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 Post subject: Another ID This Transistor
PostPosted: Apr Tue 17, 2018 2:30 am 
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Here ya go, something not often seen...


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 Post subject: Re: Another ID This Transistor
PostPosted: Apr Tue 17, 2018 9:32 am 
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The first pic looks like a small engine carburetor filter. Which Transistor did you want ID'd, or is it the entire radio?

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 Post subject: Re: Another ID This Transistor
PostPosted: Apr Tue 17, 2018 11:50 am 
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Location: Utica, NY 13502 (USA)
It looks like a fixed-frequency radio of some kind. I don't see a tuning cap but there is a crystal on the lower left corner of the chassis (black thingy). Is there any information inside the rear cover?

Dave


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 Post subject: Re: Another ID This Transistor
PostPosted: Apr Tue 17, 2018 1:33 pm 
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Location: Central Iowa, USA
Is it a baby boomer monitor? :mrgreen:


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 Post subject: Re: Another ID This Transistor
PostPosted: Apr Tue 17, 2018 1:52 pm 
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Location: dayton oh usa
the fixed freq radios i have seen were prominently marked with a radio stations id.
i will go with baby monitor(early) or intercom.


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 Post subject: Re: Another ID This Transistor
PostPosted: Apr Tue 17, 2018 3:02 pm 
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Location: Rayleigh, BC, CANADA
A baby monitor doesn't need city wide reception with a ferrite rod ant.

it's probably a radio station promo receiver.

Single channel sports radio?

Fire up the signal generator and see if it receives anything.

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 Post subject: Re: Another ID This Transistor
PostPosted: Apr Tue 17, 2018 7:15 pm 
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Rocco53 wrote:
Fire up the signal generator and see if it receives anything.

Don't think I want to... The crystal Dave mentioned?? 27.540

Quote:
2. On March 28, 2001, Agents Richard Caine and Donald
Bogert, of the Commission's Columbia Office, while conducting
enforcement work in Princeton, WV, observed unauthorized radio
operations on 27.575 MHz. The frequency band 27.540-28.000 MHz
is allocated for use by the United States Government, and the
aeronautical and maritime services. There was no evidence of a
Commission authorization for this operation.

https://transition.fcc.gov/eb/FieldNoti ... 239A1.html

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 Post subject: Re: Another ID This Transistor
PostPosted: Apr Tue 17, 2018 8:46 pm 
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Location: Utica, NY 13502 (USA)
27540 - 455 = 27085 kHz = CB channel 11...the unofficial "calling" frequency. It's a CB call monitor. How many turns does the ferrite loop have? Your thumb covered them up...or did you do that on purpose? :P

Dave


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 Post subject: Re: Another ID This Transistor
PostPosted: Apr Wed 18, 2018 12:29 am 
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Dave Doughty wrote:
27540 - 455 = 27085 kHz = CB channel 11...the unofficial "calling" frequency. It's a CB call monitor. How many turns does the ferrite loop have?

Your thumb covered them up...or did you do that on purpose? :P

Dave


I got big thumbs. :lol: :wink: :mrgreen:

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