DTC Communications Inc. T2500 Benutzerhandbuch

Microphone mounting 

technique using rubber band 

and tape.

Audio Circuit and Body Mounting Tips:
All body worn transmitters are susceptible to clothing noise. Reducing this 
noise is accomplished in a variety of ways. Attach the transmitter to the 
body with a secure mounting method, such as an ace bandage or a custom 
harness to reduce rubbing. Then follow these steps:
1  Locate the microphone in the desired location.
2  Always provide a small amount of strain relief on the microphone cable 

itself. This reduces the noise caused by the microphone cable and 
element being tugged and prevents cable damage.

3  Secure the microphone cable to the body with medical adhesive tape 

in at least two spots, the final being about an inch below the element. 
Remember to leave a strain relief loop!

4  Completely cover the microphone element with an ordinary Band Aid™. 

This provides a damped baffle for the microphone and a slick surface 
for clothing to rub on, and actually does not negatively impact the audio 
pickup level. 

The “noodle” antenna may be adjusted over the frequency range of 150 
MHz to 174 MHz by adjusting the amount of wire that is folded back 
along side the end of the antenna. The total length may be calculated by 
the following formula.
 
Length (inches) = 2950 / (Freq MHz)

NOTE: When using an external microphone, do NOT connect the Mic 
GND to the Battery GND or noise may be introduced.

Noodle Antenna

Adjustment