Bluel & Kjaer 2409 electronic Voltmeter

[KO6YB]

Hello, Two of these meters found abanded on my door step, orphans. I'll take them in and care for them. Cosmetics B, insides A grade. Have not found much info, nothing like a manual or READABLE schematic. I find for a VTVM to offer (switchable) slow or VU damping, and selectable modes average, peak, or rms a new feature set I have not seen before on a VTVM, me of little experience. Certainly a heavy build.  I count four tubes, circuitry on a pcb. I like it. I am not familiar with the kind of probe connectors it uses.

Anyone with a manual, a pdf, or a comment??
Thanks, Stan

[KD6VXI]

In the early 90s, Cetec-Ivie (not sure if I spelled it correctly)  and B &  K where the two top names in audio spectrum analyzers.

The shop I worked at,  IASCA,  NAC and CAN all I used them for judging and setup of car stereo systems.

May not answer your question,  but could offer some insight into the company.

We called them B &  K.   Not sure how B &  K Precision would have felt..


--Shane
KD6VXI

(updated due to autospell on phone screwing up initials of International Auto Sound Challenge Association,  National Auto sound Challenge and Car Audio Nationals.   CAN and NAC later merged and formed IASCA)

[Pete, WA2CWA]

It's Bruel & Kjaer

The attached isn't great but should provide some info.

[KO6YB]

Well, thanks. Shane, I appreciate the insight.

Pete, very much thanks for the manual pdf. The text
and schematic are great, tells me mot of what I need
to know about them.

What I am not familiar with is the input and output connectors,
is this something common that I just don't recognize??

Thanks again, Stan

[Pete, WA2CWA]

Maybe the connectors were popular in Denmark. Take them out and replace them with two terminal 1/4 inch phone jacks.