Don't know, don't want to know. Anyone old enough to remember about loose lips, sinking ships and social media. ? 73 Bruce-K1FZ Maybe they are running tests on a some MF system. Mike N2M ___________
In Broadcasting, we used silver plating of tuned circuits often as copper oxide, depending upon the degree of oxidation, is a poor conductor, Silver oxide is a much better conductor than copper oxide
Bill, The Back Stay rod was to show with correct galvanization of the 1920's they stood up well. The parentheses was a reference to wire used in antennas. I should have added "used in antennas".
One of the factors for arc over is the diameter of the tower and top support pipe diameter & length. A really FAT 1/4 wave tower may have 1000 ohms at the top, while a skinny tower would have much mo
Thanks Tree Similar to a BOG antenna that self terminates beyond a length per band/frequency. Exceptions: dry sand & other non conductive surfaces 73 Bruce-K1FZ wire than quite a bit. length. N
The on/in ground wire- as RF advances toward the normal 1/4 wave high impedance (/high voltage point) finds itself tightly coupled to a +- 350 ohm typical ground resistance. 'Hogs the voltage righ
Look at the radial field as a FAT inductor. A fat tower has a lower Q and wider bandwidth, lower impedance at the top/far end. 73 Bruce-=k1fz. GM BRIAN... I HAVE BEEN OFF TOP BAND FOR SEVERAL YEA
Craig, Great looking toward the large circular arrays. Getting to be a popular item. Must be a hoot to switch it around in a contest. Two of my antennas are Beverage using WD-1A. One a two dire
Have had inquires about self termination of BOG antennas. *It varies with the type of soil, moisture content, and length of the wire relative to the ground. Question #1 My BOG is directional, in t
Wished I had some eggnog. May get some. Meant to type impedance ratio. Thanks for correction ! . 73 'Bruce --Original Message-- From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of
Common thinking: Long ground rods are not necessary. Then a lot of reasons why. Most biased to a damp warm climate. When ground rods are necessary, use long ones because: In Cold climates
Not true. Maybe you are thinking of Dipoles, Yagi etc. Try an BOG antenna with an isolated transformer with the ground side of the antenna winding connected to a 1 foot ground rod and check sign
Jim, Happy holidays. 160 meters appears to be rebounding. Some have used a trace amount of rock salt (not enough to hurt vegetation) very close to the ground rod. It holds moisture and improves
Jim, Seems that someone is unable to understand we are talking about ground rods for receiving antennas working against ground. Could'nt have been following the multiple postings. Maybe a hacker try
Worked V55V 12-28-2014 at 0424 UTC. Good solid contact. Took a break from the rig, receiver still on his frequency. Noted His signal was coming up as his sunrise was approaching. Then a station
Samuel "Sam" Beverage, W1MGP passed away December 18th. He was in his 90's and served in WW-II in North Africa, up through Italy into central Europe. Sam is on the ARRL DX honor roll, a member
I worked Sam almost every Friday evening on the local 10-10 net.for years. Related, Yes, I asked Sam a few years ago.and said his father and Harold were cousins. Sam was in his 90's but would not
Expected they would be best on the SE Beverage, but they proved to be better on the NE European Beverage. Waited until they got stronger before calling, but were at peak and signal went down ra
Congrats Herb, Only 5 have made it on 160 meters from North America. Special Congrats to JC, N4IS who is proving that it can be done from a small house lot. 73 Bruce-K1FZ On 160 and 80 E