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  • POTA/SOTA Activation at Diamond Head Turns Into Real-World Emergency Response

    The following is a press release from KH6ML:

    HONOLULU, HAWAII — September 16, 2026 — What began as an early-morning Parks on the Air and Summits on the Air activation at one of Hawaii's most recognizable landmarks unexpectedly turned into an opportunity for an amateur radio operator to put years of emergency preparedness and communications training to practical use.

    A short video documenting the Diamond Head activation and emergency response is available here: https://youtu.be/_GO4as2CSvc

    Michael Miller, KH6ML, began hiking the Diamond Head Summit Trail on Oahu at approximately 7:15 a.m. Wednesday morning. His plan was to complete a combined POTA and SOTA activation before heading to his full-time job as a partner at Tiki's Grill & Bar in Waikiki.

    Operating portable from the summit with an FX-4CR HF transceiver at approximately 20 watts, a small Bioenno battery, end-fed wire antenna and an AnyTone VHF/UHF handheld, Miller completed 11 contacts.

    His activation included Diamond Head State Preserve, POTA US-6425; Diamond Head Summit State Trail, US-10913; and the Diamond Head SOTA summit, KH6/OH-025.

    Moments after completing his 11th contact, a visitor approached Miller and asked if he could help. A woman had collapsed inside the observation bunker below the summit.

    Miller immediately left his HF station behind, took his handheld radio and headed toward the patient while calling 911. Because of uncertainty about cellular coverage inside the reinforced structure, Miller also advised amateur radio operators with whom he had been communicating to stand by in case an alternate communications path became necessary.

    The patient, a visitor from Japan, was traveling with her husband and adult daughter. Miller began gathering information from the family and relaying it to emergency dispatchers while Honolulu Fire Department personnel responded.

    "The 911 dispatchers were extremely professional," Miller said. "They were calm, direct and focused on getting the information the responding crews needed. The communication between dispatch and the field response was impressive."

    Honolulu Fire Department personnel reached the bunker and assumed care of the patient. Additional firefighters and rescue personnel followed with medical and rescue equipment. The difficult location required responders to develop a plan for moving the patient from the confined bunker and across the steep summit terrain.

    A helicopter was subsequently brought into the response.

    "The professionalism of the firefighters was remarkable," Miller said. "They climbed Diamond Head carrying their equipment, immediately assessed the situation and went to work.

    Miller later accompanied the patient's daughter down the trail and helped her reconnect with her family and emergency personnel at the base of Diamond Head.

    Later that afternoon, Miller received a message from the family thanking him for his assistance and reporting that the woman was doing well and the family had returned to their hotel.

    For Miller, the incident also demonstrated how the skills developed through amateur radio can complement broader emergency-preparedness training.

    "Did ham radio help? I think it was one piece of the puzzle," Miller said. "Amateur radio teaches us to communicate clearly, know our location, pass information accurately and think about what happens when normal communications aren't available. Add CERT training, Red Cross training, Scouting and other life experiences, and hopefully you're a little better prepared when somebody needs help."

    Miller serves as a Deputy Coordinator for Radio Amateur Civil Emergency Service (RACES) for the City and County of Honolulu. He is also an Assistant Section Manager and Government Liaison for the ARRL Hawaii Section. Outside amateur radio and emergency communications, Miller is a partner at Tiki's Grill & Bar in Waikiki.

    The incident was a reminder that while POTA and SOTA provide amateur radio operators with opportunities to practice portable operations, antennas, low-power communications and field deployment, those same habits of preparedness can have applications far beyond making contacts.

    "I went up Diamond Head looking for radio contacts," Miller said. "The most important contact I made that morning wasn't on the radio."

    73 from KH6ML

    Source: KH6ML

  • "Active" call sign probably isn’t what you think

    By Rob Rosenberger (K4HST)

    Do this: visit the FCC call sign lookup and search for W0QUF. It says right there on the page: "Status: Active." Except it's not. Look farther right and you'll see its grace period started in January. Now search for it at the ARRL call sign lookup. They give you no hint it's in a grace period.

    Do an FCC lookup on KD0NZJ. It's long expired, right? Except it's not. Look to the left and you'll see a "PA" icon, which means it remains active pursuant to FCC rule 1.62. If you look it up on ARRL, it'll say "(Administrative Update Applied)" below the expiration date. They give you no hint you can lawfully communicate with them.

    Neither FCC nor ARRL offer visual cues on their search pages when you look up a call sign. You must inspect the data with your calibrated eyeballs to confirm its status.

    So, let's go over what you need to know. We'll break it down into five categories:

    A "live" call sign is marked active and can transmit. It has not reached its expiration date. Roughly 90% of all "active" call signs fall into this category.

    A "dagger" call sign is marked active and can transmit regardless its expiration date. A "pending application" extends its life. Roughly 430 call signs fall into this category (a scant 0.05%) and the FCC often spends years resolving them.

    A "grace" call sign is marked active yet cannot transmit. It exceeded its expiration date, lies within its two-year grace period, and has no pending application. Roughly 10% of all "active" call signs fall into this category.

    A "zombie" call sign is marked active yet cannot transmit. It exceeded its grace period with no pending application, yet the ULS database failed to mark it expired. The most recent example is KI4FHE. (If you run an FCC lookup, do not have any liquids in your mouth! You've been warned.) Zombies might pop up for a day or two if the second anniversary of their expiration date falls on a holiday Monday.

    A "dead" call sign is marked canceled, expired, or terminated. Enough said.

    You might ask "where did these five terms come from?" The short answer: The interwebs apparently had no terms for them and I needed a taxonomy for the niche PDF amateur radio call books I produce. My searches of online amateur radio literature, developer repositories, and the FCC's ULS documentation revealed no similar published model ... so I offer this to the public domain:

    Terminology FCC Status ULS LicenseStatus Expiration Date Additional Condition Output / Action
    Live Active A Future None Standard black text
    Dagger Active A Past (Any length) Pending application Superscript dagger (†) e.g. WQXN317 since 2021-04-20
    Grace Inactive A Past (< 2 years) No pending app Dark red text e.g. WA4RHD
    Zombie Inactive A Past (>= 2 years) No pending app Triggers logging warning e.g. KI4FHE from 2026-04-26 to 2026-09-09
    Dead Inactive Non-A N/A None Excluded from output

    Ta da! You now understand what "active" means when you look up a call sign on a search page. Calibrate your eyeballs for the FCC, shame the ARRL webmaster for me, and 73!

    Source: Rob Rosenberger (K4HST)

  • brugtgrej.dk is Denmark's Premier Marketplace for Used Ham Radio Gear

    The following is a message from brugtgrej.dk:

    Since the year 2000 I have been running a site for announcing used ham radio gear here in Denmark. It has since grown to be the one and only place for buying and selling used ham radio gear and has also become the biggest discussion forum here in Denmark.

    Earlier this year, I released generation II of the platform to make it more contemporary, and I added a lot of features for daily ham use. The site is called brugtgrej.dk. The language can be switched between Danish and English. My latest added feature is a Shack display intended to run on a PC in the shack to show relevant live information on DX, aurora, satellites, weather, lightning etc.

    The best value is provided if you create a user because that way we know your location to show more relevant information.

    73 DE OZ1DW
    Christiane

    Source: brugtgrej.dk

N4UN Amateur Radio
BASE 40 Flight October 8, 2009 PDF Print E-mail
Written by Administrator   
Friday, 09 October 2009 09:19

BASE 40 was successfully completed today.

Launch was about 8 minutes late in a light rain. 

Launch at 1218 UTC from southwest corner of track around football field.  Had good visual of the ascent for nearly ten minutes.

Burst at 88000 feet at 1319 UTC (average ascent speed of 1440 ft/min).  Occurred over the southwest corner of Greenfield, IN. 

At 62000 feet at 1323 UTC a catastrophic event occurred during post-burst chaos.  The APRS unit remained attached to the parachute, but one of the swivel connectors opened and the remaining string was cut by the carbon fiber tube released the 900 MHZ command pod, DominoEX, geiger counters, video cameras, and photometers.  With no chute, these boxes landed in a field southwest of Knightstown and northwest of Carthage, IN.  Impact occurred at 1334 UTC and the flight data recorder indicated a speed of about 48 miles/hour 200 feet above the ground.  Maximum descent speeds in the free fall reached 120 miles/hour.

With the reduced load, the parachute and APRS unit landed east of Richmond, IN at 1410 UTC in a soybean field about 2.5 miles east of the Indiana-Ohio state line between US 35 and I-70.

I will examine the video for additional details on the separation event.  This initial analysis comes from flight data and analysis of the payload strings.

Thanks again for your support,
Howard

P.S. - I know that Bill Brown would appreciate any feedback from those that attempted to receive the Domino EX signal.

 

 
BASE 34 Flight March 12, 2009 PDF Print E-mail
Written by Administrator   
Monday, 16 March 2009 11:53

BASE 34 was successfully completed today.

Launch: 13:52 UTC from DePauw
Burst: 15:20 UTC at 103,800 feet
Landing: 16:12 UTC between Potsdam and Laura, Ohio (39deg 58.78 min North, 84 deg 24.77 min West)

We had a visual sighting on the descent for the last two minutes. Smooth landing in the top of four trees about 60 feet above the ground. Retrieval was accomplished with the EZ Hang slingshot system using the tennis ball as the projectile. (Only took 4 attempts, with the first two being miserable failures due to operator error by me.)

The StratoStar system sent all the flight data to the mobile tracking station in real time.

Landing support from Ron, N9QGS, and Justin,W1IX.

Additional details will follow on www.depauw.edu/acad/physics/base

Howard
Last Updated on Monday, 16 March 2009 11:57
 
BASE 32 Flight January 13, 2009 PDF Print E-mail
Written by Administrator   
Thursday, 15 January 2009 17:01

The BASE 32 flight was a success. Launch at 16:20 UTC from DePauw campus (39.64
North, 86.86 West) by a rookie crew in 20 mph winds. Average ascent rate of 1470
feet/min. Burst at 17:18 UTC 85,000 feet. Landing at 18:02 UTC at 39.774
degrees North and 85.055 degrees West longitude. Flight heading 84 degrees from
launch to landing. Great circle distance 97 miles.

Recovery made by Justin Munger, W1IX.

Excellent realtime flight data from student experiments.

Details to follow on the website: www.depauw.edu/acad/physics/base

BASE 33 is still on schedule for Saturday 17 January.

Howard
 
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American Radio Relay League | Ham Radio Association and Resources
The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources.
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