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Re: [TenTec] Scout 555 MIC Gain Question...

To: tentec@contesting.com
Subject: Re: [TenTec] Scout 555 MIC Gain Question...
From: Ben Hall <kd5byb@kd5byb.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sun, 28 Mar 2010 14:41:13 -0500
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Hi Bob,

Great suggestion!  I'd not thought that the Ten-Tec would be an 
electret, but it is.  (Well, at least the one that came with it and the 
desktop 707 are)  So I checked the voltage - 9.9 volts.  This is higher 
than the +4 volts shown in the manual.  But a quick check of the 
schematic shows that the mic voltage come from the regulated +10V line 
thru a 680 ohm resistor.  So unloaded, it will be the full regulated 
voltage...

thanks much,
ben


On 3/28/2010 2:00 PM, Bwana Bob wrote:
> Ben:
>
> No, that is not normal. I run my Scout mic gain between 9 and 10
> o'clock. I get plenty of audio and good reports. The Scout seems to do
> best with low Z dynamic mics. If you are using an electret mic, make
> sure there is mic preamp  voltage from the Scout on pin 4 of the mic jack.
>
>
>                               73,
>
>                               Bob WB2VUF

-- 
Ben Hall, kd5byb@kd5byb.net - ALWAYS OUTNUMBERED, NEVER OUTGUNNED.
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