Did anything ever come of this, or did the discussion that followed lead
into nothingness (everyone wanted a different feature or schematic)?
I'd really be interested in this and would very much like to do the Tayloe
detector at 2 meters where it should really shine! But, technology does not
allow frequencies that high at this time.
I'd still like to play at lower frequencies with the existing technology
however.
If the DDS/PLL issue is preventing this PCB from becoming a reality, I'd
suggest designing a single board with the Tayloe mixer on it and a second
identically sized board with the DDS/PLL on it. If one just wants the DDS
(only) they can put a jumper in to bypass the PLL part of the board. If one
wants both, they can insert the PLL components as well. If both boards were
the same size, they could be stacked on short spacers to keep the overall
size of the assembly down.
If someone wants to roll their own LO, they need only order the detector board.
Has anyone asked Flex Radio if they will sell the SDR-1000 boards
separately (either bare boards or pre-assembled)?
What say?
Art
At 03:33 PM 10/17/2004, you wrote:
>I've been monitoring this group for some time, as I have a keen interest in
>software radios and particularly the Tayloe detector approach to quadrature
>down conversion. I also have a strong professional background in RF design,
>and professional software tools to lay out PCB's. I have a vendor source
>that will make a 155 sq inch panel with as many individual boards as will
>fit in that space for about USD $90, including high quality silk screen and
>solder mask. The boards in a panel are seperated by "v-score" grooves that
>makes it easy to break them apart into nice clean individual boards.
>
>I'd be willing to lay out and order a board that incorporates the quadrature
>downconverter (and possibly a frequency source) if:
>1) We can get group consensus on a circuit;
>2) We can get buy-in (literally) from a big enough group to offset the costs
>
>If we assume that the PCB will be about 2" x 3", then we could probably fit
>20-25 boards into a panel. That comes out to about $4.00 for each board if
>we can get enough takers to cover the $90 panel cost.
>
>If there's enough interest in this, then I suggest that we form a seperate
>working group to iron out the design and arrangements.
>
>Any interest?
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