That's essentially what the submersible heatshrink is, big heatshrink filled with hotmelt, so as you shrink it the inside melts and seals. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http:
They work, and are easy to solder if you don't want to use mechanical connections.. but the common galvanized steel wire doesn't last very long. Check out aluminum electric fence wire. David Robbins
1. the separation distance is not as important as the vertical takeoff angles needed from your location. Hfta and other programs can help answer that. But with only 30m of tower to work with I would
Personally I would put the 40m under whatever else you want to put up. They sag quite a bit, especially if you get any ice. And they need a boom brace attached to the mast. If they are the bottom ant
Either use steel for the bottom section that he could reach, or put a piece of pipe over the ropes to protect them. Be sure to make the ends of the pipe smooth or use something to keep them from rubb
Well, with 4 of them in the air now and another on the way I have seen a few rings... 3 different versions so far, and I have been promised this latest one is even better. there have been big changes
What frequency range? what do you want to do with the tdr? And will this be an on-going production or one time?? tdr's may not be the best thing to measure the length of a line, there are many other
Yes that has been brought up before: http://www.k1ttt.net/technote/yaesu.html#funnyspeed David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://www.k1ttt.net AR-Cluster node: 145.69MHz or teln
I was thinking that maybe for my next big erection I could use a vista powered gps surveying system to align the new 80m 4-square towers to due north in case the plastic owl has blown off course and
that may be ok, I still need the snow to melt and then get a contractor to come clear the land of all this horrible woody over growth. I don't heat with wood any more so all this stuff that has grow
If its relatively new hopefully it has stainless hardware and hasn't welded itself together. On smaller antennas like that I would normally take the elements off the boom, just tape them to it and ti
You can easily test the pot. Just put an ohm meter on the cable coming down and see if it goes through the full range smoothly as it turns. If it smoothly tracks through the 160 degrees as the rotor
Not biased... I would call it 'experienced'. And the voice of experience is always welcome. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://www.k1ttt.net AR-Cluster node: 145.69MHz or
They were crawling up the wires to the tower to do something to the attachment point between the insulators and cables. This is a place where they frequently have to replace damaged hardware or wire
The rcs-8v just uses 12v relays so any normal relay drivers should handle it. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://www.k1ttt.net AR-Cluster node: 145.69MHz or telnet://dxc.k1
I would get the 9405 and parallel the extra #18's with the #16's for the two motor power wires. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://www.k1ttt.net AR-Cluster node: 145.69MHz
The first installment of the 2007 antenna/tower work page is now up on my web site. This one shows pictures and the story of the damaged 40m4lldd antennas over this last winter up to the final reinst
1/2" rhino rope from wb0w is the best stuff I have ever used. It ain't cheap, but it holds up well, doesn't have the stretch or twist of laid ropes, and is very easy to tie good knots with. David Rob
It tells me that you either need a 2:1 transformer or a matchbox to make the rig happy to get on the air... so go for it! make some contacts and have fun! David Robbins K1TTT e-mail: mailto:k1ttt@arr
Or maybe take it to the antennas reflector, that one is way underused. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://www.k1ttt.net AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net