= = = "Dale Parfitt" wrote in message
= = = .. .
"Kees" wrote in message
...
Hi

Well, the coax receives it on the outer side.
It would travel up to the balun and goes from there into
the coax inside back to the receiver.
That's why I put it up there.

Kees


If you really want to keep house noise from entering the antenna,
there should be an isolation transformer at the RX end. Your choke
at the antenna end will indeed reduce conducted noise from getting
into the antenna but not radiated noise. Think of the outer shield
of the coax as an antenna in close proximity to the T2FD. Perhaps
running the coax at right angles to the T2FD would help some if
an isolation transformer is not used in the shack.

Dale W4OP

DP / W4OP,

Are you referring to a 1:1 Matching Transformer that is used as
"Feed-Line-Isolator" at the 'junction' of the Receiver and Coax
Cable that feeds the T2FD Antenna.

Wellbrook "Low Noise Antenna" 'design concept' using two
components they manufactu the Universal Magnetic Balun (UMB)
and the Antenna Feed Isolator (Feed-Line-Isolator).

GoTo= http://www.wellbrook.uk.com/longwire.html

FWIW: This webpage has two Drawings/Diagrams "The Wrong Way"
and "The Correct Way" plus a brief description of the 'Whys'
and 'Hows' of this "Low Noise Antenna" design concept.

NOTE: These are labled as "Longwire" Antenna Baluns, but
in reality they are mostly used on the more common
"Random Wire" Antennas that the majority of SWL are able to
build and use in their backyards or outside/inside the house.

iane ~ RHF
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