SatNOGS reception comparisons.
Receiving the same satellite, at the same time with two different SDR receivers connected to the same x86/i386 debian system and running the same SatNOGS software.
The antenna's connected are at the same height and 2 meters apart.
This information also contains some experiments I am working on, at the end of the page there is an antenna design I am working on to see how well a 3 element yagi pointing straight up can be used. One is already active and second one that will have RHCP is currently being build.
Initial configuration
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| RX RTL-SDR Station 2176(UHF) and 2173(VHF) | RX Airspy Mini Station 431(UHF) |
SATNOGS_SOAPY_RX_DEVICE="driver=rtlsdr,serial=00001220" SATNOGS_RX_SAMP_RATE="2.048e6" SATNOGS_PPM_ERROR="-1" SATNOGS_RF_GAIN="29.7" SATNOGS_ANTENNA="RX" SATNOGS_DEV_ARGS="biastee=true" |
SATNOGS_SOAPY_RX_DEVICE="driver=airspy,serial=04a464c83670830b,biastee=true" SATNOGS_RX_SAMP_RATE="3e6" SATNOGS_ANTENNA="RX" SATNOGS_GAIN_MODE="Settings Field" SATNOGS_OTHER_SETTINGS="LNA=10,MIX=7,VGA=11" |
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| LNA: nooelec | LNA: nooelec |
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| Antenna: Winkler Spezialantennen, UHF Turnstile | Antenna: Vinnant, UHF Turnstile |
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| Frames decoded: 11 | Frames decoded: 3 |
Switched antenna's
| RX RTL-SDR Station 1696 | RX Airspy Mini Station 431 |
| Antenna: Vinnant, UHF Turnstile | Antenna: Winkler Spezialantennen, UHF Turnstile |
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| Frames decoded: 8 | Frames decoded: 21 |
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| Frames decoded: 10 | Frames decoded: 40 |
3 element Yagi antenna prototype
This antenna is currently connected to SatNOGS groundstation 2176
3 element Yagi by RA3TOX antenna.
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3 element Circular polarisation Yagi prototype.
We have combined two 3 element yagi antenna and are 1/4 lambda apart, lets see how this will perform.
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Setup April 23, 2022
Setup Jan 14, 2023
Left 9 elements, DK7ZB, middle 3 elements RHCP and right 3 elements linear. Follow this link to compare some receptions. The same satellite at the same time with different antennas.
Update: setup September 22, 2023
An overview of the SDR's currently in use, the outside antenna's and the stations running the SatNOGS client software.
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