Near salt air? Here along the eastern coast, salt air affects crimped connectivity over time unless Coax Seal or a variant is used. The problem is never the center conductor, but with the braided po
Mark, For RG-400, I've been using crimp PL-259s from RF Industries and purchased through Tessco and RF Parts: https://www.rfparts.com/rfu505-c1.html Paul, W9AC --Original Message-- From: TowerTalk [m
Positively depressing, Ian. If we can achieve reasonable, albeit not perfect line balance, does it really matter? Consider a wire dipole strung between two tall trees and fed with open wire line str
afraid the two-ammeters method is only the roughest of checks. Because it only measures the overall magnitudes of the currents in the two legs, it is only capable of detecting gross levels of unbala
Court House back in 1953. We were both very young teenagers. My OM, W9EAC would have just preceded you in 1947 while living on the south side of Milwaukee. My first recollection of the Milwaukee sto
the labor force," 9.7 million of them are between 16 and 19 years of age. Another 5.7 million are between 20 and 24. And 37.8 million are age 65 and over. (In fact, 17.5 million are over 75 years ol
It's looking more probable that the remote Internet site built last year by N4CC and myself will require a complete move about a half-mile down the road. Assuming this is the case, I want to pay part
rebar is spec'd for welding, which most are not" No idea, but Erico sells many forms of Cadweld shots that are designed to bond coper wire with rebar. Anyone know the answer? Is there a special form
Happy/Sad at the same time. Would like to the committee explore the Ohio State Fair Grounds in Columbus or better still, a venue in Cincinnati (my favorite U.S. city). Paul, W9AC Dayton hamvention ne
N4CC and I are gearing up to move our remote internet station about a half-mile down the edge of the Okefenokee Swamp. The move is a big hassle but topography is even better than the current site. A
Line V(Peak) = [sq. rt. (Pwr*system Z*SWR)]* 1.414 Paul, W9AC No, there is no such thing as peak to peak except on the scope screen. You want to use peak values to figure the protector voltage. 73 Ga
Free to a student or school: ARRL Antenna Book, 20th ed. with CD-ROM. I'll pay for direct USPS Priority shipping to the student/school, or I'll ship to you and you deliver it. Please reply direct. If
With tough-to-ignite one shots -- like when the igniting powder layer accidentally mixes with the burn powder, I've used kid's sparklers with 100% success. Common sense safety precautions apply: use
Xc=1/(2*Pi*f*c) For 1825 kHz, C = 628 pF, leaving 41.2 +j0. But, that doesn't get you to Zo = 50. But this does... Hi-Pass L option: 285 pF series C with 6.1 uH shunt across Zo=50 input side; loss =
P.S. Unless you really need a flat 1.1 SWR, then just use series C of 628 pF (1825 kHz). That eliminates the L. However, adding in L, or at least accommodating it in your layout does help if you plan
Yesterday, I just poured nearly 40 sq. yards of concrete (4 concrete trucks) in preparation for moving two self-supporting Pirod towers. One tower is 140ft., the other is 100 ft. When the contractor
Thanks to all who replied by private e-mail. Many folks suggested using a concrete cutter to trim the base edges square. Yesterday, I went back out to the site and took some measurements of the leg b
which may help to keep the concrete from cracking. Howard WA9YBW" Great idea from you and others. Many thanks. Paul, W9AC _______________________________________________ ____________________________
A myth equal to that of all vertical antennas being poor radiators in all directions. Of course, verticals are often poor radiators when the other half of the antenna is missing or there are appreci
N4CC and I will soon be grappling with the same issue at our remote Internet site. We recently purchased the DXE-4SQ 80m package with Phillystran support cabling. The 4SQ will surround a 100 ft. self