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Hans, it would be great if you could publish details of your receive and antenna on the web, or put a short film on you tube of your 17khz loop
73richard SO5GB
13 lip 2016 14:20 "Hans Joachim Brandt" < [email protected]> napisał(a): Dear Pete,
I guess I am the culprit why so many Germans are able to receive SAQ (the maximum number of SAQ receptions in Germany had even been 186 a few years ago):
I have started to receive SAQ in 1997, being a retired OM living in a small village in eastern Bavaria.
At first I have built a converter for SAQ to receive its frequency in a radio amateur band. But then a neighbor two houses away has installed a photovoltaic system on its house, and the operation of this system increased the qrm level so much that I could not receive SAQ any longer under these conditions.
Then I had the idea to build a portable receiver especially for SAQ, powered by a 9 V battery and a maximum current of 25 mA, depending on the audio power needed for the headphones. I even found out that I just had to divide the frequency of the well known clock crystal 32768 Hz by two to get a tone frequency of 816 Hz for the reception of SAQ. This receiver has been published in the german radio amateur perodical CQ DL May 2013. Six months later the number of german radio amateurs sending repots to SAQ has increased considerably. Still being a german member of the british G-QRP-Club I have also written an English version of this SAQ receiver, but it had been rejected because of "not being QRP". Just this year, on 13. April 2016, I have sent another English text about this receiver by email to Radcom. But until now I have not received any answer so far if Radcom would accept this text or not.
MY SAQ receiver is based on the fact that outside of residential areas the QRM in the VLF range is rather low. The antenna used is a tuned loop for 17.2 kHz. The loop is also able to separate vertically polarised radio waves from horizontal polarized waves. Even in the area where I usually receive SAQ there is a street and a telecom tower, and when I am turning my loop into a horizontal position a singing noise can be heard. But in the vertical position I have no problems to give a rapport of RST 589 for SAQ.
HW?
73 Ha-Jo, DJ1ZB
-----Ursprüngliche Nachricht-----
Von: [email protected] [mailto:[email protected]] Im Auftrag von M0FMT
Gesendet: Mittwoch, 13. Juli 2016 12:03
An: [email protected]
Betreff: LF: SAQ statistics
Hi All
Why is there such a high number of DLs receiving SAQ at 116 ? Very well done!
G putting in a measly 19 rprts.
I further away but putting in 26 rprts. Well done PA also in there with 24 rprts.
I blame the rsgb.
73 es GL Pete M0FMT GQRP#15097.in IO91UX .
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