[hpsdr] PennyWhistle - Call for Comments

[John Nordlund]

I would vote for the kit form.  I have no problem with SMT assembly.

Keep it simple if the software can adjust for gain v frequency.

Penelope outputs with a BNC.  Makes sense to keep it the same.

YES I will buy it!   At least twice.


Regards..

AD5FU


As soon as I get home I'm going to make myself one of those tin foil
hats.  I think it should have a tall spike on top so it can be resonant
on the 70 centimeter amateur radio band.  When I see the aliens coming
over the hill for me I am not going to run away.  I plan to chuck a few
rocks at them before I run.

Graham / KE9H wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> All:
>
> Before I do a layout of the (hopefully) final
> version of PennyWhistle, I would like to call
> for comments.
>
> If this is something you would be interested in,
> please review...
>
> http://hpsdr.org/wiki/index.php?title=PENNYWHISTLE
>
> It has been updated with an "off the shelf" output
> transformer from Communications Concepts, as well
> as the power output versus frequency plots have
> been added.
>
> Questions:
>
> Do you prefer BNC versus the SMA connectors shown?
>
> Considering the differences in power output at
> 6 Meters versus HF, should a relay be added that
> would switch the output peaking between HF and
> 6 Meters, or is the performance with a fixed
> capacitor at one setting or the other adequate
> for your purposes?   (that is, keep it simple)
>
> Is a bare board kit preferable if it saves multiple
> months for availability?  Are you comfortable
> building a kit with about two dozen SMT parts?
>
> I have a suggestion from Phil H to add a feedback
> winding to (optionally) reduce gain and increase linearity
> when used as a driver for linears.
>
> I have a suggestion from Lyle J. to try the RD15HVF1
> in place of the RD16HFF1 transistors to increase
> performance at 6 Meters.
>
> --- Graham / KE9H
>
> ==
>
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