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An aggregate of Ham Radio related news.
  • APRS Connect is Now on iPhone

    The following is a message from APRS Connect:

    APRS Connect, the messaging-first APRS client that launched on Android in August, is now on the App Store for iPhone (iOS 16.4 or later). It is free to install and use over APRS-IS. Connecting a radio and several advanced features are part of APRS Connect Pro, a subscription with a 7-day free trial.

    APRS OTA, the on-the-air activity that runs entirely over APRS, has its own screens in the app, so you tap buttons instead of typing bot commands. Hosts go on the air in one tap. Each chaser's call arrives with their message, where they are and a Confirm button. A bar across the top shows QSOs, points and time left, with buttons to stay longer or message every chaser at once. A live map shows you and your chasers and adds up how far your contacts have reached. Chasers get the list of hosts on the air, tap one to call, and watch each step through to the host's QSL. Every op is saved with its map and scores and can be shared as a picture. Chasing works over APRS-IS, free. Hosting needs a radio, as APRS OTA's rules require.

    The other services on APRS get the same treatment, a guided screen instead of a command to memorize: weather, the repeater finder, WHO-IS, the SMS, email and Winlink gateways, and APSPOT and APRS2SOTA self-spotting. #APRSThursday and other ANSRVR groups open as a single net room.

    On iPhone the app connects to KISS TNCs over Bluetooth LE or TCP. It can also work through a radio's speaker and mic, using the built-in AFSK 1200 audio modem with VOX keying. Radios with a Bluetooth LE KISS TNC built in, such as the BTECH UV-Pro, connect directly.

    Several things have been added since the app was first covered here:

    • The phone can be an IGate. It passes what your radio hears to APRS-IS and, if you choose, sends messages from the internet back out on the air for stations nearby. It can also be a digipeater that stays quiet when another digipeater has already repeated the packet.
    • A coverage map shows the places your beacons were picked up by a digipeater.
    • Pinned stations, a grid square screen, and the ISS on the map.
    • A setting chooses how messages go out: radio first, APRS-IS first, one link only, or every channel at once.
    • An optional account keeps messages, pinned stations and settings the same on every device. When two devices share a callsign and SSID, only one of them beacons, acks and digipeats at a time.
    • A "Rest of the world" map layer shows stations heard anywhere on APRS-IS, not only the ones your device heard.
    • The app is more accessible for operators who use VoiceOver and TalkBack. Every button has a spoken name, and an open conversation reads new messages aloud.

    The newest of these are on iPhone now and reach Android with its next Play release.

    More at https://aprsconnect.com, and on APRS OTA in the app at https://aprsconnect.com/ota. Download the App: https://aprsconnect.com/get/89x5bv.

    Source: APRS Connect

  • Call sign grace period: A hard lesson learned

    By Rob Rosenberger (K4HST)

    The FCC's two-year grace period is a safety net if we forget to put a reminder in our calendar app. One operator relied on it when he applied for a renewal in April, five months before the end of his grace period. But it requires more than just signing in. He needed to confirm the payment actually occurred.

    This brings us to the sad tale of KE6MIT.

    He attempted to renew it twice. His first application on April 9 placed his call sign in a temporary status that shielded him from losing it. His application was dismissed 19 days later, probably over a failure to pay. He did not petition the dismissal; the period for reconsideration closed; and his call sign returned to its normal grace period on June 9.

    Did he not get the FCC emails? Did they go into his junk folder?

    A second application on July 23 again placed his call sign in a temporary status, and the FCC again waited 19 days. Detailed records suggest the ULS checked the CORES database each workday to see if he paid $35. August 11 arrived and the FCC again dismissed his application.

    KE6MIT reached the end of its grace period on September 14 — yet the window stayed open to petition the second dismissal for reconsideration… had he done so… which he didn’t.

    That window shut on September 22 when the FCC closed the period for reconsideration and the ULS set KE6MIT to “expired.”

    KE6MIT’s circumstances led me to analyze the ULS data to learn how many call signs expire for lack of payment. Over the last two years, roughly 20% failed to apply for renewal, while another 5% failed to pay their fee after applying:

    Amateur Radio License Attrition

    Roughly 1 out of 16 operators who apply for renewal fail to pay for it. Did they not get the FCC emails? Did they go into a junk folder?

    (The chart can only go back 24 months because the FCC apparently flushes payment data to control database bloat.)

    All operators should consider doing four things: (1) put a note in your calendar app to update your email address before you pay a renewal fee; (2) update your FRN with a valid email address if needed; (3) submit a payment application; and (4) make sure the payment goes through.

    Don’t learn this lesson the hard way. Your grace period offers zero protection if you fail to pay.

    Source: Rob Rosenberger (K4HST)

  • Radio Club of America 2026 Technical Symposium & 117th Awards Banquet

    The following is a message from the Radio Club of America (RCA):

    Join the Radio Club of America at the 2026 Banquet & Technical Symposium—where the brightest minds in wireless communications come together to share ideas, celebrate achievement, and build lasting connections.

    Experience thought-provoking technical presentations, engage with industry leaders, explore emerging technologies, and conclude with RCA’s signature awards banquet honoring distinguished innovators.

    The Radio Club of America Awards Program is an industry premier event. Every year, it is preceded by the day-long Technical Symposium. Both events showcase expertise and achievement in every segment of wireless.

    The 2026 Technical Symposium & 117th Awards Banquet will take place Saturday, November 21st in New York City.

    Registration is now open.

    Source: Radio Club of America

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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