Hi Jim, I am moving my station to Maine -- and asked the "QST Doctor" about trees and antennas back in January 2007. There is a response in the July 2007 QST "The Doctor Is In" column. I also receive
Hi Mike -- totally agree. I wonder if anyone has modeled one of these things? If it's really both horizontally and vertically polarized (not circular) then it has to be poorer that a similar number o
Hi Dan, You said this far better that I did! Thanks for the better explanation. For the record, I used a 2M yagi at 45° for a few years to "optimize" (compromise?) both SSB and FM. Worked. Turned out
Hi Jim, Good idea. One of the reasons I went with 45° is that I did not want the vertical mast to ruin the antenna pattern, which happens when the mast goes though the yagi, or even if the yagi is at
Hi TT'ers I am bringing up a second station at a 2nd home in Maine. My first rig will be for 2M/440 FM, followed by HF. A question about mounting my FM "stick." I will be using a Diamond X-510NA or e
Thanks Alan, My concern with a wall mount like these is that the moment arm is long enough such that the mast and antenna could bend the two mounts sideways in opposite directions and lean over. I ha
It was the John Hancock Tower, in Boston, in the early 70's. The solution was thicker glass! They also had to ADD dampers: "The building's upper-floor occupants suffered from motion sickness when the
Hi TT'ers, I am a member of the W1HP Philips Medical ARC -- ex. HP Medical ARC -- in Andover, MA. For ten years we have been using a homebrew 3-el. 6M antenna, boom length 66", calculated gain from Y
Hi Jim, You might also want to look at DX Engineering's insulated support blocks: http://www.dxengineering.com/Products.asp?ID=24&SecID=1&DeptID=39 With these, you can stick to aluminum plates. 73 --
Hi Greg, Check out http://www.directivesystems.com/STACKING.htm. HOW TO PLAN THE INSTALLATION OF MULTIPLE VHF ANTENNAS ON ONE MAST This is a paper on stacking arrays of yagis. It will help you figure
Interesting idea! Since no current band has a 9 in it, you could substitute white for black and go "EIA" -- this would cover the WARC bands: 160M - brown, blue, white 20M - red, white 17M - brown. vi
My apoligies -- I should have gone a bit farther up in converting SHF frequencies to cm! Larry _______________________________________________ _______________________________________________ TowerTal
...and with sunspots coming back, you will probably see a 10M transceiver again too... 73 -- Larry -- W1DYJ _______________________________________________ ___________________________________________
Hi Barry, If you only need one transmitter at a time, and if the switch will be in the shack, you could use the MFJ 1700C: http://www.mfjenterprises.com/Product.php?productid=MFJ-1700C 73 -- Larry --
Hi all, Perhaps I am incorrect -- but my understanding is that "UHF connector" originally meant "Universal HF connector" -- which is what is it good for... 73 -- Larry -- W1DYJ ______________________
Formal studies in business have shown that it takes from seven to tens times the effort and cost to find a new customer vs. keeping an existing customer. 73 -- Larry -- W1DYJ ________________________
Hi Vasile, The best discussion I have seen about stacking is at Directive Systems: http://www.directivesystems.com/ . The App Note is at http://www.directivesystems.com/STACKING.htm This is really ab
If memory serves me well -- that is simply a vertical or horizontal cut through the plot 3D plot. It is not the polarization of the field. 73 -- Larry -- W1DYJ _______________________________________
Thanks Steve -- I stand corrected. I've never played with that part of EZNEC before! 73 -- Larry -- W1DYJ _______________________________________________ _____________________________________________
Hi all, I have a request. I am helping the widow of AG1V (SK), John Bubbers, find a ham home for his HF triband. Unfortunately, at this time I do not know what the antenna is. There are pictures on m