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Re: LF: Opera Monitoring 500 off air & 477 via Delft

To: [email protected]
Subject: Re: LF: Opera Monitoring 500 off air & 477 via Delft
From: Stefan Schäfer <[email protected]>
Date: Sun, 24 Jun 2012 18:10:20 +0200
In-reply-to: <[email protected]>
References: <2EA53566F2544F218747891F118768B1@AGB> <[email protected]>
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Hi Jan,

Thanks for the info.
Yes, he seems to have a 500 kHz LO (?) due to the black gap at 500 kHz which seems to come from his lower cutoff frequency of the converter. If a 2 MHz ( /4) xtal is used, maybe a 1.8432 MHz xtal may be the alternative...

73, CU, Stefan

Am 24.06.2012 17:38, schrieb pa3abk:
Received an email from Wouter PA3WEG.

The WebSDR is x-tal driven, but he will look at it to get the unit somewhat lower. He intends to widen the bandpass filter in such it will catch the lower end more effectively.

In future the SDR will receive new hardware for VHF/UHF or  4 & 6m
Also 137kHz will receive some attention.

His main problem is time....
At the moment he is very busy with the FUNcube satelliet project.
(funcube.org.uk)

Jan/pa3abk


NNNN
On 16-6-2012 18:02, Graham wrote:
Something just  noticed , 477 is  inside the  Delft-web-sdr range .... !
Monitoring   500K  off  air  and  477  via  Delft
can run x2 sdr and monitor 500/477 , but with x 2 noise .should work ?
G..
http://websdr.pa3weg.nl/




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