On Tue, 02 Sep 1997 20:22:12 EDT firstname.lastname@example.org (Fred Hopengarten) writes:
>On Tue, 2 Sep 1997 16:57:37 -0400 (EDT) SFrakes@aol.com writes:
>>Sept. 2, 1997
>>Is there anything wrong with using two pieces of 7/8" Heliax, that
>has been spliced together?
> You neglect to tell us about the splice, and the frequencies
>of use. Let's assume that it is a connectorized splice. You'll never
>see it (electronically), or care about it, at frequencioes below 30
>MHz. At frequencies under 7 MHz, you could use a VE1ZZ splice and
>still not notice it.
VE1ZZ brings the two pieces of hardline vertical
>and ties the shields together with a stainless steel hose clamp. The
>two center conductors are soldered with a small copper jumper. The
>coax is weather-protected by putting them in an inverted two liter
I used this technique on my first hardline run at the "new" QTH 17 years
ago. It has outlasted almost all of my homebrew hardline connectors.
That told me something! I now use that technique for all my hardline to
RG-213 or RG-59 cables (with ground lugs soldered to the braid). I use
small plastic bottles wrapped with Scotch 33 to prevent uV deterioration
and to hold the bottle in place. This works on all HF bands.
I have made home brew hardline splices using a small copper tube
soldered over the center conductors for approximately 1/2 inch, then
wrapped with scotch 33, and an 8 inch sleeve of the next size aluminum
tubing slotted at both ends, wrapped with Scotch 33, and hose clamped.
I have two such splices which continue to function several years after
repairing lawnmower induced damage.
de Tom N4KG
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Administrative requests: towertalk-REQUEST@contesting.com