[TenTec] ground wave

[Sinisa Hristov]

Stuart Rohre wrote:
 
> With all due respect to Ron, there is plenty of new research, (and old
> experience from WW2) that ground wave on HF above the low bands is alive and
> well.  See my previous posting about communication in 30MHz range at 5 watts
> ground wave with new FLEX antennas as well as typical Ham Stick and
> verticals.  We have tested ground wave data links with Pactor 2 and similar
> all the way down to 13 MHz, and simply are awaiting further research money
> to build us a 40m FLEX antenna.   This is the Folded Conical Helical that
> squeezes four quarter wave elements into a wound conical shape to conserve
> volume and maintain efficiency from 60 to 91 per cent vs. size of cone
> height and frequency.   For 160M this translates to a cone 8 feet high over
> a ground plane on a patio.


Very interesting topic.
Would you recommend any additional reading?


73,

Sinisa  YT1NT, VA3TTN