AWMS Air Wave Modulation Source User Manual
- June 17, 2024
- AWMS
Table of Contents
User Manual
Air Wave Modulation Source
airwave modulation source
Module Width (10hp)
Module Depth (22mm ) / (25mm incl. Power Cable)
Current Consumption +12v (87MA) -12v (35mA)
The Awms is a voltage controlled FM radio designed to introduce broadcasted
randomness in your modular system anything from randomized and distorted radio
stations to random voltage derived from broadcasting.
FM Source Section is a simple, quick, and dirty, voltage-controlled FM radio
Receiver. It’s CV input, and the Tune knob lets you scroll through your
favorite static noises and radio stations. Not only is it a great noise source
to have for your modular setup, due to the output being normalized to the
sample and hold input, random voltages based on the current broadcasting
stations / static are also available.
Bandwidth of 87 ~ 108 Mhz or 64 ~ 108Mhz is selectable via a jumper pin on the
back side of the module.
Squeeze switch lets you amplify and asymmetrically clip the signal to bring
the static in between stations to useful amplitudes or clip the broad casted
audio. (Great for use in underground situations with bad reception. It may
replace your white noise generators!
Also in our case can still be useful as a random voltage generator as well)
Clean signal maximum ranges 10 volts Peak to Peak (Depend- ing on the
broadcasting dynamic range) and the Squeezed signal 13 volts Peak to Peak (-2
~ 1lv due to asymetrical LED clipping, biasing the sample and hold output to
mostly be positive)
Cv input range O~Sv when fully CcCw.
The tuning is continuous, meaning it isn’t a trigger or button based automatic
tuner like most tuners today, and because of that it may not tune in the
highest fidelity every single time. (When feeding the cv input consider a more
stepped voltage rather than a smooth one, or with a smooth voltage consider
using a slow attenuated control voltage to fit your intended range)
This device is not designed to be a precision instrument!
The LFO section is a triangle and square wave voltage-controlled low-frequency
oscillator.A three-way toggle switch can switch between three different
frequency ranges. Each range is according to the list below.
Fast – 3 sec ~ 19Hz
Very Fast – 319Hz ~ 15.69KHz
Slow – 17 sec ~ 3Hz
Output voltage range
Triangle wave + 6v
Square Wave + 10v
The Squarewave Output is normalized to the Sample and Hold circuits trigger
input.
Sample and Hold By default, with nothing plugged into the input, it samples
the audio coming out of the FM radio to generate random voltages. It can
sample external inputs as well as external clock sources.
PATCH TIP!
with the LFO’s frequency range set to “VERY FAST” the output of the sample and
hold yields bit crushed audio from the AIR- WAVES (~ use groovy font) or your
sound source of choice with the external sample input. Included in the Box is
a small 3.5mm adaptable antenna, however if you lose it or forget to bring it
with you, you can always use a long patch cable.
Block Diagram of internal routing
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