Bob:

Sue and I checked everything yesterday afternoon, and nothing seems wrong
with regard to the antennas.

I also checked, and all SWR's are as I would expect.

I might try to make a piece of coax with common mode chokes on either end,
as Tom Fowle suggests, but it is starting to get too late this week-end to
make and install it to see if it makes a difference.

In the meantime, I'm going to make another short ground cable, and connect
it between the common ground on my MFJ feed-through panel and the ground
screw on the nearest outlet in my shack.

I don't think this will make a difference, but it certainly can't make
anything worse at this point.

Thanks for the continued thoughts, Bob.

Tom Behler: KB8TYJ


-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Bob Tinney
Sent: Sunday, February 21, 2016 2:48 PM
To: [log in to unmask]
Subject: Re: RFI Update

Tom,

This RFI can be really hard to find, but see if your antennas are lower than
they used to be with all of the wind we have had lately, or perhaps, one of
the antenna wires is wrapped around a tree limb. Good Luck!

Bob, K8LR, [log in to unmask]

On 2/21/2016 2:26 PM, Tom Behler wrote:
> Steve and all:
>
> Just as an experiment, we disconnected the wire between the main 
> ground rod right below my shack window and the pole on which the power 
> box is mounted, and there was no change. ... So, that wire has been 
> firmly re-connected again.
>
> After all, I'm getting ready to retire, not to become an SK!
>
> Tom Behler: Kb8TYJ
>
>
> -----Original Message-----
> From: For blind ham radio operators 
> [mailto:[log in to unmask]]
> On Behalf Of Steve Forst
> Sent: Sunday, February 21, 2016 1:11 PM
> To: [log in to unmask]
> Subject: Re: RFI Update
>
> Tom,
>
> I'm no electrician, but I think the NEC (National Electric Code)
> mandates that   these rods  be bonded together.
>
> Mess up the RF ground and you may or may not have RFI problems.   Mess
> up the AC ground and your wife/widow will be disposing of your gear.
> I'll make an offer on the amp.
>
>
> Just kind of kidding, but think  things through as you monkey with 
> this stuff, especially  if dealing with the outside power ground.
> Good luck in your tinkering, Steve KW3A
>
>
>
>
>
>
>
>
>
> On 2/21/2016 12:06 PM, Tom Behler wrote:
>> Bob or anyone:
>>
>> I wonder what would happen if I disconnected the ground wire between 
>> the ground rod below my shack, and the ground on the electrical power 
>> box.  It is only a short wire, and I can't believe it should make a 
>> difference, but with this sort of thing, you never know, I guess.
>>
>> I've tried some snap-on RF chokes on the output of my TS590, and the
> common
>> port of my Alpha Delta antenna switch, but so far nothing has changed 
>> significantly.
>>
>> Will keep at it here.
>>
>> Tom Behler: KB8TYJ
>>
>>
>> -----Original Message-----
>> From: For blind ham radio operators 
>> [mailto:[log in to unmask]]
>> On Behalf Of Bob Tinney
>> Sent: Sunday, February 21, 2016 12:15 AM
>> To: [log in to unmask]
>> Subject: Re: RFI Update
>>
>> Tom,
>>
>> That means that RF is coming down your coax lines from your antennas, 
>> and that you have a long ground wire which will radiate that Rf.  You 
>> also
> could
>> be having a ground loop between your electrical and RF ground rod.
>>
>> I would try a coax RF choke at each antenna and or connecting a 
>> second ground wire that is a few feet longer which should lower your 
>> RF ground reactance.
>>
>> Bob, K8LR, [log in to unmask]
>>