Miniwhip Antenna by PA3FWM

Nice description of a miniwhip SDR receive antenna

PA3FWM miniwhip

Old Callbooks

 Before the internet if you wanted to know the address of a HAM you would refer to the Paper Callbook.

Someone has scanned them for download at:

https://leehite.org/callbooks/

PI and SDR

 Raspberry Pi SDR Cyberdeck174301-raspberry-pi-sdr-cyberdeck

I/Q Signal Tutorial

 Here is a tutorial from GNU Radio describing I/Q signals.

I/Q Signal Tutorial

French national amateur radio society REF

REF Digital Library Available  French national amateur radio society REF have made available their digital library covering antennas and other ham topics. REF Library

AMSAT Live OSCAR Satellite Status Page

 AMSAT Live OSCAR Satellite Status Page

AMSAT Satellite Status

EME Station by Fred, AB1OC

 EME Station by Fred, AB1OC

Here is a nice 10-part blog post describing a EME station from design and planning through antennas on the tower.

EME Station Design and Construction