George wrote:
Is anyone aware of a small directional antenna that is useful for direction
finding at VHF? My understanding is that Doppler antennas work only while
moving (true?) and what I need is a directional antenna that can be used
while at rest. Low efficiency and relatively broad main lobe are OK as long
as physical size is small.
Thanks,
George K6GW
Have a look at the HB9CV designs. The physical size is quite small and
mechanical construction is not difficult. I have a commercial one for
70cm at it works well and is small and easy to work with.
Here a link to a fellow ham who publishes instructions and drawings:
http://www.davidkearns.co.uk/g8tti/HB9CVdetails.htm
Markus
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Markus Baertschi Phone: ++41 (21) 807 1677
Bas du Rossé 14b Fax : ++41 (21) 807 1678
CH-1163, Etoy Email:
Switzerland Homepage: www.markus.org