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The RCA Type PB-90
velocity microphone

RCA Type PB-90
Here is an RCA Type PB-90 with a dull gunmetal finish,
and a frequency response of 30 to 6,000 Hertz.

PB-90 ID plate
The PB-90 Master Index number is MI-4000.

Another label
Another PB-90 plate with AF added to the MI.


And one more, this with no MI number.

RCA PB-90 advertisement

—PB-90 photos courtesy of Mr. Mike Schultz
http://www.uv201.com


Here is another nice PB-90 that appeared on eBay
during November-December, 2003.

RCA Type PB-90

RCA Type PB-90

RCA Type PB-90

RCA Type PB-90

RCA Type PB-90

PB90 Label


Another gorgeous RCA Type PB-90 that
appeared on eBay during April, 2004.

RCA Type PB-90

RCA Type PB-90

RCA Type PB-90

RCA Type PB-90

RCA Type PB-90

RCA Type PB-90


Yet another RCA Type PB-90. It went for
$1,534.99 on eBay October 13, 2004.

RCA Type PB-90

RCA Type PB-90

RCA PB-90 label

PB-90 interior


This one showed up on eBay during August, 2005.
It appears that someone removed its original finish.

eBay auction item

eBay auction item

eBay auction item

eBay auction item


This beauty is from the collection of Darrin Warner.

Darrin's PB-90

Interesting. Darrin’s (above) is Serial No. 1612, while this one that showed up on eBay is No. 1616.

Another PB-90

Fuzzy PB-90
A “fuzzy” PB-90 that was not protected
against iron filings entering its grilles.


The following six images are provided through the courtesy of Dennis Schrank.

RCA Type PB-90

RCA Type PB-90

RCA Type PB-90

RCA Type PB-90

PB90 tag

PB90 with PB96A1 base
Mr. Schrank comments: “The stand is a PB96A1. It has a half-inch thread and is adjustable with a thumb screw. It’s the only one like it I’ve ever come across. It was a disaster when I got it with plenty of rust and several holes in the base, but a little filler and some RustOleum™ do wonders.”

Judy Garland
Judy Garland in Chicago, 1934, with what may be an RCA Type 44-A or PB-90.
 

 

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