Just off the top of my head, a linear > supply that charges a battery or batteries that provide the top voltage > or voltages in multiple ranges which are then regulated/filtered to > provide dead flat DC at the desired levels. > I am not an engineer or an expert of any kind.  I'll have to go learn > all this. 

Save the date for our final Friday Forum discussion on March 26 focused on Racism in Transportation Policy.

Admittedly I am doing all the labor . . . and my interior had to come out anyway so those costs for me are not attached to a thruster . . . but $3500 or so just seems excessive for the contents of a thruster. Wiring or hydraulic runs would all be on top of this cost.

It is easier, not as messy, cleans up with paint thinner, can be given some rot resisting properties by adding copper napthinate (or a like compound), but best of all, it allows the fittings to come apart easy, is easy to clean off ,much more fun to apply and although I have not done an indepth evaluation, it is my impression it is cheaper.

. > The size of my boat allows easy communication between us, through an open front window.

fix that will hit the maint branch soon that provides FIR coefficients for decimation by 4 modes of AD9361 also. > It is actually relatively easy to generate your own coefficients for custom filters in Octave with the Signal package: > For example to generate a 128 tap filter that has the stop band set at 0.25Fs in a format that is easy to use to C, > > octave