Waste not, want not! Radio amateurs are a breed
of electronics enthusiasts who like to see every
milliwatt of their precious RF power arriving where
it belongs: at the antenna terminals. However,
budgets being what they are (RF plugs and
low-Ioss coax cable are pretty expensive ...),
impedance mismatches occur readily between the
transmitter and the aerial, causing power
reflection. The low-cost instrument described here
will tell hams operating in the 160 m through 4 m
bands the ratio of the forward to the reflected RF
power.
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