Your unit, I cannot be sure, but it looks as though the LNB casing In theД¬ase of the Titanium unit this is a relatively simple matter and IД¬an modify mine in less than an hour. Has to be modified to allow external signal injection. Not only is the cost of a suitable external oscillatorДЄn issue, you will also have to factor in the fact that the LNB Would have never built such a unit just for receiving C-Band I need a super accurateДЇrequency standard for my other radio related activities and I Standard, which results in a maximum frequency drift of 200Hz at Use a 25.00MHz signal generated by a GPS disciplined frequency Oscillator signal, in the case of the Titanium 25.0 MHz. The only practical way ofД®liminating drift, as you already know is by providing an external This couldД®xplain why a Titanium LNB would be so expensive, as it will Wonder that maybe it is a locally manufactured unit. Web page only claims the 'design' to be Taiwanese, which makes me I presume that you either received aДielectric slab with your LNB or managed to get hold of one. LNBF, which of course is nothing more but a linear LNB which comes Notice that SOLID also offer what they refer to as SOLID circular Your decision to use the RTL SDR v3Дongle is perfect, as this device uses a TCXO for the LO. Like you have made some solid pragmatic decisions in the gear youД«ought and have managed to get maximum performance with the I cannot find anyД¬lues as to what the frequency drift is supposed to be. However that appears to be a real challenge. Of your LNB would allow me to have a look at more detailed specs. John toggle quoted messageShow quoted text please PM me as we are always looking for more satellite ground stations. If you would like to join our network, giving you extended global coverage as attached.

Perversely, some users see no drift at all, they are the ones based in countries where daily temperature range is minimal, for exaample, southern Europe. Thermal covers of various designs have also been tried. When I set up the network I suggested we all use the Titanum lnb as it seemed the best and cheapest option, AFAIK it still is. SDR console using a bandwidth of 24hz can also cushion the effect. If it doesn't we need a linux expertД®cho '$PROG2 started', waiting $DELAY seconds.Our Planeplotter Oceanic network has been running for well over two years now and thermal drift is certainly an issue.ДЇine during the winter, but during summer, a real pain.ДЄ simple way to compensate is keep an eye on the movement for a couple of days, then split the C band signal to set up two instances of SDR, set one running 'on' frequency, the other slightly higher / lower. This might work if linux can find the 'filename.jar' - give it a try.

Add the bits in red to the existing script (I've not included all the old script here to keep it shorter - do not delete anything from script - just add!! Looking at that shell script, someone added starting up ppup1090 from the original version so why not try adding your java command as well. # Check to see if we are running as root first.Д®cho 'This script must be run as root' 1>&2Д®cho 'Usage: $0 ' 1>&2 # Program is not running, exit with error. # Change from /dev/null to something like /var/log/$PROG if you want to save output.Д®cho '$PROG started, waiting $DELAY seconds.' PROG_ARGS='-inSerial /dev/ttyUSB0:3000000:hardware -outServer beast:30005 -outServer msg:30003 -web 8080 -location yy.yyyy:xx.xxxx'Д®cho 'Error! $PROG is currently running!' 1>&2

Planeplotter pbworks