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15W Old School Fashion Amplifier (T050E)
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FET - TRANSISTOR – TUBE (ART273E)
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Oscilloscope - EICO Mod 430 (T043E)
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Low Cost and Low Power Amplifier (T042E)
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Silencer For Communication Receivers (Squelch) (T041E)
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11 W Amplifier Powered by 6-12 V (T048E)
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Audio Generator (T047E)
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40W Amplifier (T049E)
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Preamplifier for Ceramic Pickup (T045E)
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20 W Transmitter the 2 Meters Band (T044E)
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Power Supply For Electrolytic Recovery (T046E)
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Auxuliar Grid Regulated Amplifier V028 (T040E)
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Three Tube Stereo Amplifier (T039E)
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Tube Amplifier V026 (T038E)
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Superheterodyne 2 Tubes Receiver (T037E)
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Old Remote Control for Tube TV Receivers (T036E)
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Simple Tube Oscilloscope (T035E)
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Phono Oscillator (T034E)
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MW OC Receiver Using Tubes (T032E)
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Small Phono Amplifier (T031E)
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Variable Reluctance Phono Preamplifier V019 (T030E)
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Tubeless Power Supply (T022E)
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Phonograph Amplifier (T023E)
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Twin Tube MW Receiver (T020E)
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One Tube Remote Control receiver (T021E)
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Two Tube Intercom (T018E)
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Mini Battery Set (T019E)
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Home Broadcaster (T016E)
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Three Tubes Amplifier (T017E)
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Timer Using Tubes (T014E)
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