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Vintage Telephony and Telecomms Vintage Telephones, Telephony and Telecomms Equipment

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Old 20th Feb 2017, 8:43 pm   #1
Osiris69
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Default Watch Receiver for 1/232CB

Hi, picked up this phone at weekend, has a hook for a watch receiver, but missing the receiver, anyone know what model it was? And also if any for sale??
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Old 20th Feb 2017, 10:56 pm   #2
russell_w_b
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Default Re: Watch Receiver for 1/232CB

I'm going to have to look in the shed now. There's a watch-receiver of sorts with a chrome hook on it and a twin braided flex. Not sure if it consists of a 'Receiver 1L' though.

Watch this space...
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Old 20th Feb 2017, 11:48 pm   #3
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Default Re: Watch Receiver for 1/232CB

This is what I was on about, though looking at it, it doesn't seem to be very 'GPO-ey'. The diaphragm is marked 'Ferrosil No:24' and is made by Richard Thomas and Baldwins.

The bobbins are shunted by the curly wire and the impedance at 1kHz is very, very low: 1.73 + j0.6. It looks, therefore, like it would be wired in series with the main receiver. When I bridged it with my Peak analyser, I could hear the 1kHz tone quite clearly.

I haven't measured the bobbin impedance un-shunted. I doubt this is what you are looking for, but I put it on for interest.
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Old 21st Feb 2017, 1:39 am   #4
Osiris69
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Default Re: Watch Receiver for 1/232CB

That's not exactly it, but would do the job, How much? PM me please.
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