I had a T-10 up at the previous qth. Loved it. It maintained no less than a 17 dB f/b over it's entire 13-30 mhz range. I took many measurements with a step attenuator and couldn't find anything wors
But a G5RV, including one rigged as an inverted-V, is _not_ an inefficient antenna, and no one should avoid using it because of comments like "I wouldn't mount a G5RV as an inverted vee; actually a G
circularly I have studied the material referred to and I find this "summary" way too generalized. Simply mounting the antenna in X fashion DOES NOT ensure minimal pattern distortion. The study indica
Towertalkians: We have a very expensive commercial antenna installed on a local TV tower @ 300'. The TV tower itself is 2000'. The repeater is a $1500 commerical repeater (for 2m). Since the repeater
I have had this rotor for about five years in two different locations. Location 1: Tennadyne T-10 LP 24' boom 13-30 mhz log periodic @ 72' 2 x 22 el K1FO 70cm long yagis @ 78' 1 x 12 el K1FO 2m yagi
Carl, Go look at the Tennadyne line of Log Periodics...they are quite moderate in wind load and are superb performers. I have had two of them and could not be happier. I have also heard good things a
600' of LMR-400 (very good, but affordable coax) has 3.9 dB loss at 28 mhz. Attenuation at this frequency is 2.147 dB per 100 METERS. Go to the following web site and it will do the calculations on a
Assuming you have at least a 50' tower and some beams on top, the 160/80/40 sloper works quite nicely. Be sure to put in a radial system under the tower, as if the tower were a stand alone vertical.
As I recall, when you use the inverted V configuration in either two half waves in phase or a double extended zepp, you do not end up realizing the gain at productive angles that you would expect fro
Changing the length is one option. Changing the included angle (the slope of the wire), also affects vswr. Assuming yours is top fed, you are likely to find the following: 1. The tower and wire do no
Now that is a handy observation and helpful formula. It is based on Tom's point that the perimeter separation need be no more than .025 to .05 wavelength for 1/4 wave radials. Now the question for mo
Yes, at my prior qth, I loaded it up with a tuner on both 30m and 40m. Since there is nothing to "go bad" from excessive currents or voltages in the T-10, it was just a matter of stuffing a bunch of
The article has a lot more info in it, including graphs to give you a feel for the actual losses involved and recommendations at the end. That single equation, however, makes reading the entire artic
While the gain you report is totally crazy, indicating some sort of gross error, the current distribution is not unusual at all. What I found when I played with slopers (1/4 wave) on 160/80/40 was th
Would you share the proper location for the balun on the Tennadynes? I thought a balun/choke belonged at the feed point, and that is at the front of the array? ...hasan, N0AN (p.s...I've had two of t
If you are talking about the T-10 or the smaller T-6, I would have to disagree with both of your comments. They are quite light and the wind loading is amazingly low. the T-10 on a 24' boom weighed 3
Comments interspersed in the text below: far get Stacking LP's is a problem because the spacing is only going to be optimal on one band. It can be done with decent results, but not like stacking a pa
Great concept, the SteppIR...but cost about 4x as much as the T-6. I helped put one up about two weeks ago. It works rather nicely, but looks like an accident waiting to happen. (complexity). ...hasa
Comments interspersed in the text below: far get Stacking LP's is a problem because the spacing is only going to be optimal on one band. It can be done with decent results, but not like stacking a pa