Thinking Buddipole in the future

Corey

OverCamping Specialist
I have seen these before for DX work, and I think it would be fun to take one on a camping trip to the mountains.
Been watching some of their videos this morning.
http://www.youtube.com/user/buddipole

http://www.buddipole.com/

I kind of like the mini one as it has 4 11" poles that equal the 2 22" poles of the regular one, but the mini takes up less space since it breaks down more.
Not sure if the mini one though has a tripod stand, and that would be a must to have, unless I was near sand like they show for the mini in this video.


Those of you who have one, do you like it?
I also wonder if I would just run the coax plug from the Buddipole to the duplexor that feeds to antenna inputs on my Yaesu 857D radio.
 

1911

Expedition Leader
Those of you who have one, do you like it?

I like mine quite well, though like anything it has it's pluses and minuses. The cool thing about the Buddipole is that it's like the Erector Set (showing my age here) or Lego of antennas, you can build almost anything you want with enough pieces, even VHF beams/Yagis. For a truly portable antenna that never gets very high off the ground, the performance is impressive.

Not to blather on too long, here are my pros and cons for the Buddipole:

PROS:

Flexibility. Basic kit (either Buddipole or Buddistick) has enough pieces to make an antenna from 2 to 40 Meters and everything in between. With a few extra pieces, you can get 80 Meters, 160 Meters, and make some beams for higher frequencies too.

Compact size. I was astounded at how small of a package my Buddipole Deluxe kit plus some extra arms and whips will pack into. It came with (and all fits in) a heavy-duty padded nylon bag 24" L x 7.5" W x 4" H, including the tripod, mast, and everything! About the size of a small-ish tent (packed).

Quality of construction. The pieces are all high-quality and sturdy. Yes, it's possible to break the whips if you don't add ballast to the base of the tripod or guy it in a wind, but otherwise it would give years of service. When I'm home, I leave mine set up and outside all the time, with no noticeable wear or effect.

Community support and customer service. Buddipole is a family company and they treat you like one of the family. Plus (a big one), there is an outstanding Yahoo Groups forum with an amazing amount of free and courteous technical help, plans, and tips from extremely-knowledgeable users, and the Drummond family (owners) are heavily involved and supportive too.

Education. I have learned so much about antenna theory and design considerations, playing with various configurations of mine. It's not difficult to try three or four different configurations on the same band (wavelength) and see what advantages or disadvantages each one may have on tuning and performance.

Fun, especially if you like to tinker and experiment. The possible combinations and configurations are almost endless.

CONS:

You have to spend a little time tuning every configuration you try. Even when using someone else's tried-and-true "cook book" parameters, yours will be different depending on where you set-up and how close you are to buildings, the ground, etc. Even if it works perfectly at home, it may (probably will) be different when you set-up at camp. To get really good broad-band SWR's requires a fair amount of trial and error. A good antenna analyzer really helps but is not strictly necessary.

Height. A dipole really needs to be 1/4-wavelength above the ground for maximum effectiveness, which you can rarely if ever achieve. Even verticals and beams will do better the higher you can get them, but the standard mast is only 8' high. Works fine in unobstructed areas like a mountain top or open beach, but loses efficiency if there is any man-made clutter around like buildings, vehicles, etc.

Learning curve. Yes, you can get on the air fairly quickly, but it takes a while and some experimentation and experience to figure out what works best where. This is the other side of the coin to "Education" in the "Pros" list above.

Time. An adjunct to the first "con" of tuning. Changing bands isn't instant and requires tuning and fiddling again, though if you get several sets of coil clips and leave them on the coil(s) for each different band setting then you could move back and forth more quickly once you've tuned all the bands you want to work initially (for your location). But it's not at all like a screwdriver antenna where you just push a button to change bands or a multi-band antenna that is resonant on more than one band.

Power limitation. I don't remember what maximum Wattage the BP will handle, but it's made for "barefoot" mobile rigs of 100-200 Watts or less, not amplified rigs.

That's about it. It's a fine system for what it does, as long as you're not expecting a plug 'n play antenna and you are willing to experiment and learn. I've tried all different kinds of horizontal, 45-degree, "L"-shaped, and vertical dipoles, and simple verticals on 17, 20, and 40 Meters, and had some success with them all but had the best success with the vertical dipole and the plain (single) vertical in the places I've operated. I'm using plain verticals almost exclusively now because they are way faster to set-up and tune, and require fewer parts to make and carry.

If you would be content to only work 10 through 20 Meters, then I would suggest looking at the TransWorld TW2010L Backpacker Antenna http://transworldantennas.com/ which never requires tuning and fiddling and by it's design (an "H"-design dipole) does not need to be high above the ground for DX work. Owners report excellent results, and the "Backpacker" model is easily transportable in a 4WD truck, though not near as small or light as a Buddipole. I am thinking of buying one of these myself, mostly for the ease of changing bands without tuning and the DX performance. But I would still keep my BP to work 40 and 6 Meters, and the possibility of working 80 and 160 Meters as well.


I also wonder if I would just run the coax plug from the Buddipole to the duplexor that feeds to antenna inputs on my Yaesu 857D radio.

Yes.
 

Corey

OverCamping Specialist
Thanks for all that info, it helps!
I would be using it just for the technical bands I can get on after I get my license.
Who knows, I might go for the general not to long after.
Still reading the technical book.
I get very burnt out from my job, so studying two books right now would be kind of hard :D

I like that other antenna too you listed, will have to check into that too.
I imagine I would mainly be in 144 MHz (two meters correct?) and maybe some lower.

What I would like to do is see if I can contact anyone from here next summer while on my week long vacation camping in the mountains, that would be cool, but more than likely it will not be on two meters if I really want to get out?

Be curious to see how far the ATAS 120a gets out too when in the mountains.
 

1911

Expedition Leader
I imagine I would mainly be in 144 MHz (two meters correct?) and maybe some lower.

What I would like to do is see if I can contact anyone from here next summer while on my week long vacation camping in the mountains, that would be cool, but more than likely it will not be on two meters if I really want to get out?

Be curious to see how far the ATAS 120a gets out too when in the mountains.

Yes, 144 MHz is the 2 Meters band.

With your Technician license, you will have CW (Morse code) privileges on 15, 40, and 80 Meters, but not Voice. You will have Voice privileges on a little bit of the 10 Meters band and on all Voice frequencies of the 6 Meters, 2 Meters, 1.25 Meters, 70 cm, 33 cm, and 23 cm bands. So, as far as your radio, antenna, and license goes, you would want to try 6 Meters and 10 Meters for distance. 6 Meters would probably be your best bet, since 10M is only open and propagating during daytime sunspot highs. 2 Meters can go 50 miles or more in good conditions, but is not really a DX band since it is line-of-sight and doesn't skip well.

Once you get your General ticket, the whole world opens up and you get voice privileges on all of 10 Meters, 12 Meters, 17 Meters, and 160 Meters and and on half or more of 15 Meters, 20 Meters, 40 Meters, and 80 Meters. Of course, if you get your Extra ticket then you have all privileges allowed on every band.
 

xtatik

Explorer
A dipole really needs to be 1/4-wavelength above the ground for maximum effectiveness, which you can rarely if ever achieve. Even verticals and beams will do better the higher you can get them, but the standard mast is only 8' high. Works fine in unobstructed areas like a mountain top or open beach, but loses efficiency if there is any man-made clutter around like buildings, vehicles, etc.
Actually, this my problem with the Buddipole. A half-wave dipole begins to work properly at 1/2 wave above ground (whether or not it's trapped as the BP is) and only begins to work properly above 1/2 wave....not 1/4 wave. Between half and full wave a 1/2 wave dipole begins to leave its own ground reflection and resultant ground losses. At approximately full-wave height additional performance gains are negligible. At 1/4 wave a dipole is a cloud warmer and suffers huge losses. To become effective on say 20 meters... a Buddipole would have to be mounted about 32-34 feet above conductive ground. This would require a larger push-up pole than comes in any of the BP kits or, ........some rope and a tree. With rope and a tree a person could rig a full half-wave sized and uncompromised (no traps) dipole that would be much more effective. Keep in mind, this example is for just 20 meters. Getting it mounted properly for 30, 40, 80, 160 meters? Fuggettaboutit.

And so, that is why I use a homebrew vertical that will telescope between 15 and 40 meters that includes a full ground radial set (forty at about 34 feet long) it takes about 20 minutes to set up.....anywhere.
Or, I use one of the TW2010's and have been very pleased with its performance, although it is also a compromise from a full-sized half wave dipole or well grounded 1/4 wave vertical. I have the Traveler (now called the "Adventurer") which has the remote band-switching ability. If had to purchase it again, I'd forego this feature and get the Backpacker.
If you would be content to only work 10 through 20 Meters, then I would suggest looking at the TransWorld TW2010L Backpacker Antenna http://transworldantennas.com/ which never requires tuning and fiddling and by it's design (an "H"-design dipole) does not need to be high above the ground for DX work. Owners report excellent results, and the "Backpacker" model is easily transportable in a 4WD truck, though not near as small or light as a Buddipole. I am thinking of buying one of these myself, mostly for the ease of changing bands without tuning and the DX performance. But I would still keep my BP to work 40 and 6 Meters, and the possibility of working 80 and 160 Meters as well.

For remote use with groups (some help), I use a couple of 50' Max-Gain HD push up masts and full-sized dipoles up to 40 meters. Those who attended the OAUSA Field Day events got to see them in action.
 
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4x4truckstation.jpg

I have a buddipole, but when I was operating portable I used the pictured system more often for portable HF -- in front of my truck is a Sigma GT5 vertical, band switchable dipole. Overpriced, clunky but solid construction, and easier to use when car camping than a buddipole. It breaks down fairly small (nowhere near as small as a buddipole), and requires a tiny amount of 12v power to switch bands in the relays (easy with a hand-held AA battery pack).

I agree with the earlier comment about buddipole being fun, like an erector set. I remain especially impressed with the buddipole's construction quality.
 

xtatik

Explorer
The Sigma series antennas are high functioning units. Essentially the same as the TW unit with the Sigma being a slightly better performer due to being closer to full size. They have been very successfully used on a number of Dxpeditions. I chose the TW due to it's construction being a bit better overall and the fact that it uses hardware that allows it to go tegether easier/quicker.
They both use the same antenna design, being capacity-hatted vertical dipoles. They both require the center feedline to depart from the antenna at as close to a right angle as possible for about a 1/4 wavelength. And, you can't place them close to conductive materials due to coupling characteristics.
 

1911

Expedition Leader
... At 1/4 wave a dipole is a cloud warmer and suffers huge losses. To become effective on say 20 meters... a Buddipole would have to be mounted about 32-34 feet above conductive ground. This would require a larger push-up pole than comes in any of the BP kits .... Keep in mind, this example is for just 20 meters. Getting it mounted properly for 30, 40, 80, 160 meters? Fuggettaboutit.

True, which is why I mentioned it under my "CONS" list - but effectiveness is pretty relative. With all it's limitations (and my less-than-optimal operating locations), I've still logged contacts on 20 and 40 Meters to several continents with only a 100-Watt radio. Lots of guys on the Yahoo Group use it for QRP.

In the end, every portable or mobile antenna is a compromise of some sort and you have to choose your poison. The real strengths of the Buddipole are its flexibility to build so many different configurations and bands, and its small size/light weight. For this reason, it is used by backpackers activating mountain summits and etc. Fortunately, most of us using vehicles to transport our stuff have more options than backpackers, though in my primary expo vehicle space is at a premium. Bottom line: the Buddipole is not any nirvana for antennas, but it does work and it works well, if you're willing to spend some time experimenting and tuning.
 

DarioCarrera

Adventurer
I like the portable design of the Buddipole but unfortunately it is a PITA to tune properly. Once the antenna is tuned, works great, but just thinking about moving to a different band would probably make me think about it a few times... I was going to purchase one but decided not to given the time it takes to tune... Otherwise a great little antenna!
 

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