[TenTec] SS last weekend

[Ken, KA0W]

No problems with rf in my shack with the Orion II and
the audio lines, etc. Antennas are right above me and
power levels from 50 to 1500w. I find my Orion II
rather RF proof at my installation. 

Maybe some grounding would help?

73,

Ken, KA0W



 

--- Ken Brown <ken.d.brown at hawaiiantel.net> wrote:

> The ferrite is keeping RF picked up by to headphone
> cable from getting 
> into the electronics and causing the thump, right?
> So then is the Orion 
> not designed to work around strong EM fields,
> without having to add 
> attachments to your headphone cable?
> 
> I have had RF intrusion into various rigs, cause
> troubles. Every time it 
> was due to a poorly made cable connected to an input
> (usually 
> microphone) never to a headphone output jack. So I
> know that even the 
> best rigs may be susceptible to strong RF in the
> shack. On the headphone 
> jack though? From just the pickup on the headphone
> cable? Tell me it is 
> not true, and the guys with this problem are either
> doing something 
> really wrong, or have defective rigs. This is
> Ten-Tec premier rig, right?
> 
> DE N6KB
> 
> 
> 
> Ron Castro wrote:
> > The thumping in the headphones on 15 meters is not
> an uncommon problem.  Try 
> > it on 10, and it will probably be more pronounced,
> and even more so if you 
> > run power.  You need to wrap the end of your
> headphone cable around a 
> > ferrite loop like the FT-240 43 or 77 mix.  That
> fixed the problem for me 
> > and for a few others here on the list.
> >
> > Ron Castro
> > Chief Technical Officer
> > Results Radio, LLC
> >
> >
> >   
> >   
> 
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