The W6NL(ex-W6QHS) book does not contain the current methodology either, it was published prior to Dick Weber's paper. But, it is still a great source for all kinds if valuable information, like win
40 meters? Hi Wes, I have had a 40m 4 sq with Comtek box and 240 radials for 3 years and it works very well. Yesterday, I put a 40-2CD up at 50' on an AB577 and A/B'd the heck out of it to US, EU, J
A properly rigged block & tackle system will reduce gin pole loads (or increase safety margins) as long as the load does not wander "too far" away from the pole. There is a little bit of info, at th
< I need to locate a bearing for a prop pitch motor. The bearing is a MRC G 203 R1. MRC has ignored my e-mails. Detroit ball bearing does not have one. This bearing goes on the low speed hub in the l
As the antenna(s) are raised above the tower top, the allowable antenna projected area is reduced below the area allowed at the tower top. It's also covered in the 19th edition of the ARRL Antenna Ha
Here's a blast from the past! Some guys are really slow.... Maybe, I'd watch out for that guy..... Herd that dude's cape got fetched up on a defective coin return slot in the phone booth, OSHA is loo
Hi, I would give some thought to that antennas boom torque imbalance problem when pondering the plate failure. The imbalance is a fairly consistent feature in those old KLM antennas. Asymmetric eleme
I prefer the anhydrous lanolin I got from my pharmacist. A similar product called Lanacote (just more $) has been used for ages in the marine industry. A 1 lb jar($12) is a lifetime supply and it doe
Hi Gary, Dan's answer about using the "round" tower area rating for cylindrical antenna members is right. You don't want to be using that old 9.4 sq ft "effective area" for the TH7. You want to use t
Barry, You had it right, 11.5 with the antenna pointed into the wind (elements broadside), 4.1 with boom broadside. Which of the two numbers depends on how clever you think you are. If you have desig
Guess my response to this got bounced by the semantics police....take two. Response: Barry, I think you have it right, 11.5 with the antenna pointed into the wind (elements broadside), 4.1 with boom
I put the ScothKote in between the first and second tape wraps, past the first wrap (2") onto the coax jacket. Let it dry till slightly tacky before the second wrap. Works fine, bomb proof seal, no U
I haven't seen the wording of the new Yaesu method of calculating the K value including the mast. The mast is not currently in the description on their website. However it says it should be done is h
Hi All, Just to clarify a few things.... I think there may be potential for a bit of confusion about what various people mean when refering to "a pier pin" base. The text referred to here, was in the
As Hank pointed out, both bases are pinned in a strict sense. The moment I was referring to is not developed by any fixivity to the footing, but by not having all three legs sharing the axial load. I
Hi Steve and All, The larger towers in the Rohn commercial catalogue use only a tapered base section and a bearing plate between the tower and footing that is machined so it has a small diamaeter und
Don't forget to think about what's happening when the antennas are broadside to the wind. The common practice of attaching a mast at the center of gravity of the antenna, is quite convenient for han
Sounds like you have it covered Gene! Except, that the mention of element compensators smells like some old world thought, which would be incorrect in light of the information you have shared. So, my
Your probably right George. I think there is plenty of evidence around that the rotator has a problem with the brake mechanism. I don't think that can be easily corrected. The one here is flawless in
Hi Tom and all, Remember, when evaluating the true effect of the "reduced load" on the ginpole, that if the load is not directly below the pole, but creates a small angle between the line and the po