Replying to
@scott
Every antenna is a dipole. Except dipoles.
Remote
Joe
@Geojoek@mastodon.hams.social
mastodon 4.5.18he/him
Careless WSPRs
This is my ham radio oriented account, but I also use it to follow photographers, cats, and other nice folks.
Posts set to Followers Only, and autodelete after 1 week because of Meta and other places using this server to train their AI.
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Joined November 25, 2022
Replying to
@W1CDN @scott
My end fed as it stands is ~1/2 wave on 80 (and hence does not tune without a transformer) and a 1/4 wave on 160.
I just can't find a good resource on exactly where to place the trap and from what I'm reading it's related to the frequency but no place I'm reading lists a formula. Unless I am incredibly thick today. (I'm thicc everyday but also thick today).
Replying to
@W1CDN
I want to try it! It’s just in typical ham fashion the literature out there is so horrible for anything but building a short, trapped, dipole with inefficient air coils, or diving super deep into theory of how traps work. So far I’m batting zero on how to calculate where to put the trap (apparently not right at the quarter wave), what ferrite mix to use, how many windings, etc.
For unburied radials resting on the ground at a semi-permanent installation at the QTH, is there any particular reason to *not* use bare steel wire (i.e., electric fence wire) as opposed to insulated copper?
jorts?
Blorp
Unknown mineral, likely some sort of weird-ass amphibole because rocks in New England sure love to form weird-ass amphiboles. This is in a layer of "dirty" marble from a boulder of the local Waits River Formation, which is metamorphosed and deformed small ocean basin: deep sea muds (now gorgeous phyllites and schists) on one side of the basin. Grungy-ass interlayered carbonates, mudstones, garnet-bearing schists, and quartzites on the near-shore portion of the basin.
Folds for @tsherrygeo@m.ai6yr.org from locally-derived boulders.
Believe it or not, the first photo is basalt... deconstructed by melting during subduction into tonalite + amphibolite. Things got Hot To Go.
Are trapped end-fed random wires a thing? Can't find any examples of them (only for trapped dipoles).
Would solve my 80m vs 160m problem.
Replying to
Replying to
@NilaJones
Thank you so much! And thank you for a link: most of what I've seen is people saying "it turns out they don't work" without providing any source for that.
@DenisCOVIDinfoguy @mindy @melinaborcak
Replying to
@TheTomas@social.toot9.de
LOL I came here to make this Debian joke.
("The distro for people who grunt getting up out of a chair.")
@GossiTheDog@cyberplace.social