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List:       opensuse
Subject:    Re: [opensuse] raspi dropping wifi ?
From:       Bruce Ferrell <bferrell () baywinds ! org>
Date:       2020-06-22 21:30:09
Message-ID: cbef4193-f1d3-9818-fa75-90c12ffeccee () baywinds ! org
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On 6/22/20 10:42, James Knott wrote:
> On 2020-06-22 01:20 PM, Per Jessen wrote:
>> Really ?  I haven't been active as a ham for a long time, but last time,
>> the power rating was specified as ERP, certainly not DC input power.
>
> ERP tends to be used for commercial services, which takes antenna gain 
> and feedline loss into consideration.  With amateur radio, at least in 
> North America, it's either DC input power or peak envelope power, 
> depending on the signal type.
>
James,

Do you hold an amateur license?  I do and have off and on since high 
school.  I also used to hold a commercial radio license as well (long 
ago expired).

The law specifies the limits as ERP for commercial as well and amateur 
emissions for exactly the reasons you enumerated... The combinations of 
antenna gain, line loss etc,  to prevent quasi-lawyers form cranking the 
combination to emit beyond the lawful levels and then pointing the 
particular parameter that is in spec and claiming to be legal.

It's also why amateurs are held fully accountable for violations that 
exceed ERP.



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