User manual

X10DR

1� Switched B+: Used to automatically turn on/off Se-

cure Wireless Microphone if connected to host radio

switched B+ output, if not, the user should supply man-

ual on/off switch. Note: internal speaker microphone

battery will still charge when the unit is turned off.

2� External Mic Audio: Audio from the Wireless Micro-

phone that is to be transmitted over the host mobile

radios transmitter. It is factory set for approx 80mV RMS.

3� Radio Mic Lo: This is microphone audio ground.

4� Receive Audio: Receive audio from the host mobile

radio that you wish to be sent to the Wireless Micro-

phone. Ideally, it should be sourced pre-volume con-

trol but can be post, as long as the host mobile radio’s

speaker audio has been sent for comfortable listening

in the vehicle.

5� Power: connected via a 1 amp in-line fuse preferably

direct to a vehicle’s 12V battery but can be any volt-

age from about 6-15VDC. Current consumption is typi-

cally 60mA/Max current 420mA@6V. (12V = <200mA)

6� Ext� PTT: Switched ground output designed to cause

the host mobile radio to transmit.

7� Emergency: Output intended to connect to the host

mobile radio’s emergency input. It is normally provides

an active switched ground but can be jumpered to be

active open circuit. The time held low (or high) is the

exact time that the user presses the Emergency button.

This output could be used for other functions such as to

trigger the panic function of a car alarm system, provid-

ing it is correctly “buffered” so as to not cause damage

to the mobile charger.

8� COR/squelch/audio unmute: Input designed to moni-

tor the receive status of the host mobile radio. Ideally, it

is driven by an “audio unmute” switched ground com-

mand in the host mobile. i.e. when the radio’s speaker

unmutes to pass audio then the COR input should tog-

gle in sync.

Installation & Connections