I would like to see also an overall pikture of the LNB. I'm not 100% sure about the orientation of the x-tal. Just to be safe.
But from what I can see at the moment, the upper right Solderpad of the x-tal is the one you are looking for. Or use both the solder Pad of the x-tal and of the chip-C beneath.
Good luck!!
done, have fun
PH2M,
the FA-sy2 does a very good job. Assuming the heater is used.
The CW-Beacon here is about S9 on 70cm.
just finished a little python script, which does exactly that. It based on a program from G0FCU. I modified it to handle remote rig more nicely and to handle the offset between RX and TX. So, if you are interested let me know.
Is there a place here in the forum to store it?
73 de Achim
interesting idea...never tried the megasat LNB for 70cm. The FA-SY2 will do for sure.
I hope, I can test on the Weekend.
Modifying this one is no fun.
You'll be much better off with a PLL-Version.
Agreed, but I supprised that the SI570 used in the Fa-SY2 is so stable and has such a low Phasenoise even so it also contains PLLs internally.
I had to add
-std=gnu99
to the cflags at an earlier point to get it compile.
Maybe there is another cflag missing???
Which Linux are you using?
73 de Achim
@Kurt,
on SuSE 42.3 make complains:
make
cc -g -o playSDReshail2 playSDReshail2.o sdrplay.o fir_table_calc.o wf_univ.o color.o websocket/websocketserver.o websocket/ws_callbacks.o websocket/base64.o websocket/sha1.o websocket/ws.o websocket/handshake.o audio.o setqrg.o rtlsdr.o timing.o fifo.o ssbfft.o audio_bandpass.o hilbert90.o downmixer.o antialiasing.o -lpthread -lm -lmirsdrapi-rsp -lfftw3 -lsndfile -lasound -lgd -lz -ljpeg -lfreetype -lrtlsdr
/usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../x86_64-suse-linux/bin/ld: wf_univ.o: in function `drawWFimage':
wf_univ.c:(.text+0x28c): undefined reference to `gdImageFile'
/usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../x86_64-suse-linux/bin/ld: wf_univ.o: in function `drawWF':
wf_univ.c:(.text+0x59a): undefined reference to `gdImageCreateFromFile'
/usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../x86_64-suse-linux/bin/ld: wf_univ.c:(.text+0x626): undefined reference to `gdImageFile'
/usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../x86_64-suse-linux/bin/ld: wf_univ.c:(.text+0x63c): undefined reference to `gdImageCreateFromFile'
/usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../x86_64-suse-linux/bin/ld: wf_univ.c:(.text+0x655): undefined reference to `gdImageFile'
/usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../x86_64-suse-linux/bin/ld: wf_univ.c:(.text+0x895): undefined reference to `gdImageFile'
collect2: error: ld returned 1 exit status
Makefile:14: recipe for target 'playSDReshail2' failed
make: *** [playSDReshail2] Error 1
73 de Achim
Hi,
I asked myself, do I really need a GPSDO or would an x-tal oszillator stable enough? Whats about the phase noise?
As I had no x-tall of ~25Mhz lying around, i tried it with a FA-SY2 from http://www.box73.de which I use for testing here...
The test went much better than expected. After powerup for about half of an hour, it is stable enough for CW.
And on top, the phase noise is very low and it can be tune to any frequency between 10 and 280 Mhz.
73 achim
see you soon on QO-100 ( waiting for the upconverter )
sidenote: monitoring the CW-Beacon since ~20 Minutes, no wobling
uncritical: ~ 47nF
Forgot to mention. it need only about -20dBm external Signal to lock!
Well then....
I would not call it wobbling. From time to time, not very often, it get get off the Frequency for a few hundred Hertz for a very short time; but returns to the original Frequency. For me. its not really disturbing.
Regarding the PLL/Mixer I can't tell too much. If I recall it right it starts wit Rxxxxx
The x-tall is 25Mhz. It is the little black Box right in the middle of the image.
And here an image of my mod:
73 de Achim
Hello,
if it helps to find an LNB, I'm using a Megasat Diavolo Twin, which is still available from: https://www.reichelt.de/lnb-tw…volo-twin-p74259.html?r=1
73 de Achim
Thanks, works perfectly 
Thank you. I'll give it a try. Nice to know, That it working with wine.
Strange enough, AO40Rcv tells me that I have ~20dB SN.
73 Achim
Hi @all
did anyone succeed in running AO40rcv on Linux using Wine???
Its runnig but no lock at all 
73 Achim
