[amsat-bb] AirSpy Mini VS Funcube Dongle

[Paul Andrews]

AMSAT Community,

I have the same problem and would really appreciate any information on
a fix.    I have read about the origin of the DC Offset problem but I
don't see any way to correct the problem.

I'm a happy owner of three (3) Funcube Dongles.  One of the best
values in SDR equipment.

73 - Paul - W2HRO



On Mon, Oct 23, 2017 at 7:53 AM,  <vk4tec at tech-software.net> wrote:
> How can I get rid of this DC spike in the Funcube Dongle ?
>
> Andrew
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces at amsat.org] On Behalf Of
> vk4tec at tech-software.net
> Sent: Monday, 23 October 2017 9:13 PM
> To: AMSAT <amsat-bb at amsat.org>
> Cc: 'Australian APRS Users' <ozaprs at aprs.net.au>
> Subject: [amsat-bb] AirSpy Mini VS Funcube Dongle
>
> Signal Comparison of AirSpy Mini vs Funcube Dongle PRO+
>
>
>
> 432.440 MHz
>
>
>
> AirSpy Mini SDR 3/6 MHz
>
>
>
> IF = 9
>
> Mixer = Max 15
>
> LNA = Max 15
>
>
>
> Noise Floor -80 db
>
> Signal Peak -50 db
>
> S/N = 30dB
>
>
>
> Funcube Dongle Pro + 192 KHz
>
>
>
> LNA = Yes
>
> Mixer = Yes
>
> IF Gain = 11
>
>
>
> Noise Floor -80 dB
>
> Signal Peak = -35 dB
>
> S/N = 45 db
>
>
>
> RTL-SDR Dongle 2 MHz
>
>
>
> Did not compare at all - Noise Floor -50 dB / Bad S/N
>
>
>
> HackRF
>
>
>
> Did not compare - was more a GNUradio Tool
>
>
>
> The Funcube Dongle was 15 dB better than the AirSpy Mini
>
>
>
> But remember Fincude SBR is 192 kHz and AirSpy Mini is 3 or 6 MHz
>
>
>
> Best: Funcube Dongle Pro +
>
>
>
> Andrew
>
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> _______________________________________________
> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions expressed
> are solely those of the author, and do not reflect the official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb