New World Distance Record Claimed on 122 GHz !!

Discussion in 'Amateur Radio News' started by IW2BSF, Feb 21, 2020.

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  1. IW2BSF

    IW2BSF Ham Member QRZ Page

    New World Distance Record Claimed on 122 GHz !!

    A new world distance record of 139 kilometers (86.2 miles) is being claimed by radio amateurs in northern California. This tops the record of 114 kilometers set in 2005 by WA1ZMS and W4WWQ, according to the Distance Records on the ARRL website.

    The February 17, 2020, contact was between Mike Lavelle, K6ML, on Mount Vaca (CM88WJ75ON) at 835 meters (2,739.5 feet) above sea level, and Oliver Barrett, KB6BA (at 1225 UTC), and Jim Moss, N9JIM (at 1250 UTC), both on Mount Umunhum (CM97BD18VJ) at 1,016 meters (3333.3 feet) above sea level.

    Lavell reports the dew point was –11 °C, the air temperature was 15 °C, the path loss was about 225 dB, and atmospheric loss was approximately 0.35 dB/kilometer.

    “CW was used, 122 GHz signals were very weak (7 dB above the noise in 22 Hz; –13 in 2500 Hz equivalent) with [fading] down to the noise floor,” Lavelle told ARRL. “Dishes were aligned on 24 GHz (71 dB above the noise) prior to [moving] to 122 GHz; we heard signals right away on 122 GHz.” The stations employed 60-centimeter satellite TV dishes and ran “somewhat less than half a milliwatt” on 122 GHz, Lavelle said.

    Info by ARRL

    73 de IW2BSF - Rudy
    W1KRI, YF8RQN, G4PGJ and 5 others like this.
  2. PA0MHS

    PA0MHS XML Subscriber QRZ Page

    Amazing achievement! Well done guys! And in CW no less :)
  3. IW2BSF

    IW2BSF Ham Member QRZ Page

    a found a old my post .....

    1 CONTACT 241 GHZ in the UK!

    This video is the first UK QSO that took place on Feb 19, 2016 at 3:00 pm on the 241 GHz (1,2mm) band between Roger G8CUB / P and Chris G0FDZ / P in the locator square JO01EP, Essex.

    video here:

    73 de IW2BSF Rudy
    KK4CUL likes this.
  4. N6TRU

    N6TRU Ham Member QRZ Page

    I'm not quite sure on this, but it's possible I met one of the record breakers while also operating radio on Mt. Umunhum.
    He was operating on an FT-817, with quite the dish. One of the park's rangers attempted to get him to move the
    dish off of the helipad. Again, not exactly sure if it was the same fellow, but it certainly seems likely.
    He was also communicating to someone on Mt. Vaca.

    Congrats to the record breakers! and 73, Truman N6TRU

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