(bout the find off "jam If you think about it, this accomplishes nothing that a bolt would not accomplish in the same application. The second nut does nothing more than make the first nut "thicker".
not No, it doesn't. So, there... ;-) My bolt has exactly the same holding force on the lockwasher/captive plate as your double nut scheme does. You claim the second nut keeps the first nut from loose
Steve, I've spliced a *lot* of 1/4" superflex using one technique, and it should work for 1/2" heliax. Go to the hobby shop and get a short length of brass tubing that just fits over the center condu
If money is no object, connectors or in-line splices are a good solution. Above HF, perhaps the only "good" solution. In my case, I had a bunch of 50-60 foot lengths of 1/4" superflex, and I needed t
Yeah, yeah, yeah... It will not be correct, but it works just fine at HF, thank you. 73, geo - n4ua In the cell industry there is two splices on every run. Usually 1/2" jumper from the cabinet to the
That particular thrust bearing implementation has been around for at least 40 years; its performance and flaws are well documented. It's highly unlikely that anyone still associated with its manufact
Yo, Jim! 45G is NOT swaged, and it's 70 #/section. 73, Geo - n4ua Yo, Crazy! You're not getting it. 25g and 45g are identical in design. The difference between them is that 45G has an 18" face, and 2
Hi Scott, I have been doing a lot of HFTA'ing recently, doing analysis for a planned third tower. I look at the program as a statistical tool, far more important to a contester than a DX'er. It gives
Has anyone successfully downloaded map information (for HFTA) in GeoTIFF format from seamless.usgs.gov recently, like this week? I have been trying all week to get a download, but the process always
73, geo - n4ua I associate cage-dipoles with Sovjet-Russian diplomatic wireless systems. The embassy in Oslo used to have a big one on their roof and I was told by a local "guru" that the point with
For LMR-600 (and 400), I use a Daniels HX-4 crimp frame (see Tessco 10813) with the right die set. It makes 600 painless. Spendy when new, but often available at hamfests and on *bay. I have a couple
Probably a typo in your email, Art, but I presume you meant feet, not inches ;-) 73, geo - n4ua That's easy Brian. If the boom to mast is at the center of the boom, then one has 10.25" on that side
The hot-dip galvanizing process starts with a degreasing tank, rinse, then acid dip to remove rust, mill scale, old galvanizing - and aluminum rivets! Next, another rinse, and then the molten zinc ta
And there's a flux tank just before the zinc dip - forgot about that one. 73, geo - n4ua The hot-dip galvanizing process starts with a degreasing tank, rinse, then acid dip to remove rust, mill scale
Does anyone know who makes the NEMA-4 sealed plastic enclosures that Array Solutions uses for their baluns? 73, geo - n4ua -- This message is for the designated recipient only and may contain privile
Chris, I think you will find that Rohn was only referring to "their" thrust bearing, the TB-3 family. There are other bearings and bushings used, and often required, in antenna installations that che
Pete, Depending on how much damage there is, you might be able to fix it. It's a "single-flute" cutter, so there is only one cutting edge. If you just rounded off the leading edge of the cutter, you
You will still lose torque with a pwm light dimmer. You will need something like an variable speed drive, where you vary the drive frequency and voltage simultaneously, essentially synthesizing a com
Yes, it is good practice. A thin layer is all that is required; just about as little as you can smear on. I use the stuff sold at Lowes and other electrical distributors for bolted aluminum connectio
Shameless plug: If anyone is interested in a good cable-entry device, I have listed one on QTH.com. Search for roxblox. I used them on the cabinets at the base of both towers, and also on the cabinet