Gerry:
I don't have any real way to move the power supply, due to limited space and
my current equipment configuration, and I've checked all ground connections
to be sure they are nice and tight.
So, I think I'm ok there.
But I'm going to methodically tackle this thing this week-end, and see what
I can come up with as a solution.
73 from Tom Behler: KB8TYJ
----- Original Message -----
From: "Gerry Leary" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, February 10, 2011 11:04 PM
Subject: Re: grounding solution for 20 m
Hmmm, Well I would check the connection at the ground, and maybe try moving
the Power Supply temporarily to see if that helps.
----- Original Message -----
From: "tom behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, February 09, 2011 5:46 PM
Subject: Re: grounding solution for 20 m
> Gerry:
>
> All of my grounds go to a common ground lug on my window ffeed through
> panel, and that ground lug is coupled to an outside connection where my
> ground wire goes to a ground rod.
>
> I have every reason to suspect that the ground is still working, because I
> get very little RFI anywhere, as compared to what I used to get in the
> Louisville rental house where I didn't have a ground.
>
> 73 from Tom Behler: KB8TYJ
>
> ----- Original Message -----
> From: "Gerry Leary" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, February 09, 2011 9:26 AM
> Subject: Re: grounding solution for 20 m
>
>
> Hey Tom,
>
> A couple of other ideas. How are all of your grounds connected together?
> And is the connection at the ground side outside still good? Are all of
> the
> ground connections on the equipment tight? Could the ground leads be
> moved
> away from other wires? If you have a keyer maybe move its leads around.
> Gerry
> ----- Original Message -----
> From: "tom behler" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, February 08, 2011 7:55 PM
> Subject: Re: grounding solution for 20 m
>
>
>> Sounds great, Gary. ... Thanks!
>>
>> 73 from Tom Behler: KB8TYJ
>>
>> ----- Original Message -----
>> From: "Gary Lee" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Tuesday, February 08, 2011 8:29 PM
>> Subject: Re: grounding solution for 20 m
>>
>>
>> yep. Just make sure they are not touchable.
>>
>> I suspect that it is your power supply shutting down. I have had the =
>> same thing.
>>
>> The counterpoise will help with that. chokes as well, but I would run =
>> the wire anyway.
>> Just run it around your baseboard, and maybe stuff the ends into a =
>> tennis ball or some such.
>>
>> On Feb 8, 2011, at 6:43 PM, tom behler wrote:
>>
>>> Gary:
>>>=20
>>> Thanks for the careful calculations.
>>>=20
>>> My question is:
>>>=20
>>> What do I do with the other ends of the wires?
>>>=20
>>> Just let them hang somewhere, being sure they are out of range of =
>> being=20
>>> touched by someone?
>>>=20
>>> 73 from Tom Behler: KB8TYJ
>>>=20
>>> ----- Original Message -----=20
>>> From: "Gary Lee" <[log in to unmask]>
>>> To: "tom behler" <[log in to unmask]>
>>> Sent: Tuesday, February 08, 2011 9:34 AM
>>> Subject: grounding solution for 20 m
>>>=20
>>>=20
>>> Tom:
>>>=20
>>> All you need to do is cut a 1/4 wave length of wire, preferrably =
>> something
>>> fairly heavy for the freq of interest.
>>> Remember that insulated wire has a velocity factor of around 95%.
>>> so, for the net freq, 300/14.258 =3D 21.041.
>>>=20
>>> This is in meters, so * 39.37 inches per meter =3D 828.377. Now * =
>> velocity
>>> factor 95% =3D 786.96 inches / 12 inch per foot =3D 65.58 / 4 =3D =
>> 16.395.
>>>=20
>>> Now take the decimal portion and multiply by 12 =3D 4.75 near enough.
>>>=20
>>> so a length of wire about 16 feet 5 inches will be a resonant quarter =
>> wave
>>> on the blind hamns net frequency.
>>> Tie this to your ground on the rig and another for your amp.
>>> Be sure to insolate the far ends well.
>>>=20
>>>=20
>>> Hope this helps.
>>
>
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