For Field operations for FD or roving, you might find interesting 
the column by Dan Rodericks of the Baltimore Sun where he mentions 
my field power from the car for Ham radio (and Big Screen TV's)..

https://www.baltimoresun.com/opinion/columnists/dan-rodricks/bs-md-rodricks-0620-20210618-zgplxgdbfza2jby6uhhqgbgyna-story.html

It covers my obsession of EV's, solar and emergency power.

Bob

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