[Lowfer] Argo and Sound Cards

[W5JGV]

> First, Ralph's 9-18 post took me for another look at his
> well annotated
> site, esp. that for his Part 5 LF station, WC2XSR/13, found
> at "166.500
> KC." Boy, does that shout "nostalgia"! And fine on that 70s
> steel tower
> reclamation, Ralph, but "6.5 inch" dia. guy line?? Shifting
> to metric
> may be sufficient, even if it then sits on the lite side on
> the safety
> margin.

Whoops!  What a difference a missing "-" makes!  It reads: "The tower
is 70 feet tall, and was guyed by 6 1/2 inch thick steel guy lines."
It SHOULD read: "The tower is 70 feet tall, and was guyed by 6 - 1/2
inch thick steel guy lines."  I'll fix that ASAP.

<snip>

> One thing I'd add to Ralph's account of sound card use is the use of
> 600/600 ohm audio xfmr to isolate the pc from the rx. I feel it's as
> basic as a AC surge protector and lightning protection measures, for
> abating noise transfer.

Most definitely!!  Actually, I do have an audio isolation xfmr in the
audio path.  I guess I sort of missed adding that, since I thought
everyone used an iso xfmr.  My bad!  I also have the computer and TX
on a common power and earth ground, with surge suppressors and UPS.
The computer case, the RX case and the RF coax shield are all common
at one ground point inside the shack. The RF feedline coax is grounded
to the earth where it enters the shack, and outside at the tower as
well.

73,

Ralph   W5JGV - WC2XSR/13

>>> NOTE: <<<
All my web files which were located at:
http://home.att.net/~ralph.hartwell
http://home.att.net/~ralph.hartwell/shmrg/index.htm
http://home.att.net/~ralph.hartwell/rifeindx.htm
have been moved to:

http://www.emachine.com

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