[TenTec] 75 Ohm twin velocity factor ?

[Dr. Gerald N. Johnson]

On Fri, 2007-01-26 at 23:05 +0000, Steve Hunt wrote:
> Jerry,
> 
> And some days you might learn 2 new things .......
> 
> My calculator doesn't have hyperbolic functions, but I found that Google does! Take a look at:
> 
> http://www.googleguide.com/calculator.html
> 
> Having said that, I can't get it to play with arccosh - perhaps I haven't understood the syntax correctly?
> 
My HP-15C that I keep in the drawer between this keyboard and monitor
does have arccosh. I used to keep XACT on my packet computer, it
emulates an HP11, I think. Runs in DOS. The scientific mode calculator
that came with Fedora Core 3 gets the same answer of 158.0349 ohms Zo
for 1/2" conductors, with 1" center to center spacing.

Google's calculator doesn't seem to know arccosh. Too esoteric, I guess.

I just checked, according to the doc for x11.exe it will do inverse
hyperbolic cosine and seems to have a windoze icon in the package so
maybe it even runs in windoze. The complete XACT directory is about 1/2
MB on my dos packet back up disk. It should shrink if compressed. It seems to
be available on line, google xactcalc.

> 73,
> Steve G3TXQ

-- 
73, Jerry, K0CQ,
All content copyright Dr. Gerald N. Johnson, electrical engineer