B&K Dyna-Quik Model 650 Tube Tester w/Model 610 Test Panel
Accessory - Front Panels
B&K Dyna-Quik Model 650 Tube Tester w/Model 610 Test Panel
Accessory Back Side of Front Panels
Close-up of Wired Side of Right Panel
Close-up of Wired Side of Left Panel
Close-up of Wired Side of Model 610 Tester Add-In
 While working as an electronics technician
at the Oceanic Division of Westinghouse in Annapolis, Maryland, in the 1980s, I
received a vintage 1941 Crosley model 03CB console style radio for Christmas from Melanie.
It was in poor condition, having spent the previous few decades sitting in a barn
on the Eastern Shore of Maryland. Due to the era of manufacture, vacuum tubes rather
than transistors provided all the necessary amplification. One of the engineers
I worked for at Westinghouse (Mr. Jim Wilson, engineer extraordinaire) was a Ham
radio operator and had been from boyhood in Pittsburgh, Pennsylvania. After learning
of my Crosley, he gave me his B&K Dyna-Quik Model 650 tube tester for use in
restoring the radio.
The Model 650 was a rather high-end portable tube tester that was capable of
analyzing hundreds of tube types. Many dials and switches are used to set up heater
filament voltage, plate and grid voltages, and input signals according to an included
reference booklet. Surprisingly, not until very recently did I open 'er up to photograph
the innerds[sic]. As you can see by the images here, there is quite a lot going
on inside. All that point-to-point wiring was very time consuming during production,
and error prone to boot. I was surprised to find that 17 of the sockets (out of
73 total) were not wired at all! This tester was manufactured in 1961 and actually
has a socket for testing transistors and solid state diodes.
There are two active components in the circuitry - an
RCA 83 mercury vapor rectifier tube and a
6AV6
double-diode triode tube. Those two light blue components are
selenium rectifiers. I just ordered a user's manual and schematic
of the B&K Dyna-Quik Model 650 Tube Tester from a guy on eBay who sells high
quality copies of vintage manuals (copyrights have long since
expired). I'll scan and post it once it arrives.
B&K Dyna-Quik Model 650 Tube Tester w/Model 610 Test Panel
Accessory Wooden Case Details
B&K Dyna-Quik Model 650 Tube Tester Case
Posted September 4, 2015
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