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Ralph Mowery

In article ,
says...

I think RG cable is more than adequate for audio use, maybe "too good"!
It may not be as flexible as you would like.

For that short a distance, and for speech-quality audio, I agree on
both points. The flexibility of the cable may be an issue, although
since it's a desk microphone that may be less of a problem.

If you do want to optimize... professional microphone cables are often
designed with low capacitance per foot (to minimize the degree to
which the cable's shunt capacitance loads down the mic element and
affects the frequency response) and low amounts of triboelectric
effect (so that bending the cable doesn't generated voltages inside
the insulation which are then transferred to the conductors - this can
cause crackling or other noises in the audio).

Most of the big cable manufacturers (Belden, Mogami, etc.) make cable
of this sort. Markertek sells it, but only in bulk quantities :-(

Ralph, if you want to experiment... I have a whole bunch of fancy
mil-spec cable sitting in my garage from a previous project / sideline
business... it's stuff like Belden 83318E. I've got some fairly thin
one- and two-conductor (plus braided shield) that might work for
you... it's not as flexible as rubber- or PFC-insulated of the same
diameter but is definitely more flexible than RG-58 or RG-8x. I've
used it for line-level audio wiring in my stereo setup, among other
things. Email me directly, send me a mailing address, and I'll post
you a long enough piece to try with your microphone.

Thanks for the offer on the cable. I don't think it is worth it to do
any experimenting with. This is for a D104 Crystal mic that is going
into an old Johnson Viking 2 transmitter . The audio quality on them is
not all that great from what I understand. That transmitter is set up
for just a center conductor and outer shield. An audio plug similar to
a pl259 with the center pin just flush with the connector. Forgot what
they are called.

I did not think it would matter in this case what kind of cable I used
if it did not pick up AC hum or RF as it is only going to be 3 or 4 feet
long. Just wanted to run it by some that might have had tried it and
ran into an unknown problem.

I have several kinds of small rg coax around. Where I am going to use
the mic , the wire does not have to be very flexable.

Now If I really wanted the best, I would get one of those $ 100 AC cords
that is oxygen free, some Monster mic cable and suck out all the solder
connections in the rig and re do it with some of the Wester Electric
solder..