Having upgraded to an SDRplay RSPduo, here is a typical result from the overall M2 receiver system here at G8GKU, system details may be found below the image.
METEOR M N2 APRIL 13 2019 10:30 am. ORBIT NUMBER 24700 North to South pass, over UK. 137.910 MHz +- Doppler
RECEIVING SYSTEM, from aerial inwards …. AERIAL, crossed dipole 4 element turnstile, RHCP PRE-AMPLIFIER, 24 dB gain ca 0.6 dB N.F. SIGNAL FEED, 12 Meters coax, low loss double screen. AMPLIFIER POWER, 9v @ 100 mA, bias T to coax BAND PASS FILTER, 137.5 MHz, double tuned RECEIVER, SDRplay RSPduo SDR PLATFORM, SDRuno POST PROCESSING, AUDACITY, re-sample to 192,000 SOFTWARE Rx, LrptRx SOFTWARE DECODER, LRTPoffLineDecoder
All trademarks and software names gratefully acknowledged.
Although many satellite images are captured with little or tolerable degradation, due to the effects of near band or in band pager interference, some images are more badly affected. This image received from Meteor M2, June 20 2017, orbit number 15301, 11:00 hours, 137.900 MHz, shows the effect of both in band and near band data transmissions from local, ( Oxford, UK ) high power pager style systems.
Update 13-02-2019: Orbitron doesn’t seem to work well unless you run it as admin – it can’t save files to its install dir and won’t pick up config changes. One work-around may be a custom install location.
Don’t directly run the exe, you have to launch it from Orbtron itself by going to the rotor/radio tab, selecting the correct DDE driver, in this case it’s DDEOrbitronToSerial. Then click the button to the right of the dropdown to start sending data and launch the application:
The DDEOrbitronToSerial application should now launch and you will be able to select your COM port and output the satellite data to the serial port.
NB: You can edit additional options such as com port baud rate in the config file by clicking the open config button.
Any bug reports or feature requests are welcome!
June 2019 – Added latest release with a bug fixes:
FIXED: Certain USB to serial chips would only receive a few characters.