[hpsdr] Status of Hermes Gigabit
Darren Long
darren.long at mac.com
Thu Apr 30 15:23:27 PDT 2015
Neal,
Sometimes I dream of advancing the art! Generally, I'm lucky if I add
some small feature to some software that I use and perhaps nobody else
does. It seems to me that I'm embarking on a journey of exploration and
you are stuck in a rut. I don't feel the need to convince you of
anything. You're not going to be the one to implement the gigabit PHY in
the firmware.
73 OM.
Darren, G0HWW
On 30/04/15 23:11, Neal Campbell wrote:
> Hi Guys,
>
> What can I do with Gigabit ethernet that I cannot do now or what will be
> instantly recognizable as better functionality?
>
> I use my radios as radios (chasing dx, working digital modes and the odd
> rtty contest here and there)? I honestly do not see what I will miss by
> having the guys focus on other new features/modes/devices/radios than
> the current implementation.
>
> I actually think they are looking forward to the next generation of
> HPSDR's card stack. What they did 5 years ago ushered in the current
> radios we are enjoying.
>
> I maybe wrong so let know what I am missing in using my radio?
>
> 73
>
>
> Neal Campbell
> Abroham Neal LLC
>
>
>
> On Thu, Apr 30, 2015 at 6:00 PM, Darren Long <darren.long at mac.com
> <mailto:darren.long at mac.com>> wrote:
>
> 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>
> > <mailto: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>>
> > > <mailto: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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