Propagatie
- Live stream van het 3.5555 MHz baken door Hans, PA0EHG
- Propagatie metingen in de 80m band; door Hans PA0EHG
- Metingen aan het 3.555 MHz test signaal; door Koos PA0KDF
- Radio communication via NVIS; Ben A. Witvliet en Rosa Ma Alsina-Pagès
- Calculating Ionospheric Doppler shifts; Lynn, K. J.W.
- Modern Methods for Calculating Ground-Wave Field Strength Over A Smooth Spherical Earth; Robert P. Eckert
- Handbook on Groundwave propagation; Radiocommunication Bureau
Doppler shift
- Dopplergrams; Peter Martinez G3PLX
- SBSpectrum; M Greenman ZL1BPU
- Intro HF propagation and Ionosphere; M Greenman ZL1BPU
Noise
- Presentatie over Noise (RF-Seminar 2016); Hans PA0EHG
Smith Charts
- Smith Charts; F. Caspers, CERN
- Cursus Smith Charts; Prof. C. Furse, Univ Utah
- Smith chart software; Prof. F. Dellsperger
Meetapparatuur
GPIB / HPIB / IEEE488 interface
- Raspberry Pi using Agilent 82357B
- Raspberry Pi using NI USB-GPIB-HS
- KE5FX GPIB Toolkit
- Gee Whiz, GPIB-to USB Converter Elektor jul/aug 2012
- Gee Whiz rev 2 PCB and software update
- Rudis wiki GPIB page
- GPIB IEEE488 Basics Tutorial
- HP Tutorial Description of HPIB bus (pdf)
- Prologix GPIB interfaces
