The trade name is Noalox, an apparent contraction of "no aluminum oxidation." Use it where aluminum tubes overlap to reduce corrosion and facilitate assembly and disassembly. Scotch-Brite pads are in
I have used Dacron with good results, but not in a pulley arrangement. Lately I have changed over to trot line, a tarred nylon twine. The local sporting goods store carries several sizes up to 440 lb
If you are looking for values for your antenna, only use the transmission line to connect the analyzer. Adding other components distorts the true antenna values. Even a very long transmission line di
coax for lower ones. The generally accepted definition of "high" is more than a wavelength; "low" is less than a half wavelength. Let's say you have an 80M dipole made out of 12 AWG insulated copper
their fields to overlap in a way that decreases their effectiveness in getting rid of electrons during a lightning strike. Ground rods have fields? 73, Keith NM5G ___________________________________
copper plates solve nothing except acting as a place to bond all the antenna ground connections together, and those connections are only effective if they are very short. These should always be used
I heard stainless is not good for carrying RF current. 73, Keith NM5G --Original Message-- From: towertalk-bounces@contesting.com [mailto:towertalk-bounces@contesting.com] On Behalf Of Pat Chiles Sen
The fall arrest lanyard can connect to only one ring. Its position is dictated by the harness you are wearing. Most of the harnesses I have seen have the ring in the back. 73, Keith NM5G I know this
Those reels are very nice and give the worker plenty of mobility. However, I understand they are more costly than a simple sewn fall arrest lanyard, and I don't see the need for one in my tower work.
40 ought to work really well! <grin> Assuming you meant 8 on 40, I think you will be pleased with the result. 73, Keith NM5G --Original Message-- From: towertalk-bounces@contesting.com [mailto:towert
Speaking of low wire antennas, what was used on Peter I for 160? 73, Keith NM5G I cannot speak for the entire world, but here on the right coast of the usa sometimes 160 signals do come in quite high
A rebar lanyard is used in applications where the climber is attaching to a rebar cage. The hooks are large "gorilla" types and are excellent for typical tower climbing also. 73, Keith NM5G ORIGINAL
All coax cables running up my tower are terminated with PL259 connectors at the tower base. These are connected using barrel connectors to coax cables running through conduit to the aluminum bulkhead
How about (on phone) "W5NC Field Day" "K0RC" "K0RC 2A STX" "QSL 1D MN" "QSL 1D MN QRZ" 73, Keith NM5G And it's called Styrofoam insulation, not stylafoam... (a former boss used this and drove me nut
Sometimes heat will help. The theory is that the outer tube will expand more than the inner tube. But be careful not to apply so much heat that the temper in the metal is lost. A heat gun would be a
While you are continuing your luck streak, think again about a possible lightning strike. The energy in a typical strike is many times the amount you can bleed off with your tower/antenna system. If
No need to present facts available to you. Just look up measured energy of a strike and compare it to the ability of the porcupine to dissipate this energy. BTW, while you are looking for facts, try
try and prevent the charge build up to where the strike occurs. Well, if you are going to prevent a strike, you basically have to bleed off all of the strike energy. I don't think that is possible.
Many years ago I purchased a porcupine based on a testimonial. Now that I have facts to dispute that testimonial I no longer need it. If anyone out there wants it, it is yours free. If you live near
I should have phased it differently to say there was insufficient potential to cause a strike rather than draw an arc. At any rate, it is a THEORY. I have not seen any other theory to explain this. 7