Pete, I used to wear a helmet on the tower .. it got too HOT inside, so I now simply take extra precaution when working above my head with tools. Don N8DE
If your SPG system were to be struck by lightning [via your antenna/tower], I would be willing to bet that the power company and telephone company would both sue you for causing damage to their syste
Whether or not the unused slopers act as a counterpoise or not depends on the switching arrangement. If they are 'floating free', then you are right; however, if the unused slopers are electrically g
Need copies of NEW manuals for 204BAS and 155BAS. These contain dimensions, etc., for 17m and 12m settings for these two antennas. Will pay for copying & mailing, if you cannot email scanned copies o
Al, Wrote you direct, but thought I should put it on the reflector, too. Take the resistor OFF at the 'source' end. You have it in parallel with the LOAD. Then take those measurements again! Don N8DE
Add up the lengths of all the element material you have. Divide by 5 [assuming a 5-element yagi] If the result you get is about 36 .. it's a 20-meter antenna, If the result you get is about 23 .. it'
OOOPS Those measurements are in FEET. Don N8DE ________________________________________________________________________ This list is sponsored by the new eHam.net Store. When you buy products like IC
Dana, When you purchased the property, you were required to have a survey as part of the 'closing' process. That survey, which the mortgage owner has, will have the property description and a 'map' o
Then, again, the mast might have been some of that 'el cheapo' steel masting that is found at Radio Scrap and Home Depot, etc.... thin wall, but looks nice. Don N8DE _________________________________
My reply inserted below: Sounds like a good way for you to work those bands using your tower. You DO have room for radials, though they might now be 'radially placed' .. just put them down wherever y
Why not try omega- or gamma-matching the boom after extending it with small-diameter tubing? You could even use some fiberglass poles out of the boom, running wire down them to the end .. and then dr
I've always used mineral oil, but I made an online search and found this: "Biodegradable transformer oil" @ http://www.biotrans.net/wlp/biotransfirst.htm made from SOYBEANS. Perhaps this is what we'l
You don't need 5 elements to do this. You can use three identical antennas .. switching the phasing so that you are using two of them at a time. My 40m array has a 'central element' [A] and two other
Mike, Both Delrin and Teflon have good electrical properties of > 10^14 ohms per inch. I would suggest using WHITE Delrin, 3/8" thick to make the 'plate'. Don N8DE List Sponsored by AN Wireless: AN W
When I was a 'young buck' in the early 60's, the radio store in Cincinnati had a telescope set up in their front window so customers could watch the workers building the Channel 12 tower across the v
The manufacturer is 'Unifrax' .. don't know if they have a website. Don N8DE List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems, Trylon Titan towers, coax, hardline and more. Also
1. Put a continuous loop of rope, with a marine pulley attached to it, over a high branch. 2. Run a lanyard, attached to the end of your antenna, through the pulley. 3. Pull the rope with the pulley
Perhaps this is what you're looking for: ?? http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1311314629 List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems, Trylon Titan tower
As I am 'cleaning out the garage' to 'get rid of the junque', I will be listing LOTS of items for sale. I'm offering these to the reflector group before putting them on ebay: For Sale: THREE Johnson
My 80m vertical is a 60-foot self-supporting aluminum tower [Universal] that is insulated from the base using solid, fiberglass rods that are drilled to match the mounting holes. I use Dacron guys at