Mysterious tube VCO?

debterminer

I believe this is a very old Tube VCO of some sort. No idea if it works(one of the tubes appears to be dieng(the smaller one of the two) as its silver coating is fading off the top. The other has a small area on the top where the silver coating is a little bit black, but it has not grown since i ahve gotten it. Anyone seen anything like this before?
The internalsVV

Posted Image, might have been reduced in size. Click Image to view fullscreen.

VVBanana jack plugs for IN SYNC and OUT

Posted Image, might have been reduced in size. Click Image to view fullscreen.

VVthe controlls for SLOPE, AMPLITUDE, SPEED, and SYNC

Posted Image, might have been reduced in size. Click Image to view fullscreen.

JovianPyx · Posted: Tue Jun 23, 2015 5:25 am Post subject:

Definitely DIY. With a control labeled "speed", my guess would be an LFO or some kind of triggered slope generator.

You should be able to create a schematic of it - that will tell the story of what it is.

Why are the photos right/left reversed? cyclops

debterminer · Posted: Tue Jun 23, 2015 10:34 am Post subject:

hehe lol I have no idea why the photos are reversed my phone camera did it, ill try and make a schematic of it sometime. I wonder if the gigantic old resistors in it use the same resistor code as carbon resistors?

JovianPyx · Posted: Tue Jun 23, 2015 10:47 am Post subject:

PHOBoS · Posted: Tue Jun 23, 2015 11:52 am Post subject:

edited the first post so the pictures show.

nice DIY frankenbuild Razz

debterminer · Posted: Tue Jun 23, 2015 3:42 pm Post subject:

lol ty phobos. I didnt make it though, I found it in a thrift store. Its older then I am, im pretty sure.

JovianPyx · Posted: Tue Jun 23, 2015 3:56 pm Post subject:

bubzy · Posted: Wed Jun 24, 2015 6:42 am Post subject: