NEW (01/29/2002) - Son of Zerobeat
May 24, 2015 - new customer video on Youtube, see below
Son of Zerobeat is our version of the original Zerobeat project published in Circuit Cellar Magazine in 1996 by Ed Nisley, KE4ZNU.
one pot audio detector setting
board size (2 by 1.5 inches)
offset frequency setable from 400 to 1200 Hz with a switch press
default offset frequency is 600 Hz
all board mounted parts including machine pin sockets come with kit
just add your metal enclosure, +12V power jack, audio jack and switch to complete the kit
Kit price including manual is $28 + $3 USA shipping/handling
Kit price (No manual) is $25 + $3 USA shipping/handling
DX (outside the USA) add $7.00 to USA prices (total of $10 DX shipping)
Dennis, W0JP, sent this: video of his kit, Thanks Dennis !
12/29/2014 - Artur, CT1FRC, created this very professional video
of his Son of Zerobeat kit with his Ten-Tec Eagle rig, thanks Artur !
Daniel, ON3DDR, provided this neat video
of his Son of Zerobeat kit, thanks Daniel !
Son of Zerobeat has 7 LEDs which graphically indicate the frequency of a received CW audio tone. Adjust your transceiver's
frequency until the center green LED lights and you are within +/- 10 Hz of zero beat with the transmitting station.
Download the manual -
parts placement diagram and
schematic and save $3 by printing your own!
Note that the board plating appears corroded, however it should not affect soldering.
Suggestion from a customer: use
a brass brush to shine up the bottom traces before soldering.
Print out a Kit order form to figure your order manually
Inquire via email for pricing of the Son of Zerobeat PIC chip alone or PIC chip + board only.
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Downloadable files for Son of Zerobeat
The Acrobat files of complex diagrams (like the schematic) may not
view well on your computer screen - suggestion: use the magnifier to zoom in
for better detail or print out the file.
szbmodop.pdf (6k) - an Acrobat file of optional modifications to the Son of Zerobeat
zerob8.pdf (65k) - an Acrobat file of the Son of Zerobeat manual
zerobsch.pdf (33k) - an Acrobat file of the Son of Zerobeat schematic
zerobdi2.pdf (90k) - an Acrobat file of the Son of Zerobeat parts placement diagram
zbhookut.pdf (31k) - an Acrobat file of the Son of Zerobeat hookup diagram
zerbfix.txt (2k) - a text file to help in fixing a Son of Zerobeat
zbpict2.pdf (155k) - an Acrobat file of the Son of Zerobeat annotated picture
bigzb.jpg (229k) - a larger picture of the Son of Zerobeat circuit board