[Test-Equipment] Brüel & Kjær instrumentation

[Richard Knoppow]

    If you have model numbers I may be able to identify the stuff.
    B&K were the top of the line acoustic instrumentation. Their 
microphones are world standard and they made a copy of the Western 
Electric 640AA for measurments were it was speced.  They did make a wave 
analyser, somewhat similar to the one made by General Radio, I believe 
it could be coupled to a chart recorder.
    The tube is probably for measuring acoustic impedance. The impedance 
rig is essentially an acoustic bridge. There may be couplings to 
standard compression loudspeaker drivers. The microphones are valuable 
and don't age. They can be certified by NIST so someone probably kept them.

On 1/1/2016 9:06 AM, Fuqua, Bill L wrote:
>    These are early products, they are all in wooden cases. I don't have a mic. There is a wave analyzer of some sort.
> I will have to take some time and dig them out to see exactly what I have. There is also a long plexiglass acoustic tube and
> a wooden platform for it.
>     All large and heavy stuff.
> 73
> Bill wa4lav
>
> ________________________________________
> From: Test-Equipment [test-equipment-bounces at mailman.qth.net] on behalf of Brian [brianclarke01 at optusnet.com.au]
> Sent: Friday, January 01, 2016 6:28 AM
> To: Discussion of Electronic Test Equipment
> Subject: [Test-Equipment] Brüel & Kjær  instrumentation
>
> Hello Bill,
>
> Among your souvenirs, have you any microphones or other parts for the Bruel
> and Kjaer sound level meters - model 2200, as I recall?
>
> 73 de Brian, VK2GCE.
>
> On Friday, January 01, 2016 8:49 AM , you said:
>
>    That reminds me, I have a lot of B&K, Brüel & Kjær,  instrumentation in
> storage. Mostly used for sound analysis and experiments.
> These are not cheap and are heavy. Some need dial cord restrung, thus I
> really can't check them.
>     73
> Bill wa4lav
>
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-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL