[Elecraft] K3 Below 500 KHz RX Antenna

[Jim Brown]

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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