Anyone know of a Rohn dealer somewhere near Vancouver, B.C.? Given the very recent Rohn announcement, maybe there aren't any. Closest I've found is Texas Towers but they don't ship to Canada. TIA for
I understand that Appendix E of ASCE Manual 74 provides a method for conversion of wind speed ratings averaged over different periods of time. I haven't been able to locate this manual in any of the
ARRL Antenna book shows how to determine whether a contemplated system will or will not overload a tower with a given top-of-the-tower wind load area rating. It is my understanding that the method de
I slice it off with a sharp knife. Jim Smith VE7FO Jim White, K4OJ wrote: Should I attempt to file oe scrape the excess solder off - when I do I get the impression I am screwing up the plating on the
I'm in the process of putting up an inverted L for 160. In the back corner of the lot I'm going to put up 30 ft of very skinny tower. The cross bracing looks like Rohn 25 but the face is only 6.5" Th
Finally got an inverted L up for 160. The vertical portion is 30 ft of skinny (6.5" face) tower insulated from ground. The horizontal portion is attached to the top of the tower, rises to about 40 ft
I've found the reason for my puzzling results. Just so you don't have to read the original post again, I had an inverted L on 160 with no radials (but with coax shield connected to ground so I actual
Hey guys, thanks for taking the time to formulate these responses. Yuri - 1. Yes, everyone has been telling me that the BCI is messing up my measurements. 2. Yep, aware of that. Where is K7GCO? Haven
I believe that "Lenhide" is spelled "Leyden". Leyden jars are basically capacitors. 73 de JIm Smith VE7FO Tower (K8RI) wrote: It can be, and has been shown using a Tesla coil, and Vandegraff generato
Hope this doesn't cause too much laughter but I keep thinking of that graph in the Ant Handbook which shows dipole Z vs height. Could you put up a modelled dipole at a known height, measure its Zin a
Hi Rob, The AlfaSPID rotator is designed for mast mounting. Take a peek at http://www.alfaradio.ca/alfaspid.html and http://alfaradio.ca/sm6fyq.html 73 de Jim Smith VE7FO Rob Frohne wrote: Unfortunat
Hmm... my Teflon coated frying pan doesn't seem to have any problem with heat. Maybe the temp is lower but I doubt it, given that the element it sits on is red hot. 73 de Jim Smith VE7FO Jack Berry w
Thanks Charlie, I feel better now. 1 day, 10 hrs, 5 min to Florida QSO Party - OJ 73 de Jim Smith VE7FO Charles Morrison wrote: Jim, I had no problem soldering regular PL's onto LMR-400. In fact, you
Gee Chuck, I was going to write and say I have had excellent service from Amidon. Just to check I picked up the last box of ferrites I ordered to see whose name is on it. Oh . . . . Palomar. OK, I ha
Sorry this is so stale. I'm way behind on my e-mail Force 12 calls the wire alumoweld. You can find it at http://www.alumoweld.com/ It is the aluminum version of Copperweld. They'll sell direct but q
Hi Dave, Maybe it's different now, but earlier GPS units were pretty inaccurate in the up and down direction. For example, I was trying out my Garmin GPS II on the ferry boat between Vancouver and Va
Hmm... This would appear to have severe ramifications for tuning the 40m portion of my C4SXL. F12 has a tuning procedure on their web site which involves adjusting the jumpers on the linear loading w
Hi Tom, First of all, I'm very nervous about dipping my toe into the pool where the big boys swim, but here goes. First of all, the MANY that you refer to has now been decremented by 1. Thank you. I'
Sorry to have taken so long to respond to this. I'm told, by many people who know a zillion times more about this stuff than I do, that increasing antenna gain doesn't improve received SNR under the
Hi Tom and Jim L First of all, thanks very much for your replies. I devised this simple model in the belief that it would reveal to me why a yagi will hear stuff a dipole won't, even though noise lev