[SADXA] 30M question- pt 2

[Jim W]

On 5/10/2020 1:46 PM, Jim KF7E wrote:
>     The PEP reference came from :
>
>
>
> digital
>
>
>        United States[edit
> <https://en.wikipedia.org/w/index.php?title=WARC_bands&action=edit&section=17>]
>
> License class     10.100-10.150
> Ext., Adv., Gen. (200 watts)     CW, narrow-band digital
>
> The USA (Region 2) limits amateur radio users to 200 watts peak 
> envelope power <https://en.wikipedia.org/wiki/Peak_envelope_power> on 
> this band.^[9] <https://en.wikipedia.org/wiki/WARC_bands#cite_note-9> 
> ^[10] <https://en.wikipedia.org/wiki/WARC_bands#cite_note-10>
>
>
>     `Which was on this source: https://en.wikipedia.org/wiki/WARC_bands
>
>     References (9 (10) :
>
>     I know the restrictions on the USA 60m band are EIRP, but I've 
> seen it quoted both ways in different sources for 30m...
>
>     Since there a lot of gain antennas in use in USA for 30m, I will 
> assume the correct spec is PEP.
>
>     BTW I hear crashes as of 2045Z and see the lightning map is active 
> in AZ. Keep your weather eyes open.
>
> Jim
>
>
>
> On 10-May-20 09:52, Jim W wrote:
>> On 5/10/2020 7:16 AM, Jim KF7E wrote:
>>> GM Bill:
>>>
>>>     I believe the ITUs World Administrative Radio Conference in 1979 
>>> created the 12, 17, 30m bands, and the implementation of allowable 
>>> modes and power was left up to the countries comprising ITU Zones 
>>> 1,2,3.
>>>
>>>     USA (ITU Region 2) adopted the 200w PEP output limit out of 
>>> consideration for interference to other (primary) users still 
>>> operating there at the time of adoption.
>>>
>>> Jim  KF7E
>>>
>>>
>>> On 10-May-20 06:21, Bill Mullin wrote:
>>>> I have a question for the low band guru's among us - why is there a 
>>>> 200W limit on this band?
>>>>
>>>> 73, Bill  AA4M
>>>>
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>>>
>> I think Jim meant to say ERP (Effective Radiated Power) rather than 
>> PEP (Peak Envelope Power).
>>
>> 73,  Jim  W9FI
>>
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Yes, I stand corrected, since the pulses from data and RTTY signals can 
be measured in with a PEP watt meter.  In fact I'd rather measure PEP 
than ERP.  At least I have the equipment to do that.  Measure ERP?  
Well, that's a different story.

Jim W.