[aprssig] Cat5 jumpers for mic connections
Gerry Creager N5JXS
gerry.creager at tamu.edu
Thu Apr 14 07:56:44 CDT 2005
We use Cat5 extensively on our serial connections without problems in my
Lab. I've used it, as well, for mic/control head extension on a Yaesu
FT-8500 without problems.
Using the flat cables ("Silk") is much more likely to fail to prevent
cross-talk in my experience, in ethernet, serial operations and probably
audio. While you've got a bit of an impedence mismatch for audio, you
have a shielding effect from the twist in UTP.
Jason Winningham wrote:
> On Apr 13, 2005, at 9:23 PM, <scott at opentrac.org> wrote:
>> For radios using an RJ-45 jack for the mic connector, is there any
>> to using shielded twisted pair when connecting a tracker?
> I use RJ45 to DB-x connectors for my server connections, and some
> recommend _not_ using twisted pair for RS232 because it can introduce
> crosstalk that untwisted cables wouldn't. I have no idea if this is
> true for RS232 or extending a mic/control head.
> For 3', I don't think it would matter.
> I used a flat 8 conductor phone cable to extend my D700 mic cable.
> I think I saw some STP at www.bgmicro.com once upon a time. I can't
> remember the length.
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