[Yaesu] RF Metering

Sun Jun 5 08:19:28 EDT 2011

Well certainly the power being measured is carrier power or some continuous
wave perhaps generated in SSB mode by a tone at a level the same as peak
voice amplitude. An electro-mechanical meter's ballistics won't allow for
measuring the peak power from a speaking voice. And always to this
measuring into a 50 ohm resistance-J0 load, or whatever characteristic
transmitter output and feedline Z the system is.
73
Rob
K5UJ
On Wed, Jun 1, 2011 at 11:45 AM, Bob <kc3vo at aol.com> wrote:
> Thermocouples in RF meters are a very POOR choice for measuring SSB
> voice signals, due to the slow response! A Bird 43P is MUCH better for
> SSB peak power, the thermocouple is OK for CW of FM type, AVERAGE power
> readings, but finding a thermocouple with low enough inductance for
> UHF/ MICROWAVE accuracy is likely to be a problem.--73, KC3VO, Bob Curry
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