Philips model BX718X
BX 718X interior
General features
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Circuit type |
Superheterodyne, 452kHz IF with delayed AVC |
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Dimensions |
500x290x225mm, 10.75kg |
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Cabinet |
Bakelite, combined plastic grille / dial |
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Loudspeaker |
250mm, moving coil, permanent magnet |
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Main controls |
Tone, volume/on-off, tuning, waveband switch, PU switch, bandwidth selector |
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Extra controls |
Local/remote switch |
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Connections |
Antenna, ground, PU, external loudspeaker |
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Power (BX416A and BX426A) |
AC, 110 to 250V in 6 steps, W |
Wave
bands
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MW |
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SW1 |
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SW2 |
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SW3 |
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SW4 |
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SW5 |
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SW6 |
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Circuits and Tubes
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RF preamplifier |
EF41 remote cutoff pentode |
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Oscillator and mixer |
ECH42 triode-hexode |
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IF amplifier |
EBF80 diode- remote cutoff pentode |
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Audio amplifier,det and AVC |
EBC41 duodiode-triode |
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Audio amplifier phase splitter |
EBC41 duodiode-triode |
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Push-pull audio power amplifier |
2x EL41 9W pentodes |
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Rectifier |
2x AZ41 dual power diodes |
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Tuning indicator |
EM34 dual fluorescent tube-triode |