The Defpom Forum, for RadioMods, S&M Software and Music by The Defpom

They look great! Thanks for sharing them.

Because I was asked, the best vertical of those I've made: 1. 1/4 wave Ground Plane : Smaller than many others, light weight, easy to mount, simple to build. Wide-banded, easy match. No matching network required which translates to diminished losses. Potential to handle lots of power because there i...

They are the prongs that the little foil covered board at he back of the main board near the finals is suspended between.

Look here. They will be at the upper center of the picture.

Because someone asked for it: I used two of these: http://i1205.photobucket.com/albums/bb426/Chal_Cirilo/64wave/zplate.jpg and one of these: http://i1205.photobucket.com/albums/bb426/Chal_Cirilo/64wave/081942088196.jpg I straightened the Z plates into L's, and combined them with the mending plate to...

Close up shots of the current matching coil.

Thanks, Animal.
I love this part of the hobby most, and will surely enjoy your photos when you get them up.

I took some much more gradual readings of the antenna in its latest configuration today @ 34' elevation: 29.350----2.0----R24--X4 29.250----2.0----R25--X2 29.150----1.9----R26--X5 29.050----1.8----R28--X8 29.000----1.7----R29--X10 28.950----1.7----R30--X12 28.900----1.7----R32--X12 28,850----1.6----...

Worked on the antenna some more, and not so sure I've noted any improvements from the analyzer standpoint. I put on a cap hat just to see if it made any measurable difference. It has an overall diameter of 14". I had to work at an acceptable shortening length for the antenna vertical, and ended up a...

Up on the platform working on the antenna again.

I have added the platform to work from to the top of the wooden section. As with all things I do, there is a little at each stage that tells me I have a little more to do. I am going to add some more guys, especially at the top of the wood section, if I'm going to send any time on that platform. I h...

I have a little more work to do on the tower to get it where I want it to be. One more innovation will be an 18" x 30" platform near the top of the wooden section that I can raise when I want to stand up there and work with the antennas, and will fold downward against the side of the tower when not ...

I have made some modifications to the tip over tower that will beef it up. It is now comprised primarily of an ?- beam constructed of treated 2 x 10 x 16' and 2 x 4 marrying them together. Inside the beam I have mounted my 40' push-up so that the bottom of it is 1' above the break-over point. This a...

These readings are on the antenna after I brought it back down to 13' height so I can modify my tip over tower to make it more testing friendly. What we have is several readings of the antenna with the latest matching system as previously posted. The readings are 4 different sets consisting of the ...

http://i1205.photobucket.com/albums/bb426/Chal_Cirilo/64wave/F0168.jpg Taking the readings from within the shack, antenna at 42' height: 28.265 ------------ 2.0 R=61 X=34 27.979 ------------ 1.5 R=49 X=22 27.571 ------------ 1.0 R=45 X=1 27.555 ------------ 1.0 R=46 X=1 27.405 ------------ 1.2 R=49...

Hello, Johno. Fancy meeting you here! I worked on this thing some more today trying to prove to myself it could be done. Here is what I did and the results. First using this coil: http://i1205.photobucket.com/albums/bb426/Chal_Cirilo/64wave/4612/F0166.jpg 2.0 R= 28 X= 21 --------- 28.713 1.5 R= 56 X...

I raised the antenna up 5' to 13' elevation, and as I had suspected, everything went south. Apparently some ground losses were affecting the match, and the appearance of being good was a result of being too near the earth. So I've been working on improvements in mechanics of the antenna, and it's tu...

I decided I wanted to put another 5/8λ Omni in the air before I moved on to other antennas, but decided why not go .64 first and see if I like it. To me it looks really short after working with Sigma IV/Vector 4k antennas. I have to get my photos ready, and post some current results so far with the ...

I was asked by some to break the steps down and add photos for them. This is it. If you want a vertical dipole then: 1. get two 1' pieces of PVC with sufficient diameter to insert an aluminum tube into. Because my materials for this dipole Require I have a taper on each end I am making the lower ins...

Due to questions on various forums I am posting this re the dipole. The one in the above photos over the Yagi was mine, the other I made for a fellow across town who lacked funds for a decent antenna and was using a mobile mag-mount on a window air conditioner. Both of them performed as well as a di...

There has been some repeated interest in homebrewing a suitable dipole for vertical use on several forums and numerous threads. I decided to put this info up so a forum seach could take them directly to this method of getting on the air with an easy to make, pole mountable, rigid version of the vert...

It's up at 37' to the boom, now.
With the 80" spacing on the new aluminum boom, it seems to have smaller beamwidth than it did with spacing at 75", the last spacing.

Cleaned it up a little more:

Today I constructed a reflector and put it on the boom with the driver. Tomorrow I hope to finish it and see how it does. After that we'll see about perhaps making it dual polarity. . .

Well, It went up on its edge:



and then because I already had the director stored behind the shed it grew and appendage:

Some have said it's hard to tell whether the loop is mounted vertical or horizontal. I hope this helps:



Some things are so lovely it almost makes you cry . . .