[AMRadio] AM Broadcast Quality


Bernie Doran qedconsultants at embarqmail.com
Mon Dec 16 16:58:42 EST 2013


This is a croc!  So 450 cy to 1k would sound fine?    Bernie---- Original 
Message ----- 
From: "Kim Elmore" <cw_de_n5op at sbcglobal.net>
To: "W2XJ" <w2xj at w2xj.net>
Cc: <amradio at mailman.qth.net>
Sent: Monday, December 16, 2013 4:37 PM
Subject: Re: [AMRadio] AM Broadcast Quality


> Now THIS is pretty cool. Thanks for sharing it!
>
> Kim N5OP
>
> "People that make music together cannot be enemies, at least as long as 
> the music lasts." -- Paul Hindemith
>
> On Dec 16, 2013, at 14:12, W2XJ <w2xj at w2xj.net> wrote:
>
>> A good guideline is that the product of the lowest and highest modulating 
>> frequencies should equal 450,000.  That is 90 to 5 KHz, 150 to 3KHz, 166 
>> to 2.7 KHz. That will yield the best tonal balance for the chosen 
>> bandwidth.
>>
>> Sent from my iPad
>>
>>> On Dec 16, 2013, at 2:52 PM, Steve WA1QIX <wa1qix at piesky.com> wrote:
>>>
>>> Well, first, good quality does not necessarily have to be excessively 
>>> wide
>>> and second, the object may not be simply to communicate.  If that were
>>> the case, we could use our cell phones for a whole lot less money !!
>>>
>>> Communication does not necessarily imply poor quality.  In fact, part
>>> of the communication is the actual sound of the person's voice, not
>>> merely what is being said.  So, if that is reproduced in good fidelity,
>>> more is being communicated.
>>>
>>> The military is dealing with life-and-death situations, where
>>> getting the message across was (and is) the most important.
>>> Everything else was unimportant.  Ham radio is not like that
>>> most of the time, although we have the ability to quickly go
>>> to max communications effectiveness when needed.
>>>
>>> Just my thoughts!
>>>
>>> Regards,  Steve
>>>
>>>
>>> At 02:04 PM 12/16/2013, W. Harris wrote:
>>>> I keep hearing people talk about broadcast quality in regards to ham 
>>>> radio AM transmissions. Why should anyone strive for such quality when 
>>>> the object is to communicate using no more band width than necessary?
>>>>
>>>> Bill - K5MIL
>>>>
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