Anything not specifically related to NBTV, but at least of some technical nature that might be of interest to NBTV members. Items for sale and links to retailers do not belong here.
Today i finished my SSTV panel after making up my mind as to what i wanted on there ...I have brightness.. contrast ...sync control ..vertical speed ...manual vertical sync reset ...and sound on off . Testing below
The electromagnetic spectrum has no theoretical limit at either end. If all the mass/energy in the Universe is considered a 'limit', then that would be the only real theoretical limit to the maximum frequency attainable.