I've zeroed in a little more closely on W3CRA's location and added an HFTA analysis of his location. "Given Frank's assumed location, here is the HFTA analysis. Indeed the blue plot below shows gain
Thanks to W3WH and K3VX, there is now a picture of the remnants of W3CRA's tower and Telrex 20M326 wide-spaced 20m 3 element Yagi. http://users.vnet.net/btippett/w3cra.htm (bottom) It's hard to belie
Excerpt to another update on my W3CRA webpage: http://users.vnet.net/btippett/w3cra.htm Thanks to Bob W8JYZ for an excellent summary of Frank's DX-ing activities (Part 1) and (Part 2) which were much
"Final" until someone takes a GPS reading at the base of his tower and sends me the exact coordinates. This is as close as I can come: http://users.vnet.net/btippett/w3cra.htm 73, Bill W4ZV _________
NM5G: find the difference in phase angle in degrees, then add the appropriate amount of coax to offset the difference. Stacking patterns are not adversely affected by small phase differences. http://
Hi Jim, What do you mean "direction"??? All antennas are assumed to be in the same azimuthal direction. The combined vertical "direction" is hardly affected by small phase differences, e.g. the botto
<SNIP> The advantage of stacks (I'm more familiar with 3 than 2), is matching the primary lobe TOA's of your system to the incoming signal. Nulls and secondary lobes are of little interest since most
Blue is all 3 Red is bottom two Green is bottom one Thanks to W0UN I fixed the syntax of the link:http://users.vnet.net/btippett/terrain_&_toas.htm suppressing the signals (and noise) coming other an
"solid theory" check out this antenna.... <http://www.hamuniverse.com/1elbeam.html>http://www.hamuniverse.com/1elbeam.html hope it isn't intended to be serious! Tom, here's another I recently discove
I don't believe there was any actual problem with the verticals themselves, just the advertising hype... W2AGN: with my Gotham Vertical, ground mounted and NO radials." (The guy no doubt lived in a s
W8BYA: method that would allow me to use a bunch of 7/8" 75 ohm hardline I have. My antennas on 2 of 3 towers require over 270' runs and I would like to use this very nice hardline. On VHF and UHF I
I successfully dismantled N4SU's 25 year old 96' Heights aluminum tower with one exception. The bottom aluminum section seems to stuck at the Steel fold-over base joint. I've searched the archives bu
I actually was trying to save the entire thing since the pipes are part of the fold-over base which is fairly expensive. But you bring up a good point in that I believe the pipes can be replaced by u
Hi Glenn...that's a nice summary ofthe consensus! Will ask Dave's 86 year old widow to have a neighbor pre-treat the joints a few days before I go back up there. Thanks to all for the suggestions and
K3WA: Bill, I've done a fair amount of modeling mountain top locations, both for my W3CRA analysis as well as a potential new QTH I'm looking at. Based on this, I would guess the exact location of th
W8JI: signal levels at all angles decrease. Tom, when I decided to put up a high-angle antenna to complement my 160 vertical, I modeled a droopy dipole (or large included-angle inverted-V) over avera
bottom of the tower, else water freezing might make more cracks lower than the present one. In fact I almost wonder why this is not a recommended procedure anyway. In dismantling N4SU's aluminum towe
W7WHY: using the MFJ-259 for cutting stubs? When all else fails...read the manual (p 20). http://www.mfjenterprises.com/man/pdf/MFJ-259B.pdf 73, Bill W4ZV ____________________________________________
http://www.w8ji.com/mfj-259b_calibration.htm Tom, that has been corrected in the online version. I don't recall it in my '98 vintage manual either so your warning about the 2002 revision sounds right
Both have 1/2 wave booms - 36ft. Tony, the best way to answer your question is to see full curves for Gain, F/R and SWR for both antennas...i.e. modeling. However, if you don't have those, here's my