Yesterday we had a severe thunderstorm episode, with significant cloud-to-ground lightning nearby. All my coax and control lines were disconnected, but when one particularly close strike occurred, an
Repeat after me -- LIGHTNING IS NOT A DC EVENT, IT IS AN RF EVENT. Write it 100 times on the blackboard! :) That choke only discharges DC. 73, Jim K9YC made that comment. floating.. and not grnded [l
I don?t think it is a good idea to use saddles with teeth. Those will saw through the tubing on the long run. they won't bite into the mast anyway ! You have the same problem with the fubar mast clam
Anyone know of any sources for aluminum boom material (2 and 3 inch) in the southeast US, specifically Florida? Bill KH7XS 2"-3"-4" diam.. and all of em came in 20'-30'-40' length's. Back then, I wan
Another suggestion. run 20A circuits (#12) for anything that may get a lot of electronic stuff plugged in, with a dedicated neutral for each circuit. For long runs, pull in #10. If you do the math, y
Hi Bill, Will be looking forward to your return. I purchased mine through Florida Power. They mount it behind the electric meter. It has two led's to monitor the line which you can see. If at any poi
Some observations: Another observation: One contributor questions what feed thrus are available for LMR 600 size cable. LMR 600 can be terminated with UHF, N's or DIN males and suitable female/female
pole. The 4"/5" cut off wheels will fit an angle grinder... but were not deep enough to cut the 1/2" bolts. [Previous owner had used 1/2" bolts to bolt 2" angle steel to the sides of 4" OD pipe... an
In a 3-phase system, any harmonic whose number is divisible by three will ADD in the neutral rather than cancel. That's because the three phases are displaced by 120 degrees at the fundamental, and t
Unfortunately in this case the 'bleeding' when there is a charged cloud over head is putting charge ONTO the antenna from the ground to equalize it with the rest of the charge being attracted to the
Yes, you are right, a three phase system aggravates the problem but it is also present on on split phase feed. Worst case probably never happen, but my house in Brooklyn receives its power from a gig
The neutral for premise distribution is created at the utility transformer secondary. Speaking of electrical distribution and use of neutrals, this evolution of plant step-down architecture has alway
town is all on poles. My drop wire is a mid span drop...between 2 x poles. Since that neutral goes to all 9 x homes.. and the neutral [ CT of xfmr sec] is also bonded to the MGN, via a short loop on
Anybody know what the typ price of this stuff is ?? RFS makes 'ultraflexible' 7/8" heliax... using corrugated copper center conductor.. and a corrugated copper outer conductor. Their latest version u
What happens to the other 8 homes mains voltage if you fire up that YU148? 73 Peter the same thing. Their answer was... "go ahead and burn it right off the pole" . Here in NA, we are being sold a bil
The grid chokes in my TL-922 were replaced with 10 ohm resistors by the previous owner. The amp works fine except on 10 M where the resistors go up in smoke within a few seconds. This bring up severa
Better to be safe, I have tried several different brands and use the Elk River Tower harness with a spreader between the waist D rings and have a lanyard to attach for fall protection. If you want t
I have an AN Wireless HD-70 freestanding tower with the foot pegs ... slippery enough to require caution when wet, but not treacherous. I climb with a full body harness with two relatively short safe
My hesitation in buying the safety cable was simply that I didn't want to trust my life to a spring gripping system I suspected I wouldn't be able to see (I've never seen one in person so I wasn't ce
I'll add my comments which agree with the others advising you NOT to mount the relay box 80ft up the tower. I had to climb my tower once at dusk during the CQWW CW contest to swap out a failed relay