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1. Topband: Bird Meter (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Thu, 22 Sep 2005 13:48:35 -0400; The same directly and Ohms, and reactive. As for power, the Bird samples a vector sum of line current and line voltage with its directional coupler. A properly calibrated Bird 43 meter, when used wi; /archives//html/Topband/2005-09/msg00070.html (8,364 bytes)
2. Re: Topband: Bird Meter (score: 1): Author: "Mauri" <i4jmy@iol.it>; Date: Fri, 23 Sep 2005 18:10:15 +0200; Just as I told and You confirmed, the real power is not directly measured by a bird wattmeter when load isn't 50 Ohms. The real power (when a reflected power is existing) is only obtainable by subtr; /archives//html/Topband/2005-09/msg00080.html (8,933 bytes)
3. Re: Topband: Bird Meter (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Fri, 23 Sep 2005 14:10:05 -0400; is, but power The thermocouple meter reads only one vector, current. It does not measure voltage or phase. You have only one scalar measurement and power is a function of the square of that reading.; /archives//html/Topband/2005-09/msg00081.html (9,490 bytes)
4. Re: Topband: Bird Meter (score: 1): Author: "Mauri" <i4jmy@iol.it>; Date: Mon, 26 Sep 2005 10:46:01 +0200; Bird 43 is a useful instrument, and I agree with your points about directional coupler meters advantages. Sensors, diodes or thermocouples (bolometers) have instead pros and cons. It remains the fact; /archives//html/Topband/2005-09/msg00090.html (9,534 bytes)

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