[Fourlanders] SDR info

[John Ackermann N8UR]

By the way -- I just received my HPSDR/TAPR "Hermes" board that is 
essentially all the individual boards of the HPSDR system on a single 4 
x 6 inch card.  RX and TX from 50 kHz to 55 MHz, incredible dynamic 
range and other receiver characteristics, and 0.5W output with 3rd order 
IMD down 50dB: http://openhpsdr.org/wiki/index.php?title=HERMES

It's full duplex over any split with separate RX and TX antenna 
connectors available.  Talks to the computer via ethernet so it can be 
remotely located, and there is a companion 15W PA and antenna tuner in 
the works.

I'm thinking that one of these with along with a DEMI 2M transverter 
would make a really nice "prime mover" for a VHF/UHF/microwave station. 
  One interesting idea is that by cleverly choosing IF frequencies for 
the transverters, you could have RX monitor windows open for several 
bands simultaneously.

The original TAPR production run is sold out, but there's a fellow in 
India who is producing the boards as well as his own line of enclosures, 
amplifiers, etc.  (http://www.apache-labs.com)

John
----
On 10/26/2012 10:44 AM, Bob Lear wrote:
> I got this from the Roadrunners reflector.  Thought there might be some
> interest here in these SDR developments.  It will obviously generate more.
>
> Bob
>
> SDR
>
> Technical Web Site of the Week - Software-defined radio is rapidly
> approaching a tipping point where it becomes so affordable it will start
> crowding out traditional radio architectures. For example, this Slashdot
> story notes that at the ToorCon hacker conference in San Diego, Michael
> Ossmann of Great Scott Gadgets revealed a beta version of the HackRF
> Jawbreaker, It can both read and transmit signals from 100 MHz to 6 GHz.
> At Ossmann's target price of $300, the versatile, open-source devices
> would cost less than half as much as currently existing software-defined
> radios with the same capabilities. The Defense Advanced Research
> Projects Agency (DARPA) pitched in $200,000 last February as part of its
> Cyber Fast Track program.
>
> http://slashdot.org/story/12/10/22/0518231
>
> http://www.forbes.com/sites/andygreenberg/2012/10/19/darpa-funded-radio-hackrf-aims-to-be-a-300-wireless-swiss-army-knife-for-hackers/
>
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