[Moon] [Moon-Net] ON0EME beacon

[valter dolso]

I'm happy with the beacon like it is, hope never put it in JT, i prefer 500watts CW or less than 50 in jt, And the soumd of the beacon in CW is great.Please let the beacon CW only...
                                                                                   73, Valter IK1FJI 

    Il Sabato 4 Agosto 2018 0:48, Paul Andrews via Moon-net <moon-net at mailman.pe1itr.com> ha scritto:
 

 Eddy,
ON0EME is a very valuable resource for the 23cm EME community.  You know this because even a small problem is immediately reported to you.  :)
Digital modes like JT65 are becoming more popular and are the primary way a small 1 x yagi station will operate EME.
The benefit of adding a JT65 signal to ON0EME would be to allow testing all the way to decodes.  Many new stations have setup problems after the preamp.
I know adding JT65 would add complexity because you'll need a SSB radio or direct generation of JT65 with frequency shifting - fancy stuff.
I'm happy with whatever you decide.  I wanted to explain how ON0EME could provide added benefits in a world moving quickly to digital modes.
BTW - Has anyone developed an moon tracking system for their dish using ON0EME as a beacon?   It would require a hunting algorithm.  Any cheap RTL-SDR could operate as a beacon receiver.
73 - Paul - W2HRO



On Fri, Aug 3, 2018, 18:20 Eddy Jespers via Moon-net <moon-net at mailman.pe1itr.com> wrote:


Hi Bob,
Thank you for the comments on the ON0EME moon beacon.
We have set up this moon beacon on March 2012 and the moon beacon has been on line ever since. At the moment we have some issues on the power amplifiers we are using but we probably have a solution soon, we will report on this issue soon.
ON0EME is not using any digital modes just because we designed the moon beacon to be received with minimal conditions. Even with single yagi antennas this beacon can be received off the moon on 1296.0000We received reports from stations using very small antennas and sending us audio reports ! If ON0EME was used to be set up for digital modes,  we probably would go for 50 Watt and not 500 watt :-) This was not the design option. 
We want to encourage stations to go and look for the beacon and optimise noise figure and and antenna gain.We like to receive audio files in analogue format, Audible  :-)

Vy 73’s Eddy ON7UN




On 2 Aug 2018, at 22:43, Bob Atkins <ka1gt at hotmail.com> wrote:
Hi Guys
Just wanted to thank you for the ON0EME beacon. It's often the only signal on the band and very useful for evaluating tracking accuracy and system performance. With a 2.7m dish and estimated 0.3dB NF I see the signal peak at around -11 to -12 dB (2500Hz) at perigee with good copy on the CW. At apogee the signal drops to around -15dB (2500Hz). At that level I can't copy the CW though I may hear a character once in a while.
I can see your signal with the Moon below the geometric horizon. I have a clear shot to the east and I've detected the signal coming out of the noise with the moon as much as 1.8 degrees below the horizon!
Have you ever considered adding a 60s period of JT65C between CW and carrier transmissions? It would be really great to have a JT65C signal for testing with. I'm currently struggling to get good decodes with MAP65 and lack of signals makes it a slow process. I believe the 10GHz beacon uses a coded transmission as part of its signal.
Anyway, thanks again for your efforts. The beacon is a great resource.
73Bob, KA1GT

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Moon-Net posting and subscription instructions are at http://www.nlsa.com/nets/moon-net-help.html