[amsat-bb] Re: Cheap and Easy SDR
iw5bsf at alice.it
Mon Dec 17 00:21:55 PST 2012
interesting to see this model ebay 25 MHz - 1.7GHz
73 de iw5bsf Roberto
----- Original Message -----
From: "Bryce Salmi" <bstguitarist at gmail.com>
To: "Mike Hoblinski" <hobergenix at sbcglobal.net>
Cc: "Amsat BB" <amsat-bb at amsat.org>
Sent: Monday, December 17, 2012 3:02 AM
Subject: [amsat-bb] Re: Cheap and Easy SDR
>I forgot to mention:
> The device I have now:
> and check out the RTL-SDR project where this all started (with the cheap
> USB sticks):
> On Sun, Dec 16, 2012 at 9:01 PM, Bryce Salmi <bstguitarist at gmail.com>
>> I literally just received mine yesterday and am using it now. A member of
>> the K2GXT radio club here at RIT (Rochester Institute of Technology) just
>> did a bulk order from China and each one cost around $15 but took a month
>> or two to ship. It seems to work well for the price and has a roughly
>> to 1.5 GHz tuning range. I haven't tested it but the receiver seems quite
>> flexible for frequency range but not very sensitive. I'll do some testing
>> next week. The antenna that came with it is pretty much junk and I think
>> uses a MCX connector so I just ordered some MCX to SMA adapters which
>> should let me seamlessly put a LNA and a good antenna on it which will
>> me really use it well. I really hope it lets me listen to the AMSAT birds
>> with ease, the LNA will be a must. Lastly, there are quite a few spurs on
>> the bands at first glance.
>> The circuit is pretty much the same as the FUNCube Dongle, it's even the
>> same IC inside. The difference is that these units are mass-produced and
>> are not optimized for operation on anything but strong TV stations. The
>> designer of the FCD has likely (I haven't seen the schematic) put great
>> effort into optimizing the device for ham use. The FCD also helps support
>> the FUNCube satellite.
>> Hope this helps.
>> On Sun, Dec 16, 2012 at 8:34 PM, Mike Hoblinski
>> <hobergenix at sbcglobal.net>wrote:
>>> I was reading the article in QST January magazine that details turning a
>>> DVB-T usb
>>> TV Dongle into a SDR receiver with coverage from 64 to 1700 Mhz with
>>> I was wondering how this differs with the Fun Cube Dongle being sold.
>>> article also
>>> shows how to extend coverage to the HF band. The TV Dongles sell for
>>> about 20 dollars
>>> on ebay.
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