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#1
July 23rd 12, 07:45 PM
posted to rec.radio.amateur.antenna
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315mhz/433mhz transmitter
On 7/23/2012 12:30 PM, Jeff Liebermann wrote:
On Mon, 23 Jul 2012 11:54:01 -0500, John S wrote: On 7/23/2012 11:21 AM, Jeff Liebermann wrote: On Mon, 23 Jul 2012 08:56:41 -0500, John S wrote: On 7/23/2012 1:28 AM, Jeff Liebermann wrote: On Sun, 22 Jul 2012 23:21:12 -0700, Jeff Liebermann wrote: FCC 15.209 http://louise.hallikainen.org/FCC/FccRules/2012/15/209/ 200 uv/meter maximum, measured at 3 meters. That works out to about -46dBm ERP or about 12 milliwatts into a unity gain antenna. Sorry, brain damage. The -46dBm should be 10.8dBm ERP Hmmm... my calculator says P = 12 nanowatts. Your calculator is correct. My -46dBm is wrong. It was late, I was multitasking, the phone range, I was tired, etc. Sorry for the muddle. +10.8dBm converts to 12 mw. 12 nw is -49 dBm. Why are you still using 12 mw? The 12mw is correct. Please show your work. |
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