[AMRadio] GG 813 Linear in GE Ham News


Gary Schafer garyschafer at comcast.net
Thu Sep 29 12:53:58 EDT 2005


You got it Geoff!! :>)

73
Gary  K4FMX

W5OMR/Geoff wrote:
> Gary Schafer wrote:
> 
> See?  I -knew- I was getting muddled again. (~sigh~)
> 
> Gary, let me apologize for not understanding your statements, but I'll 
> stand by what I said to be wholly true.
> 
> I've been corrected, and it's a true statement.  Read below"
> 
>> Gary wrote:
>>
>>> It does not matter what type of signal is modulating the signal when
>>>
>>>> the linear amp is involved. Whether it is a sine wave or speech or 
>>>> anything else. The PEP rule still applies for 100% modulation! You 
>>>> can not exceed 100% positive peak modulation if the carrier is set 
>>>> at any level greater than 1/4 the PEP output capability of the 
>>>> amplifier. Unless you want to operate it in a non linear mode.
>>>
>>>   
>>
>>
>> Geoff Wrote:
>>  
>>
>>> <>>I Disagree with that.
>>
>>
>> Gary's statement is true.
>>
>> He is speaking of the PEP max output capability of the AMP. If the PEP 
>> maxoutput of the amp is 1000 watts then regardless of the symmetry of 
>> the audio, <>250 watts is the max carrier it should run on output. If 
>> asymmetrical then you would need to reduce the carrier to maybe 100 
>> watts output. At 250 watts carrier output the amp would reach 
>> saturation before 100% modulation in any case.
> 
> 
> 
> Sorry, sir.
> 
> -- 
> 73 = Best Regards,
> -Geoff/W5OMR
> 
> 
> 






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