.
Signal To Noise Ratio…………………………56 dB, uncompanded, 77 dB companded.
Pre-emphasis…………………………………..115 uSeconds
Maximum Deviation…………………………..25 KHz
Number of Channels…………………………..17, user selectable
Frequency Range………………………………72.1-75.9 MHz (in selected steps /channels.
See Channel Assignment List for further information.
Note: All frequencies within the above range are factory selected on legal frequencies and
Additional transmitter frequencies are not field programmable.
RF Power Output……………………………….80,000 uV/M @ 3 M., Maximum.
Channel/Frequency assignment:
Channel Frequency (MHz) Channel Frequency (MHz)
A 72.1 O 74.7
B 72.2 P 75.3
C 72.3 Q 75.4
D 72.4 J 75.5
E 72.5 K 75.6
F 72.6 L 75.7
G 72.7 M 75.8
H 72.8 N 75.9
I 72.9
Warranty Service Information:
Please see the separate Warranty Card supplied with this product.