[amsat-bb] FalconSat-3 sig level to decode

Ken Swaggart k.swaggart at charter.net
Thu Oct 12 22:17:08 UTC 2017

I'm using  the AirSpy (not mini) with SDR#. Doppler tuning with homebrew
software. Haven't noticed lost packets when the SDR freq changes, but will
be on the lookout for that.

The audio loopback is Virtual Audio Cable. 

SSB Preamp

Rotator is a G5500 and LVB Tracker controlled  by my homebrew software. (I
really like the LVB Tracker!)

Sound modem is Dire Wolf which feeds APRS-IS.  At the present time I'm just
watching the packets scroll by on the Dire Wolf display. My main goal was to
Igate the FalconSat-3 packets.

Ken, W7KKE

-----Original Message-----
From: Andrew Rich [mailto:vk4tec at tech-software.net] 
Sent: Thursday, October 12, 2017 15:07
To: Ken Swaggart <k.swaggart at charter.net>
Cc: AMSAT -BB <amsat-bb at amsat.org>; Australian APRS Users
<ozaprs at aprs.net.au>
Subject: Re: [amsat-bb] FalconSat-3 sig level to decode

Hi Ken 

I thought you might have good antenna 


So your on windows 

+ AirSpy Mini
+ SDR#
+ What audio loop back
+ Preamps
+ Rotator - from what program
+ What Sound modem ?
+ What APRS / TNC style program

- Andrew - 

> On 13 Oct 2017, at 4:12 am, Ken Swaggart <k.swaggart at charter.net> wrote:
> On this morning's FalconSat-3 pass, I checked the signal required to 
> decode using Dire Wolf. It was 18 dB SNR, so that's roughly S3 +/- 
> above the noise floor.
> RX setup: AirSpy SDR, SDRsharp, mast-mounted preamp, 15  X 15 X Yagi,
> 73,
> Ken, W7KKE
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