[600MRG] New Article posted

Warren K2ORS k2ors at verizon.net
Tue Jan 20 08:30:59 CST 2015


Jim,


      Extremely simple, just a current transformer and a half-wave 
rectifier with a filter, see:
http://www.w1tag.com/RFA.htm

73 Warren



On 1/20/2015 9:26 AM, Jim Miller wrote:
> I've found links to RF ammeters for the "normal" HF bands. Can someone
> suggest a link for an RF ammeter suitable for 630m.
>
> Thanks
>
> Jim ab3cv
>
> On Mon, Jan 19, 2015 at 6:00 PM, Neil Klagge <w0yse at msn.com> wrote:
>
>> There is a new article on http://630m.net/dev/ under Transmit antennas.
>> It is my latest revision of a spreadsheet to calculate the radiation
>> resistance, Rr, of a short vertical antenna, with or without top loading.
>> It will also calculate ERP and EIRP if you can measure your RF amperes
>> into the base of your antenna, using the calculated Rr from the spreadsheet.
>>
>> 73
>> *´¨)
>> ¸.•´¸.•*´¨) ¸.•*¨)
>> (¸.•´ (¸.•`   Neil
>>
>> My Faith website: http://neilsfaith.webs.com/
>> My ham radio websites: http://w0yse.webs.com/ and http://wg2xsv.webs.com
>>
>>
>>
>>
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>>
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