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 Post subject: Sears 2278 a.m. f.m. Shortwave, seller claims afc is ssb
PostPosted: Feb Sat 15, 2020 9:54 pm 
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Joined: Jul Fri 21, 2017 9:58 pm
Posts: 767
Seller claims by using the afc on this set, he can demodulate ssb.

I see no ssb listed for this set of radiomuseum.

Sounds like bilgewater to me.

https://www.radiomuseum.org/r/sears_roe ... 22781.html


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 Post subject: Re: Sears 2278 a.m. f.m. Shortwave, seller claims afc is ssb
PostPosted: Feb Sun 16, 2020 4:45 am 
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Joined: Jan Fri 06, 2012 8:47 pm
Posts: 6528
Dalton wrote:
Seller claims by using the afc on this set, he can demodulate ssb.
Sellers "claim" a lot of nonsense things and this would be one of them. Automatic Frequency Control (AFC) is for use on FM to help keep the radio tuned to a station and not drifting off frequency. It would have nothing to do with SSB reception. This is not to say that the seller won't hear SSB stations, but understanding what they are saying would be a whole different matter :-)

Curtis Eickerman

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 Post subject: Re: Sears 2278 a.m. f.m. Shortwave, seller claims afc is ssb
PostPosted: Feb Mon 17, 2020 6:33 pm 
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Joined: Jul Fri 21, 2017 9:58 pm
Posts: 767
Eickerman wrote:
Dalton wrote:
Seller claims by using the afc on this set, he can demodulate ssb.
Sellers "claim" a lot of nonsense things and this would be one of them. Automatic Frequency Control (AFC) is for use on FM to help keep the radio tuned to a station and not drifting off frequency. It would have nothing to do with SSB reception. This is not to say that the seller won't hear SSB stations, but understanding what they are saying would be a whole different matter :-)

Curtis Eickerman


Word.


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 Post subject: Re: Sears 2278 a.m. f.m. Shortwave, seller claims afc is ssb
PostPosted: Feb Wed 19, 2020 11:19 pm 
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Posts: 10114
Location: Ohio 45177
I have one of those and it seems to be a decent quality portable radio of the era. Better than the plasticky cheapy X brand multiband portables. NO BFO. I would characterize the seller but it would be better to keep from being kicked off here. They are heavy radios. It has an oval plug AC power cord that disables batteries when it is plugged in. Has a signal strength meter. I had to replace the whip antenna. The pushbuttons connect to the slide switches and that is a weak point in the design. The power button attachment to the slider broke and I repaired it with epoxy but it is acting flaky again so I need to get in and reglue or whatever the issue is. Good sounding radio. I was given mine so I could not complain about the condition. I just noticed the dial lights are not working so have to investigate that too. Pulls in lots of SW stations with the whip antenna.

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 Post subject: Re: Sears 2278 a.m. f.m. Shortwave, seller claims afc is ssb
PostPosted: Feb Thu 20, 2020 1:40 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 4895
Location: Gainesville, Florida
you can use a radios oscillator to modulate another radio. maybe that is what the seller meant?


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 Post subject: Re: Sears 2278 a.m. f.m. Shortwave, seller claims afc is ssb
PostPosted: Feb Tue 25, 2020 12:38 am 
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Joined: Jul Fri 21, 2017 9:58 pm
Posts: 767
tubeAMP wrote:
you can use a radios oscillator to modulate another radio. maybe that is what the seller meant?

Perhaps.

But I still wouldn't buy it!


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