[SixClub] 6 meter vertical
Barry Bogart
[email protected]
Wed, 3 Mar 2004 17:20:03 -0800 (PST)
Good point. Maybe I WAS overshooting him. I'll have to
keep that in mind. I usually use a dipole on the
mountains anyway.
73, Barry
VE7VIE/KD7IGX
--- Christopher Boone <[email protected]> wrote:
> You WERE at 4000ft....a vertical would have seen
> OVER him if he was at
> say 200ft AGL or so..Remember a vertical looks like
> a squashed donut or
> umbrella in the air....if you can see the top, then
> you can
> communicate..if the top is hidden by the "umbrella
> cone" or the other
> station is in a null (yes verticals have NULLS!) of
> the doughut, then
> rolling to Horiz would make a BIG difference...20db
> LESS of a strong
> signal is better than 40-50db null even with same
> pol...
>
> HOWEVER, your case is unique! You were at 3000ft or
> so...what you found
> is what broadcasters have known about for
> years...and thats why they use
> "NULL FILL" in antennas to throw more signal DOWN
> toward or even BELOW
> the horizon when operating from a HIGH
> elevation...Its not unusual.
>
> NOW if you and the other station were at the SAME
> HEIGHT, then things
> would have been normal....
>
> Chris
> WB5ITT
>
> Barry Bogart wrote:
>
> > I found this out when I worked the September VHF
> > contest the same weekend I bought my Ranger 5054
> in
> > Seattle,. I was up on Snoqualamie Pass - must be
> 3000'
> > or so. I connected the rig to my battery and a
> > hamstick I had. But I could barely work anyone -
> even
> > the guys in Seattle less than 50 miles away! I
> later
> > realized it was because my hamstick was VERTICAL
> and I
> > was using USB. I have the 25-watt Ranger BTW.
> >
> > However, last weekend I was on a mountaintop
> trying a
> > sched with a friend out in the Valley East of
> > Vancouver BC. I didn't hear him, but I did work a
> guy
> > in Saltspring Island, about 50 miles away. This
> guy
> > was on an 817 with a Miracle Whip, vertical. I was
> > using a Tokyo Hypower HT - 2w, with a whip but I
> held
> > mine horizontal for USB. After he mentioned his
> > antenna, I asked if it was vertical. He said yes,
> so I
> > swung mine up vertical as well. The result was a
> very
> > significant DROP in his sig level - maybe 10db. I
> > swung it back horizontal and he came right back
> 5/9.
> > Any ideas why? Over only 50 miles, line of sight
> (I
> > was at 4000'), cross-polarization should have
> kiiled
> > us. Instead it was better.
> >
> > Anyone have an explanation?
> >
> > 73, Barry
> > VE7VIE/KD7IGX
>
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