[time-nuts] Antenna

Magnus Danielson magnus at rubidium.dyndns.org
Tue Jul 8 16:39:24 EDT 2014


Hej Poul-Henning,

On 07/08/2014 09:59 PM, Poul-Henning Kamp wrote:
> In message <53BC4B9F.6040302 at rubidium.dyndns.org>, Magnus Danielson writes:
>
>> I have a FS700 sitting here, but no antenna. There should be other
>> signals than LORAN-C/CHAYKA available, such as DCF77, MSF60 and the 162
>> kHz signal from outside Paris. It would be pretty straight-forward to
>> put up a frame and make a number of turns of wire, and put a low-noise
>> amplifier up in the attic. What existing projects should I look at or
>> take inspiration from?
>
> http://phk.freebsd.dk/loran-c/Antenna/

What is your loading on the coil? How many turns? Schematic?

I've seen this page many times, but I lack a little of those details. I 
want to get a little more details so I get a better feeling of what it 
takes.

As I want a broadband H-field antenna, I know that I need to do 
resistive loading, but what is a suitable value?

I know that there is a benefit in putting a E-field shield on it, but be 
careful not to close it as that would cause it to block H-fields.

Cooking up a low-noise amplifier for these frequencies seems relatively 
simple, but it is always nice to see what others have done.

Cheers,
Magnus


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