https://www.dxengineering.com/search/product-line/dx-engineering-160-meter-thunderbolt-vertical-antennas?autoview=SKU&keyword=160%20vertical&sortby=BestKeywordMatch&sortorder=Ascending
On 12/20/2016 10:24 AM, Petronel Postolache wrote:
I can't find the Vertical from DX Engineering. If you can send me a
link it will be great.
One solution might be top hat vertical, similar with
http://dl2kq.de/ant/3-1.htm . Not sure how much power is lost in the
matching unit L1, C1.
I would love a Waller Flag too. Imposible to buy one from here (too
expensive) but I might wanna try build one. Preamp will be the biggest
problem.
Petronel
YO8SEP / YP8W
On Mon, Dec 19, 2016 at 9:30 PM, W0MU Mike Fatchett <w0mu@w0mu.com
<mailto:w0mu@w0mu.com>> wrote:
Check out DX Engineering. They sell a vertical that uses 3 top
hat wires. Sloping back down is ok. For 80/160 you need to stop
the 80m energy with a coil/trap My 80 uses a very fast taper and
the top is only 3/8 inch or less so It cannot support a coil or t
wires. I probably should have planned that out better. I was
also going to try to phase two 80 elements over time but that will
not happen any time soon.
With all the metal in the yard the AY loop may not work very
well. Waller Flag on the roof maybe. I would love one.
W0MU
On 12/19/2016 12:24 PM, Petronel Postolache wrote:
I can try to put a 21-22m (68-70 foot) telescopic aluminium pole,
made from pipes 2" to 1" diameter.
It will be a bit too long for 1/4 on 80m. I can put a T top hat
or run an InvL, but probably need to slope it from 70 foot to
about 40 foot. What will be better ? and will I be able to
match/use the antenna on 80m also ?
About K9AY, I understood that the loop is influenced by close
metal objects, and the property is full of wire fences, vineyard
rows and other "metal" structures. That's why i was thinking
about using some flag/loop at 10 feet or more above ground.
73, Petronel
YO8SEP
160 and 80 will be difficult. Can you get another vertical up
about 60 feet? You can top load that with a trap for 80 and have
"t" wires at the top that also act as guy wires. You can also
bottom load for 160 and maybe that will be good enough for you.
Radials whatever you can do will help.An Inverted L with about
50ft of vertical will work ok....If you can keep the horizontal
end up in the air around the same height or more. It doesn't
sound like you have any tall trees to work with.For receiving I
have been very impressed with a K9AP loop. 25 ft up and about 15
feet out at the corners. It does not take up much space and you
can reverse the direction easily with a relay. A flag or pennant
will work too. You can never have enough rcv or xmit antenna! HI!
Welcome to the club!
W0MU
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