[hpsdr] Pennywhistle with feedback

[Chris Smith]

Chris

I simply built a 5.8dB pad in a "mouse coffin" alloy box to use between my Penelope without the transformer mod (i.e. the max o/p is 350mW) and my PW so that the input to my CCI/Motorola AN 762 amp gets the right input for 100W out.

Cheers

Chris G4NUX


On 2 Jun 2010, at 18:42, Chris Day wrote:

> ***** High Performance Software Defined Radio Discussion List *****
> 
> I'm about to build my Pennywhistle, but the stock values will probably give me too much power for my HFProjects SuperPacker Pro 100W amplifier, which only wants 5W. Has anyone experimented with the optional feedback on the Pennywhistle? What should be used for the secondary winding? I figure it would be wise to put that in place when the transformer is constructed. I'll try to dig up the method for calculating the R2/R12 resister values, but any hints would be appreciated. Thanks.
>  
>  
> Chris Day
> AE6VK
>  
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