Hello,
has anybody such an antenna in use for upload and can share his experience ?
Many thanks
Uli DF5SF
Uplink with WiFi Panel Antenna 20dBi
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Hello,
I used something like this (not exactly this antenna, but with the same technical data) during my hollidays this year in I5 (Toscana). With about 10W I had a very good readable SSB signal via QO-100 (about 3db below the CW beacon).
73 de Johannes
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Was kostet so eine Antenne und wo kann man sie kaufen?
z.B. hier: https://cablematic.com/de/prod…enne-24-ghz-21-dbi-AP026/
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I have done a similar test.10 w can work in the digital mode.
Here is a test video
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John, G4BAO used a near identical antenna for a QO100 demonstration at the RAL microwave round table in June. It worked very well.
Mike
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Hi,
I bought now the antenna here https://cablematic.com/de/prod…enne-24-ghz-21-dbi-AP026/.
Shipping cost to Germany 7.40€+VAT
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Hi,
today I got the antenna. Here some pictures:
How can I make a lossless connection between SMA and N ??? In first step it is for indoor through an open window.
Tnx
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Hi Uli,
can you measure the return loss? Would be interesting.
73s
Robert
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How can I make a lossless connection between SMA and N ??? In first step it is for indoor through an open window.
Tnx
You can't, that would violate physics but you can make a very low loss connection with a quality SMA-N adapter and a slightly higher loss with coax. As long as it's short the loss will be negligible.
I am making an assumption this antenna is for QO-100 TX? Bear in Mind the power handling won't be that high. Quite likely to be high enough for a 10W SSB uplink though.
Please let us know how well it works.
Mike
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DB2OS
Changed the title of the thread from “Upload with WiFi panel Antenna 20dBi” to “Uplink with WiFi Panel Antenna 20dBi”. -
BTW: In Spain this antenna would be illegal for QO-100 Uplink as it has < 22.5dB gain and less directivity...
Rules which can't be enforced are useless rules. Also the social/economical impact of our 'Scooby Doo' experiments is below the noise / radar .. so it's like Orange Free State (Oranje Vrijstaat) (having a Dutch origin ; -)As long as you do not exceed the agreed uplink budget it's all fine imho.
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Rules which can't be enforced are useless rules.
They can be enforced easily by just taking away our permission to transmit there in case they worry about interferences due to "sloppy" transmissions... We have seen that before..
We are only secondary and some countries might be "sensitive"..
But indeed they might not come to visit you and verify what antenna you are using. But still this should not be ignored... The Spanish regulator obviously had some reasons for adding this requirement in the latest permission rules. Maybe they want us (when in Spain) to "concentrate" the transmitted RF energy in the direction of the satellite instead of "polluting" our surroundings..
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It's a sensible rule - there are many rules that can't be enforced. For example you are not supposed to transmit more than the license allows yet you can buy a 1kW amplifier. You are not allowed to exceed 70mph in the UK but nearly every car can exceed this. The responsibility is put on citizens to comply with the regulations, with penalties for infringements.
There are other users at 2.4 GHz, including some amateur satellites and if we are lucky one day we might get another transponder. Then it will matter how tight our beams are.
Mike
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Hi,
first results ("quick and dirty") with this antenna:
CW-carrier with 2W out and antenna handheld through an open window. Antenna beaming into a high tree. Weather was foogy with some rain.
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Hi Oliver,
Turn the antenna approximately in the direction of the satellite, transmit on a known uplink frequency, then controll the associated downlink frequency with WebSDR (http://websdr.is0grb.it:8901/ or https://eshail.batc.org.uk/nb/).
Turn the antenna to find your signal. If signal is strongest, you have the correct direction. OK ?
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Nope, really easy. Check the WebSDR on your mobile phone or laptop while finetuning the dish. The better the initial alignment with compass, the quicker you are done.
There is a catch though: I would not radiate full power when standing next to it, not even with 2W. Microwave energy is not really good for organic tissue, eyeballs are most affected. Call me paranoid..
