For users of light to very light aircraft and helicopters, including the avionics needs of experimental and gliders pilots, Becker pioneered the ultra compact and square format many years ago, accommodating VHF radio and transponder into a 21/4 inch instrument recess in the aircraft panel, without sacrificing TSO performance when compared to larger and heavier equipment.
Becker is the world leader in this market segment.
More recently, radios (Mode S transponder) have been offered in American mark width standard, to fit the panel in a harmonised way, matching other manufacturers' equipment.