Very much On Topic: Integrated Vacuum Tubes

[Nico de Jong]

From: "Wai-Sun Chia" <waisun.chia at gmail.com>
> So some questions to throw to the tube collectors:
> - What was/is the smallest tube? purpose?
> - What was/is the most integrated tube? purpose?

I "did" some time in a Logistics squadron when I did my national service in
the dutch AirForce around 1964. We carried a spare part the size of about an
ECC81, maybe a bit higher. It was a complete IF amplifier/filter for IIRC
10.7 MHz, including coils, capacitors, ...

Nico