Anyone ever use any Mil-Spec RG-142 ?

[Wardsweb]

I've got some Mil-Spec Plenum RG142, 100% braided shield and solid center conductor. Both are silver over copper. Would this stuff make good interconnects?

 

[jam]

No.

 

[Einric]

Electrical skin effect says that the coax would perform similar to solid silver cable. The 98% shield rating would say that it would keep your sensitive input signals well shielded.

Matter of fact, I'm gonna use it for my TDA7294 BTL input cabling.

 

[marce]

Skin effect at audio frequencies? No

 

[SY]

I've got some Mil-Spec Plenum RG142, 100% braided shield and solid center conductor. Both are silver over copper. Would this stuff make good interconnects?

Yes. I picked some up cheap at surplus and used it for interconnect wire in both my hifi rig and in my lab. No particular issues other than it was a bit stiffer than I'd like.

 

[Rodeodave]

Coax cable is very nice. If you run them over very long distances just make sure your preamp can "drive" the somewhat higher capacitance.
I'm using RG316/U and I like it.

Skin effect at audio frequencies? No

Maybe a little? American Wire Gauge table and AWG Electrical Current Load Limits with skin depth frequencies


Oh, and wow, this thread is old.

 

[Einric]

To my knowledge the skin effect is an electrical property that even occurs at 50-60 hz (Mains Power Frequency). It would seem to me that skin effect does play a role, now, when you are talking the lengths needed for intracabling of an amplifier though there will be immeasurable losses. You should only gain a quieter input source from the 98% shielding.

 

[Wardsweb]

Yes. I picked some up cheap at surplus and used it for interconnect wire in both my hifi rig and in my lab. No particular issues other than it was a bit stiffer than I'd like.

Wow talk about resurrecting a dead thread. I think this is a record for one of my posts; almost 7 years.

Anyway, I too found it to be to stiff for my liking. I have had much better results from RG-316 and RG-174.

 

[SY]

Hah, didn't notice that it was a zombie!

 

[Speedskater]

In any case skin-effect at 60 Hz only matters if you are the power company delivering huge amounts of current through wires who's diameter is measured in inches.

 

[marce]

Or very high frequency PCB's where due to skin depth AC resistance varies with frequency, but were way above the audio band.

 

[DF96]

At audio frequencies it will behave more like a screened piece of wire than a coaxial transmission line. It might not even have a well-defined characteristic impedance over the audio band, but fortunately unless it is a few miles long this won't matter.

 

[Einric]

Exactly, as far as using it for shielded inter/intra connects I think it would do well.