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Hi gang,

I've been working on a portable version of Martin Hedman's (SM0DTK)
3-element wire beam: The Mini Horse Antenna, QST Mar. 2010.

Although it needs some optimization, Dave (W6VYK) and I got it launched
and operational last Sunday.

Qs with:

KH6LC Keaau, Hi. big antenna farm and station setup for remote
control, check QRZ for details.

AH6NF Honolulu, Hi. Beverly

SK9HQ Karlsborg, Sweden This is a big contest station.

SN0HQ Poland Another big contest station.

The mast was of particular interest to both of us. I've been wondering
how high a mast one could make by stacking surplus 4' fiberglass pole
sections.

Our technique was to plant 2 guy lines roughly 100 degrees apart, then
while keeping the mast leaning evenly against the guys, add sections
from the bottom.

A third guy was tensioned against the other two once we had the altitude
we wanted. We quite easily managed to get the beam up 36 feet. It was a
windless afternoon. Any wind at all would require a second set of guys.

The beam itself is light and could be suspended from a horizontal line
stretched between 2 tall trees. That combination would reduce the weight
enough to make the antenna portable.

I've uploaded photos of the adventure to the photo section.

73, Murf kh6eam

Congratulations!!! That looks great!

I like the hub assembly - with the free rotating
mechanism.
Do you keep the spreaders in position by the antenna wire tension, or do you have additional spreader rope to maintain the angles?

Propagation was really favorable to EU during the IARU on 20m.
I managed to work UK with 750mW and sloper on Sat night.
Also the other HQ stations you mentioned were all booming in here.

Did you use an antenna tuner inline?

Also would be curious to know about any performance tests results.
Maybe some f/b and f/s - wspr?

The crappie poles work wonders. I have a few 20ft ones..but need to get myself the 16ft models...(for 20m dimensions)




--- In QRPops@..., "Neil" <neil@> wrote:

Hi gang,

I've been working on a portable version of Martin Hedman's (SM0DTK)
3-element wire beam: The Mini Horse Antenna, QST Mar. 2010.

Although it needs some optimization, Dave (W6VYK) and I got it launched
and operational last Sunday.

Qs with:

KH6LC Keaau, Hi. big antenna farm and station setup for remote
control, check QRZ for details.

AH6NF Honolulu, Hi. Beverly

SK9HQ Karlsborg, Sweden This is a big contest station.

SN0HQ Poland Another big contest station.

The mast was of particular interest to both of us. I've been wondering
how high a mast one could make by stacking surplus 4' fiberglass pole
sections.

Our technique was to plant 2 guy lines roughly 100 degrees apart, then
while keeping the mast leaning evenly against the guys, add sections
from the bottom.

A third guy was tensioned against the other two once we had the altitude
we wanted. We quite easily managed to get the beam up 36 feet. It was a
windless afternoon. Any wind at all would require a second set of guys.

The beam itself is light and could be suspended from a horizontal line
stretched between 2 tall trees. That combination would reduce the weight
enough to make the antenna portable.

I've uploaded photos of the adventure to the photo section.

73, Murf kh6eam

Here's a source for the 17' poles...about what I paid for my from Cabelas a few years ago.

<>

Southern Dave
w6dlf


--- In QRPops@..., "capesafari" <ft7800@> wrote:

Congratulations!!! That looks great!

I like the hub assembly - with the free rotating
mechanism.
Do you keep the spreaders in position by the antenna wire tension, or do you have additional spreader rope to maintain the angles?

Propagation was really favorable to EU during the IARU on 20m.
I managed to work UK with 750mW and sloper on Sat night.
Also the other HQ stations you mentioned were all booming in here.

Did you use an antenna tuner inline?

Also would be curious to know about any performance tests results.
Maybe some f/b and f/s - wspr?

The crappie poles work wonders. I have a few 20ft ones..but need to get myself the 16ft models...(for 20m dimensions)




--- In QRPops@..., "Neil" <neil@> wrote:

Hi gang,

I've been working on a portable version of Martin Hedman's (SM0DTK)
3-element wire beam: The Mini Horse Antenna, QST Mar. 2010.

Although it needs some optimization, Dave (W6VYK) and I got it launched
and operational last Sunday.

Qs with:

KH6LC Keaau, Hi. big antenna farm and station setup for remote
control, check QRZ for details.

AH6NF Honolulu, Hi. Beverly

SK9HQ Karlsborg, Sweden This is a big contest station.

SN0HQ Poland Another big contest station.

The mast was of particular interest to both of us. I've been wondering
how high a mast one could make by stacking surplus 4' fiberglass pole
sections.

Our technique was to plant 2 guy lines roughly 100 degrees apart, then
while keeping the mast leaning evenly against the guys, add sections
from the bottom.

A third guy was tensioned against the other two once we had the altitude
we wanted. We quite easily managed to get the beam up 36 feet. It was a
windless afternoon. Any wind at all would require a second set of guys.

The beam itself is light and could be suspended from a horizontal line
stretched between 2 tall trees. That combination would reduce the weight
enough to make the antenna portable.

I've uploaded photos of the adventure to the photo section.

73, Murf kh6eam