Updated page with reply from Ben Witvliet.
In English and Dutch translations because of possible bad translator results.
I am very great-full to Ben for his kind and professional reply on my questions.
NVIS propagation research thoughts with reply Ben Witvliet (English)
NVIS circulaire polarisatie overdenkingen PA3ECT met commentaar Ben Witvliet (Dutch)
The Piligram fase Hartley DC transceiver and the Piligram Pro, newer design by Russian amateurs.
Based on SDR radio technics but realised as a stand alone transceiver.
Several add-on modules available.
Also SDR outlets I and Q available.
CAT interface
25 Watt PA module
DDS dedicated synthesizer module
And more….In main menu or link
In menu NVIS circulaire polarisatie onderzoek een nieuwe pagina met overdenkingen t.a.v. circulaire polarisatie onderzoeken van medewerkers TU Twente en AT.
Link to EuCAP2015 – S3 – Witvliet (4×3) – Thu 16 April 12h30
Article about NVIS as backup
Added new links in NVIS antennas 80 meter.
One about polarization effects with circular polarization
One about measurements with co located dipoles.
One about NVIS back in business.
The critical frequency map.
And the Dourbes digisonde in Belgium.
This page , a rewritten lecture by Günther DJ8CY , with theme radio communication difficulties in WW2 and the use of NVIS and magnetic loop antennas. The source page is in German language. There is also a page with Dutch translation. Please use the Dutch page with the translator.
Old homepage offline.
The new site is ready, Will take the old homepages soon offline. Hope you like it.
The site is now half ready, try this week to finish.
Added YouTube plugin on many pages.