Try both; experiments are cheap. You can build both of this for maybe 50 dollars for both of them. I've never done the G5RV "junior"; results could be interesting. I think on the whole the fan dipole
I have used a regular balun, rather than choke beads, with success on a full sized G5RV. You can read up on the theory of it; it's all over the internet. This is not a new design after all. I don't k
One way of dealing with 15 is to just use an antenna tuner which basically reuses the 40m dipole as a 3/2 wavelength antenna. You then just do 40/20/10 and have only three lines to worry about. You d
As far as testing goes, one way of getting real world answers is to use ReverseBeacon.net and see what you get from various stations as far as dB ratings go. Maybe over several days if you can. I've
I have had about three years no problem in this situation. What I did was to add an ordinary 90 degree galvanized angle bracket (but one that provided a little rounding) and put on a few cable ties o
You can put something like this: https://www.sparkfun.com/products/9669?gclid=COHvxKWbp8cCFQ4paQod9MgLog . . .connected to the remote PC or perhaps a Raspberry Pi or something. Or, use a cheap Arduin
Do what you like, but I am very content with the "shorty forty" two element that is on my Force 12 6BA. I got it in part because of the limited windload on my (conservatively rated) tower, but I must
I know a lot of you guys have Green Heron Controllers. Up to today, my RT 21 has worked flawlessly. Firmware version 3.07, unchanged from a while back. However, today is a new adventure. Computer con
I am in the middle of planning (and shortly will be executing) a plan to put up my second tower. It will be a 70 foot Rohn 45, built strictly to Rohn's specs. That's not the problem. The question is
The Rohn spec calls for the legs of the bottom section to be buried a few inches in pea gravel below the concrete. My contractor suggests that as long as the top is properly sealed, it's overkill and
TowerTalkians -- keep those cards and letters coming. I appreciate the advise and am taking it into consideration. I will be pouring concrete in about ten days. Did the actual final layout of the tow
Simple math says 3 inches is 1/4 of a foot. 1/4 of a foot divided into 40 feet is 0.00625 or a shade over half a per cent. Now, I am not an engineer and I haven't calculated the stresses involved. Bu
I am in the process of putting in two new towers on my property (yes, I am blessed). I'm a little nervous about Cadwelding to the legs. I suppose you'll all tell me it has been done dozens of times,
That may be a nice alternative, but what advantage does it offer over simply connecting a regular ground clamp? It seems like a very nice idea, but I need to understand what I gain versus just clampi
I got a private note indicating some real-world problems (holes in the pipe) when Cadwelding Rohn towers on at least some occassions. So, for the record, it doesn't look like a great idea to Cadweld.
A friend of mine told me that someone, somewhere had calculated a "magic" length for guy cable. If you went down 10 or 11 or 13 feet (or whatever it is) off of your tower and installed your first ins
Thanks, Jim. A little too much "magic" in your formula, though. I'm trying to understand this as well as "cook-book" it. So, I did the "obvious" thing and constructed my own table based on multiples
I could imaginably insulate my guys from the tower sections, because I am using the Rohn brackets to attach them. I would have to find some suitable material before the tower went up, but I have time
Just a note to my many friends on this thread. I have not been responding to everything, but I assure you, I have read all of this with great interest. I am still a little unclear as to whether I sho
Yes, I have often wondered why annodized aluminum couldn't be used. I assume there is a reason. But it would sure help make antennas less conspiculous. WO7R __________________________________________