EMRFD Message Archive 1651

Message	Date	From	Subject
1651	2008-05-23 09:28:22	richj_focus	Need a power standad
Group: I am building the PIC power meter from Kanga and it need a 7dBm calibration source. I have a calibrated 0 dBm source so what amp would one seggest to give me exactly 7 dB of gain? rich
1656	2008-05-23 11:43:32	John Shepherd	Re: Need a power standad
Rich M3 Electronics offers a useful 10 MHz. Calibration Source, for $95, at: http://www.m3electronix.com/rfcal.html This will give you 0 dBm and -30 dBm. If you calibrate using these two points, I believe that the Kanga meter will extrapolate to +7 dBm. John VA3AAD
1664	2008-05-24 00:35:38	Hari G	Re: Need a power standad
Rich , Some time back there was an article by K3NHI on a power source using a 10MHZ can oscillator , with a multimeter or a oscilloscope you can calibrate that for -20dbm.And if you have a good 10db attn you you get -30dbm also . Iam using that for calibrating my power meter. Best Regards Hari VU2GHB On 5/23/08, John Shepherd <john@eternalchaos.com> wrote: > > Rich > > M3 Electronics offers a useful 10 MHz. Calibration Source, for $95, at: > > http://www.m3electronix.com/rfcal.html > > This will give you 0 dBm and -30 dBm. If you calibrate using these two > points, I believe that the Kanga meter will extrapolate to +7 dBm. > > John > > VA3AAD > >