Hi Guys I have a standard 60ft Versatower with a Yaesu G-1000 and bearing mounted at the top, and just above this I have a Cushcraft A3WS (pic on QRZ). I want to extend the stub mast about 20ft above
Hi Jack, Some 30+ years ago VE3CSZ mounted a half wave dipole / inverted "V" atop his Hy-Gain multi-element rotatable yagi on a 64' tall tower--I thought it was ingenious at the time... Zenon had the
In my opinion the simplest way to accomplish that sort of thing is to suspend a horizontal rigid arm a meter or so long from the top of the mast using a short piece of rope. Fasten the trapped dipole
HI .. hey, back in the days of yore, there was such a bearing gadget built commercially ... trying to remember the brand ... Hy-Gain, perhaps? Anyway, I had one ...it might be in the jungle part of m
Years ago Ed K4SB (then K4DJC) wrote an article for 73 about just what you are asking about. He wanted to get his 80 meter Inverted V higher and he used a mast (20 feet or so) above the beam. He used
http://www.hamradio.com/detail.cfm?pid=H0-002775 I used a Yaesu Thrust bearing to do what you described. I fitted it upside down and used the four bolts that hold the bearing shells together to fit a
Hi Mark, You may well be correct--it was so very long ago that I can't recall (I'd only been licensed myself but a coupla years at the time, too). Zenon did what he did in order to get on 160-meters:
Jack, for the past 10-12 years, our club has used a simple device for our 80M vee over a 20M quad for Field Day. We found a sealed automotive bearing whose O.D. was just right for slipping into the m
Hi Jack, Yaesu makes a nice bearing that will fit over your mast and allow for another mast above it. On this extended mast attach your Inverted Vee's. 73 Pete N4KW __________________________________
The Yaesu thrust bearings even come with small brackets as would be used to guy a rotating pole. They can easily turn a steel mast into a rotating pole. The same arrangement could be used to support
Normally mounting a thrust bearing upside down is not a good idea...of course when you live in a mild climate that is not such a problem...unless you live near the sea. The bearings are designed to d
The inverted vee is likely to significantly distort the pattern and/or SWR of the Yagi. Are you sure you want to do this? Rick N6RK _______________________________________________ ___________________
Re mast height. Probably only a little higher than the turning radius of the rotating antenna since you would prefer not ot have the included angle of the inverted less than 90 degrees. My thought wa
'Over the Top' - the 'In Practice' column, Radcom, April 2009. PDF copy on its way... -- 73 from Ian GM3SEK http://www.ifwtech.co.uk/g3sek _______________________________________________ ____________
Hi Guys Thank you for all the replies, some great ideas there. Also, particular thanks to Ian GM3SEK for the .pdf - just what I was looking for Ian, and cheap too :) 73, Jack ________________________