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[aprssig] Problems with hum on TX audio.

Jacques C. Voisin n4jcv at earthlink.net
Mon Feb 27 19:41:55 UTC 2006


Check your DC power supply with a meter on AC if it shows voltage where is
your hum.

 

Jacques C. Voisin, N4JCV
-ARES/RACES of Orange County ,FL
AEC Training- Skywarn Manager Orange County
-American Red Cross of Central Florida
Communication Chairman
Orange County Coordinator DAT
Trustee of N4ARC station

n4jcv at earthlink.net
http://www.w4mco.org

-----Original Message-----
From: aprssig-bounces at lists.tapr.org [mailto:aprssig-bounces at lists.tapr.org]
On Behalf Of Patrick Green
Sent: Monday, February 27, 2006 2:36 PM
To: TAPR APRS Mailing List
Subject: Re: [aprssig] Problems with hum on TX audio.

 

Yes, that's now on the list to try.  Also going to put the radio and TNC
both on battery power since the hum is 60 hertz.

73 de Pat --- KA9SCF.

On 2/27/06, w0ep <w0ep at frii.com> wrote:



Is it possible to try the 2200 with the microphone, just to
key it up and see if you get the hum?  That might remove
the cable and/or TNC from the equation.






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