[MRCA] Progrock 2 What IF board
B. Smith
smithab11 at comcast.net
Mon Oct 14 22:07:53 EDT 2024
Attach photo of my Progrock2 "What IF" board. The Edge connector was cut
from a larger 32 pin connector. Dip switches are used for "Bank"
selection and allow the board to output on 8 frequencies. The output
Photo Jack can be moved to any of the three CLK outputs. Power is a 9V
battery.
Blank PC soldering pads allow for playing "What IF". My next "What
IF" board will have an additional dip switch for CLK output selection
and increase the board output capability to 24 programmed frequencies.
TIP: The outputs (CLK) are not buffered - you have to add a capacitor
in series. If the board looks a little ruff and like it was assembled
late on a Saturday night in 45 minutes - you might be right.
Z
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/mrca/attachments/20241014/59a0c5ae/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: semk4che.gif
Type: image/gif
Size: 9511 bytes
Desc: not available
URL: <http://mailman.qth.net/pipermail/mrca/attachments/20241014/59a0c5ae/attachment-0002.gif>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: DSCF0319.JPG
Type: image/jpeg
Size: 74228 bytes
Desc: not available
URL: <http://mailman.qth.net/pipermail/mrca/attachments/20241014/59a0c5ae/attachment-0002.jpe>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: DSCF0319.JPG
Type: image/jpeg
Size: 74228 bytes
Desc: not available
URL: <http://mailman.qth.net/pipermail/mrca/attachments/20241014/59a0c5ae/attachment-0003.jpe>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: semk4che.gif
Type: image/gif
Size: 9511 bytes
Desc: not available
URL: <http://mailman.qth.net/pipermail/mrca/attachments/20241014/59a0c5ae/attachment-0003.gif>
More information about the MRCA
mailing list