Fairhaven RD500 User Manual - 4.6
4.6
Pass band shifting.
Pass band tuning allows reduction in the receiver’s I.F. bandwidth for reducing
adjacent channel interference such as overlapping ssb signals. It will also work in
SYNC-AM or CW modes.
Control is provided by selecting <SHIFT> Key 6. (PBS) and pressing the up and
down keys. This simultaneously varies the BFO frequency in steps, whilst
automatically correcting the receiver tuning. The receiver can still be tuned while this
display is active. The quality of the audio will be degraded as the bandwidth is varied,
due to a reduction in the upper or lower audio frequencies.
Pass band shift menu.
14.12345 USB
PBS+1.1kHz Use DN/UP
4.7
VFO selection.
There are 26 VFO’s selections which give spot frequencies with definable
mode, name and auxiliary settings. These are used as temporary “scratch pad” or
favourite memories and are also useful where two stations are in conversation on
different frequencies, in the way that conventional A/B VFO’s are used. Typically the
user may set a VFO on each band.
the key pad can then be used to change the vfo, for example repeatedly pressing key 2
gives vfo’s A, B, and C, and key 3 gives vfo’s D,E,F, etc. The tuning wheel and up
and down buttons will also change the selected vfo whilst in this mode. A text search
can be carried out to find a specific vfo name, by pressing press
and entering a search word, followed by
selected vfo. The vfo text line can be cleared by pressing
Pressing cancel from any menu will always put the receiver back into normal
vfo tuning mode.
A: 14.12345 AMW
… VFO T e x t f i e l d…
4.8
Step size selection
Tuning step size selection can be altered by pressing SHIFT - Key 8, the up and down
keys are used to scroll through the step size options and the chosen step size is also
used when scanning. The step size should usually be set for “Normal” which allows