ES5TV: 15 meter moonbounce successful!

erI think this a First… (see comment below)

Back in October I posted about a monster 15m antenna (read ES5TV’s description here) going up in Estonia. It is composed of eight 5-element monoband Yagis on a 230-foot (70m) tower.

Tonno ES5TV, the lucky owner, pondered at that time whether it might be possible to use such a high-gain antenna to work EME on 15 meters.

Mission Accomplished!

With an antenna fixed on the horizon, attempts were restricted to moonrise and moonset only and Tonno’s third attempt was recorded in the video (below).

The only problem with having such a gargantuan 15m antenna is that there’s not likely to be anyone who can reciprocate and offer a traditional EME QSO – but Tonno’s own echoes as received by him are as amazing as a QSO would be.

Check out the video of Tonno receiving his own echoes from the moon:


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  11 comments for “ES5TV: 15 meter moonbounce successful!

  1. February 5, 2013 at 1:18 pm

    His echoes are so strong and clear – and on 15M too. That is simply stunning.

    Dave
    AA7EE

  2. February 5, 2013 at 6:04 pm

    awesome
    I feel a bit a pussy now not to dare to place my little toy beam up

    • February 5, 2013 at 6:25 pm

      You made me laugh, Jaap!

      But on a serious note – maybe a smaller station (even though not EME capable) could hear Tonno’s sig since he’s hitting the Moon with some real ERP. After all, two small 2-meter EME stations can’t necessarily work each other, but they can work the superstations.

      UPDATE: Looks like K3LR is interested in a 15m EME sked with ES5TV. Here’s his 15m antenna (28 elements):
      http://www.k3lr.com/2011/CQ11CW/IMG_3300.jpg

  3. February 6, 2013 at 12:17 pm

    Oops – it’s not a First! See the following from JH1KRC in 2006:
    http://eme.dokidoki.ne.jp/sound/jh1krc/index.html

  4. February 6, 2013 at 5:40 pm

    I am sure they did verify that the echo’s they hear are reflected from the Moon and are not ionosphere echo’s as they can be very loud at 15m?
    But if they can hear echo’s from the moon. It must be possible to have 2-way using JT65B and small antenna at the low side.

    • February 6, 2013 at 5:56 pm

      The timing delay is correct for the moon’s distance.

      And I agree – a weak-signal mode EME attempt by small stations would be very interesting. “Small” in this case would be a kw and a ‘normal’ Yagi.

      Hmmm…..

  5. Rich, KI7K
    February 8, 2013 at 4:35 pm

    Totally awesome. The return signal is HUGE for 21MHZ.

    What I am most interested in the music that was chosen to accompany the video. Extremely PERFECT! Can you please inform me and others who composed the music?

    Regards and congratulations for a well produced video! I love BIG antennas!

    • February 8, 2013 at 4:42 pm

      Rich, you’ve got better hearing than me – I don’t hear any musical accompaniment to this video…

      • fdiaz_montano@hotmail.com
        January 3, 2014 at 2:32 am

        As you can see is it so hard to get the moon bounce in HF , it is just a matter of desire , of course you have to put some money on the table, and enfasadas antennas are huge, this is perhaps the greatest impediment . For certain power linear amplifiers are not as expensive as no one has decided so far is the possibility in the air, until someone with illusion and money to complete the project. This is likely there will be the way to new modes of communication, when the satellites is not a feasible means , at least in low speed and emergency system . Lost between a circuit round and round round 60db , so if this system has 24dBi gain and 2000 watts = 33dbw , the EIRP is +57 dbw , so a single circuit back , we still dbw – 60db +57 = – 3dbw (0.5 watts) , or medium watt EIRP assuming on earth have the same antenna reception system . Therefore it is possible to place a beacon on the moon with 1 watt of power and a dipole with some profit helped by the Lunar soil , so could be copied even modest stations .

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