[Milsurplus] German Receivers- Audio Output Impedence?

[Al Klase]

Dave,

I have a Kraut headset here labeled  D1h.f. that I've always used with 
my Torn EB.  It measures 4000 Ohms DC.  Lets call the 10-12K audio 
impedance among friends.  The radio has two headphone jacks, so I think 
they were doing the same thing we were: using high impedance headphones.
So I concur with the 4000 Ohm number.

Impedance matching is like horseshoes and hand grenades: Close Counts!

Al

On 11/17/2023 10:29 AM, Ray Fantini wrote:
> KwEa manual says 4000 Ohm, going to assume that the little E.B. is about the same. Somehow 2000 to 4000 Ohm cans work with a lot of the early stuff, Think some things like the BC-348 had a option to use 200 or 3000 Ohms for the headphones but may just be imagining that. You know how it is, you get old and the brain isn't what it used to be.
> Think the BC-342/312 had a first and second audio output and one was also high impedance but that may also be a hallucination.
>
> Ray F/KA3EKH
>
>
>
>
> -----Original Message-----
> From:MMRCG at groups.io  <MMRCG at groups.io>  On Behalf Of David Stinson via groups.io
> Sent: Friday, November 17, 2023 6:56 AM
> To: ARC-5<arc5 at mailman.qth.net>; milsurplus at mailman<milsurplus at mailman.qth.net>; MMRCG<MMRCG at groups.io>
> Subject: [MMRCG] German Receivers- Audio Output Impedence?
>
>
>
> Does anyone know the audio output impedance of the German Torn E.B. and FuG 10 receivers?
> I've been told that many of them have open audio output transformers because of connecting incorrect headphones or even speakers to them.
> Thanks,
> 73 DE Dave AB5S
>
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-- 
ARK Sig Block Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/
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