One of my restorations
Marantz 2270 receiver
A hands-on restoration that included replacing electrolytic capacitors and the speaker-protection relay, then bringing back the classic blue tuning display.
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Newmarket, Ontario
Collector · Hobbyist · Tube enthusiast
Behind Heritage Tube Co.
A hobby built around the warm glow of old radios.
I’m Eryn Richardson, a vintage-radio and test-equipment collector in Newmarket, Ontario. Heritage Tube Co. is a small hobby project born from years of enjoying old radios, collecting vintage gear, and bringing pieces of electronic history back to life.
Tube testing became the part of the hobby I loved most. There is something satisfying about slowing down, following the correct setup, recording each reading, and learning the story a tube has to tell.
The heart of the bench
RD Instruments Model 1575
The tester I use
Old-school equipment, careful documentation.
My main tester is an RD Instruments Model 1575, an industrial version of the Western Electric KS-15750. It is a mutual-conductance tester with the kind of purposeful, hands-on controls that make vintage test equipment so enjoyable to use.
The tube
Visual details and identification are recorded first.
The readings
Each applicable section is tested and documented.
The context
Results are compared with the tester-chart minimum.
A passion project
This is a hobby—not a high-volume testing lab.
I created Heritage Tube Co. to share the part of the vintage-radio hobby I genuinely enjoy: testing tubes, documenting what I find, and helping other collectors make informed decisions about the tubes in their equipment.
Whether a tube came from a family radio, a restoration project, or a box found at an estate sale, I treat it as a small piece of history worth examining properly.
Questions about a tube?
I’m always happy to talk vintage gear.
Reach out about testing, a tube you are trying to identify, or an interesting old radio project.
Request tube testing