[Antennas] Tower Installation, cont'd

Eric Jones ejones at hiwaay.net
Thu Oct 1 15:18:13 EDT 2009


de N4TGC Eric

I thot it was "bald" face lie ... apparently, the ARRL did finally buy stock 
in a window-line company, as they started promoting it in the last few 
years, in their Antenna Handbooks.  I suspect their rational for coax was 
the same reason they dropped link-coupling in the 50's and went solely to 
PI-net output designs: link coupling permits working on harmonics whether 
you intended to or not.  PI-nets and coax are inherently narrow-band.

I tried using coax on a drooping doublet, and it tuned so sharply as to be 
virtually useless (who can operate on 7.14 mc forever?!)  With the same 
wires fed with 450 ohm window-line, I can work four bands across the board, 
using an MFJ-941D.

If the ARRL would pit us against each other instead of lying to us all, they 
could achieve the same results without making so many enemies: when they 
stole bandwidth to create Tech, Advanced, and Extra Class Hams, the apparent 
intention was to displace the overload of Old Farts who were clogging up the 
bands. All they'd needed to do was tell us that's what they were doing, and 
naturally, the OF's would point the finger (guess which one) at each other, 
none believing it was them being the intended target ...

When they deign to get the old 3 - 4 mc 'boat' band for our use, for which 
their sponsors can sell virtually no new equipment, then I'll re-join 
gladly.
    e 



More information about the Antennas mailing list