Useful HAM links:
F5LEN Webcluster
Tropo forcast
Rain Radar for 10GHz RS
QSO Realtime maps (Sporadic E, ...)
WEBSDR
KIWI SDR PA0RDT
137KHz Grabber DF6NM
DL0AO LF + MF Grabber
RSGB LF group (reflector)
QO 100 DX club News
QO-100 / Es'hail-2 Wideband Spectrum Monitor
Eshailsat 2 NB transponder Websdr UK
ON4KST Microwave chat
Microwave and VHF/UHF beacons
HB9Q Logger
Moonnet reflector
OZ9AAR EME SW Tools, etc.
ROPEX 137KHz TX - Schematic 1v2
ROPEX 137KHz TX - Schematic 2v2
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