[hpsdr] Status of Hermes Gigabit

Thu Apr 30 15:00:32 PDT 2015

Neal,

I wouldn't be so sure about that. The unrealised potential of the
ANAN-100D wasn't a matter of discussion. That's what it is for me, a box
full of potential.  There was no point discussing features with G0KSC,
as I'd explained to him that I wouldn't be using any windows software
and would muddle my own way through making it "do stuff" as best I could
with whatever software I could muster or bodge.

I've been using gnuradio and assorted hardware for years, myself.  My
old USRP-B100 will fill a USB2.0 bus, as will my HackRF Jawbreaker
kindly sent to me for free by Michael Ossman. Both of them are faster
than a 100mbit LAN. I wonder why Ettus ever bothered switching to USB3.0
for their newer USRP devices. Gigabit Ethernet wasn't fast enough for them.

I really don't understand your position here. To me it seems a
no-brainer. I was under the impression that the need for gigabit
ethernet was a fore-gone conclusion with the proposed DFC technique.

What do you do with your radio? I have no idea what I'm going to end up
doing with mine yet. My imagination is still racing.  However, I can see
no reason why anyone would want to artificially limit the potential of
such a device.

Cheers, 73

Darren, G0HWW

On 30/04/15 22:28, Neal Campbell wrote:
> Darren,
> 
> You might not know that I sell 'high performance, low latency' computers
> (my medium system uses the i7-4790, 256gb ssd,  1TB hard drive and it
> flies).
> 
> I have been using SDRs as my primary rig (my only rig) for almost 7
> years and I just don't see what 1GB gonna do. You could widen the sample
> frequency but do you really need more than 382KHz?
> z
> i understand that there was scuttlebutt being discussed probably when
> you bought your radio and so you would like to have it delivered, but  I
> honestly think it could cause more problems than solve.
> 
> 
> 
> Neal Campbell
> Abroham Neal LLC
> 
> 
> 
> On Thu, Apr 30, 2015 at 4:57 PM, Darren Long <darren.long at mac.com
> <mailto:darren.long at mac.com>> wrote:
> 
>     Sure. Some systems won't be able to cope with it.  What about the High
>     Performance ones?  This machine with its water-cooled I7 4770K CPU and
>     Nvidia GTX760 with 1152 CUDA cores doesn't bat an eyelid at a 100 m-bit
>     pipe with 4 384kHz receiver slices feeding cudaSDR. It is crying out for
>     more. Also, who wouldn't prefer lower latency?
> 
>     Darren, G0HWW
> 
> 
>     On 30/04/15 21:46, Neal Campbell wrote:
>     > I think that gigabit ethernet is a "gee-whiz" feature that, if it worked
>     > to its billing, would swamp the lan not to mention wifi users.
>     >
>     > I understand the excitement of wondering if something can be done but
>     > its just not a feature that will benefit anyone but the geekers who want
>     > to say it uses it!
>     >
>     > JMHO!
>     >
>     > 73
>     >
>     >
>     > Neal Campbell
>     > Abroham Neal LLC
>     >
>     >
>     >
>     > On Thu, Apr 30, 2015 at 4:27 PM, Darren Long <darren.long at mac.com <mailto:darren.long at mac.com>
>     > <mailto:darren.long at mac.com <mailto:darren.long at mac.com>>> wrote:
>     >
>     >     ***** High Performance Software Defined Radio Discussion List
>     *****
>     >
>     >     Hi all,
>     >
>     >     Having just bought an ANAN-100D, for use with my Linux box
>     here, I am of
>     >     course interested in realising the full potential of the
>     hardware, so
>     >     I'm definitely interested in gigabit ethernet support.
>     >
>     >     I was listening to a teamspeak recording that discussed the
>     extra power
>     >     load of the gigabit PHY.  I hope the Angelia in the ANAN-100D
>     is able to
>     >     comfortably cope with this.
>     >
>     >     Cheers, 73
>     >
>     >     Darren, G0HWW
>     >
>     >     On 29/04/15 21:46, Steve Haynal wrote:
>     >     > ***** High Performance Software Defined Radio Discussion
>     List *****
>     >     >
>     >     >
>     >     >
>     >     > I received a couple of private responses to my question and
>     want to
>     >     > summarize the responses for the list in case anyone else has
>     the same
>     >     > question.
>     >     >
>     >     >  * Gigabit is working on a couple of test bench setups.
>     >     >  * When running gigabit, an additional 350mA is required
>     from the 5VDC
>     >     > which the Hermes does not currently supply.
>     >     >  * There has been little demand for gigabit as most users only
>     >     have 100
>     >     > Mbit/s setups in the shack and multiple receivers fit fine
>     in that
>     >     > bandwidth.
>     >     >
>     >     > 73,
>     >     >
>     >     > Steve
>     >     > KF7O
>     >     >
>     >     >
>     >     >
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