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Check out this site....FANTASTIC insight on building a Type 43 transformer....
especially go to the first link on page 1 From the above link.....here it is just to emphasize it....
73, Jim / AC3B
On Wed, Mar 18, 2020 at 11:00 AM Joshua Wood <WoodJRx@...
Thank you all for your ideas and recommendations, in this thread and all the splintered ones, private and public! My wife had minor sinus surgery, and I work in a hospital, so I've been a bit preoccupied. I'm definitely going to go through the responses as soon as I can!
On Mon, Mar 16, 2020, 14:10 Gwen Patton <ardrhi@...
From the consensus here, I think I'll make myself another full-sized W3EDP End-fed and try that next time I go operate at the park. It'll have to be when the parks are actually OPEN again, as the recent COVID-19 quarantine effort has caused them all to be closed, at least in my neck of the woods. That's literally...one of the parks in question is a humongous farm with big wooded areas here and there with trails throughout it. It's called the Norristown Farm Park, KFF-4363, and it's my favorite since it's only a mile or so from me. One of the side parking lots has a couple of handicapped spaces my van will fit into, and has a picnic table under a small shelter just 50-75 feet from the parking lot, so I can roll my little flat roller cart over there from my van and set up. There's plenty of room, a flat, grassy area, that I usually use for my wire antennas next to the table, so I set up my antenna, then set up the station under the shelter, and begin operating. The only end-fed I've used there so far is the SOTABeams end-fed with the built-in 20/30/40 tuner, and that works reasonably well. But I may just try a W3EDP this spring with my Elecraft T1 tuner and see what results I get.
I've got other experiments on the burner as well, including a dipole made of electric fence strap -- 15 parallel stainless-steel wires woven lengthwise into a 2" wide strap of poly webbing. It's used to make some fantastically wide-bandwidth single band dipoles, so I want to see if I can make a fan dipole using the stuff. There may be too much coupling between the wires, but it's worth a try. It might just need a lot of trimming to overcome the coupling. If that's the case, I may be able to make a decent multi-band fan dipole that's simpler to erect. I'd model it, but frankly, I don't yet know how to use the modeling software. I've got several programs, but they're so much Greek to me! hi hi
I am a big fan of end fed antennas for portable use as well. Even when I
am in a wooded area I usually use my 31' or 28' Jackite pole as a
support. I attach the wire to the tip, extend the mast to its full
height, and then just let it lean into a tree.
On 3/16/2020 10:36 AM, Nick Kennedy wrote:
> Getting back to the original poster - I like the EFHW for field
> operations because it only needs one support. I'm a total klutz when
> it comes to getting lines through trees. I also like the Jackite pole
> (31') as a support.