I agree, and I suspect you are suffering from some version of "common mode"
rf interference.
I suggest:
1. Make sure your coax does not run in close proximity to your AC lines in
the shack if possible.
2. Make sure if you have other runs of coaxial cable that they're not
bundled together close to the radio.
3. Do you have an antenna rotator? Make sure that line is not running
directly next to your coax. A couple of turns on a large doughnut torroid
on the rotator line can be very helpful in breaking common mode
interference.
4. Where your coax enters the shack, form a coaxial balun, about 6-8 turns
on an 8" diameter and tape or tiewrap it in place. This will help keep rf
off your coax as well.
5. Make sure your amp and all radios and power supplies are grounded with
separate ground straps to a common tie point and thence to a good earth
ground...not cold water pipes or electrical system ground. Coax braid works
great.
You should not have any difficulty running a kw with your Jupiter or any
other radio for that matter. I have two amps in the shack one on each
Orion, and run them at 1500 watts out all the time during two radio contests
without any rfi or rf in my radios.
Good luck.
Larry, N0XB
Northfield, MN
----- Original Message -----
From: "Jim" <pywacker@fuse.net>
To: "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>
Sent: Saturday, May 27, 2006 10:19 AM
Subject: Re: [TenTec] RF in Audio Mods for Jupiter
For what it is worth I always find that I have to be more careful of
grounding & ground loops and much pay more attention to shielding and
place
several cores on cabling.
Jim
-----Original Message-----
From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
On Behalf Of Lyle Dunlap
Sent: Saturday, May 27, 2006 8:50 AM
To: n9vx@myway.com; Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] RF in Audio Mods for Jupiter
To N9VX
Are you sure its not your ant. system? I had a Jup for a while ran it
into
a KW with no RF problems.
Lyle W9FCX
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|