PRO-2004 Programmable Scanner
(200-0119) Operation - Part 2 Faxback Doc. # 31916
LIMIT SEARCH
To search for a transmission within a specific range of frequencies, press
[PROGRAM], enter the limits of the frequency range, and press [Up-arrow] or
[Down-arrow] to activate "search".
You can command up to 10 frequency ranges into a search bank.
Lower limit 25 MHz and Upper limit 1300 MHz are initially set in Search
Bank 1 - 10.
Press [PROGRAM].
Select a search Bank with numeric key 1 - 10 and press [LIMIT]. Enter 0
for search bank 10.
Example: To search in Bank 5 between 452.625 and 452.915
Press [5] [LIMIT].
Enter the lower limit of frequency range to be searched.
Press [4] [5] [2] [.] [6] [2] [5] [ENTER].
Press [LIMIT].
Enter the upper limit of frequency range to be searched.
Press [4] [5] [2] [.] [9] [7] [5] [ENTER].
Activate "search" by pressing [Up-arrow] or [Down-arrow]. [Down-arrow]
starts search from the highest frequency and goes down. [Up-arrow] moves
in the opposite direction.
NOTE: If search does not start after pressing [Up-arrow] or [Down-arrow],
try adjusting SQUELCH.
Press [Up-arrow].
Press [SPEED] to accelerate or to slow down the search.
NOTE: You can program LIMIT frequencies and STEP as you like, but SEARCH
may not necessarily work right under certain conditions.
Example: If you select a range of 100.005 and 100.045 using step
equal to 50 kHz
Set 100.005 MHz lower limit.
Set 100.045 MHz upper limit.
Note that when above frequency range and STEP of 50 kHz are set,
frequencies which correspond with the STEP are not usable. This is due to
the fact that the difference between the upper and lower limits selected is
LESS than the step frequency of 50 kHz.
In this situation, if you press [Up-arrow]:
Press [PROGRAM]->[LIMIT] to extend the LIMIT frequency range.
DIRECT Search
In MANUAL or PROGRAM operation mode, press [DIRECT] and then [Up-arrow] or
[Down-arrow] to search up or down from the displayed frequency.
Press [PROGRAM].
Press [DIRECT]. The step frequency is displayed.
Press [Up-arrow].
NOTE: When [DIRECT] is pressed during limit search, the PRO-2004 enters
DIRECT search. When a numeric key (1, 2...0) is pressed during a
DIRECT search, it goes to limit search through the search bank
corresponding with the numeric key.
FORCE SEARCH
Search - whether limit or direct - stops when a signal is picked up on a
frequency. When the frequency is not the one desired, press [Up-arrow] or
[Down-arrow] to continue the search.
Band Mode and Frequency Steps
Your PRO-2004 is designed to adjust itself for the band modes and
scanning/searching steps for each frequency range, as shown in the table
below.
|----------------------------------------------------------|
| FREQUENCY VS. MODE & STEP |
|---------------------Â---------Â--------------------------|
|Frequency (MHz) | MOD | Step (kHz) |
|---------------------|---------|--------------------------|
| 25.000~ 29.995 | AM | 5 |
| 30.000~ 87.495 | NFM | 5 |
| 87.500~ 107.995 | WFM | 50 |
| 108.000~ 135.995 | AM | 12.5 |
| 136.000~ 224.995 | NFM | 5 |
| 225.000~ 520.000 | NFM | 12.5 |
| 760.000~ 824.995 | NFM | 12.4 |
| 825.000~ 844.995 | NFM | 30 |
| 845.000~ 869.995 | NFM | 12.5 |
| 870.000~ 889.995 | NFM | 30 |
| 890.000~1300.000 | NFM | 12.5 |
|---------------------|---------|--------------------------|
WFM: Wideband FM for normal FM broadcast or TV sound.
NFM: Narrowband FM for action radio bands, police, fire, ambulance,
ham radio, etc.
AM: For aircraft band, CB, etc.
To see how it works, try searching the range of 85 - 110 MHz.
Press [PROGRAM] [1] [LIMIT] [8] [5] [ENTER]. The bottom line of the
display shows NFM mode and 5 kHz step, which is the assigned band/step for
85 MHz.
Press [LIMIT] [1] [1] [0] [ENTER]. The 110 MHz is AM aircraft band range,
so the bottom line changes to AM 12.5 kHz.
Press [Up-arrow] to start search and watch the bottom line - as you press
[Up-arrow] it changes to NFM 5 kHz. When the search reaches 87.5 MHz,
which is normal FM broadcast band, the bottom line changes to WFM and 50
kHz.
It further changes to AM 12.5 kHz when the search passes 108 MHz.
Normally, the preset mode/step works as indicated within each band.
However, for a part of the ham radio band, the aircraft band outside the
108 - 136 MHz and the TV audio, you will have to change the mode and/or
steps manually.
To do this, use the MODE and STEP switches. To change mode, press [MODE].
Each time you press it, the mode changes in the order of AM - NFM - WFM.
To change steps, press [STEP]. The step changes in sequence 5 kHz - 12.5
kHz - 50 kHz. Note that when you change the preset modes/steps, the
corresponding display flashes to show you that you changed the default
setting.
When you want to return to the default setting, press [RESET]. The display
stops flashing.
Keep in mind that the improper setting of the mode/steps can result in poor
reception. When you listen to an FM broadcast or TV sound in the NFM mode,
the sound will be much distorted. If you hear a police band in WFM mode,
the sound will be masked by noise. Or if you use 5 kHz or 12.5 kHz step to
search FM broadcast or TV sound, the search may stop on the sideband of a
frequency; press [Up-arrow] or [Down-arrow] to get the center frequency.
If you use 50 kHz step for NFM band, you may miss the in-between
frequencies of 50 kHz step.
Limit search break frequency memory
When limit search breaks in manual, program, scan, direct search, etc., the
break frequency is memorized, and resumes the limit search from that
frequency.
NOTE: When lower or upper limit of a limit search is changed, and if the
break frequency is within the limit frequency range, the search
starts from the break frequency. If the break frequency is out of
the new limit frequency range, the search starts from the lower or
upper limit frequency.
ZEROMATIC FUNCTION
Your PRO-2004 incorporates a Zeromatic circuit to receive correct
frequencies during search. However, if during search in the VHF/UHF TV
band, it accepts the side band frequency of TV sound; set the mode to WFM,
step to 50 kHz or press [Up-arrow] or [Down-arrow] to receive correct
frequencies.
The Zeromatic circuit may not work correctly when 5 kHz step search takes
place in the 760 MHz to 1300 MHz band.
USING DELAY
Search stops when a signal is picked up on a frequency. As soon as the
signal ends, searching resumes. Most transmissions are part of a two-way
communication. Delay allows for pause between transmissions.
Press [DELAY] when you wish to remain tuned to a frequency. Your PRO-2004
will hold the frequency at least 2 seconds after each transmission - giving
you time to listen to both sides of the transmission.
To cancel the delay function, press [DELAY] again.
Storing Frequencies in Monitor Channels
Your PRO-2004's Temporary Memory Storage Bank has 10 monitor channels.
During search, you can store one frequency into each channel.
1. To search for transmissions, press [PROGRAM]. The 10 numbers at the
top of the display now function as channels in which new frequencies
may be placed for temporary storage. Enter limits of frequency range,
and press [Up-arrow] or [Down-arrow] to activate 'search'.
2. When the search stops on a frequency you want, to store it press
[MONITOR]. This freezes search, and records the frequency in one of
the 10 monitor channels.
3. LCD displays (MONITOR "1" 2 3 4 5 6 7 8 9 10) Channel number to be
stored flickers.
4. Press [Up-arrow] or [Down-arrow] to resume searching. If you find
another frequency of interest, press [MONITOR] again to store it in the
monitor channels, 1 through 10. If you try to store frequencies in
more than 10 channels, the channel cycles back to 1 and you will write
the new frequency over the old one, and the old frequency will be
erased.
Moving Frequencies from Monitor Channels to Permanent-Memory-Storage Banks
You can move a frequency from a monitor channel to permanent storage by
simply pressing [ENTER]. There is no need to record each frequency and
re-enter it, one by one.
All that is necessary is to select the channel in which you wish to store
the newly-found frequency now in temporary storage. Then, recall the
monitored frequency to the display. Next, press [ENTER] to store the
frequency in permanent memory.
Example: To transfer 95.100 from temporary bank to Bank 9 permanently
1. Press [PROGRAM]. Press the channel number you want to use. Then press
[PROGRAM] again.
2. Press [MONITOR]. The display shows the monitor channels. The last
monitor channel entered and its frequency is displayed.
3. Press [MONITOR] as many times as required to arrive at the monitor
channel that contains the frequency you want moved to permanent
storage. Or, because you are now in the monitor mode, you may use the
keyboard to select the number of the monitor channel. You will see the
frequency you want moved on the display.
Press [2].
4. Press [ENTER]. This transfers and stores the frequency into the chosen
permanent-memory channel.
5. If you want to store more frequencies, select another memory channel by
keying in the number and [PROGRAM]. Then follow step 2 through 4
above.
The frequencies in the monitor channels will remain unchanged until you
wish to search for, and enter, new frequencies. When you wish to
verify the transfers, return to the permanent memory display by
pressing [MANUAL]. The display shows you have returned to the normal
mode. The word, BANK, appears at the top of the display. Press
channel number and [MANUAL] for checking the memory content of a
specific channel.
To store a frequency into the permanent-memory channel during Search Mode
1. Use MANUAL or PROGRAM to select an open channel or a channel which has
a frequency that you no longer want stored. For example, suppose you
select channel 260.
2. Pres [Up-arrow] or [Down-arrow] to start search.
3. When you arrive at the frequency you want to store, press [MONITOR].
The permanent memory channel will be displayed (channel 260).
4. Press [ENTER] and channel 260 stores 350.0125 MHz and automatically
starts search. Then, the permanent-memory channel advances by one
step.
5. To store another frequency into the permanent-memory channel, repeat
steps 3 and 4 e.g. Press [MONITOR][ENTER] and store 350.1625 MHz into
channel 261.
NOTE: By repeating MONITOR - ENTER you advance the permanent memory
channel and at the same time, you store the new frequencies. Any
previously stored frequencies are written over. So, to be sure
before you proceed, you should check and review the frequencies
already stored.
Sound Squelch
Even when the PRO-2004 stops at a frequency during either scan, search or
priority modes, sound squelch enables the operation to start again if the
frequency contains no sound, i.e. carrier only without modulated signal.
1. Press SOUND SQUELCH switch, the LED lights.
2. When the PRO-2004 stops at a frequency which has no sound, it remains
there for 0.5 seconds, and then goes to the next frequency if sound is
not detected within that time.
3. When a frequency which contains sound is received, it halts at the
frequency. But,
a. If the sound ceases during the reception, it stays on the frequency
for 5 seconds, and resumes scanning.
b. If the frequency stops sending a carrier, the unit reverts to scan
immediately if DELAY is off, after 2 seconds, if the DELAY is
active.
4. To cancel sound squelch, press SOUND SQUELCH switch again. The LED
goes off.
NOTE: If a frequency contains a transmission with low modulation, the
sound squelch circuit may not work properly.
DELETING FREQUENCY
To delete channel frequency display (zero display). Press [PROGRAM]
->[0]->[ENT]
Clearing Entire Memory
To clear all memories, press and hold [CLEAR]. Then press the RESTART
switch on rear panel, with power switch on.
(02/20/96)
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