[hpsdr] Looking for guidance

[Berndt Josef Wulf]

G'day Phil,

again, many thanks for all your information.

I downloaded the ghpsdr3 respository and successfully built the applications 
on Ubuntu 10.04 and NetBSD-current. It required some tweaking of the Makefiles 
on the NetBSD platform.

A six slot Atlas backplane is now on order. I considered ordering the Mercury-
EU card at the same time, but wasn't sure if it works with Metis. What are the 
differences, if any, between the TAPR Mercury, Mercury-EU and the new batch of 
Mercury cards to be released soon?

Meanwhile, what is the cheapest way of getting USB for GHPSDR working whilst 
waiting for Metis? I don't want to invest to much in this as Metis is the 
future.

73, Berndt
VK5ABN







On 11/11/10 Phil Harman wrote:
***** High Performance Software Defined Radio Discussion List *****


>> * Will Metis allow for full remote operation of RX and TX?
>
> It's as remote as gigabit ethernet gets you.  Right now Metis only works 
> on a local segment, and does not route anything through a router.  This 
> doesn't necessarily have to be true, but consider that the data rate from 
> Metis can be immense.  Technically speaking, though, since it's standard 
> gigabit ethernet, you could use a fiber optic media converter and run 
> Metis as far away as the fiber could reach.  If you wanted to pay the 
> thousands of dollars for ZX optics, you could place Metis at the end of a 
> 70km link.
>

I can operate my HPSDR boards using Metis over my home network from a 
different room without any issues.

One possibility for the future is that Greg, ZL3IX, has modified the Mercury 
code to include the filtering and demodulation for a complete receiver.  He 
uses this, via an FM VHF link, for his remote 160m receiving site.   If we 
used such code with Metis then you would have a receiver that could run at 
say 8ksps and would be suitable for use over a slower speed 
network/Internet.  We could do something similar for Penelope.

I'm sure other options will become available as Metis gets into hands of 
more experimenters.  I know that John, G0ORX, has some exciting plans for 
his client/server ghpsdr3 code on Metis.

73 Phil...VK6APH 

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