[time-nuts] Antenna

Alex Pummer alex at pcscons.com
Tue Jul 8 17:38:43 EDT 2014


I have made a similar coil--antenna with remote fine tuning --no 
mechanical components, everything is going trough the coax cable
Alex

On 7/8/2014 1:39 PM, Magnus Danielson wrote:
> 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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