Sadly, there are no
I/Q inputs on the 122 chips, but there is a transmit enable.
I don't see any reference to whether that has a Schmitt
trigger response or if it is at least slightly analogue and
could be used for modulation, with some sort of inverse
response curve in a DAC or something? Even if it has
hysteresis, could it be used for an on-off tone modulation?
Could it perhaps be used with pulse width modulation?
Got a question for the
Having done a lot of work
with 94 GHz, I realize just
how much fun it is to
align a millimeter system
performance. Both focus and
The plan is to modulate one
of the boards with 1000 Hz
AM and test on
the antenna range. Now the
HP415 detector can be
connected to the 145 MHz
port and dB's directly
read. And a
relatively close object to align the sights on.
Would AM modulation be as
simple as connecting a
(or 555 timer) directly to
the I Q inputs and hit both
with the 1000 Hz in
phase? I would expect
output that way vs just the I or Q port.
found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.8048 / Virus Database: 4793/15886 - Release
Internal Virus Database is out of date.
Paul Bicknell G8KFW South Coast UK