I’m either in my shack or in the mountains (or posting here)

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Alt posting account: @[email protected]

  • 16 Posts
  • 23 Comments
Joined 1 year ago
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Cake day: June 12th, 2023

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  • “Allowed Hosts” is white listing btw. You should leave it blank if you want more than just lemmy.world and lemmy.ml

    And I wouldn’t say it reduces the load on those sites. It would kind of add to them in a way if you post from your instance or sub from your instance solo. If it’s just you on your instance, it’s barely a blip. May save them some photo hosting if you post.

    SOME of the out of sync upvotes/comments are fixed in 0.18.1




  • 1: What is the implication on radiation/reception pattern of ground plane radials above horizontal?

    The angle has an affect on the impedance. So if it was angled up 45*, you’d be “shortening” your antenna.

    2: Does SWR being lowest with “inverted” radials indicate that the radials are too long?

    A guess at this would be that if you’re getting fair SWR with your radials at 45* above the plain, then your antenna is too long.

    3: Is ground plane radial length measured from the attachment point…

    Yes, the attachment point or “feed point”

    Antenna’s are black magic :)

    If you’re wanting to really find out where things are being thrown: trim the correct length for the 1/4 wave you’re making then start with the desired angle (45* down is pretty standard for a 1/4 wave) for the radial but add a bit more length than your calculations show, then slowly trim down and test using your meter. Also when you’re testing, make sure there’s no other kind of interference above the radial plane. I’ve had that bite me in the ass.