Q
Rafael Diniz <rafael@xxxxxxxxxx> hat am 24. Juni 2015 um 18:15 geschrieben:
Hi Stefan
Am 24.06.2015 14:00, schrieb Rafael Diniz:
What rf frontend are you using?
It is a homemade DC converter. The band of interest is the 630m amateur
radio band, i.e. the range 472...479 kHz, nothing more. I'm using a
1.8432 MHz xtal divided by 4, i.e. about 461 kHz LO frequency. So the
output is then at 11...18 kHz, inside the range of the soundcard, which
is 0...24 kHz. This converter is consuming 30 mA at 12V. The whole
system (RX + WLAN stick + Raspi) is consuming 250 mA at 12.7 V. I have
to avoid any unnecessary power consumption, this is why i do not want
the use the new Raspi B2. The soundcard can be found on ebay "SD-AUD20101".
The RTL dongles do not provide the necessary dynamic range. They may
provide 50 dB but i want/need at least 80 dB!
In my system, without an antenna connected, the noise floor is at -110
dB and the band noise (antenna connected) in daytime is at -90 dB.
Furthermore i need a stereo receiver (to be built, as soon as the
darkice problem is solved) to build a "colour RDF system", as described
here: http://df6nm.de/ColourDF/ColourDF.htm
Very nice. 630m band! wow!
are you using latest darkice code (not latest release)?
Not sure if i understand you correctly. I have removed all the
darkice-1.0 components and then downloaded the darkice-1.2.tar.gz
package, installed as suggested and using the new darkice.cfg file into
/etc.
Use latest code from git:
https://github.com/rafael2k/darkice/tree/master/darkice/trunk
try to run icecast locally in RPi.
How is this done? Remember the Raspi is only accessable over SSH (putty
or filezilla), no GUI, just the console.
Just fire up icecast2 in it. No need for GUI at all.
Best regards,
Rafael Diniz
