Small home brew TRF receiver previously listed in radio identification help.
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Location: Kanahooka, NSW
Member since 18 November 2016
Member #: 2012
Postcount: 712
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I started repairs on this today. As could be expected it was quite nasty to work on due to it's compact size.
Have recapped it ,have meggered it,and replaced the power lead with one of Carll's nice cotton covered ones and of course I have earthed it. The speaker was in a bad state. I am attempting a repair , I am not very good at speaker repairs due to my condition.
Work still in progress.
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Location: Toongabbie, NSW
Member since 19 November 2015
Member #: 1828
Postcount: 1250
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Good stuff!
Keep us informed.
Fred.
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Location: Kanahooka, NSW
Member since 18 November 2016
Member #: 2012
Postcount: 712
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Pressed on with this today.
No audio output. In spite of my best efforts the speaker is faulty. It is a little speaker with a 3.5 inch square surround with rounded corners . Have no idea why it is faulty . If I put an analogue ohm meter on ohms X1 across the speaker I can get a crackle out of it. However it does not work. Substituted it with a larger speaker and that worked . I cannot fit this larger speaker it needs the 3.5 inch square speaker. If anyone out there wants to sell me one I would be happy to buy it or swap for another speaker..
The sensitivity is not good however I want to get it back as a complete radio before I progress to the next stage.
Kind regards Jimb.
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Location: Belrose, NSW
Member since 31 December 2015
Member #: 1844
Postcount: 2369
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Yes Jim I have a couple of NOS ones, they were used in the AWA personal portable. You know, the one that looks like a little bakelite fridge.
I bought them years ago intending to replace the repaired / substitute ones in my little AWAs but never needed to do it. I think I have one of the transformers as well...
Drop me an email!
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Location: Kanahooka, NSW
Member since 18 November 2016
Member #: 2012
Postcount: 712
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Location: Belrose, NSW
Member since 31 December 2015
Member #: 1844
Postcount: 2369
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Yep, found 'em today. I have 3 NOS "kits" of speaker and transformer, branded "Jensen by MSP".
They were a common service item because when the two D cells leaked (as they will if you forget to remove them) the corrosive contents would destroy first the speaker then the transformer.
Jim check you email!
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Location: Kanahooka, NSW
Member since 18 November 2016
Member #: 2012
Postcount: 712
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Location: Kanahooka, NSW
Member since 18 November 2016
Member #: 2012
Postcount: 712
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Radio now completed and working well. Thanks to Ian who came down with his wife and delivered a new replacement speaker personally. I am very greatful,we had a very pleasant time together over lunch a very enjoyable day.
Thanks again Ian.
Regards Jim.
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