Operation Manual

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FUNCTION FOR RECEIVE
■ Simple band scope
This function allows you to visually “sweep” an area
surrounding the set frequency for other signals. De-
tected signals are indicated graphically in the dot ma-
trix section of the display.
NOTE: Use the attenuator or turn OFF the preamp
when using the band scope on a band containing a lot
of noise.
q Set a mode and frequency.
w Select G1.
•Push [DISPLAY] once or twice to select G.
• Push [MENU] one or more times to select G1.
e Push [F-1] one or more times to select the desired
steps.
•Each dot corresponds to a step for the indicated fre-
quency.
•0.5k, 1k, 2k, 5k, 10k, 20k and 0.1M (100 kHz) can be
set for the scope step.
r Push [F-3] to start the sweep.
•“___” (below SWP) flashes while sweeping.
• The receive audio is muted while sweeping.
t Rotate the main dial if you want to monitor the dis-
played signals.
•The sweep marker indicates the location of the dis-
played frequency in the sweep readout.
•If the displayed frequency is outside of the sweep read-
out (determined by the sweep width), the sweep marker
flashes.
y Push [F-2] to return the frequency to the start of a
sweep.
• The sweep marker moves back to the center position.
1k
SWP
2k
SWP
2k
SWP
2k
SWP
___
2k
SWP
Select sweep width
([F-1])
Start sweep
([F-3])
Sweep is finished
([F-3] again)
Move sweep marker
(main dial)
2k
SWP
Returns to previous
frequency ([F-2])
sweep marker
Main dial
[DISPLAY][MENU]
[F-2]
[F-3][F-1]
■ Preamp and attenuator
The preamp amplifies received signals in the front
end circuit to improve the S/N ratio and sensitivity.
Turn this function ON when receiving weak signals.
The attenuator prevents desired signals from distort-
ing when very strong signals are near the desired fre-
quency or when very strong electric fields, such as
from broadcasting stations, are near your location.
Push [P.AMP/ATT] momentarily to turn the preamp ON
and OFF; push for 1 sec. to turn the attenuator ON.
•Lights green when the preamp is ON; lights red when
the 20 dB attenuator is ON.
• Only one of these functions can be activated at a time.
momentarily
momentarily 1 sec.
P.AMP/ATT
P.AMP/ATT
[P.AMP/ATT]
P.AMP/ATT
Lights green while the preamp is activated;
lights red while the attenuator is activated.
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