On Sun, Jun 22, 2014 at 2:09 PM, Steve Ireland <vk6vz@arach.net.au> wrote:
>
> For those topbanders like Barry N1EU who are interested in SDR, the latest
> version of the PowerSDR/OpenHPSDR software and its associated firmware
> places the coding involved with CW generation inside the main FPGA
> associated with the HPSDR/Hermes/ANAN radio. The radio’s sidetone is
> generated completely in the FPGA and is not sent to PowerSDR, so there
> should be zero latency between a key press and the radio’s sidetone
> appearing.
>
> I haven’t tried this software on my HPSDR yet, but am looking forward to
> doing so, as this improvement apparently removes the last hurdle for a SDR
> transceiver to be a truly attractive alternative to the K3 etc for a
> serious CW DX/contest operator.
>
Steve, unfortunately the latest firmware/software hasn't addressed the cw
RECEIVE latency (I measured 160msec) which has always been the more
significant cw issue. There are no current plans to address this to the
best of my knowledge. This is a show stopper for serious cw contesting
with the OpenHPSDR radios. And we haven't spoken about ssb.
The Flex 6000 series has an order of magnitude less latency, which its
internal dsp architecture allows. Their software is slowly catching up
with their hardware and I expect a lot of contest activity from the Flex
6000's in the 2014-2015 upcoming contest season. The new Flex 6300 may
turn out to be a real bang for the buck super-star .
73, Barry N1EU
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