Search - AOR AR8000 Operating Manual

(13) SEARCH - search banks and frequency pass
The AR8000 has a SEARCH mode whereby an upper and lower frequency
limit may be defined and the receiver instructed to look for activity on all
frequencies in predetermined step size in an upward or downward direction.
The mode and channel step will change automatically when set to the default
of AUTO-MODE but data may be specified specifically if preferred.
* It is important that you do not confuse SEARCH and SCAN modes. *
SEARCH mode automatically TUNES THE RECEIVER THROUGH ALL
FREQUENCIES between two specified frequency limits looking for active
frequencies. SCAN mode automatically recalls and monitored SPECIFIC
SPOT FREQUENCIES which have been stored into memory.
The great advantage of SEARCH over manual tuning is that it is so fast! There
are many different options available for SEARCH mode which will be explained
in this section.
The search instructions may be programmed into banks. There are a total of
20 programmable search banks so that data entry and recall is simple and
efficient.
Continuously active or busy frequencies such as amateur band repeaters may
be PASSED (skipped) and active frequencies stored to memory. There is even
an AUTO-STORE facility whereby active channels are automatically written to
memory bank "J".
When the receiver stops on a genuine active frequency during search, the
[ENT] key may be pressed to transfer the frequency to VFO where it may be
monitored for long periods of time or tuned. Pressing [ENT] for more than 1
second will initiate the process of storing the frequency into a memory
channel.
Limitations of SEARCH mode
SEARCH mode is extremely effective for AM & NFM use in the VHF and UHF
bands. Searching the shortwave bands is usually ineffective due to the
relatively high background and in-band noise especially when propagation
conditions are good and bands open.
Searching using the modes of USB, LSB and CW will produce mixed
results depending upon frequency band and whether any strong signals are
encountered which will affect the receiver's AGC (Automatic Gain Control)
circuitry.
Usually, short wave band and SSB monitoring is carried out with the squelch
control "open" (fully anticlockwise) and manual tuning by rotating the
[DIAL] - not by scanning or searching.