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Michael Lawton's Discussions

The Manufacture of an E H Scott All Wave 15 Radio Receiver

Started this discussion. Last reply by Kent King Feb 4. 1 Reply

I just found these YouTube videos I think folks here would enjoy as much as I did... https://www.youtube.com/watch?v=esYrR_joF3I and... …Continue

Amplitude Modulation and Bandwidth...

Started this discussion. Last reply by Michael Lawton Sep 30, 2021. 4 Replies

     Over the years I have heard a lot of discussions about bandwidth in AM radio. Thinking about the basics of amplitude modulation, I never quite understood what all this fuss was about, or exactly…Continue

My 800B, a slow work in progress...

Started this discussion. Last reply by Kent King Aug 8, 2021. 11 Replies

I'm starting this thread to document the progress on my 800B, amassing the components, and then the eventual restoration, testing, sorting out of problems, more testing, and eventual final results.…Continue

Want to buy 800B power supply /amp

Started this discussion. Last reply by Lance Hughes Feb 28, 2021. 11 Replies

OK, I'll admit it, I've been bitten by the E. H. Scott bug. After refurbishing my SLRM and seeing how well it works, I saw an 800B on eBay which I could not resist for the "buy it now" price of $75 !…Continue

 

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Latest Activity

Mike Baldwin liked Michael Lawton's discussion The Manufacture of an E H Scott All Wave 15 Radio Receiver
Feb 4
Kent King replied to Michael Lawton's discussion The Manufacture of an E H Scott All Wave 15 Radio Receiver
"Thanks Mike! Years ago, the former Scott Historical Society sold these on VHS tape. I still have a few of them laying around here. I should do a video transfer to make my own copies...but I'm glad whoever posted them on YouTube got them out…"
Feb 4
Michael Lawton posted a discussion

The Manufacture of an E H Scott All Wave 15 Radio Receiver

I just found these YouTube videos I think folks here would enjoy as much as I did... https://www.youtube.com/watch?v=esYrR_joF3I and... https://www.youtube.com/watch?v=nJY7P_e0edg "The Manufacture of an E H Scott All Wave 15 Radio Receiver"See More
Feb 4
Michael Lawton liked Chuck Wolf's photo
Nov 10, 2021
Michael Lawton liked Chuck Wolf's photo
Nov 10, 2021
Michael Lawton replied to Michael Lawton's discussion Amplitude Modulation and Bandwidth...
"Yes, Igor, that is pretty much what I said, however perhaps in simpler words. The principle is THE SAME with both AF amplitude modulation of an RF carrier frequency, and the combination a received RF signal with a local oscillator signal to produce…"
Sep 30, 2021
Igor Golioto replied to Michael Lawton's discussion Amplitude Modulation and Bandwidth...
"Just another take- The answer is in the mathematics of a modulated AM signal.  Without a lengthy treatise of the equations, when an audio signal of let's say 5 kHz bandwidth (realistically containing audio signal from 40 Hz to 5 kHz) is…"
Sep 30, 2021
Michael Lawton replied to Michael Lawton's discussion Amplitude Modulation and Bandwidth...
"Yes, David, I understand that principle, basically what the small caps do is DE-TUNE the IF transformer, thus broadening the passed band of frequencies, and reducing the selectivity. What I was always hazy about was the WHY of the sidebands, WHY did…"
Sep 26, 2021
David C. Poland replied to Michael Lawton's discussion Amplitude Modulation and Bandwidth...
"Forget about the notion of side bands for audio quality. I think of it this way with regard to the IF amplifier.  The audio signal is a low frequency amplitude signal (with an audio range of maybe 80 to 4000 HZ of maybe 50 to 8000 Hz) which is…"
Sep 25, 2021
Michael Lawton posted a discussion

Amplitude Modulation and Bandwidth...

     Over the years I have heard a lot of discussions about bandwidth in AM radio. Thinking about the basics of amplitude modulation, I never quite understood what all this fuss was about, or exactly HOW these "sidebands" ended up being generated. After all, AM is merely the increasing and decreasing of the carrier wave strength based on the fluctuation of an audio wave form. The detection of the signal merely consists of the rectification of that carrier wave, and the smoothing out of the…See More
Sep 25, 2021
Michael Lawton replied to Kent King's discussion Scott serial numbers
"Hi Kent, Not sure if You caught it from the picture of the serial number plate I posted when I was refurbishing my SLRM, but the number is 2446. Also, my 800B tuner is 1405."
Sep 12, 2021
Michael Lawton replied to Igor Golioto's discussion Early RC-2 Garrard changer
"Thanks for the heads up, Igor, but, looking at the condition of that turntable versus the price, I am reminded that "a fool and his money are soon parted." $652.50, PLUS $213.60 shipping !!! That might be believable were the turntable in…"
Aug 9, 2021
Kent King replied to Michael Lawton's discussion My 800B, a slow work in progress...
"Michael - Yes, they are...if you hadn't found one, I have a few to spare for restorations. - Kent"
Aug 8, 2021
Michael Lawton replied to Michael Lawton's discussion My 800B, a slow work in progress...
"I was wondering about getting the proper Jones plug for my speakers to connect to the amp, but, much to my happy relief, I found they are still commonly available from eBay ! I ordered one."
Aug 7, 2021
Michael Lawton replied to Michael Lawton's discussion My 800B, a slow work in progress...
"These are the speakers I plan on using with this system, a 15" woofer made by 5 Core which has a wide frequency response for such a large speaker, just as the old ones had. This is due to it having a VERY heavy magnet. It is well made, as you…"
Aug 6, 2021
Mike Baldwin replied to Michael Lawton's discussion My 800B, a slow work in progress...
"Thanks Michael, kind of an early serial number I would think. Mine are in the 4000 and 6000 ranges. Mike"
Aug 6, 2021

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Michael Lawton's Blog

My 800B tuner chassis arrived...

Posted on March 3, 2021 at 10:47pm 4 Comments

Today the 800B tuner chassis I bought off eBay for $75 arrived. It seems to have traveled none the worse for wear. I was rather surprised to find that just this tuner weighs as much as my whole SLRM, or seems to just picking it up. I haven't actually weighed it. Now that it has arrived, here are some pictures of it...…

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At 9:33pm on February 27, 2021, Mike Kennedy said…
Are you still looking for an 800B amp?
 
 
 

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