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www.pentalabs.com penta labs Amperex 3-500z Part#1 This is by far, hands down the most fun I've had shooting a YouTube ...

Here I show a close up comparison of the the 4 tubes TAKE NOTE !!!! The Penta Amperex is slightly shorter than the discontinued ...

Here I show the repair and mods on another Kenwood Tl922 Enjoy.

Here I show the repair and mods on a drake l7 Amplifier Enjoy.

This is part 2 of 4, ordering replacement 3-500zg tubes for an old Drake L4B linear amplifier. Getting a matched pair that can ...

Here I show the repair and mods on another Ameritron Al811h Enjoy.

Here I showcase the new penta Amperex 3-500zg. A great honor bestowed upon me by my friends and colleagues at Penta Labs.

... you guys big thanks out to siglent XS bird Mechman Co axle Dynamics but really honestly let's thank Penta Penta labs for trying ...

Here I show the repair and power test on A kenwood Tl922a Will Be getting a new set of Penta Labs 3-500zg tubes.

Here I show the repair and mods on a Ameritron Al80a Enjoy.

Here I show the repair and mods on a Ameritron Al811h Enjoy.

Here I show the repair and modifications on another Heathkit Sb-220. I forgot to add that I installed new parasitic supressors.

... going to talk about something completely different I reached out to our friends our Newfound friends over at Penta labs and said ...

Here I show some new design Penta Lab Tubes Correction … the base is not painted, it is actual aluminum. Enjoy.

Here Ishow the repair and mods on another Ameritron Al811h Enjoy.

Here I talk about the exciting news I heard tonight Enjoy.

Here I show the repair and mods on another Ameritron Al-811H I forgot to add that I replaced the line 120/240 and buck boost ...

Here I show the repair and mods on another Ameritron al-811h Enjoy.

Here I show the repair and mods on another collins 30l1 Enjoy.