HELP: Will a TH3-JR HF beam load on 17m?
 

I'm butting up a new tower and I'm deciding between the Hy-Gain TH3JR and
the Butternut HF5B.

My tower is 10' from the lot line, so I'm trying to minimize overhang above
the neighbors house. I can park the beam when not in use, so even if the
turning radius is greater than 12', as long as the 1/2 the boom length is
less than 11', I would not be 'parked' over his home.

So, the butternut and the hygain are both smaller antennae, but I would like
to have the WARC bands as well as the typical 20-15-10 combo.

Anyone have some thoughts on this?

PLEASE REPLY HERE. (as the spam is simply too much.)

Thanks!
Pat,
VE3PMK

How bout the tennadyne log periodic? I believe they have a 5 or 6 element
version that's not too big.

I had a force 12 c3 up for a bit, it was a pretty large antenna but it worked
10-20 and the tuner in me rig even tuned it up on 40 although it didnt work
good on 40. They now make the c3 in a short version which isnt much off the
performance of the regular c3, which is probably similar to a 2 element yagi on
20 and 3 elements on 10 and 15..Good luck.

Steve
kb8viv

How bout the tennadyne log periodic? I believe they have a 5 or 6 element
version that's not too big.

http://www.tennadyne.com/specs&prices.htm

Check it out, never used one but they look promising and they should work
everything between 10-20..

Steve
kb8viv

I have the T6 and I like it very much. It meets all the specifications and
works very well for me. If I was to do it over again, I would get the next
bigger one as the SWR curves are a bit lower and the beam width a bit
sharper. But the T6 will beat the beans out of any small tribander in all
ways except front to back.
Be aware that the minimum height is 40' with something around 65' optimal.
Also Tennadyne almost always have them in stock for rapid shipment unlike
other companies that can make you wait weeks or more for them to ship.

So for one more not very meaningful testimonial, I've worked 276 countries
in 2 years, with 100+ countries on 20, 15, 10m and I'm waiting (hoping) for
cards on 17 and 12m.


--
John Passaneau, W3JXP
Penn State University


"Desmoface" wrote in message
...
How bout the tennadyne log periodic? I believe they have a 5 or 6 element
version that's not too big.

http://www.tennadyne.com/specs&prices.htm

Check it out, never used one but they look promising and they should work
everything between 10-20..

Steve
kb8viv

Dear Pat:
As John has indicated, you will be much more satisfied with a LPDA
than a tri-bander. Tennadyne has an LPDA for all sorts of lots.
However, be sure to ask for the extra sleeve option for the rear
(longest) element. You should use a good truss made of "plastic" rope
to help the boom load (use more rope than what is shipped with their
antenna) - in other words, have a mast that extends more than 1.5 feet
above the boom.
The elements are well designed mechanically, but will not take
really high wind and only about 5 to 7 mm of ice. (With that amount of
ice, the element ends point almost straight down.) I wish that one
could easily blacken Al after assembly so that the sun could help melt
ice.
Try hard to mount at least one wave length high at 20 m. - as John
has noted.
Use a piece of flooded coax to connect to the front of the antenna
that you run back under the boom to a coil on a plastic tube mounted
right across the (insulated) boom to mast clamp (terminated in a coax
connector that you can weatherproof and to which you connect the main
transmission line). Do not put the choke out at the end of the boom.
Let us know what you do.
73 Mac N8TT
--
J. Mc Laughlin - Michigan USA

"John Passaneau" wrote in message
...
I have the T6 and I like it very much. It meets all the specifications
and
works very well for me. If I was to do it over again, I would get the
next
bigger one as the SWR curves are a bit lower and the beam width a bit
sharper. But the T6 will beat the beans out of any small tribander in
all
ways except front to back.
Be aware that the minimum height is 40' with something around 65'
optimal.
Also Tennadyne almost always have them in stock for rapid shipment
unlike
other companies that can make you wait weeks or more for them to ship.

So for one more not very meaningful testimonial, I've worked 276
countries
in 2 years, with 100+ countries on 20, 15, 10m and I'm waiting
(hoping) for
cards on 17 and 12m.


--
John Passaneau, W3JXP
Penn State University