Central States VHF Society
Noise Figure Measurements
1995 - 2010
The Central States VHF Society has conducted Noise Figure Measurements
since the late 1970's. In the early days results were tabulated and
sent out with the following years conference announcement. In more
recent years the results have been handed out at the end of the conference.
The results are usually also published in the following year's proceedings.
The published results can be used to make comparisons between commercial
and homebrew preamps, between different homebrew designs, and between
different devices from different manufacturers. In recent years the equipment
used to measure noise figure has been the HP8970 Noise Figure Meter
and HP346A Noise Source. Measurement accuracy of the system according
to HP is +/- 0.2 db!
The Noise Figure Measurements have been for many years conducted under the diligent
guidance of Al WB5LUA and Tommy WD5AGO. Al and Tommy have provided equipment and the
expertise that has made the results published by CSVHFS a recognized standard. In
recent years, others have stepped up as well, like Tony WA8RJF and Pete K9PW, and so
on. The Society sincerely appreciates their hard work and dedication.
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