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 Post subject: 1931 RCA R-5 "Radiolette"
PostPosted: Jun Fri 18, 2021 6:29 am 
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So,

I just picked up this RCA Cathedral at an estate sale. Its pretty small, but nevertheless really neat. I love the styling and couldn't believe how good of shape it was in. I just got around to removing the chassis to take a peak under the hood. It appeared someone had serviced the set. Not sure how long ago. I suspected it by the power cord and what appears to be a replacement grill cloth. They changed out the main filter can and a few paper caps. Still a few originals under there. The speaker and transformer are OE.

I decided to fire this old girl up. Sure enough. It works great. Pulls the few stations we have out here nice and clear. Question though. This unit DOES NOT appear to have any volume control? Just a power switch. Tone Control, and the tuner knob. The volume output seems to be I'd say mid to high. It does have a larger speaker for such a small set. After looking this model up on radio museum it says its a "fixed Reaction" set.

Does this imply no control of volume output? I haven't pulled a schematic. Just found this odd.


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 Post subject: Re: 1931 RCA R-5 "Radiolette"
PostPosted: Jun Fri 18, 2021 6:36 am 
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gsxrkid74 wrote:
After looking this model up on radio museum it says its a "fixed Reaction" set.

Does this imply no control of volume output? I haven't pulled a schematic. Just found this odd.

Nice find! looking over the schematic would tell you if it had a conventional volume control or not...

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 Post subject: Re: 1931 RCA R-5 "Radiolette"
PostPosted: Jun Fri 18, 2021 8:20 am 
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From the RadioMuseum notes on the model, the left knob should be volume and the right knob should be the on-off switch. There's not supposed to be a tone control. I would check if your volume control is operating correctly.

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 Post subject: Re: 1931 RCA R-5 "Radiolette"
PostPosted: Jun Fri 18, 2021 12:59 pm 
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I have the Westinghouse branded version. Model WR-14 which is the same radio.

It is surprising how well a 4 tube radio can perform!
But it should have a volume control. Not sure why anyone would remove or disable it.
Its actually in the antenna circuit as seen in the schematic.

http://www.nostalgiaair.org/pagesbymode ... 040311.pdf

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 Post subject: Re: 1931 RCA R-5 "Radiolette"
PostPosted: Jun Fri 18, 2021 3:15 pm 
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Ok, Thanks guys. I wasn't sure. It seemed like that left knob was adjusting tone. Defiantly not affecting the volume gain. I didn't have any time to proceed further. I will pull the schematic and see what's going on. Maybe the pot is defective? Doesn't seem dirty as there is zero crackle. Hmmm?

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 Post subject: Re: 1931 RCA R-5 "Radiolette"
PostPosted: Jun Sat 19, 2021 12:45 am 
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It appeared someone had serviced the set.

I doubt that there's anything physically wrong with the volume pot, unless whoever "serviced" the set gummed it up somehow. More than likely it's been mis-wired. I would first check the lug that would connect to ground, to see if it's open circuit.

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