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July 7th 2025 #259 - Slot antennas, lightning protection, and ham travel ops | W3GMS Workbench

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Manage episode 493376723 series 3669859
Content provided by Dylan K3DZM. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by Dylan K3DZM or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://podcastplayer.com/legal.

Host: Wayne, KC3SQI
Topic Focus: Slot antennas, lightning protection, and ham travel ops
Location: W3GMS 146.985 MHz Repeater – Parkesburg, PA (PL 100.0 Hz TX / 94.8 Hz RX)

🧵 General Highlights

  • Warm welcome to new and returning stations like Phil (KA1PXZ) and visitors from Vermont and Massachusetts.
  • Field Day leftovers: Many ops are still packing up, sorting gear, and requesting photos for compilation.
  • 13 Colonies Contest: Several participants shared their clean sweeps, and a few worked the bonus stations.
  • Slot Antennas 101: A spontaneous deep dive sparked curiosity, explanations, and offers of hands-on help.
  • Lightning safety practices discussed, including the limits of grounding switches and the effectiveness of storing coax ends in glass jars.
  • Antenna modeling and compatibility in EasyNEC touched on stacking, vertical and beam interactions.
  • Traveling with ham gear: Helpful tips for scanning, repeater book use, RT Systems programming, and managing expectations on repeater activity when away from home.

❓ Workbench Questions

🛠️ What is a Slot Antenna?

  • Bill (KC3OOK) asked for a plain-language explanation.
  • Contributions from Ron (WA3VEE), Chuck (NA3CW), Harvey (3NZT), and others clarified that:
    • Slot antennas radiate perpendicularly to the slot.
    • Used frequently in radar and stealth installations.
    • Designs can be compact, mobile, and stealthy.
    • John Portune (W6NBC) is a go-to source with QST designs and build guides.

⚡ Lightning Protection & Coax Handling

  • Several operators offered insights:
    • Disconnecting antennas outside is best.
    • Grounded coax switches help with static but won't prevent damage from a direct strike.
    • Putting coax ends in a mason jar might contain sparking—but not useful for a direct hit and may be dangerous.
    • BlitzBugs, polyphasers, and physical disconnection are the gold standard.

📡 Modeling an X-300 Vertical on Top of a Hex Beam

  • Wayne (KC3SQI) asked about modeling in EasyNEC and whether stacking the X-300 above a hex beam would interfere.
  • John (WA3KFT) noted he’s had directional beams and verticals near each other without noticeable interaction.

🚗 Ham Radio While Traveling

  • Chris (KD3EMS) asked how others handle ham radio on the road.
  • Suggestions included:
    • Use of RepeaterBook mobile app.
    • RT Systems or CHIRP for programming based on trip routes.
    • PL tone scan to identify unknown repeaters in real time.
    • Accept that most repeaters are quiet, but local nets can be an inroad to friendly chatter.

🎤 Notable Mentions

  • Phil (KA1PXZ) heading to Sussex and maybe activating some POTA sites in Shenandoah NP.
  • Ron (WA3VEE) completed another 13 Colonies clean sweep and invited members to share Field Day photos.
  • Chuck (NA3CW) refurbished a classic tuner with new paint and bearings.
  • Harvey (3NZT) offered Bill a custom-built slot antenna to experiment with.
  • Chris (KD3EMS) excitedly shared success hitting the ISS and SO-50 satellites—impressed at how approachable satellite ops can be.
  continue reading

6 episodes

Artwork
iconShare
 
Manage episode 493376723 series 3669859
Content provided by Dylan K3DZM. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by Dylan K3DZM or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://podcastplayer.com/legal.

Host: Wayne, KC3SQI
Topic Focus: Slot antennas, lightning protection, and ham travel ops
Location: W3GMS 146.985 MHz Repeater – Parkesburg, PA (PL 100.0 Hz TX / 94.8 Hz RX)

🧵 General Highlights

  • Warm welcome to new and returning stations like Phil (KA1PXZ) and visitors from Vermont and Massachusetts.
  • Field Day leftovers: Many ops are still packing up, sorting gear, and requesting photos for compilation.
  • 13 Colonies Contest: Several participants shared their clean sweeps, and a few worked the bonus stations.
  • Slot Antennas 101: A spontaneous deep dive sparked curiosity, explanations, and offers of hands-on help.
  • Lightning safety practices discussed, including the limits of grounding switches and the effectiveness of storing coax ends in glass jars.
  • Antenna modeling and compatibility in EasyNEC touched on stacking, vertical and beam interactions.
  • Traveling with ham gear: Helpful tips for scanning, repeater book use, RT Systems programming, and managing expectations on repeater activity when away from home.

❓ Workbench Questions

🛠️ What is a Slot Antenna?

  • Bill (KC3OOK) asked for a plain-language explanation.
  • Contributions from Ron (WA3VEE), Chuck (NA3CW), Harvey (3NZT), and others clarified that:
    • Slot antennas radiate perpendicularly to the slot.
    • Used frequently in radar and stealth installations.
    • Designs can be compact, mobile, and stealthy.
    • John Portune (W6NBC) is a go-to source with QST designs and build guides.

⚡ Lightning Protection & Coax Handling

  • Several operators offered insights:
    • Disconnecting antennas outside is best.
    • Grounded coax switches help with static but won't prevent damage from a direct strike.
    • Putting coax ends in a mason jar might contain sparking—but not useful for a direct hit and may be dangerous.
    • BlitzBugs, polyphasers, and physical disconnection are the gold standard.

📡 Modeling an X-300 Vertical on Top of a Hex Beam

  • Wayne (KC3SQI) asked about modeling in EasyNEC and whether stacking the X-300 above a hex beam would interfere.
  • John (WA3KFT) noted he’s had directional beams and verticals near each other without noticeable interaction.

🚗 Ham Radio While Traveling

  • Chris (KD3EMS) asked how others handle ham radio on the road.
  • Suggestions included:
    • Use of RepeaterBook mobile app.
    • RT Systems or CHIRP for programming based on trip routes.
    • PL tone scan to identify unknown repeaters in real time.
    • Accept that most repeaters are quiet, but local nets can be an inroad to friendly chatter.

🎤 Notable Mentions

  • Phil (KA1PXZ) heading to Sussex and maybe activating some POTA sites in Shenandoah NP.
  • Ron (WA3VEE) completed another 13 Colonies clean sweep and invited members to share Field Day photos.
  • Chuck (NA3CW) refurbished a classic tuner with new paint and bearings.
  • Harvey (3NZT) offered Bill a custom-built slot antenna to experiment with.
  • Chris (KD3EMS) excitedly shared success hitting the ISS and SO-50 satellites—impressed at how approachable satellite ops can be.
  continue reading

6 episodes

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