Business End of Collins 204F-1 2.5 KW Amp

204F-1 2.5 kW Linear Amplifier PA deck shown with the top door open. Two fiberglass chimneys cover the top of two 4CX-1500s that have replaced the original 4CX-1000 PA tubes. This photo also clearly shows the two sets of RF tuning components that are used to pre-tune this selectable two channel amplifier. The tune and load control for each channel are just above the tubes.