[Lowfer] 8 ft. loop Lewis

Mitch Powell [email protected]
Tue, 15 Oct 2002 20:45:43 -0400


> 
> I am thinking about putting up a 8' square shielded loop for receive, Using
> RG 8/U. How much Cap. would i need to series resonate it ?

Lewis:
Looking at the RJELOOP program of G4FGQ - and entering the values you have
given show that for a square loop, made of RG8U, and sides of 8 ft, you
would require  0.071 uFd for resonance at 185 kHz.

For my "just-installed" 100 ft loop made of RG58U, I needed 0.0197 uFd for
resonance at 185 kHz, and I was within 100 pf of the value that the G4FGQ
program calculated ! !

My first loop was a 6 ft diameter "1/2 " hardline coax.... but open at the
top shield and ............ well see the article by Mitchell Lee on
http://technology.fanshawec.on.ca/tele410
at the bottom of the page is the article.

Hope this helps.

73
Mitch VE3OT