I am using a "small" prop pitch motor to rotate a 7-50 Mhz LP (15 ele on a 45 foot boom).The power supply (about 24 VDC) was at the top of the tower (100 feet). I recently burned out the bridge recti
I am using a "small" prop pitch motor to rotate a 7-50 Mhz LP (15 ele on a 45 foot boom).The power supply (about 24 VDC) was at the top of the tower (100 feet). I recently burned out the bridge recti
Hi Mat - I have a fairly large LP which I designed and built about 10 years ago and still use. It covers 7-55 MHz with a 15 elements on a 46 foot boom up 100 feet. When I first started using it I had
Hi Jim - Did you try using the AT on any of the 756's ? Gene / W2LU _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@co
Just keep in mind that the commonly refered to dbd = dbi +2.15 commonly assumes peak dbd in free space and dbi in free space. When you move to half space, or above ground, things start getting sticky
Add to quote from GRF's - And neither will you ! Gene / W2LU _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contestin
Hi Rex - Another two cents worth - A four foot shank sounds a bit short, even though installed at a 50 degree angle it still has to pull tthrough 4 feet of earth. Remember that closer to the surface
Hi GreggI've never tried that but I believe that if it's close enough to act as another parasitic element it will have to couple into the driven element and would most likely lower the feedpoint impe
"Smart" is good, but remember "there's no free lunch" Gene / W2LU _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@cont
As a newcommer to this group I am totally at amazed,considering the talent that the group represents, how much time is wasted on trivia. Gene / W2LU -- Original Message -- ___________________________
Hi Bob -You are probsbly aware that the slopping top load wires have a vertical componemt in their current which will subtract from the desire vertical componemt of the main element. Granted it's nea
I'm supprised I haven't heard much duiscusion regarding Cable TV 75 ohm burial cable. 75 ohms isn't too much to deal with, it's cheap or free, and has the self sealing jacket. My tower is 200 feet ba
If possible you might try to check with the tower manufacturer and see how marginal the vertical forces would become if you still used 25 and fifty but just brought the anchors inside you property li
Hi Paul - I buildt a small, 100 watt, "balanced " tuner, using a "T" circuit, with "floating chassis", insulated shafts and torriod at the 50 ohm end. Judging from rf ameter readings in the balanced
Just to add a little mud to the water, I have three old "sylsens" in hand with the following tagged info on them - All three are five wire General Electric units and measure about 2" dia x 3" (plus c
Hi Tom - I would highly recommend the use of Penetrox (or similat). I've used it for several decades and find that it seems to hold up forever. Besides the conductivity issue, close fits in the tubin
Re Stainless clamps. I suggest you check out McMaster-Carr (mcmaster.com). Industrial pricing. Order by noon, delivered next day (to Upstate NY). _______________________________________________ _____
Hi Larry - I'm using a dual, phased, four direction pennant system with 70 foot loops on 40, 80 and 160. I find that it's still very effective in the broadcast band, so I would guess that the loops w
I have observed the same here re pennants vs beverages. I haven't got room for beverages and although the pennants are a fairly good "cheap shot" I know that other guys in Weatern New York State with