|This article describes F6DFZ's implementation of a peak amplifier for use with a Bird directional coupler to measure Peak Envelope Power of SSB telephony waveforms.|
The ITU Radio Regulations define the terms Peak Envelope Power, Mean Power and Carrier Power with regard to a radio transmitter. The terms are defined as:
Note: For use in formulae, the symbol p denotes power expressed in watts and the symbol P denotes power expressed in decibels relative to a reference level.
The advantages of a PEP measurement capability are:
|R6, R7, R8||100,000|
This amplifier is based on Fig 2 at Peak amplifier for directional wattmeter / SWR meter with F6DFZ's values selected to suit the Bird 43 coupler element, see Table 1 above.
Figure 1 shows the Bird remote coupler with 43 coupler element.
Figure 2 shows the printed circuit board designed and manufactured by F6DFZ.
Figure 3 shows the backlit meter head with PCB housed in a die cast box and custom scaled meter.
A very professional result, start to finish!
© Copyright: Owen Duffy 1995, 2020. All rights reserved. Disclaimer.