Hello All,

    I'm running a simplex node, the radio itself handles any tone modulation.

Its been said that the transmitted audio seems to be a bit too loud.  The URI is interfaced to a Kenwood TM271- 2m radio. Wired direct from URI pins 22 (Left AC audio out) and 20 (GRD) to the MIC and GRD pins on the radio mic jack.

    I don't have any test/calibration equipment but I figured I could lower the Transmitted Audio setting using 'radio-tune-menu'. Problem is that I have the "Set Transmit Voice Level" setting all the way down to 15 (0-999) and the transmit audio still sounds loud.

Here is Info from 'radio tune'

Output A set to voice

Output B set to off

TX voice level set to 15

TX tone level set to 200

RX squelch set to 500

 

I'm wondering if I may need to attenuate the interface line between the URI and Radio.

Suggestions anyone?