One of my two drum bearings on my old style UST HDX-689 has 2 x huge cracks on the very end of the flange, where the 5/8" bolt hole is. These 2" drum bearings look almost identical to the 2" mast bea
I have a prop pitch rotor I got from another ham but has no provisions for direction indication. I've heard about selsyns but I believe they require gearing to couple to the mast. His setup didn't ha
Roger, I believe the best solution is to buy a Green Heron Engineering/K7NV control box. Their indicator system uses a stationary reed switch and a magnet that is on a piece that is mounted to the bo
--Original Message-- From: Jim Hargrave <w5ifp@gvtc.com> To: hanslg@aol.com Cc: towertalk@contesting.com Sent: Wed, Nov 10, 2010 8:54 am Subject: RE: [TowerTalk] Fwd: Adjusting a Gamma Match on a Ya
It looks like it should be usable outside, but seems kind of expensive and lossy. David Robbins K1TTT RG-213U on HF. IF your requirement is for rotor loops that will handle 10-25 kw, and swr, and has
Does anyone know why US Tower now has a snow or ice warning on their website? http://www.ustower.com/subpages/ham-towers.php Jim N7US kicker is the cables are under constant tension, even if the towe
I'm helping a friend who has an 80 meter 1/4 wave vertical. At the top, he has a 160 meter trap then a wire extending horizontally for 160 meters. It is therefore an inverted L on 160. The SWR on 80
&&& superb idea! Take the last rotor plate, or one rotor plate that is easy to get to, and fold a short, perfect 90 deg to it. Then when fully meshed, the 90 deg lip will contact the mating stator pl
Hi All...I'm having a hell of a time trying to match a pair of 40 meter M2 4 ele beams..both antennas have 1.5 swr or less at 7.150..high or low..switching to both it goes up to 2.1 swr..I'm using a
It looks like the acquisition of Cruhcraft by MFJ Enterprises was a will balanced purchased of another moderately dysfunctional company. I can only hope as these companies become assimilated into MFJ
If you are thinking about electrical effects what is your concern?That the Hytower will affect your Yagi or that the tower will affect the Hytower. The Hytower is vertically polarized on all bands. O
Come on gang lighten up. MFJ is still a small company. Martin Jue and Steve Pan (the management) are trying to do a good job. I am surprised that with all the acquisitions they are able to keep up. m
I use a Stackmatch to feed dissimilar antennas in order to spray RF in two directions. For example, during this past Sweepstakes, I fed a tribander at 60' pointed NW along with a different type of tr
I immediately thought of putting up a HyGain 6M antenna, so I called Burghardt's and they sent me one right down. The antenna LOOKED just like the ones made in Lincoln so I proceeded with the assembl
and I tested it out thoroughly during the Sweepstakes contest this weekend. In nearly all cases, BIP was better than BOP so I rarely used BOP. QSL that. If you've ever seen Bob Heil's presentation on
MFJ gave me 2 tuners and 2- 811h amps when i went to KC4 in 92 .. the amps worked but gave a lot of problems while we were in VP8 so we did go inside and fix a few problems before we left Stanley. go
&&& True...BUT.. the only thing that ever gets plugged into either the YS 2.15 or DX eng spreadsheets [ and also the ARRL mast program] is yield strength and section modulus. Section modulus is just
I think that's a general problem in the ham radio equipment world. There's no "real" objective definition for "handles 1.5kW"... is that 1.5kW into any load? 1.5kW into a matched load? 1.5kW when imm
Wow Rick! That is really amazing? You ever think of getting a decent receiver? For the past 59 years I have used a 'tuner' and wires, but alas, using wire antennas and I've only got 327 countries con
I drove in 4 x 8' copper clad steel grnd rods a few years back. We used a rented electric jack hammer. The trick is, for driving in grnd rods, you require the special attachment piece, instead of the