Bill, hello from Tucson!!
I had the exact same problem. I traded a buddy for his switching type a.c.
power cube with a three-wire grounded a.c. line, as well as a three-wire d.c.
output lead. It powers a Dell Inspiron 9400 laptop.
Call me if you need to - 520-825-9619 Tucson.
Don - KC7WV
----- Original Message -----
From: Bill and Cindy
To: tentec@contesting.com
Sent: 09/17/2008 3:07 PM
Subject: [TenTec] Audio Hum on Omni-VII
I just got my new Omni-VII last week. It seems to be a great radio, the
second radio in the
shack is an Omni-VI+, so I knew what to expect......
There is a hum on the audio. The Omni-VII is keyed from an old Compaq laptop
running
N1MM software, through an Array Solutions SO2R switch box. The hum COMPLETELY
disappears when the AC/DC adapter power cord is pulled out of the laptop and
the
computer is on battery power. I don't remember this happening with the Omni
VI+....
Hmmm (no pun intended). Is this the AC/DC adapter going bad? The computer
apparently
takes 18.5 V at 2.7 A based on the listed output of the AC/DC adapter. What
if I just
power the laptop from the 13.8 V MFJ power strip that powers all the other
accessories?
Will this work?
Thanks, Bill / KO7AA in Tucson
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