[hpsdr] Penny PTT unkeying spike - T/R sequencing?

[Dick Faust]

You might look at the Tokyo High Power HL-45B information, a design that 
is very similar to the  Pennywhistle but provides 45W using a higher 
power / different package version [RD30HVF1] in the Mitsubishi family.

FCC info including the test report and 10 other documents [Sch, Block 
Diag, manual etc] is at:
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https://fjallfoss.fcc.gov/oetcf/eas/reports/ViewExhibitReport.cfm?mode=Exhibits&RequestTimeout=500&calledFromFrame=N&application_id=473548&fcc_id='UB9HL-45B 
<https://fjallfoss.fcc.gov/oetcf/eas/reports/ViewExhibitReport.cfm?mode=Exhibits&RequestTimeout=500&calledFromFrame=N&application_id=473548&fcc_id=%27UB9HL-45B>'


If that page will not link do a search for "UB9" which is THP's "Grantee 
Code" at this search site:
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https://fjallfoss.fcc.gov/oetcf/eas/reports/GenericSearch.cfm


Dick Faust K9IVB

Tom Cathey wrote:
> ***** High Performance Software Defined Radio Discussion List *****
> snip
>
> That said, I'm finding Penny's output IMD to be so clean, I'm having trouble
> finding a comparable pre-linear amplifier to use. I've tried MRF-150's and
> might build up a class A, two-stage  tube linear with negative RF feedback.
> All I need is about 30W pep to drive my KW amp system, which is already
> about -40db 3rd IMD. The run of the mill -30db IMD SS amps don't seem to cut
> it.
>   

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