Re: [IRCA] Cable connectors

[<rfoxwor1@xxxxxxxxxxxxxxx>]

---- Russ Edmunds <wb2bjh@xxxxxxxxx> wrote: 
> I seem to recall that 'back in the day', Gordon Nelson was concerned about keeping the feedlines from his loops as short as practical for the application. Realizing that his recommended feedline was car radio cable with the original center conductor removed and replaced by insulated #22 or so ( with the braid soldered together on each line about every foot ) I wonder if it is in fact possible to get what you're aiming for. 
> 
> I don't recall the specific electrical and/or magnetic characteristics of that type of feedline vs. coax, but perhaps that too has some relevance here in that he eliminated using coax for a specific reason, which alas I also don't recall.
> 
> Russ Edmunds

The only thing I can think of would be to lower the capacitance (per foot) of
the cable itself. This is the reason that type of cable was spec'ed for
car radios which had a compression trimmer that had to be peaked (at 1400 kc)
for the specific car whip being used. Now that I think about it, real commercial
grade coax contains spacers to keep the center conductor equidistant from
all parts of the shield. Running in your own #22 wire for the center conductor
after removing the original wire (I guess it was too flimsy) would lead to the
wire being adjacent to the shield almost everywhere. Not sure how important
that would be. I did that once, 40 years ago, but forget the details.

- Bob



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