[BC] 7/8" vs 1-5/8" line for 2kW FM

Ron Youvan ka4inm at tampabay.rr.com
Fri Nov 26 17:44:24 CST 2010


Edwin Bukont wrote:

>   The question is, given that 7/8" foam line is now out of production,
> how much longer do we think 7/8" air line will be available?

   I didn't know 7/8" foam line is out of production, but foam line is
potentially a big problem.*  Is that a decision that all makers of heliax has made?
I have never ordered foam if the line is over 1/2".  Air line does not have
to be pressurized if there is no leak.  (the first bullet will change that)
   I would use air line and the largest size that can be afforded, it will pay for
the difference in saved electricity sooner or later and it will keep on saving.

* A leak means water gets absorbed into the foam and it can not be removed.

-- 
Ron KA4INM



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