[App_rpt-users] (no subject)

[Gene]

The 100K resister did the trick. Thanks much for the help
73

"Jim Duuuude" <telesistant at hotmail.com> wrote:

>
>Not a big surprise. In that exact configuration, you're trying to make your radio "drink from a fire hose" as far as
>the audio level in concerned.  A mic level is typically in the few millivolt range and the URI is in the hundreds
>of millivolt range, so some attenuation between the URI and the mic input of ANY radio is quite necessary.
>
>As I recall putting a 100K resistor in series between the URI audio out and the MIC input of a modern Kenwood
>radio like that should do the trick (based upon the typical input impedance of a Kenwood radio). That's what
>we do with the TMG-707 and I have also done it with a D-700 and it worked well there.
>
>JIM WB6NIL
>
>
>From: Tremors834 at aol.com
>Date: Wed, 6 Oct 2010 13:24:54 -0400
>To: app_rpt-users at qrvc.com
>Subject: [App_rpt-users] (no subject)
>
>
>
>
>
>
>
>
>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?
>Thanks, 
>Gene
>KC2WDZ
>
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