Technical data

VHF/AM RADIO FSG 2T

4 Recommended Set-up Sequence

44 FAV_D10048 June 2014

4.2.4 Set-up using two amplified / Standard Carbon Microphones, separate

on Mic 1 input, pin 1, and Mic 2 input, pin 3

 This test must be performed with headphones to evaluate the quality of the MIC

signals via Transmit Sidetone!

 Verify the settings of the DIL switches on the rear of the radio (DIL switch "Mic 1" set

to V, DIL switch "Mic 2" to V, DIL switches 1 and 4 to "OFF", DIL switches 2 and 5 to

"8mA").

Mic 1 Mic 2

 Setting the MIC Level of microphone connected to pin 1 of DB-15 connector:

Press the PTT key. The TX/RX LED should light steady RED. Speak loud, clear and

close into the corresponding microphone. Observe the TX/RX LED, it should flicker

YELLOW. Listen to the TX Sidetone in your headphone; it should be clear and

undistorted.

 If no Sidetone is audible or TX Sidetone is distorted try to increase audio quality

by switching DIL switches "Mic 1" either to "2mA" or to 10 mA ("2mA" + "8mA").

 If the TX/RX LED does not flicker, turn with a suitable screwdriver "Level Mic 1"

potentiometer till the TX/RX LED flickers YELLOW while transmitting and speaking.

When you stop talking the TX/RX LED should light steady RED!

 Release the PTT key, the TX/RX LED must turn to clear (no reception) or to GREEN

(RX signal).

 Setting the MIC Level of microphone connected to pin 3 of DB-15 connector: