Hello Christian,
On Tue, 06 Mar 2012 17:49:02 +0100, "Christian Daniel -- maintech GmbH" cd@maintech.de wrote:
The RX is not a sensitivity-wonder. Perhaps a preamp?
I have to correct my previous posting, the Funcube has an LNA between antenna and the E4000 so the sensitivity numbers are not comparable.
But maybe it is possible to use a similar circuit.
Best regards, Dieter
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Arrrrrrrgh,
your package is still laying here... sorry... :((((((( (head -> desk)
Good to remind me - I'll bring it to the post office tomorrow, finally...
Yes, Stefan told me about the preamp on the Funcube - that's why I made the measurements. I guess, this means, that the OsmoSDR will get one as well...
Size is a problem tough...
Best regards, Christian
On 06.03.2012 18:47, Dieter Spaar wrote:
Hello Christian,
On Tue, 06 Mar 2012 17:49:02 +0100, "Christian Daniel -- maintech GmbH" cd@maintech.de wrote:
The RX is not a sensitivity-wonder. Perhaps a preamp?
I have to correct my previous posting, the Funcube has an LNA between antenna and the E4000 so the sensitivity numbers are not comparable.
But maybe it is possible to use a similar circuit.
Best regards, Dieter
- -- - --------------------------------------------------- | maintech # Dipl. Inf (FH) Christian Daniel | | GmbH ### Otto-Hahn-Str. 15 · D-97204 Höchberg | - --------------------------------------------------- | AG Würzburg, HRB 8790 Tax-ID DE242279645 | - --------------------------------------------------- | http://www.maintech.de cd@maintech.de | - ---------------------------------------------------
Hi,
Yes, Stefan told me about the preamp on the Funcube - that's why I made the measurements. I guess, this means, that the OsmoSDR will get one as well...
Size is a problem tough...
You could use a SPF5043Z made by RFMD. It is a tiny MMIC in a SOT343 package. With a proper PCB layout of the power plane it should be very easy to integrate it in the OsmoSDR PCB.
PS.: I really would like to see/do some tests on the influence of the inductively of the header pins (including jumper) within the signal path.
Ulf
-
Christian Daniel -- maintech GmbH -
Dieter Spaar -
Steve Markgraf -
Ulf Wetzker