pattern
specimen
assortment
embroidery
fancywork
miscellanea
miscellany
mixed bag
mixture
motley
observation station
potpourri
salmagundi
smorgasbord
variety
amplifier
analyzer
attenuator
baseband
comparator
converter
decoder
detector
emitter
encoder
inverter
microphone
mixer
modulator
oscillator
phosphide
recorder
synthesizer
transducer