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Date: Wed, 04 Aug 1999 18:27:05 +0100
To: rsgb_lf_group@blacksheep.org,  rik.strobbe@fys.kuleuven.ac.be
From: "Andy Talbot" <drassew2@interalpha.co.uk>
Subject: Re: LF: GBR at 16kHz
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Reply-To: rsgb_lf_group@blacksheep.org
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Rik - 
I have the means to monitor the 16kHz signal continuously at a very low
sampling rate, ie 3.90625 Hz plus multiples higher, and store several hours
of I/Q sampled raw data to disc.  From these samples, the phase of the
signal and doppler shift etc can be recovered.   However, at only 200km from
the transmitter I am not sure of the value of monitoring from my location.

Andy Talbot G4JNT


>>>From Jean-Jaqcues Delcourt, ON5PG, who is working as scienticif researcher
>at the Belgian Royal Meteorologic Institute I received following request :
>
>>My dear Rik,
>>
>>Have you the possibility of monitoring the GBR signals on 16 KHz ???
>>
>>We have a very special pattern during the sunrise at an altitude of 80 Km 
>>between 3 et 5 UT .
>>
>>We ignore if it is an interference between the sky wave and the ground wave
>>or an absorption only due to a specific chemical reaction . 
>>
>>If it is a sky wave - ground wave interference , you certainly have not the
>>same as us ....
>>
>>Many thanks .
>>
>>Jean Jacques .
>
>Unfortunately my RX is limited to 30kHz, but I suppose that a lot of
>readers of this reflector can tune down to 16kHz and might be interested to
>help.
>
>Those who have the means and want to help Jean-Jacques (by recording GBR at
>sunrise) are kindly requested to send me a short mail. I will collect all
>responses and forward them to Jean-Jacques so he can send you more
>detailled information.
>
>I know this request is a bit 'out of line', but  I think that it is good
>for the image of amateurradio if we can cooperate in scientific projects.
>
>73, Rik
>
>
>
>Rik Strobbe  ON7YD
>rik.strobbe@fys.kuleuven.ac.be
>Villadreef 14  B-3128 Baal  BELGIUM   (JO20IX)
>
>