Introduction Thank you for purchasing the AR7000 wide band all mode receiver. The AR7000 is designed using DSP (Digital Signal Processing) technology to ensure the highest levels of performance and reliability. To get the best possible results from your AR7000 we recommended that you read this manual and familiarise yourself with the receiver.
4 Index 1 Introduction .................................………. 1 2 Supplied Accessories .........................…. 1 3 For your safety ...............................…….. 1 4 Index ........................................…………. 3 5 Major features ...............................……… 6 6 Care & maintenance ...........................… 8 6.1 Power supply ................................……. 8 6.2 Installation ................................……….. 8 6.3 Colour LCD ..................................……... 8 6.
2.6 Transfer data from dial to memory....... 29 3 Memory mode....................................…… 30 3.1 Display....................................………. 30 3.2 Memory channel.............................… 30 3.3 Memory bank................................…... 30 3.4 Transfer data from memory to dial..... 30 3.5 Memory data edit...........................…. 31 4 Search and Scan mode............................ 38 4.1 Type of scan/search and definitions.... 38 4.2 Display and Run/Brk........................
6 Care and maintenance Look after your AR7000 and you should enjoy many years of monitoring. There are no internal operator adjustments. In the unlikely event of servicing being required, please contact your dealer for technical assistance. 6.1 Power supply The AR7000 is designed for operation from its supplied a.c.-to-d.c. adapter. Operation is possible from a d.c. supply of 12 to 14V, which should be able to supply up to 2.0A The d.c.
7.1 Front Panel {figure 1} 7.1.1 Power Switch Press this switch to power the radio on/off. In addition the separate infrared remote controller (supplied) will enable the AR7000 to be switched off. Note: The AR7000 may be switched off and on via the infrared remote only if the AR7000 mechanical front panel switch remains depressed. 7.1.2 Headphone Socket A 3.5mm headphone jack plug can be connected for personal monitoring.
{figure 2} 7.2.1 AUX connector This 8-pin 270º DIN socket provides output for audio, squelch switching, etc. Refer to section 10 of this manual for pin-out details. 7.2.2 Video output switch This slide switch selects the video format of either PAL or NTSC. The default position is NTSC. Note: When PAL is selected the built-in LCD is disabled. 7.2.3 Video output terminal This PHONO socket provides a composite video output to the external monitor in either NTSC or PAL depending upon selection. 7.2.
This 3.5mm jack socket is provided for connection to an external speaker (8 OHMS). Audio level is variable via the volume control. When an external speaker is used, the built-in speaker will be disabled. 8 Before the set is switched on 8.1 Power supply Ensure the power switch is in OFF position (switch protruding). Connect the d.c. plug of the standard power supply to the power input socket which is found on the rear panel of the AR7000. 8.
Main dial is used to tune through the receive frequency. Also used to select receive mode, squelch level, IF BW and AGC. [ENT] Determine the selection of data/functions (used to finalise selection). [STEP 1] PUSH (tap) with a finger (only momentarily) to enter the numeric data which is printed directly on the key in orange (primary function). PRESS (longer than one second) to select the function which is printed above the key in white. Operating the AR7000 is simple if you follow the basic principles:1.
Press the [SQL] key. The SQ legend on the LCD will reverse to negative image. Push the [SQL] key again to toggle “OPN” (open) and “S0 ~ S9, +10, +20 ~ +60” (close). When a range between S0 & +60 is displayed, rotate the main dial to change the squelch threshold value. If you want the squelch open press the [ENT] key while the “OPN” legend is displayed. In order to obtain an optimum squelch threshold level, press the [SQL] key, the “SQ” legend on the LCD will reverse to a negative image.
Push [0] [.] [9] [5] [4] [ENT] From there rotate the main dial to tune around the medium wave band radio stations. {figure 13} B Memory mode The AR7000 is equipped with a total of 1500 memory channels (100 ch x 15 banks). Each memory channel can be given an alpha-numeric ident of up to 7 letters for ease of identification, the ident is displayed to the upper left of the frequency (under the legend “MEMORY”).
graphically show such radio activities while the search is in progress (rather like an aeroplane vapour trail). It is possible to tune the radio by tracing a cursor onto the frequency you want to monitor (using the main dial). There are two types of search, Manual search and Program search. C-1 Manual search When the AR7000 is in the “DIAL” mode (either VFO-A or VFO-B on the upper line of the large frequency readout) the manual search can be used. 1.
3. Push the [RUN/BRK] key to start the program search process, the LCD displays the legends “P.SEARCH” (in light blue) and “Run” (in red) to confirm selection. {figure 19} Remember, the squelch must be advanced high enough to cancel the background noise or the search process will not progress as the AR7000 will think that it has found a busy frequency. Press [SQL] and rotate the main dial clockwise until background noise in cancelled then press [ENT] to accept the new value.
Remember, the squelch must be advanced high enough to cancel the background noise or the scan process will not progress as the AR7000 will think that it has found a busy channel. Press [SQL] and rotate the main dial clockwise until background noise in cancelled then press [ENT] to accept the new value. Resultant frequency spectrum analysis (representing channel activity) will be displayed on the lower section of the LCD (in green) as the scan process advances.
4. Push the [RUN/BRK] key while scanning to pause the scan process. The scan will stop and the legend “Brk” will be displayed on the LCD. Rotate the main dial to step through the memory channels, a cursor (vertical dark band through the spectrum display) follows your movement through the limits of the display window. {figure 26} 5. Push the [ENT] or [ESC] key to return to the program scan menu to make changes or to select a different scan group. 6.
{figure 32} To adjust the squelch threshold level Press the [SQL] key to toggle “OPN” and “S-meter value”. While S-meter value is indicated, rotate the main dial or push the [→] or [←] keys to vary the squelch Smeter value. Push the [ENT] key when you have selected the desired value. {figure 33} The squelch value is indicated as a blue line displayed underneath the S-meter. Note: The scan/search will only begin when the background signal (noise) is below squelch threshold. 1.
away from adjacent channel interference, especially on the short wave and medium wave bands. {figure 36} Operating the IF Shift Press the [IF SFT] key, the IF SHIFT legend will reverse to a negative image to confirm selection. Each press of the [IF SFT] key will toggle the status between current value and OFF. Either rotate the main dial or press the [→] or [←] keys to vary the IF shift frequency as required. Press the [ENT] key when the optimum IF Shift frequency is obtained.
i.e. for 25 kHz type [2] [5] [ENT]. Acceptable step size is anything between 0.01 kHz (10 Hz) and 1000 kHz (1 MHz). The back space key [←] will act as delete key if a mistake is made. When AUTO MODE is selected, the step size is selected automatically by the AR7000 CPU appropriate to the market area, this is taken from a detailed bandplan entered into the AR7000 during manufacture. {figure 40} 2.
Receive Mode USB/LSB CW1,CW2,CW3 AM WFM NFM * Selection of IF BW 2kHz, 2.5kHz, 3kHz 50Hz,150Hz,250Hz,500Hz,800Hz 3kHz,6kHz,8kHz 150kHz 15kHz-H, 15kHz-L * NFM mode operates with a fixed 15kHz IF bandwidth but with the selectable option of wide audio frequency response (15kH) and narrow response (15kL). The wider the filter, the better the audio fidelity… there is an increased chance of adjacent channel interference with a wider IF bandwidth. The best setting will depend upon listening conditions.
{figure 45} 3.2 Memory channel In the memory channel mode, either rotate the main dial to select the memory channel or use the [←] [→] keys. Memory channels with no valid data will be ignored (skipped = not shown). 3.3 Memory bank In the memory mode, press the [BANK] key. The LCD bank legend will reverse to a negative image. Either rotate the main dial or use the [←] [→] keys to select the memory bank. Press [ENT] when the desired bank number is displayed. {figure 46} 3.
Press the [EDIT] key to select the memory function menu. While the “>” cursor is along side the menu item “Ch Edit/Del”, press the [ENT] key. The memory edit menu will be displayed, a quick press of the [←] or [→] keys will highlight the CHANNEL (00 to 99) and BANK numbers (00 to 14) as a toggle by displaying a negative image over the required selection (do not hold the arrow keys too long, just a quick press is required).
{figure 54} The Name Edit screen will be displayed. Your desired text ident may now be entered or edited. Use the [↑] and [↓] keys to select character line number, use the main dial to move along each line, use the [←] and [→] keys to move along the seven character text ident, use the [ENT] key to accept the input for each character. Other options include Insert, Delete, Space and Quit. Refer to section 7 of this manual for further details.
{figure 60} B Selection of distant memory (destination) Press the [ENT] key when the cursor “>” is next to the “Dist”. The channel number of the distant memory will reverse to a negative image. Press the [←] or [→] keys to toggle between channel number and bank number. Rotate the main dial to select the desired memory channel and bank number for the distant memory channel. Press [ENT].
B Selection of distant memory channel Press the [ENT] key when the cursor “>” is next to “Dist”. The channel number of the distant memory will reverse to a negative image. Press the [←] or [→] keys to toggle between channel number and bank number. Rotate the main dial to select the desired memory channel and bank number for the distant memory channel.
between channel number and bank number. Rotate the main dial to select the desired memory channel and bank number for the distant memory channel. Press [ENT] {figure 73} C Executing the swap Now that both source memory and distant memory channel have been selected, press the [↑] and [↓] keys to move the cursor “>” next to the legend “Swap” then press [ENT]. The memory contents of each channel are now swapped.
Search: The AR7000 steps through the frequency spectrum looking for transmissions, the squelch control needs careful setting so that the background noise is just cancelled, if the squelch is set too high, weak signals may be missed. The AR7000 steps through the spectrum using the selected mode and step size (including automatic selection using the automode bandplan data programmed into the AR7000 CPU). Unwanted active frequencies may be skipped using the PASS facility.
The squelch threshold is shown as a light blue horizontal line, when temporarily stopped, a vertical dark cursor bar indicates current receive frequency. The larger the signal received, the higher the green bars of spectrum analysis, however, there is no way of showing real time signal strength on the spectrum display (refer to the smeter in the top left corner of the LCD for current signal strength). 4.3 Manual search 4.3.
The manual scan process will stop as soon as an active signal above squelch threshold is received. The scan will resume when such signal has disappeared. You can force the scan to resume even if the signal is present by rotating the main dial. The scan direction depends on the direction which the main dial is rotated or direction of the [←] [→] keys. If only a small number of memory channels have been selected (less than 80), the spectrum analysis trace may only occupy part of the LCD width.
{figure 85} When an active signal has been found the program search will stop. The search will resume when the active signal has disappeared and squelch closes, or in case of time controlled search, when a pre-determined time has elapsed. Rotate the main dial or use the [←] [→] keys to force the search to resume, you cannot reverse the direction of program search as it is defined in the programming menu. 4.5.
key to accept the input for each character. Other options include Insert, Delete, Space and Quit. Refer to section 7 of this manual for further details. {figure 87} C Stop time Push the [ENT] key when the cursor is placed alongside the item “Stop Time”. {figure 88} Rotate the main dial or push the [←] [→] keys to select the desired stop time in seconds followed by [ENT].
Note: When inputting start and stop frequencies, the AR7000 automatically assigns the lower frequency to the START and upper frequency to the STOP regardless of which order then are entered. F End frequency Push the [ENT] key when the cursor is placed alongside the item “Stop”. Enter the desired stop frequency followed by [ENT]. {figure 91} G Step Push the [ENT] key when the cursor is placed alongside the item “Step”. {figure 92} Enter the desired step size via the keypad in a kHz order followed by [ENT].
O N: When active signals above the squelch threshold have been received, such signals will be automatically stored in the empty channels of the designated memory bank. When the memory bank becomes full, the auto store action will become invalid, the search process will carry on regardless. OVW: When active signals above squelch threshold have been received, such signals will be stored from channel 00 up to channel 99 of the designated memory bank in sequence.
Having selected the desired program scan number, push the [RUN/BRK] key to start the program scan. {figure 99} The scan process will temporarily stop when an active signal above the squelch threshold has been received. The scan process will resume when such signal has disappeared. In the case of time control scan, the scan process will resume as soon as the pre-determined stop time has elapsed or when the squelch closes should this occur first (transmission ends).
C Stop time Push the [ENT] key when the cursor is placed alongside the item “Stop Time”. Rotate the main dial or push the [←] [→] keys to select the desired stop time in seconds followed by [ENT]. {figure 102} SQ: The program scan will stop as long as the received signal stays above the squelch threshold, scan will resume once the signal drops below squelch threshold and the squelch closes.
{figure 105} G Quit Push the [ENT] key when the cursor is placed alongside the item “Quit”. The LCD will revert to whatever mode was active before the program scan menu was selected. 5 Search pass/bank The AR7000 has a PASS facility which enables unwanted busy frequencies to be skipped during the scan and search processes. 5.1 Common pass bank Memory bank number 14 has been assigned the special status of PASS BANK.
6.2 Time The AR7000 is equipped with one main clock plus four sub-clocks. Push the [ENT] key when the cursor is placed alongside the item “Clock Setup”. Items relating to the MAIN clock are prefixed “M” and the SUB-clock are prefixed “S”. {figure109} {figure 110} 6.2.1 Main clock adjustment When setting the MAIN clock, it doesn’t matter which sub-clock number (“Clock No.”) is displayed (1 to 4). A Date Place the cursor alongside “M. Date” then press [ENT].
A-1 Time difference Place the cursor alongside “S. Diff”, press [ENT]. The time difference will be reverse highlighted on the LCD, rotate the main dial to set the correct time difference (in hours between -24 and 24 hours, 0 being the current time zone of the main clock), followed by [ENT]. The local time and date is calculated by the AR7000 and displayed in green in the lower half of the LCD. {figure 117} A-2 Name Place the cursor alongside “S.Name” press [ENT].
{figure 122} 6.3.4 Operation of timer Place the cursor alongside “Operation”, press [ENT]. The field initially displays “- - -“. Rotate the main dial to alternate between “POWON” and “POWOFF”. Push the [ENT] key to complete the sequence. {figure 123} A Setting the timer for switch-on 1. In the timer selection menu place the cursor alongside “Date” followed by [ENT]. Rotate the main dial to select the date required for switch on followed by [ENT].
2. In the timer selection menu, select the hour/minute the AR7000 is to be switched off. 3. Select the “Operation” item and choose “POWOFF” followed by [ENT]. 4. The AR7000 will remain active until the preset date and time has arrived then will automatically switch off. There is no need to move the cursor to the “power Off” item, simply carry on using the AR7000 as usual. 5.
are involved. The more erratic the transmission, the longer the squelch tails should be. {figure 131} 6.6 Priority Any one of 1500 memory channels can be designated as priority channel. 6.6.1 Priority time In the “Configuration” menu screen, place the cursor alongside “PrioTime” followed by [ENT]. Rotate the main dial or push the [←] [→] keys to select the desired value followed by [ENT]. Priority time is selectable between 1 second and 60 seconds in increments of 1 second.
2. Input cursor The cursor indicates the position where input will be made. 3. Select cursor The select cursor indicates a selection of letter/number you want to input. 4. Command Place the cursor over these commands followed by ENT to execute the following:Ins: Del: Spc: Quit: Insert selected character Delete this character Space (add a blank space) Quit (exit this menu) 7.
8.1 Video output PAL and NTSC composite output is switchable via the rear panel video switch. When PAL format is selected the built-in LCD display will be inoperative. Video output is available via the rear panel video PHONO socket. 8.2 Audio output Constant audio output is available via this PHONO socket, a load impedance of 10k OHMS is assumed for constant level output. 9 RS232C The AR7000 can be operated remotely by a personal computer via the RS232C socket.
check the condition of the batteries regularly to avoid damage due to leakage from exhausted batteries. 12 Reference data 12.1 Specification Frequency range 100kHz - 2000MHz Receive mode FM (W), FM (N), AM, CW, USB, LSB Receiver circuitry Triple superheterodyne & digital conversion IF frequency 1st=275.4MHz,782.28MHz, 2nd=45MHz, 3rd=10.7MHz Step size 10Hz - 1MHz in a 10Hz increment Sensitivity (uV) typical Range 100kHz - 700kHz 700kHz - 20MHz 20MHz - 1200MHz 1200MHz - 2000MHz AM 4.2 3.5 1.3 4.
0.1A (switched off) Memory Memory channel Program search Program scan Program timer Clock 1500ch (15 bank x 100ch) 8 8 5 5 Scan/search rate 20ch/sec. In/output Aerial connector Video output Audio output External speaker Headphones AUX Rec output Mute +12V out RS232C port Remote controller 50 OHM BNC 75 ohm PAL/NTSC composite (PHONO) 10 k ohm demodulated output 8 OHMS 3.5mm jack 32 OHMS (nominal) 3.
Providing the AR7000 is powered, ensure the rear panel PAL/NTSC slide switch is set to NTSC otherwise the internal display will be disabled. 3. Inoperative keys Ensure that the “Lock” legend is not displayed in the lower-left corner of the LCD, if it is, press the [K.Lock] for more than one second to toggle key lock off / on. The primary function of keys requires a very short press (tap), if you hold them too long you may activate the second function or the keys may appear to be inoperative.
Table-top active short wave loop aerial. Supplied with two elements as standard covering from 1.6MHz to 5.0MHz and 5.0MHz to 15MHz. Operates from internal 9V battery. Supplied with BNC to BNC coaxial patch lead. LA320M Low frequency optional element for the LA320 active loop aerial system. Frequency coverage is 200kHz to 540kHz. LA320M Medium frequency optional element for the LA320 active loop aerial system. Frequency coverage is 540kHz to 1.6MHz. ABF125 Airband filter for the VHF band 108 to 136 MHz.
