Wednesday, 20 February 2019

First geostationary amateur satellite succesful

Es'hail-2


Web SDR:


More info:



Es’hail-2 was launched in 2018. This geostationary satellite (fixed at a distance of appr. 36.000 km from earth) carries two “Phase 4” radio transponders operating on radio amateur frequencies (2400 MHz uplink, 10450 MHz downlink). A linear transponder has a bandwidth of 250 kHz and is intended for conventional analogue radio communications. Another transponder has a 8 MHz bandwidth and is designed for experimental (DVB) amateur television.


First ham QSO’s have been realized.

E.g., G0MGX was able to receive the satellite’s signals with an (ordinary) satellite dish:






This how ON4AOL realized the SAT-link:

https://drive.google.com/file/d/1dgVmRV9FQWA4R9NdJ3DHUNmoyOTS6Nd8/view


Wednesday, 6 February 2019

LM3886 amplifier

I made some progress today:



Off-topic:

Veere