RCA was in the two way business years ago. Here is a Vintage Test meter used for tuning up the radios and is called for in many of the tuning instructions. This meter is a 50 uA.
5 Gallon Vacuum Chamber & Mastercool 6 CFM Single Stage Vacuum Pump Kit - Acrylic Lid All chambers are 100% tested prior to shipping Proudly designed and assembled in Chicago, IL
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