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5BP1 television receiver.
Shielding is required to prevent the power transformer radiation ruining the picture. It can be used without, but some hum and defocusing is evident. Aluminium box contains EHT circuit. 5V4 rectifier is in front. Along the top from front to back are the 12AU7 line oscillator and output valves, with the 5V4 rectifier next to the EHT box. Adjacent to the EHT box near the CRT mount is the 12AT7 sync separator. Along the bottom from front to back are 12AU7 frame output, 6BX6 frame oscillator, 6AC7 1st video, and 6V6 video output. Close observation shows the 5BP1 number on the CRT neck. This tube was from a batch made in 1943. 5BP1's came onto the disposals market cheaply after the war. In 1984 I bought the entire Deitch Bros. stock of 5BP1's for $2.00 each.
5BP1 television receiver.
Shielding is required to prevent the power transformer radiation ruining the picture. It can be used without, but some hum and defocusing is evident. Aluminium box contains EHT circuit. 5V4 rectifier is in front. Along the top from front to back are the 12AU7 line oscillator and output valves, with the 5V4 rectifier next to the EHT box. Adjacent to the EHT box near the CRT mount is the 12AT7 sync separator. Along the bottom from front to back are 12AU7 frame output, 6BX6 frame oscillator, 6AC7 1st video, and 6V6 video output. Close observation shows the 5BP1 number on the CRT neck. This tube was from a batch made in 1943. 5BP1's came onto the disposals market cheaply after the war. In 1984 I bought the entire Deitch Bros. stock of 5BP1's for $2.00 each.