[hpsdr] AutoSW 10MHz and 122MHz Buffer for Hermes
Dick Faust
k9ivb at cox.net
Sat May 24 14:38:20 PDT 2014
I wanted a way to get the 122.88MHz clock [called "125MHz" on schematic]
out of the Hermes similar to the Mercury EXT CLK [J1]. A SN74LVC1G97
looked to be the answer. But how to "glue" it onto Hermes ? Since I
also want to connect my LPRO-101 as well I took Mike's [KF4BQ] AutoSw
10MHZ design and added the line driver. Since I did not have any of the
parts I also changed some of the parts to a larger footprint and added
some power decoupling similar to Hermes. Thanks to KF4BQ for his work
on the AutoSW design.
Available on my Hermes page
http://www.k9ivb.net/hermes/ or the following links.
www.k9ivb.net/hermes/AutoSw_10_MHz-122MHz_Buffer.pdf
www.k9ivb.net/hermes/AutoSw-Buffer_Gerber.zip
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