[1000mp] Humm

[Anthony J. Cioffi (N2KI)]

Good idea Stu.  Take it to the range and squeeze a few rounds through it.  Thanks for the heads up anyway, just in case
anyone I know thinks about buying one.

 
Anthony - N2KI
30MDG - 1187
 www.n2ki.com
 
 

-----Original Message-----
From: 1000mp-bounces at mailman.qth.net [mailto:1000mp-bounces at mailman.qth.net] On Behalf Of Stu Ritter
Sent: Thursday, January 21, 2010 8:19 AM
To: All about Yaesu 1000mp
Subject: Re: [1000mp] Humm



> 
> I wonder if you guys used an isolation transformer 1:1 on your audio line.  That usually will cure any ground hums or
loops.
> 
> I've been using a home made digital interface for years and just recently decided to try the Signalink USB.  It's a great
> device and super easy to install.  There is no need to worry about soundcard settings or incompatibilities.   The best part
> is I am able to use my existing interface cables.  All I had to do was change the sound device in my digital software.  Oh
> yeah, and no ground loops either.
> 
> 
> Anthony - N2KI

Anthony, I used isolation transformers on both audio lines going
to the computer and on the patch output line to the Rascal from
the rig. Nothing worked. Johnny, maker of the Isoterm that I
ended up buying, gave me some measurements to check to see
if there was sufficient isolation for the Rascal and the numbers
indeed showed sufficient isolation where there shouldn't have been
a ground loop hum. I bought his unit anyway as I was running out
of hair to pull and since it is only a hobby (but rather all encompassing)
I was sick and tired of things not working right. 

I won't sell this Rascal to another ham. 

Stu
N0LEF
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