[hpsdr] PennyWhistle Low End

[Graham Haddock]

Bill:

The transformers in the Pennywhistle are at their lower performance limit
at 1.8 MHz.

If you want to go lower, you will need to redesign/rewind the transformers,
both input
and output.  You may also have to increase the values of some of the bypass
capacitors
to maintain their effectiveness, depending how low you want to go in
frequency.

--- Graham / KE9H

==


On Wed, Jul 9, 2014 at 6:17 AM, Bill Dreschel <dreschel at verizon.net> wrote:

> ***** High Performance Software Defined Radio Discussion List *****
>
>
>   Hi,
> What is the low end frequency roll off of the PennyWhistle?
> For instance, what is the gain like at 500kHz to 1.5MHz region?
> This is for a CW non-radio application of the amp. Thanks!
> Bill
>
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