Thanks for this link, Joe. The text contains some EXCELLENT analysis of
how electrically short antennas work, AND how noise propagates. This is
MUST READING!
73, Jim K9YC
On Sat,7/18/2015 1:11 PM, Joe Subich, W4TV wrote:
Actually, if you want cheap and effective look at the PA0RDT mini-whip
active antenna:
http://dl1dbc.net/SAQ/Mwhip/Article_pa0rdt-Mini-Whip_English.pdf
The active antenna is relatively small and easy to build with no
particularly expensive or difficult to find parts. Some builders
have even used MPF-102 and 2N3866 or 2N3904 transistors instead of
the U310 and 2N5109.
73,
... Joe, W4TV
On 2015-07-18 3:08 PM, Don Wilhelm wrote:
Phil,
Cheapest and easiest and effective do not always go together - pick one
or two of those properties. Easiest would be a good active antenna,
like the one available from Clifton Labs.
Cheapest would be a multi-turn loop on a frame - search the web for
homebrew designs. - it needs to be rotated, so that may make it a bit
more complex, but it can have a narrow field of view which is good for
eliminating noise.
73,
Don W3FPR
On 7/18/2015 2:52 PM, Phil Hystad wrote:
What is the cheapest easiest although effective RX antenna for
listening to whatever below 500 KHz with a K3 and the new K3SYNA board?
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