Come on, gang; What does a callsign have to do with anything other than a being good CW call or a good 'phone call? The only important measure of our Ham Radio 'goodness' is our on-air and off-air sk
Bob's addition of another truism (#4, below) to Jim's original 3 begs a strong caveat: "Correlation is not Causality". While empirical testing is often less expensive and even quicker than analysis,
Guy anchor corrosion was a topic of interest on the "Tower-Pro" reflector a few days ago. It seems that the WXO tower in El Centro, CA. collapsed in a high wind, the cause being a guy anchor rusted-t
"It doesn't appear that there will be much use made of Transistors in amateur work, unless it is portable and/or compact audio amplifiers. The noise figure is said to be poor, compared to that obtain
I think it depends a lot on your insurance company, the relationship you have with your agent and whether there is sufficient loss beyond your deductible to warrant the claim. When we lost 4-5 huge h
No, no, no! You need something with a high iron content like copper-clad. After all, these are Fe-line QUADrupoises; which also means you only need one, especially if you want to minimize the Fe-lin
Yeah. As I recall, the last such thread was triggered by someone wanting to guy a crank-up. It morphed into a general discussion on any guyed self-supporters. As I recall, Yuri finally quenched the i
I don't think we disagree. Your tower manufacturer has evidently done the analysis; mine has not. Therefore I don't plan to guy mine. I'm an engineer, but of the wrong flavor for this discipline, so
Side #1: Do it unless there's proof that it's unwise. Side #2: Don't do it unless there's proof that it's OK. Salient examples of this dilemma where side #1 wins: Jan. 28, 1986; Challenger; seven los
I second the notion of the chainsaw rope. I've used one quite a few times; but there's a knack to using one, and a couple of caveats: 1. Practice a little on one of the lower and straightforward bran
Doug, Check the internal potentiometer resistance reading at the ground as the rotor turns through its full rotation. There should be a smooth change from zero ohms to around 500 ohms measured the be
Having been a Wildlife rehabber for about 15 years (until XYL & I decided to reclaim our lives), I can assure everyone that Herons are not to be messed with without training and eye protection. Likew
Please read the instructions you recieved when initially subscribing. OR...scroll to the bottom of this message (or your own) and click on the bottom-most link. Follow the instructions (I know it's d
John, Take a look at the "All-Band Center-Fed Inverted-L" on L.B. Cebik's website: http://www.cebik.com/wire/ltv.html It's nothing but your Inverted-Vee rotated in-plane by 45 degrees...65+/- feet ho
Yes, but: The donut helps because it spreads the impact over a longer time. Without the donut, the force is applied over a short time after the backlash in the gear train is taken up, and the gears
Steve, I'd start by measuring the resistance of the internal rotor potentiometer at the ground end of the cable. The pot is (at least in my G-800SDX) 500 ohms, measured across pins 1 and 3. The wiper
I'll try to add a little extra clarification (mostly from memory) about the friction clutch: On the input shaft (that's the one with the crank handle) there's a threaded section where one of the clut
KD4E asks: ...."Force 12 is the first manufacturer to provide riveted element construction. The rivets used by FORCE 12 are from the aircraft industry and are called "closed end" rivets, since they a
Very likely. If you do find such a leakage path, before tearing the rotor apart check the inside of the connector at the rotor end. I had a similar issue several years ago with insect trash providing
Another related implementation was the extendable antenna on the Canadian "Alouette" Satellite in 1962: http://www.nrc-cnrc.gc.ca/education/innovations/sti-inno-stem_e.html This antenna used a S.T.E.