To: <towertalk@contesting.com> I would like to add a little. I have minimal experience tower climbing. I do have some sailing experience and have used safety lines connected to harneses to keep me o
Wes, The time rate of change of current in a bolt is such that inductance is very important as is the location of that inductance. Best regards, Sam, W5LU To: <towertalk@contesting.com> _____________
The grounding system is to mininize the magnitude of the transient reaching the shack. It will not eliminate it. The single point ground is to eliminate the potential between the pieces of equipment
I agree with Jon's statement. I began sailing in 1978. Have done 2 Atlantic crossings with my son in a 37' sloop. The bowline has about 70% of the strength of the line. It is about the only knot that
Add to that the rolling hitch and you need nothing else. 73 Sam Blackwell, W5LU late of SY "World Enough" To: <towertalk@contesting.com> ______________________________________________________________
Put up an antenna that does not require an RF ground. Keep the SWR low and possibly put a choke on the coax. An RF ground is not necessary or even very useful in the shack. 73 Sam, W5LU To: <towertal
I have had a 5El 20M log-yagi up for 15+ years. Bandwith, front to back and front to side are the best I have ever had. There are 3 driven elements, and standard ref and dir. I always do well in pile
The original Quad was designed to eliminate corona discharge that was a problem with high power transmit by the station in HC4 land. It would seem logical that the same would hold true on recieve if
I may be mistaken, but my memory from my sailing days was that of the three common wire rope lays, 7x19 was the weakest. 1x19, 7x7 and 7x19 in that order. Flexibility was just the opposite. 73, Sam,
What about a 3el 1/4 wave vertical yagi? (see ON4UN book for 160 and 80) This would seem to have many of the advantages of both 4SQ and shorty 40. The yagi seems easier to tune and has good gain and
Mount the bottom section to the legs and plumb this with a 4' carpenter's level. I did this alone when the concrete truck arrived with no problem. Forget the rebar unless you can make an accurate jig
I have had a Universal tower up for over 25 years. Two years ago took it down and moved it to a new location. The tower remains in good condition. The same cannot be said for the grade 8 bolts that a
I am not sure there is anything that can be done to lower the probability of a hit except lower the antenna. It would seem that the thrust is to lower the amount of energy that gets to the shack and
Lou, I,too, have a Universal tower. From previous experience with this tower, I had the steel legs that are in the concrete sent from Universal with no finish. (They are usually sent with a painted s
Jim, What is the frost level in KH land? Sam, W5LU To: <towertalk@contesting.com> _________________________________________________________________ Send and receive Hotmail on your mobile device: htt
Another thought on the mast subject: When I recently put up my tower, a 60 foot free stander,the top secton was not installed. I tied the top section along side the tower at ground level. A block was
Try www.solder-it.com 73 Sam, W5LU To: <towertalk@contesting.com> _________________________________________________________________ MSN Photos is the easiest way to share and print your photos: http:
I have had a 60 foot Universal tower up for over 20 years. I moved two years ago and moved the tower at that time. There has never been a problem. I did obtain from the company (a long time ago) a st
Good evening all, When I reinstalled my Universal tower I intended to use all stainless fasteners. One problem, the need for grade 8 bolts. This is most true as you near the lower sections where the
I believe we are getting into apples and oranges. The T&B copper containing material not only keeps trash and moisture out and reduces oxidation, but also insures low contact resistance. The copper g