[Elecraft] Off Topic RG-174

[Nick-WA5BDU]

Well, that shows that it ought to be OK from the voltage breakdown 
perspective, but consider current carrying capability or self heating of 
that little bitty center conductor too.  It might be limiting.

If you allow it an amp, 50 watts.  Two amps, 200 watts.  At 100 watts of 
course, 1.414 amps.  Probably OK, I'd think.  But I don't know that I'd 
go much higher.

73--Nick, WA5BDU


Don Wilhelm wrote:
> Mike,
>
> My chart in the ARRL Handbook says RG-174 has a dielectric breakdown 
> voltage of 300 volts RMS.  So in theory, it will handle 1800 watts at 
> an SWR = 1.0 (less at higher SWR) - but I would not trust it at much 
> over 25 watts myself.  I like to see a larger safety factor where 
> transmission lines are concerned.  The ohmic losses may be great too, 
> that all depends on the length and the SWR.
>
> 73,
> Don W3FPR