[AMRadio] Linear Efficiency on AM


Gary Schafer garyschafer at comcast.net
Thu Sep 29 10:23:37 EDT 2005


Hi Eddy,

Yes that is also a good rule.

73
Gary  K4FMX

gswynar at webmail.durham.net wrote:
> Gary...
> 
> Look at the tube charts for the tube(s) you are planning to use, take note
> of the plate dissipation...your carrier output should be HALF of that
> figure for safe use as an AM linear.
> 
> ~73~ Eddy VE3CUI - VE3XZ
> 
> 
> 
> 
>>With an AM linear the efficiency at carrier must be / will be exactly
>>one half what it is at PEP. Provided it is tuned properly.
>>
>>73
>>Gary  K4FMX
>>
>>
>>John E. Coleman (ARS WA5BXO) wrote:
>>
>>>	I would say that is about right Brian.  There has been some
>>>discussion about this here in the past.  It has been shown that in some
>>>cases the efficiency actually is less at carrier level and goes up to
>>>35%
>>>with modulation when working properly.
>>>
>>>John,
>>>WA5BXO
>>>
>>>-----Original Message-----
>>>From: amradio-bounces at mailman.qth.net
>>>[mailto:amradio-bounces at mailman.qth.net] On Behalf Of
>>>bcarling at cfl.rr.com
>>>Sent: Wednesday, September 28, 2005 5:06 AM
>>>To: Discussion of AM Radio
>>>Subject: RE: [AMRadio] Pi-Net vs Link Couple
>>>
>>>ON another group they claim that you can get AT BEST
>>>35% efficiency with AM LInear mode with ANY class
>>>linear amplifier.
>>>
>>>
>>>
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>>>
>>
>>
>>
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>>
> 
> 
> 
> 






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