programming.dev
  • Communities
  • Create Post
  • Create Community
  • heart
    Support Lemmy
  • search
    Search
  • Login
  • Sign Up
Matt Blaze@federate.social to Photography@fedia.io · 7 months ago

KNBR (AM 680) Antenna, Redwood City, CA, 2024

fedia.io

message-square
25
link
fedilink
  • cross-posted to:
  • [email protected]
  • [email protected]
10

KNBR (AM 680) Antenna, Redwood City, CA, 2024

fedia.io

Matt Blaze@federate.social to Photography@fedia.io · 7 months ago
message-square
25
link
fedilink
  • cross-posted to:
  • [email protected]
  • [email protected]

KNBR (AM 680) Antenna, Redwood City, CA, 2024

Very tall pixels at https://www.flickr.com/photos/mattblaze/54131419266

#photography

  • vxo@digipres.club
    link
    fedilink
    arrow-up
    1
    ·
    7 months ago

    @[email protected] oh that’s a funky antenna! Most AM antennas aren’t that intricate.

    Apparently that’s a “pseudo Franklin” design (I’d call it more like a collinear) with a capacity hat.

    KFBK Sacramento has the only true Franklin antenna design on an AM station in the USA and it’s reeeeeally funky looking. It does with two towers what some more conventional AM directionals take four to EIGHT to accomplish. It’s kinda boss.

    • Matt Blaze@federate.socialOP
      link
      fedilink
      arrow-up
      2
      ·
      7 months ago

      @[email protected] Yeah, KFBK is on 1530, making it at least possible to build a full Franklin antenna (2 half wave verticals stacked atop each other - a full wavelength!)

      • vxo@digipres.club
        link
        fedilink
        arrow-up
        2
        ·
        7 months ago

        @[email protected] I wonder if the original Ampliphase development/test transmitter is still there. It’s my understanding that their daily driver is a Nautel

        • Matt Blaze@federate.socialOP
          link
          fedilink
          arrow-up
          1
          ·
          7 months ago

          @[email protected] Wait, which station? KNBR is (according to their license) a Gates.

          • vxo@digipres.club
            link
            fedilink
            arrow-up
            1
            ·
            7 months ago

            @[email protected] oh I was talking about KFBK. At least as of 2009, a Nautel (not sure what model but the front panel reminds me of the V series?), a Harris DX50, and the RCA Ampliphase TX appeared to live there.
            https://www.youtube.com/watch?v=97F9TO0yBNU

            • Matt Blaze@federate.socialOP
              link
              fedilink
              arrow-up
              1
              ·
              7 months ago

              @[email protected] Neat!

Photography@fedia.io

photography@fedia.io

Subscribe from Remote Instance

Create a post
You are not logged in. However you can subscribe from another Fediverse account, for example Lemmy or Mastodon. To do this, paste the following into the search field of your instance: [email protected]

All things photography. Share your own original photos, your questions, your inspiration.

Rules

Share your own original photography. No NSFW images. Be Nice.

Visibility: Public
globe

This community can be federated to other instances and be posted/commented in by their users.

  • 48 users / day
  • 376 users / week
  • 694 users / month
  • 2.26K users / 6 months
  • 4 local subscribers
  • 0 subscribers
  • 1.58K Posts
  • 3K Comments
  • Modlog
  • mods:
  • photography@fedia.io
  • BE: 0.19.11
  • Modlog
  • Legal
  • Instances
  • Docs
  • Code
  • join-lemmy.org