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The Strowger Appreciation Site edit / delete
A collector who owns several telephone exchanges, among other things. He's recently restored the Glen Prosen 1950s exchange, which had apparently been sitting in a hut at the top of the glen until 2009 or so...
to aerial clock electronics retrotech telephone tv ... on 26 June 2018
Mounting A Terrestrial TV Aerial In The UK - 3 Aerial Alignment Calculator (with internet mapping) edit / delete
Does exactly what it says.
The Ultimate Guide to 11 Meter CB Antennas edit / delete
A surprisingly good reference to antenna design from an "11 meter" enthusiast. (This being one of those bands that has wavelengths long enough to make antenna design nontrivial, but not so long that you're always compromising...)
EH antenna homepage edit / delete
More analysis. The basic stuff is interesting, but then it... stops.
to aerial amateur eh hf microvert radio small-aerial ... on 09 January 2010
Radiating feeder: Applying a theory. edit / delete
More Microvert/EH analysis, with suggestions on taking advantage of feedline radiation.
to aerial amateur eh hf microvert radio small-aerial ... on 09 January 2010
The DL7PE-MicroVert edit / delete
Another small HF aerial design, but this one's explicitly designed to use the download as a counterpoise. This appears to be the approach that Firestik's no-ground-plane antennas use. The PDF gives all the design equations, which is nice.
to aerial amateur hf microvert radio small-aerial ... on 09 January 2010
Modelling EH antennas using SPICE. This produces some interesting results.
to aerial amateur eh electronics hf isotron modelling radio small-aerial spice ... on 09 January 2010
Building EH antennas from the sort of "components" that, say, Wilkinsons sell. (And more speculation about how they work.)
to aerial amateur eh hf radio small-aerial ... on 09 January 2010
Site of Lloyd Butler VK5BR edit / delete
And this is someone who has some serious clue about antenna design playing with the EH/Isotron approach -- on the X2/X3 pages, he's doing experiments to figure out how it actually works, and what you need to do to make it work well. The results are nonobvious.
to aerial amateur eh hf isotron radio small-aerial ... on 09 January 2010
L'ANTENNE ISOTRON edit / delete
Right, this is more interesting: this guy twigged that the Isotron and EH antennas look like they're operating on similar principles, and came up with a simpler design drawing on both, which can be homebrewed with some plastic pipe and old hard disk platters (!). Looks like it works well. There's a PDF here giving simple instructions for building the CB version.
to aerial amateur cb eh hf isotron radio small-aerial ... on 09 January 2010
« earlier | later » Page 1 of 3
- aerial | |
11 | + amateur |
7 | + antenna |
1 | + broadcast |
5 | + cb |
1 | + clock |
8 | + eh |
6 | + electronics |
8 | + ham |
11 | + hf |
5 | + isotron |
1 | + maps |
3 | + microvert |
1 | + miniwhip |
1 | + modelling |
1 | + packet |
20 | + radio |
1 | + retrotech |
11 | + small-aerial |
1 | + spice |
1 | + telephone |
2 | + tv |
tasty by Adam Sampson.