Robert made a careless statement that is misinterpreted easily in his
enthusiasm. Bob will correct it! ;-).
There is one A/D in the 6500 receive system. That feeds one FPGA which
digitally gives us 4 slice receivers that can be sent to the DSP chip for
further processing.
The 6700 has two AD's in front of the LARGER FPGA. Out the door this
configuration will support up to 8 slices in a fantastic collection of
forms. I am like everyone else here. I am excited. But unlike many here,
this is the radio I knew could be done in the fullness of time. It is
here and it's ultimate potential is limited mostly by our imagination.
Sorry if the original was confusing and if there is still confusion, I
apologize.
David, the radio has a large and complex RF switching capability,
tremendous compute power inside, ethernet interface to your shack and
world.
I am so proud to be able to contribute on a brand new code base, doing
things we could only dream of before.
For the US friends, have a great memorial day weekend!
Sent from my Verizon Wireless Droid
-----Original message-----
From: Robert McGwier <[email protected]>
To: David Painter <[email protected]>
Cc: flexedge <[email protected]>
Sent: Fri, May 25, 2012 04:07:53 GMT+00:00
Subject: Re: [FlexEdge] [Flexradio] Differences between the 5K & 6K ?
All slice receivers will be independent and the "SDR" which follows will
set the mode, etc. There is a software limitation on the subreceivers in
PSDR that has more to do the limitations imposed by the way audio was
delivered in the, system than, it had to do with the SDR code and the way
the control surface was implemented in the GUI.
The limitations of the slice receivers are that in the 6700, four of the 8
are hooked to one AD and therefore hooked to one antenna and the other 4
are hooked to a different AD and to a separate antenna source. For
dynamic range and IP3 enhancements the two different AD can be hooked
together to the same antenna.
The bottom line is the answer is yes, what I said is right and I hope the
elaboration helps and doesn't confuse.
Bob
On May 24, 2012 5:59 PM, "David Painter" <[email protected]>
wrote:
Bob,
That statement is only partly true...isn't it??
Its true that in PSDR we have a multiwatch facility but it does not
support independent mode/filters etc.
Will each of the 8/4 slices in the 6700/6500 be capable of supporting
multiwatch/mutireceivers with independent mode/filters etc???
There is no multiwatch functionality in the second receiver at all,
although its been promised for many years, let alone independent
mode/filters etc
G4PNX - David
----- Original Message ----- From: "Robert McGwier" <[email protected]>
To: "Jerry Flanders" <[email protected]>
Cc: <[email protected]>
Sent: Thursday, May 24, 2012 10:03 PM
Subject: Re: [Flexradio] Differences between the 5K & 6K ?
In the 6700, there are 8 slice receivers but each of those will be
capable
of supporting multiple sub RX as in PSDR. We have not decided how many
software receivers to run on the DaVinci per slice and if we did, how
you
might use them.
Right now, I want one per slice to be perfect.
Bob
On May 24, 2012 11:44 AM, "Jerry Flanders" <[email protected]>
wrote:
OOPS! I just re-read the PDF brochure: "Slice Receivers allow you to
simultaneously visually and audibly monitor multiple frequencies within
the
same band or multiple bands ". Looks like we will have audio to use.
Multiple means at least 2, and maybe 4/8. I don't see the hardware
connection points, so maybe we will have audio streaming over the
ethernet
to the PC client. My error.
Jerry W4UK
At 10:10 AM 5/24/2012, Jerry Flanders wrote:
At 09:51 AM 5/24/2012, Tony Estep wrote:
On Thu, May 24, 2012 at 7:26 AM, W1JCW <[email protected]> wrote:
> ....wanted to know what significant gains there would be...
============
John, a significant gain is that the new design can receive several
slices
of spectrum at once. In other words, you can run a number of the
lightweight display/control windows at the same time, each pointing to
different frequency slices. They can be on different bands, modes,
etc.
We know that reception as panadaptor views of those 4-8 slices are
planned, but we don't know if we will have audio from 4-8 "receivers"
available for use in some worthwhile way. Might be disappointing to
assume
that ordinary functions will all be available in an extraordinary
radio,
then find they are not.
Jerry W4UK
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