Wire Antennas. On page 104 in inverted-L type of antenna called a Twin Lead using TV win lead in the L section with a length of single conductor wire making up the last 17 feet of the L with a few r
" Hi All, I was mowing today I wondered when I would ever get around to installing size of embedded in it aprox 2' long way through, so it's touching earth. I actually the I dug a hole estimate it we
I currently have a wire T-vertical with a 75-ft. vertical portion and a 75-ft. topload wire over about 60 radials. Feedpoint is around 25 + j0 at 1.825 Mhz, which I match with a toroid 1:2 unun. The
My shunt-fed tower requires an Omega match in order to get a good match has 3000-volt air variables in understand the calculation for the voltage across a series capacitor, but not how to calculate
Fellow Topbanders: I made a model of a shunt fed Rohn 45G tower with a 2 element short 40 meter beam on top. I used 78 feet of tower plus 12 feet of 2.375 inch diameter mast plus the actual dimensio
'm not a big antenna maker,so I think of buying a low band vertical .But between Magnum 160VX2 and Cushcraft vert and a short dipole for 160m band in inverted V shape and zag because of limited space
I'm fresh out of scraps of copper wire for radials and am considering wire. The other galvanized electric fence couple of seasons. Anyone else using the aluminum seen it in 1/2 mile rolls for about
(SP5DRH). They have problems with Internet are using dialup and will be not able to do it every ...snip... Topband antenna is 19 m high with 2 elevated radials (40m) 2,5 m above the antenna is on th
Hi All, I need some help getting a QSL card from TT8JFC because I forgot to QSL immediately and by the time I started asking for a QSL card I have been "stonewalled" by the operator and his QSL manag
PRELIMINARY DAYTON TOPBAND DINNER ANNOUNCEMENT à A save the date reminder ß Fellow Topbanders, this is only a preliminary announcement. Please mark your calendars for Friday evening, May 14,
Richard and other Topbanders: the Loop 80. Which leaves me a 14' X 29' Pennant is so good on 80, what if I double the size ? To W1KSZ/7 I think you are on the right track if you do not care about 80
Hi friends in radioland ! wave in line broadside radiation. Supposedly the another 10 degrees compared to a 2 el broadside with Anybody out there capabilities ? OM Wolf - don't forget that endfire wi
Hi All, Sorry to be asking this question here, but the responses on other reflectors are not helping much. A friend has a Commander 2500 with Crydon solid state relays that turn the amp on and off.
that is 67' tall. I want to top-load meters and would like to use a three wire approach for physical symmetry in support of the vertical element. Does anyone have an idea of top-load it for wild gues
Thanks for all the replies to my question about the Crydom solid state relays. I have found that most of the Commander 2500's use Crydom A2425 relays. This means the control is 90 - 280 VAC, the swi
tzitzikas_ee et al: (grasshopper or cricket in Greek?) While I agree that an RFChoke to ground can help drain static and a lightening surge protector is also a very good idea, nothing outperforms t
Fellow Topbanders, The output is 50ohm. My [5*(wave lenght)]/16. I read at series capacitor 0-1000pf is enought to with my antenna. What do you think about this? Do propose anything else? (maybe a va
Hi all - I tried a private post, but Bob Wertz' spam filter will bounce me so I am posting for all to read the following. IMHO here is the correct commen tary 73 es GL George K8GG -- Original
Brian, et. al., In addition to the other comments I would only add that a flexible, braided strap from the top of the tower to the mast at or below the first antenna boom provides a direct path for R
your answer. What elevation angle has the 5/16 inverted lenght difference is just a 5/16 inverted L? If i keep the 5/16 inverted L what i change to increase the signal? Now i am using 6 radials (4 1/