[Premium-Rx] Longwave Receiver Recommendations?

[Chuck Urmson]

Al raises an interesting point.  A tuned loop is one of the best ways of 
optimizing low frequency reception but there are two issues that I 
haven't seen elegantly resolved:

1. Its easy to build a tuned loop to cover a couple of octaves but there 
are an awful lot of octaves down there.

2. At very low frequencies the Q of a tuned loop is such that the 
bandwidth is sometimes too narrow for the signal you are trying to resolve.

Does anyone know of any good solutions to the above issues? Links to any 
papers/articles would be be appreciated.

Regards,
Chuck EA8DBU/M1DPD


Remember, plants are people too.

On 02/04/2020 16:40, Al Klase wrote:
> LOCATION, LOCATION, LOCATION  -- ANTENNA, ANTENNA, ANTENNA
>
>  * Loops are a good bet if you don't have a lot of room.
>  * A tuned loop will give you front-end selectivity.
>  * Otherwise, most of these receivers with broadband front ends, might
>    need a low pass filter on the front end.
>  * I don't think there are any magic receivers.
>
> My two cents,
> Al
>
>
>