The intelligibility of SSB voice operations
becomes degraded when the receiver and
transmitter differ in frequency by a small
amount. approximately 50 Hz). The voice
pitch will sound either too high or too low.
The cause may be either the receiver or
transmitter. The clarifier control is used to
slightly shift the receiver-generated frequen-
cy to match the frequency of the signal being
i. Frequency accuracy - Check
(1) Station WWV - Select the
frequency that provides
the best signal. The sta-
tion broadcasts on 2.
5000, 5.0000, 15.0000,
20.0000, and 25.0000
MHz. The higher the fre-
quency selected, the more
accurate the frequency
check will be.
Do not key transmitter when set to WWV.
(2) Mode selector switch -