You could use a DX Blaster cage dipole with a manufacture's claim of 5dbd gain. Their website http://dxblaster.com suggests many operators experience 2"s" units of gain or 12 db. Gang I've googled th
But they are comparing it to something buildable on earth by saying "We list it as having a 5dbd (yes thats dbd) gain over a dipole." I think it is fair to assume that the reference dipole has the sa
The ARRL antenna book shows a 2:1 SWR bandwidth of less than 300 KHz for an 80m cage dipole with a 6 inch spreader diameter. DX Blaster claims 400 KHz bandwidth for their 80m cage dipole. I am not su
W4HV informed me that DX Blaster 80m cage dipole uses 1 meter spreaders. These spreaders are much larger than the cage dipole example in the ARRL Antenna book so the 400 KHz bandwidth claim is very p
If you use a good feedline, there is little loss from higher SWR at the band edges. For example if you use 100 feet of Belden RG-213 at 3.8 Mhz and the antenna has a whopping 4:1 SWR ratio, the addit
I don't recall any previous posts on a multiband parasitic dipoles. I am interested in hearing how this works so please post your results on the list. John KK9A Maybe Don and Dave could carry this co
I'm wondering if you ever went with the 40M4LLDD? I am now considering this antenna and noticed your towertalk post. I emailed M2 earlier today and now wonder if they will respond. John KK9A [TowerTa
Another antenna that should be considered is the pennant. I installed and used a K9AY loop for several contests. Gary is a great guy and he made very nice products. The loop is easily switched and wo
I hope that all of the towertalk hams can decipher it. Google has a morse code message on their site today! 73, Scott W3TX _______________________________________________ ____________________________
Yes, make the vertical section as high as possible with in inverted L and a 1/4 wl vertical wire is even better. I had a 160m vertical wire at my last house supported by one of my tower guy wires and
Almost any rotator of sufficient size to turn the antenna with a potentiometer will suit your needs if you use a large enough cable to minimize voltage drop. My last station had cable runs well over
If you can't find a suitable metric nut at you local hardware store you could use a 5/16-18 bolt maybe with some large washers so you can turn the hex head or if you're really lucky you could find a
What is the relevance to U-Bolts or TOWERTALK. Mock disaster video: Los Angles N9FAA Here you go ... http://www.youtube.com/watch?v=GYoIb0wk0zE N9FAA -- On Mon, 5/18/09, N3XX <n3xx@charter.net> wrote
If you are trying to increase the bandwidth , I think that the cage is more effective at the end of the conductor or the horizontal portion of your inverted L. You really don't need a smart tuner for
WX0B relays are pretty tough, I have had many direct lightning strikes and no relay damage - even with no MOV protection near the relay. I have had MOV's short after a direct hit, so sometimes they f
Instead of relying on the undisturbed earth to hold your tower in position, you are basically relying on a 60,000 pound weight with a 10 foot square footing to hold up a 90 foot tower. Since this is
Is the concrete base growing? The original post (shown below) said that the base is 10 x 10 x 5 which is 18 1/2 cu yards of concrete and would weigh considerably less than your estimate. As Jim Lux p
Another option is to purchase an aluminum mast. You should be able to find a local supplier and the mast would not require any corrosion protection like purchasing steel tubing would. It is available
The Yaesu G2800DXA is a nice rotator. Are you sure that nothing is binding and that your coax is free? John KK9A I just turned on my control box last night and tried to work some stations when I noti
This is a great product: http://briteproducts.com/ John KK9A I plan to put up a used Rohn 25 tower in the next couple of weeks. Just got the permit today. The tower is in excellent shape, but I plan