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GI-7b / GI7b HF-VHF-UHF power coaxial triode tube (original box)
GI-7b / GI7b HF-VHF-UHF power coaxial triode tube (original box)
GI-7b / GI7b HF-VHF-UHF power coaxial triode tube (original box)
GI-7b / GI7b HF-VHF-UHF power coaxial triode tube (original box)
GI-7b / GI7b HF-VHF-UHF power coaxial triode tube (original box)
GI-7b / GI7b HF-VHF-UHF power coaxial triode tube (original box)
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The GI-7B (GI-70B) microwave triode operates as an oscillator and an amplifier in continuous-wave or pulsed mode with anode modulation in the centimetric and decimetric wavelength ranges. The GI-7B with a heat sink and the GI-70B with no heat sink. The tubes GI6b, GI7b, GI7bt, GI70b and GI70bt are all the same GI7b. GI7b and GI7bt are completed by factory with coolers(HgAl) and the others (#70) without.

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