[AMRadio] Source Broadcast Xmtrs

[W2XJ]

but what does this have to do with the essence of this discussion?



On 6/11/11 11:44 PM, Charles Ring wrote:
>
> The FCC standard for broadcast AM has been 7.5KC and I doubt any 
> commercial AM radios have ever gone beyond that. In recent decades the 
> radios have become more and more narrow as AM has become deprecated by 
> big business.. A few years ago Clear Channel ordered its AM stations 
> to cut off audio at 5KC in order to clear space for digital "HD Radio" 
> which has become a disaster itself, especially on AM. Suit and tie 
> ignorance all the way.
>
> 73 de W3NU
>
>
>
>
> On 6/11/2011 9:09 PM, W2XJ wrote:
>> Commercial AM transmitters have a frequency response to 15 kilohertz
>> there are a handful that have an audio response to 50 kilohertz. The new
>> digital systems require at least a 30 kilohertz audio response.
>>
>> On 6/11/11 7:58 PM, Bob Macklin wrote:
>>> Bandwidth for communications quality AM is +/- 3KC. Commercial AM 
>>> broadcast
>>> transmitters have more bandwidth than this. Close to +/- 5KC.
>>>
>>> Bob Macklin
>>> K5MYJ
>>> Seattle, Wa.
>>> "Real Radios Glow In The Dark"
>>> ----- Original Message -----
>>> From: "Bernie Doran"<qedconsultants at embarqmail.com>
>>> To:<ka4inm at tampabay.rr.com>; "Discussion of AM Radio in the Amateur
>>> Service"<amradio at mailman.qth.net>
>>> Sent: Saturday, June 11, 2011 4:48 PM
>>> Subject: Re: [AMRadio] Source Broadcast Xmtrs
>>
>