[aprssig] 9k6 Packet SDR

qrv at kd4e.com qrv at kd4e.com
Thu Mar 13 17:44:56 CDT 2014


Where are the break-points, in terms of bands, for maxing-out
digital throughput?

1 MB/s on 1GGHZ

What about using simplex networks and/or repeaters:
900MHz, 440, 220, 2m?

What about HF-direct 10m, 20m, 40m, 80m?

David KD4E

 > Bill Vodall wrote:
> WOW!!!     Thanks...    1 MB/s -  This has great potential...
>
>>> * The next step - if we can decode 9600 packet from a dongle - why not
>>> 19200?   The Kantronics data radios would generate that.   Why not
>>> 56K?   More?   What is the bandwidth limit of the dongle receivers?
>>> Since they're for TV I'd image it's 6 MHz...
>
>>
>> Let me feed your enthusiasm.
>>
>> The humble DTV dongle is being used successfully for aircraft ADSB reception
>> (at 1090MHz) where the data rate is 1MB/s. SDR-RTL on a Raspberry Pi can do
>> the decoding. The data is recordable for post-incident analysis. Take a look
>> here for further inspiration - http://sdr.osmocom.org/trac/wiki/rtl-sdr
>>
>> Ray vk2tv



-- 

David (NOT Dave) Colburn, KD4E - Nevils, Georgia USA

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