Odd Piece of Coaxial Cable
 

I recently handled an estate sale. Among the SK's posessions was a one-foot
piece of RG-8 or RG-213 which he had carefully modified by cutting away
about 3/16 inch of the jacket and braid all around the circumference of the
cable, near its middle.

I am not sure what use this would be to a ham. Some audio cables are made
up with discontinuous shields for elimination of ground loops but I've not
seen it done for RF.

Ideas?

Odd Piece of Coaxial Cable
 

Sal M. Onella wrote:
I recently handled an estate sale. Among the SK's posessions was a one-foot
piece of RG-8 or RG-213 which he had carefully modified by cutting away
about 3/16 inch of the jacket and braid all around the circumference of the
cable, near its middle.

I am not sure what use this would be to a ham. Some audio cables are made
up with discontinuous shields for elimination of ground loops but I've not
seen it done for RF.

Ideas?

A shielded loop.

--
Jim Pennino

Remove .spam.sux to reply.

Odd Piece of Coaxial Cable
 

wrote in message
...
Sal M. Onella wrote:
I recently handled an estate sale. Among the SK's posessions was a
one-foot
piece of RG-8 or RG-213 which he had carefully modified by cutting away
about 3/16 inch of the jacket and braid all around the circumference of
the
cable, near its middle.

A shielded loop.


Thanks. Good chance that was it.

Odd Piece of Coaxial Cable
 

Take all of the sheath and the shield off and a piece like that could be
used in the making of a gamma match. Partially stripped it could have been
for a piece of test equipment or ???


"Sal M. Onella" wrote in message
...
I recently handled an estate sale. Among the SK's posessions was a
one-foot
piece of RG-8 or RG-213 which he had carefully modified by cutting away
about 3/16 inch of the jacket and braid all around the circumference of
the
cable, near its middle.

I am not sure what use this would be to a ham. Some audio cables are made
up with discontinuous shields for elimination of ground loops but I've not
seen it done for RF.

Ideas?

Odd Piece of Coaxial Cable
 

Sal M. Onella wrote:
Among the SK's posessions was a one-foot
piece of RG-8 or RG-213 which he had carefully modified by cutting away
about 3/16 inch of the jacket and braid all around the circumference of the
cable, near its middle. I am not sure what use this would be to a ham. Ideas?

It's probably a poor-man's slotted line. A needle is
inserted through the center insulation to access the
voltage on the center conductor.
--
73, Cecil http://www.w5dxp.com

Odd Piece of Coaxial Cable
 

Then again, depending on how 'devious' he was, it could have been that
he wanted to leave something that would make people wonder. ;)
- 'Doc

Odd Piece of Coaxial Cable
 

Cecil Moore wrote:
Sal M. Onella wrote:
Among the SK's posessions was a one-foot
piece of RG-8 or RG-213 which he had carefully modified by cutting away
about 3/16 inch of the jacket and braid all around the circumference
of the
cable, near its middle. I am not sure what use this would be to a ham.
Ideas?

It's probably a poor-man's slotted line. A needle is
inserted through the center insulation to access the
voltage on the center conductor.

Sorry, I misunderstood the description. It is probably
part of a loop antenna.
--
73, Cecil http://www.w5dxp.com

Odd Piece of Coaxial Cable
 

Maybe he was starting to strip the outter sheath and shield to make a gamma
match. Or it could be a test gadget he was going to make.....Rollie



"Sal M. Onella" wrote in message
...
I recently handled an estate sale. Among the SK's posessions was a
one-foot
piece of RG-8 or RG-213 which he had carefully modified by cutting away
about 3/16 inch of the jacket and braid all around the circumference of
the
cable, near its middle.

I am not sure what use this would be to a ham. Some audio cables are made
up with discontinuous shields for elimination of ground loops but I've not
seen it done for RF.

Ideas?

Odd Piece of Coaxial Cable
 

Cecil Moore wrote:
Cecil Moore wrote:
Sal M. Onella wrote:
Among the SK's posessions was a one-foot
piece of RG-8 or RG-213 which he had carefully modified by cutting away
about 3/16 inch of the jacket and braid all around the circumference
of the
cable, near its middle. I am not sure what use this would be to a
ham. Ideas?

It's probably a poor-man's slotted line. A needle is
inserted through the center insulation to access the
voltage on the center conductor.

Sorry, I misunderstood the description. It is probably
part of a loop antenna.

What is needed, here, is a Ouija board.
73,
Tom Donaly, KA6RUH

Odd Piece of Coaxial Cable
 

Sal M. Onella wrote:
I recently handled an estate sale. Among the SK's posessions was a one-foot
piece of RG-8 or RG-213 which he had carefully modified by cutting away
about 3/16 inch of the jacket and braid all around the circumference of the
cable, near its middle.

I am not sure what use this would be to a ham. Some audio cables are made
up with discontinuous shields for elimination of ground loops but I've not
seen it done for RF.

Ideas?


All the above have merit-- One other use- in SOME installations, there
is a requirement to do D.C. isolation - Removal ot part of the sheath,
jumpered by a Capacitor (but if that is what this for, the cap would
be in place). And, as to the first comment, such a loop would have been
used as a direction Finder (the space between the broken shields was
the "sense area of the loop, and, if remember right, you "Null" in the
direction that the "loop" is perpendicular to. - Jim NN7K