[amsat-bb] Modulation levels on AO-85

[R.T.Liddy]

"...food in the mic hole, etc."!!!  LOL!!!  - Bob  K8BL
      From: Matthew Stevens <matthew at mrstevens.net>
 To: Joe <nss at mwt.net> 
Cc: amsat-bb at amsat.org
 Sent: Sunday, August 13, 2017 7:25 PM
 Subject: Re: [amsat-bb] Modulation levels on AO-85
   
Like Jerry said, its more an issue with mic gain or poor mic technique than anything else.

- Matthew nj4y

Sent from my iPad

> On Aug 13, 2017, at 19:18, Joe <nss at mwt.net> wrote:
> 
> Plus a LOT of people are running Narrow Modulation now.
> Joe WB9SBD
> Sig
> The Original Rolling Ball Clock
> Idle Tyme
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>> On 8/13/2017 6:14 PM, Jerry Buxton wrote:
>> 5 kHz is the nominal "wide" setting for ham radio equipment on the
>> VHF/UHF bands.  So a rig set to 5 kHz is what we all usually expect.
>> 5 kHz deviation with 3 kHz audio (the usual top for most voice) would be
>> about 16 kHz bandwidth.  The deviation number alone is not equal to
>> bandwidth.  ("Carson's Rule")
>> Low audio is usually just that, not talking loud enough, not talking
>> into the mic properly, mic gain setting too low, food in the mic hole, etc.
>> 
>> Jerry Buxton, NØJY
>> 
>>> On 8/13/2017 17:55, Ronald G. Parsons wrote:
>>> I’ve noticed lately that many stations on AO-85 have barely audible modulation. Yet other stations have clear audio with good quieting. I have heard the some manufacturers of hand-held and mobile rigs are setting their maximum deviation to 5 kHz or even less. I have noticed the same effect on local repeaters. Has anyone done any tests of the deviation required for reasonable quieting on AO-85? Or are more stations using lower power than in the past?
>>> 
>>> Ron W5RKN
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>> _______________________________________________
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> 
> _______________________________________________
> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions expressed
> are solely those of the author, and do not reflect the official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
_______________________________________________
Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
to all interested persons worldwide without requiring membership. Opinions expressed
are solely those of the author, and do not reflect the official views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb


   

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