Unknown Big Pink 7 Pin Part


#1

I recently got a bunch of these parts from a auction but have no idea what they are.
They are about the size of my fist
Pink and metal
7 pin - circular pattern
Not sure but may be foreign

Any idea what it could be will be helpful!
0714181737|690x388

!


#2

More pics


#3

Hello,
Unfortunately I wasn’t able to find anything similar to it in our catalog or from searching online. The only hit I got from the markings on the part is the RY-746 or RY-745 which comes back to a series of relays, but they are a much different form.


#4

@Hunott20, it’s a power amplifier, one of our technicians studying Russian, was able to find this:

https://translate.google.com/translate?hl=en&sl=ru&u=http://www.cqham.ru/pa_uv3ax.htm&prev=search

and here is the datasheet:

https://translate.google.com/translate?hl=en&sl=ru&u=https://rudatasheet.ru/tubes/gu-74b/&prev=search

Regards,