[SADXA] 30M question- pt 2

Jim KF7E jim_kf7e at cox.net
Sun May 10 16:46:52 EDT 2020


     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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