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RE: ***CECI EST UN SPAM*** RE: LF: Ferrite RX antennas

from [victor13] [Permanent Link][Original]
To: <[email protected]>
Subject: RE: ***CECI EST UN SPAM*** RE: LF: Ferrite RX antennas
From: <[email protected]>
Date: Sun, 2 Oct 2011 08:45:45 +0200
Importance: Normal
In-reply-to: <[email protected]>
Reply-to: [email protected]
Sender: [email protected] 
Yes ,

hf is used for more things than amateur radio communication.The filters are
used to read out a infrared detector-arrey(freq multiplexing).Workingtemp of
detector,filters and preamp is 50 mK.(detectors and squid preamp don't work
at all at higher temp).Very strange techniques but they do work.

73

Victor



-----Oorspronkelijk bericht-----
Van: [email protected]
[mailto:[email protected]]Namens John Rabson
Verzonden: zaterdag 1 oktober 2011 14:56
Aan: [email protected]
Onderwerp: Re: ***CECI EST UN SPAM*** RE: LF: Ferrite RX antennas



On 1 Oct 2011, at 08:59CEST, <[email protected]> <[email protected]>
wrote:

> Hi Stefan,
>
> at the institute I am working we are using lithographic superconducting
coils with special NPO capacitors In the range from 100KHz to 5MHz Q up to
5000 is optained....
>
>
> 73
>
> Victor

Onnes-tly?

John F5VLF
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