Technical data

VHF/AM RADIO FSG 2T
3 Installation
June 2014 FAV_D10048 37
3.5.2.3 Standard Carbon, amplified Electret, amplified Dynamic Microphone(s)
IMPORTANT!
 Panel jacks of PJ-068 type may only be used with amplified / carbon type
microphones!
 Clean the PJ-068/PJ-55 connector system regularly and check contacts for
sufficient spring-loaded force. This is especially mandatory under vibration
operating conditions.
 A Standard Carbon (amplified) Microphone connected to a Dynamic MIC
input will dramatically overmodulate the transmitter!
 Standard Carbon MIC input range = 80 mV … 500 mV.
The FSG 2T default input for Standard Carbon microphone(s) is pin 3 of the Standard
DB-15 receptacle.
For tandem configuration two Standard Carbon microphones can be connected
parallel to pin 3 of radio FSG 2T. But since matching can be a problem we recommend
to connect the second microphone to pin 1 of the receptacle. Refer to § 3.5.2.1 for
microphone setting! This allows individual adjustment of the MIC sensitivity for each
MIC input (refer to hook-up diagram Figure 3 - 7).