[Amps] S/S Amp's

[Carl]

Actually it was renewed yesterday afternoon online.

Carl
KM1H


----- Original Message ----- 
From: "Mark Bitterlich" <markbitterlich at embarqmail.com>
To: "Carl" <km1h at jeremy.mv.com>; "Fuqua, Bill L" <wlfuqu00 at uky.edu>; "Joe 
Subich, W4TV" <lists at subich.com>; <amps at contesting.com>
Sent: Saturday, September 14, 2013 1:12 PM
Subject: Re: [Amps] S/S Amp's


> Actually I quite enjoyed his comments.
>
> Mark
> WA3JPY
>
> p.s.  And speaking of trivia ......... KM1H expires in 21 days.   The 
> license I mean, not the person.  :-)
>
>
> ----- Original Message ----- 
> From: "Carl" <km1h at jeremy.mv.com>
> To: "Fuqua, Bill L" <wlfuqu00 at uky.edu>; "Joe Subich, W4TV" 
> <lists at subich.com>; <amps at contesting.com>
> Sent: Friday, September 13, 2013 8:31 PM
> Subject: Re: [Amps] S/S Amp's
>
>
>> Thanks for the prehistoric trivia lesson (-;
>>
>> I was referring to vacuum tube technology where AM was at least 
>> understandable to some degree of quality.
>>
>> Carl
>> KM1H
>>
>>
>> ----- Original Message ----- 
>> From: "Fuqua, Bill L" <wlfuqu00 at uky.edu>
>> To: "Carl" <km1h at jeremy.mv.com>; "Joe Subich, W4TV" <lists at subich.com>; 
>> <amps at contesting.com>
>> Sent: Friday, September 13, 2013 1:05 PM
>> Subject: RE: [Amps] S/S Amp's
>>
>>
>>  What became known as Exalted AM was really a technique that was used
>> back in the later spark era days once they developed nearly CW sources.
>> In fact that is where the term local oscillator and BFO came from. They 
>> discovered
>> if an oscillator near the frequency you were receiving was coupling into 
>> the diode detector,
>> you not only had a beat tone but the sensitivity increased over 100 times 
>> sometimes up to
>> 500 times. This was because the detector was being over driven to 
>> saturation during have
>> of the oscillator cycle and was behaving as a RF switch. It was 
>> performing more as a
>> product detector rather than a square law detector. In fact Marconi 
>> Patented the first
>> balanced product detector in 1916. It used a buzzer and high Q tank 
>> circuit for the BFO or
>> Local Oscillator. Local oscillator means an oscillator near the detector.
>>  By the way, another interesting fact, unrelated, Hertz discovered the 
>> photo electric effect
>> before 1900.
>>
>> 73
>> Bill wa4lav
>>
>> ________________________________________
>> From: Carl [km1h at jeremy.mv.com]
>> Sent: Thursday, September 12, 2013 9:49 PM
>> To: Fuqua, Bill L; Joe Subich, W4TV; amps at contesting.com
>> Subject: Re: [Amps] S/S Amp's
>>
>> By using the Exalted AM method that goes back 70 years you dont need a 
>> fancy
>> radio.
>>
>> Modify the BFO for variable injection level and connect to the last IF
>> thereby maintaining AGC. Its almost as good as a sync detector for 
>> selective
>> fading and its easier to follow a slightly drifting carrier.
>>
>> Carl
>> KM1H
>>
>>
>> ----- Original Message -----
>> From: "Fuqua, Bill L" <wlfuqu00 at uky.edu>
>> To: "Joe Subich, W4TV" <lists at subich.com>; <amps at contesting.com>
>> Sent: Thursday, September 12, 2013 4:14 PM
>> Subject: Re: [Amps] S/S Amp's
>>
>>
>>>  Most hams today can't tune SSB clearly.
>>> AM always sounds right. Perhaps we should have SSB reduced carrier 
>>> rather
>>> than
>>> suppressed carrier. Another point, DSB occupies same bandwidth as AM.
>>>  You could receive DSB or AM by detecting, using bfo and SSB filter, 
>>> only
>>> one sideband but with the loss
>>> of 3dB signal to noise ratio compared to receiving it with synchronous
>>> detector.
>>> 73
>>> Bill wa4lav
>>>
>>> ________________________________________
>>> From: Amps [amps-bounces at contesting.com] on behalf of Joe Subich, W4TV
>>> [lists at subich.com]
>>> Sent: Thursday, September 12, 2013 2:29 PM
>>> To: amps at contesting.com
>>> Subject: Re: [Amps] S/S Amp's
>>>
>>> For the same reason they spam other bands with ESSB, IM products,
>>> keyclicks, splatter and/or full carrier AM - because they can and
>>> the rules against stupidity, and bad operating practices either do
>>> not exist or are not enforced.
>>>
>>>
>>> 73,
>>>
>>>    ... Joe, W4TV
>>>
>>>
>>> On 9/12/2013 12:14 PM, qrv at kd4e.com wrote:
>>>> Why are Hams still rf-spamming 160 & 80m with AM carriers
>>>> when a DSB suppressed-carrier signal is just as good, uses
>>>> less power, and may be sync-detected to remove flutter, etc?
>>>>
>>>> I know, I know, ... never mind ... sigh.
>>>>
>>>>> Jim said;
>>>>>
>>>>> "It sure would be nice to just rectify the 120vac from the wall plug,
>>>>> with
>>>>> or without any isolation xfmr"
>>>>>
>>>>> It's already in production.
>>>>>
>>>>> Not quite what you're after but... <http://www.k7dyy.com/>
>>>>> http://www.k7dyy.com/
>>>>>
>>>>> David G4ZOW
>>>>
>>>>
>>>>
>>> _______________________________________________
>>> Amps mailing list
>>> Amps at contesting.com
>>> http://lists.contesting.com/mailman/listinfo/amps
>>> _______________________________________________
>>> Amps mailing list
>>> Amps at contesting.com
>>> http://lists.contesting.com/mailman/listinfo/amps
>>>
>>>
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>>
>>
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>> _______________________________________________
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>> Amps at contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>
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