1/4/2009 - sold out - please see the
Counter Preamp II Kit now in stock
11 / 19 / 2006 - Counter Preamp kit
The Counter Preamp kit provides a high impedance input
amplifier for your frequency counter.
small (.7 x 1 inch) size
JFET input, two NPN buffer design
runs from 7 to 14 Volt supply
logic level (0 to 5 volt) output
For more information on the kit please
download (Right click/save target as) the Counter Preamp kit
schematic diagram and
all in Adobe Acrobat (.pdf) format.
For any questions, please send an email to me, Chuck Olson, WB9KZY at:
with your question or the items you want and we'll email you a Paypal invoice.