Archives April 2015

Sunday, 19th April 2015 - 19:49:17


Finished the air compressor manifold bracked. It's much better now that the manifold is not floating around. Click the image for more images.

Thursday, 9th April 2015 - 13:59:25


Yup. Thanks again Australia Post. These are United Electric UE-468 triodes.

Friday, 3rd April 2015 - 17:55:47


I started pulling apart this Ferguson PF181 transformer in preparation for use. It has old material based sheathing on the flyleads which I plan to replace with spagetti (PVC though). Unfortunately I didn't finish this off. I will have to continue later. It also looks like some kind of bug has made a house at some point in there.

Wednesday, 1st April 2015 - 18:53:41

RCA 813 Beam Pentode

I fired up the filaments on the two 813 Beam Pentodes that I scored. They both work. One 813 is RCA, the other is Radiotron. I'm going to have to track down a microwave transformer to feed the plate on this thing. It wants ~2kV. Will have to rethink a project now, because the 304T is dead. I'm pretty sure people have built amps with 813s.

Daily archives