The RF Parts 3-500ZG™ is a compact power triode intended to be used as a zero-bias Class AB2 amplifier in audio or radio-frequency applications. Operation with zero grid bias simplifiers …

Virtually an exact copy of the Eimac 3-500ZG in both mechanical and electrical characteristics. RF PARTS 3-500ZG easily represents the best value for the price. All tubes receive 100% RF …

Excellent packing with foam and peanuts, fast shipping. Placed matched pair of 3-500ZG's in my SB-220, and they worked better than the original Eimac tubes. 40 watts carrier drive in - 400 …

This tube is a Heavy Duty Graphite Anode version of the original Eimac 3-500Z, and it has a stronger Anode stem-support to add to the tube's ruggedness and stability.  …

The RF Parts 3-500ZG™ is a compact power triode intended to be used as a zero-bias Class AB2 amplifier in audio or radio-frequency applications. Operation with zero grid bias simplifiers …

We provide genuine 3-500Z replacement components backed by our quality guarantee. Choose from multiple or a single 3-500Z tube for sale. The 3-500Z tube stands as one of the most …

The 3-500ZG is a transmitting vacuum tube designed for use in high-power RF (radio frequency) applications. The tube uses a filament to heat up the cathode, which then emits electrons into …

I purchased a new matched set of RF Parts 3-500ZG tubes and installed them. What a difference! More power out with less power in, and the new set never goes BANG like the old ones …

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