[AMRadio] Source Broadcast Xmtrs

[Bernie Doran]

----- Original Message ----- 
From: "Ron Youvan" <ka4inm at tampabay.rr.com>
To: "amradio" <amradio at mailman.qth.net>
Sent: Saturday, June 11, 2011 9:26 PM
Subject: Re: [AMRadio] Source Broadcast Xmtrs


> Bernie Doran wrote:
>
>> " big iron limits the fidelity in ways that a rice box doesn't" what an 
>> interesting view, rice
>> boxes cut off the lows and also cut off the mid and highs 300 to 2100 
>> seems typical, so I guess
>> if the definition of fidelity is 300 to 2100 then perhaps the big iron 
>> does limit fidelity. of
>> course now someone will chip up and say we can only use 3 kc bandwidth, 
>> or that we need to
>> conserve bandwidth, does it wear out after a period of time?
>
>   No, would you like to have your audio bandwidth out to 5 kc?  Have a 
> signal 10 kc wide? *
> even with the rule:
> <
> Part 97 : Sec. 97.307 Emission standards
> (a) No amateur station transmission shall occupy more bandwidth than 
> necessary for the information
> rate and emission type being transmitted, in accordance with good amateur 
> practice.
> >
>   If you want REAL fidelity, try FM, see you on 29+ MHz.  (or 2 meters)
>
> * if the next CARRIER (QSO) is 5 kc away the two sidebands will over lap 
> and you will hear each
> others AND there will be a constant 5 kc tone while OM talks.  To avoid 
> this you will have to stay
> 10 kc from me and IF your receiver has wide bandwidth there will be a 10 
> kc whistle, which is why
> rice boxes usually have a 6 kc AM bandwidth
> -- 
>    Ron  KA4INM - You can't fool me ...
>                       ... I'm a moron.
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