I have several PL-259 and SO-239 connectors that I acquired in the 1970's. Also a number of male-male barrels, female-female barrels and 90-degree male-female connectors. Do these type of connectors
Steve, Thanks for the info. Allow me to press my luck with a further question: How does one discern the difference between the connectors which are silver plated and those which are otherwise plated?
Thanks everyone for the advice and information. Sorry to take a few days getting back to this, was distracted by another (radio) project. Most of my old connectors are evidently silver plated. Their
I bought a CDE Ham II rotor in 1976, used it for about five years and removed it from service with the intent of getting my beams back in the air in short order. I replaced a few parts in 1981 and lu
Thanks Bill and also Brad, W9FX, for the advice. The lubricant is smooth and slippery, no grit or caking. I'll take that as a good sign and go with it. 73, Steve Bill Coleman wrote: On May 10, 2004,
I'm considering installing a roof mounted tower such as those sold by Glen Martin Engineering. It seems likely that I'll sell this house in a few years and, at that time, remove the tower. Following
Several of you were kind enough to help me a few weeks with a question about a CDE HAM II rotor. Now I have another issue and thought I'd try my luck again. I bought this CDE Ham II rotor in 1976, us
A number of you responded with helpful suggestions regarding the problem outlined below. My thanks to all, your advice is invaluable! It is almost certain that the meter is sticking. I haven't had ti
I've been playing around with the HFTA software that comes with the current edition of the Antenna Handbook. The Help recommends use of a GPS receiver to determine lat/long for the site under analysi
I appreciate the helpful replies to my inquiry regarding GPS receivers, some to the reflector and others directly to me. Perhaps I should have been more specific regarding what I hope to accomplish w
I have 80 and 40 meter dipoles on a common center insulator. They are fed with about 60 ft of open wire transmission line whose characteristic impedance is about 500 ohms. I'd like to use this antenn
The antenna analyzers one finds marketed to hams all seem to have an SO-239 connector. Can one use these devices with antennas fed with parallel conductor transmission lines such as open wire or ladd
Hi Jim, Thanks for the insight. Any idea of what degree of inaccuracy might be introduced by the parasitic asymetric capacitance in the HF range if one were to connect ladder line to an analyzer's SO
There is a review of antenna analyzers posted on the ARRL web site, it will be published in the April QST. Have been thinking about acquiring one of these analyzers. I've seen postings from time to t
I've tried several times since Steve sent this note but have not successfully registered for a catalog. Anyone else having problems or is it just me? I get "The page cannot be displayed" error with I
I'm thinking about constructing some open wire transmission line, probably 70-80 feet in length. Probably #10AWG or #8AWG soft drawn copper. L. B. Cebik's web site http://www.cebik.com/gup/gup31.html
Given two air-wound coils mounted concentrically . . . the shorter outer coil is centered length-wise over the longer inner coil . . . all the dimensions such as coil diameters, lengths and turns per
Hi Rick, Thanks for the info, I thought the methodology existed but didn't immediately find it. Appreciate the offer to scan and send but I don't think it will be necessary. Jim Lux, in an off-reflec
Thanks Tom. I do have a couple of ARRL Antenna Books from the 1950's and there's a good bit of info in them. Also on L. B. Cebik's web site. I'll keep an eye out for the vintage handbooks you suggest
I have recently acquired a used Johnson 153-6-1 air variable capacitor for use in an antenna tuner. Looks to be in pretty good condition, but it does not turn as freely as one would expect. Is it lik