6 Mar
2012
6 Mar
'12
7:47 p.m.
Hello Christian,
On Tue, 06 Mar 2012 17:49:02 +0100, "Christian Daniel -- maintech GmbH"
<cd(a)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
--
Dieter Spaar, Germany spaar(a)mirider.augusta.de
6 Mar
6 Mar
6:59 p.m.
New subject: OsmoSDR sensitivity
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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(a)maintech.de> wrote:
- --
- ---------------------------------------------------
| 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(a)maintech.de |
- ---------------------------------------------------
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 -----BEGIN PGP SIGNATURE-----
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10:17 p.m.
New subject: OsmoSDR sensitivity
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
4456
days inactive
4456
days old
3 comments
4 participants
participants (4)
-
Christian Daniel -- maintech GmbH -
Dieter Spaar -
Steve Markgraf -
Ulf Wetzker