[Orion] RFI from Orion mic input - bad info

[Tom Wagner]

I had problems with RF & the Orion.  For that matter, I had
some problems with RF with my TS-850.  Removing the Heil mic
in both cases would cure the problem.  The solution?

I put an unun (specifically a RadioWorks T-4 Plus) on the 
feedline from my matchbox.  Too much rf was being induced
into my ladder-line fed dipole and landing in the shack.  The
unun cleared it up.  

ymmv

73,
Tom Wagner - N1MM
Check out the N1MM Free Contest Logger at:
http://www.n1mm.com
http://groups.yahoo.com/group/N1MMLogger/
(and yes, it supports the Orion)

-----Original Message-----
From: orion-bounces at contesting.com
[mailto:orion-bounces at contesting.com]On Behalf Of Duane A Calvin
Sent: Wednesday, April 21, 2004 11:50 PM
To: orion at contesting.com
Subject: [Orion] RFI from Orion mic input - bad info


I wrote the other day that the Orion I used a few months ago had no RFI
problem with a standard Heil ProSet with the Heil-made Ten-Tec adapter. 
Well, I received my own Orion last night (yay!) and found that I must
have a faulty memory (too much RF).  I was  chasing YA8G this evening on
20m CW,  unsuccessfully, and decided to switch on the Alpha.  Well, at
only 500W out the lights on the front of the Orion were lighting up like
a Christmas tree when the rig keyed.  I found that if I pulled the Heil's
microphone connector (which also carries the footswitch connector), the
RFI went away.  So it looks like I have some work to do on getting this
straightened out.  My apologies for the brain f*rt.  

On the other hand, other than a slightly "tight" encoder on the PBT/BW
knob, the rig is a real joy.  I'm still getting used to the controls
again.

        73,  Duane

--------------------------------------
Duane Calvin, AC5AA
Austin, Texas

http://home.austin.rr.com/ac5aa
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