[R-390] Grounds

[Jon Schlegel]

Hi Mike,

What about some type of a broadband RF transformer that isolates for 
DC / 60 Hz between your R-390A and antenna?  I think that should 
break the loop and keep things power line safe.

Regards,
Jon

PS - Please, what is a - Fireman's Friend.  When I Google it, I only 
come up with a variety of Chamois products.



At 02:39 PM 5/28/2010 -0400, FISCH, MICHAEL wrote:
>Hi:
>
>I finally moved the shack to the  basement, pounded an 8' ground rod 
>outside near the shack and I am more-or-less ready to attach a real 
>ground wire and put up a real antenna for my 390a.  Now this has 
>lead to a question.  My AC service entrance is on the other side of 
>the basement.  If I ground the input coax, then I have my receiver 
>grounded at two places (low freq at the service entrance) and RF 
>(but I imagine low freq also) via coax and a ground wire from my 
>ground.  This seems like a ground loop ready to happen.  The pearls 
>had a lot of good info, but I did not seem to find this one.   The 
>ideal I imagine would be to have the shack near the service 
>entrance, or all at RF ground.  I imagine that using a fireman's 
>friend to lift all the AC power grounds and the external ground is 
>not good practice.  Also many of the more practiced people on the 
>net have undoubtedly solved this.
>
>My thanks in advance.  Remember the soldiers that died for our 
>freedom on this Memorial Day.
>
>Mike
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