Tessco has great pricing if you have a gold account. Otherwise , they're $10 ea. Here's an alternate source: http://tinyurl.com/4crbnel Paul, W9AC _______________________________________________ ___
Ian, Trouble is -- those of us on this side of the water, for one reason or another, will have difficulty in purchasing those European compression connectors. Absent a North American distributor, we
Ian, We may be getting closer to finding "the real deal." Looks like Farnell/Newark may have them in stock for U.S. orders: http://tinyurl.com/4vk83dy Does the datasheet/drawing below appear as the c
It would be interesting to review the source article by Varney, entitled "An Effective Multiband Aerial of Simple Construction," RSGB Bulletin, July, 1958, pp. 19-20. By 1958, the 15m band should ha
A few weeks ago, Ian, GM3SEK suggested looking into a clamp-type UHF/PL-259 connector (not crimp) that offered easy assembly and a weather-resistant backing for outdoor installations. The only solder
Good observation, Ken and it's something I've struggled with since I began using LMR400. Also, the soldered clamp type UHF that I installed today would not accommodate LMR400 until I routed-out the
Joe, You may want to order one or two at first and determine if it is a one-step prep process (if important to you) that includes a flanged ferrule like the Multicomp connector. The flanged ferrule i
I had the MaxGain 40 ft fiberglass masts and although they are rugged, they are also very heavy and don't collapse down into a convenient size. I replaced these last year with Spiderpoles. The Spider
The only other current design on-par with the LP-100 is the Alpha 45xx series, although the Alphas do not offer complex impedance measurements. However, both units offer exceptional directivity as we
The LP-100A has an "Amp Tune" mode that can be accessed with one button push. The PowerMaster is certainly a nice wattmeter -- but it is not designed with the accuracy (particularly at low power leve
Good point. I think most broadband antennas are/were designed for military service where they can be deployed quickly by personnel who do not have an understanding of VSWR, matching, and tuning tech
Or, create a knife switch with a pair of vacuum relays outside the house entry. I use Jennings 75 amp relays, automatically powered from my remote antenna tuner. The relays can be configured to clos
I just modeled a 10m four-square in 4Nec2. I used 60 #14 AWG radials 5/8-wave long over average soil, and 5/8 wave radiators. The F/B is terrible at 1/4-wave spacing. At best, it's about 12dB at an e
Jim, NEC/2 input file below. Make your edited changes in a reply. I'll run your model and post the results. (len)gth and (sp)acing units below are in feet. "0.0625" below refers to element radius --
Roger, 5/8 wave radiators are *not* popular with AM broadcast stations. In fact, the 185-195 degree class of radiators used by WSM, WLW, and many other clear channels was so chosen to specifically el
Jim, being the same for each source. No? I would really welcome input on this from you or anyone else with a better understanding of the NEC internals. I see no other way to specify separate radial
This evening, I took a quick look at the radiator height of some of the major AM broadcast stations in the U.S. Data was taken from the current FCC on-line database. Notice that radiator heights rang
Here's the Brittish patent by C.S. Franklin: http://www.aktuellum.com/circuits/antenna-patent/patents/242342.pdf There's aren't many commercial Franklins around due to the serious amount of steel an
Tony. As Mickey states, there does not appear to be a specific regulation for Putnam County. I would be very surprised if they did. That area is one of the least regulated in the state. Also, note th
How are you defining the terms "tuned," and "matched?" What is tuned and what is matched? How is your use of "tuned" different than "resonant?" Your antenna in this example is not resonant at the an