Icom IC-2820H Instructions de montage
Prince William County ARES
IC-2820 Quick Reference Guide v.1.4
Icom IC-2820H Basic Operations
These instructions are not a substitute for reading the manual
NOTE: The IC-2820 is a dual receive radio with a left and right side and set of keys and
knobs. The active side is identified by a MAIN icon in the top “left” corner of the ac-
tive display. When the instructions refer to MAIN key or knob, they refer to the active
transceiver side and do not affect the inactive side until the inactive side is made active.
To select the MAIN band, either press the DIAL knob on the side you wish to set ac-
tive.
The IC-2820 has a magnetic attached face plate. The connector cable may not be attached to the radio initially (use the short one, not
the long extender cable). Note that the six-pin end goes into the main unit and the four-pin end goes into the face plate. The micro-
phone should already be attached and covered by a faceplate.
IC-2820 Front Panel: 1) Power, 2) Function/Lock key 3) Output Power/Priority, 4) Tone/DTMF, 5) Duplex/Monitor, (Button 2-5 are for
the MAIN band only), 6) SQL, 7) VOL, 8) DIAL, 9) MAIN band (push), 10) VFO/Tune/Scan, 11) Memory/Call/Memory write.
IC-2820 LCD Panel: Of note: 1) Operating mode indicator, 2) Duplex indica-
tors, 3) Name indicator if programmed, 4) Tone indicator, 5/6) Not relevant
without D-Star board, 10) Lock function enabled, 17) Weather indicators if
programmed, 19) Power level, 22) MAIN band indicator IC-2820 Main body: 1) Controller connector (6-
pin), 2) & 3) Not used, 4) Packet data jack, 5)
Mic, 6) Antenna (primary), 8) Antenna
(optional), 9) External speaker, 10) External
speaker—see External speakers.
Prince William County ARES
IC-2820 Quick Reference Guide v.1.4
Memory
Channel
Memory Name/Purpose Frequency Tone
1 OVH2M/Operations and Logistics 146.970 - 100 Hz
2 WWI2M/Operations and Logistics 147.240 +
3 NVFM2M/Fairfax ARES 146.790 -
4 NVREGN/Northern Virginia Regional Operations and
Coordination
146.910 -
5 SKYWARN/National Weather Service—Sterling 147.300 +
6 MDREGN/Maryland Regional Operation and Coordination 147.105 +
7 MTVERN/Mount Vernon (Alexandria) 146.655 - 141.3 Hz
8 ALEX2M/Alexandria ARES 147.315 +
9 ARL2M/Arlington ARES 145.470 -
10 FAQ2M/Fauquier ARES 147.470 + 167.9 Hz
11 LOU2M/Loudon ARES 145.310 -
12 DULLES/Dulles Airport 2m machine, max 15w out 147.330 + 203.5 Hz
21 OVH440/Command and Control/Operations and Logistics 442.200 +
22 WWI440/Command and Control/Operations and Logistics 444.900 +
23 FALLSC/Fall Church ARES 442.425 - 91.5 Hz
25 NERA/DC 449.975 - 107.2 Hz
26 KT4ER/Bull Run Mountain 448.325 - 100.0 Hz
33 MEDCOM/InterHospital communications/MedComm back-
up
146.445
34 ARC-CHP/Red Cross Chapter-to-Chapter communications 146.535
35 ARC-FLD/Red Cross Field Operations 146.420
36 XBAND1/Combine with 147.525—VHF1 (left) 445.950 (right) 100.0 Hz
37 XBAND2/Combine with 146.475—VHF2 (left) 446.050 (right) 100.0 Hz
38 XBAND3/Combine with 146.970—OVH2M (left) 445.975 (right) 100.0 Hz
39 XBAND4/Combine with 147.240—WWI2M (left) 446.025 (right) 100.0 Hz
40 Packet 145.730
41 APRS 144.390
24 NERA/Main Repeater, linked system 442.725 + 107.2 Hz
27 NERA/Bull Run Mountain 447.775 - 67.0 Hz
Preprogrammed Memory Channels and Frequencies
IC-2820
Prince William County ARES
IC-2820 Quick Reference Guide v.1.4
Band Management Selecting the Operating Band (Pg. X)
Transmission is possible on the side where the MAIN icon is lit.
To select the left or right side for transmission:
Mic: Press the BAND button
Face: Briefly press the MAIN-BAND knob on either the left or the right side as
needed.
Selecting the Frequency Band (Pg. XI)
Press and hold the DIAL knob for 1 second, then rotate the DIAL to step through the
bands.
Direct input with Mic (Pg. XI)
Push the VFO/LOCK button, push the T-OFF/ENT C button, push the number
buttons for the frequency.
Power Turning the power on and off (Pg. 15)
To turn the radio on, press and hold the
[PWR]
button
For 1 second (Fig. 1). The LCD will show the
current power supply voltage for 2 seconds before
switching to normal mode.
To turn the radio off, press and hold the
[PWR]
button
for 1 seconds.
Changing the Transmit Power Level (Pg. 23)
Press the [LOW-PRIO] to change the power output levels. Low is 5W, Mid is 15W,
High is 50W on 2M and 35W on 70cm.
Figure 1
Locking the Radio Locking the radio (Pg. 19)
Press the FUNCTION-LOCK key for 1 second to lock or unlock the frequency.
Memory Mode Memory Mode Operations (Pg. 61)
The IC-2820 deployed at the EOC and Potomac Hospital have been preloaded with the
frequencies listed in this guide. To ENTER memory mode:
1. Press M/CALL-MW button once. The MR icon appears on the active frequency.
You will need to do this for each active frequency once.
2. Turn the DIAL until the desired memory bank is displayed.
3. To enable the name function:
A. Push the FUNCTION key
B. Push the LOW-PRIO button once
C. Push the FUNCTION key twice to return to normal operations
Prince William County ARES
IC-2820 Quick Reference Guide v.1.4
CTCSS CTCSS Operations
Enabling CTCSS involves two steps. You have to set the Tone Frequency (Pg. 32) and
enable the Tone mode (Pg. 30).
Setting the Tone Frequency (Pg. 32)
1. Push the FUNCTION key to display the function guide.
2. Push the MENU (V/MHZ-SCAN) key (Far right).
3. Rotate DIAL to select DUP/TONE, then push MAIN-BAND.
4. Rotate DIAL to select REPEATER TONE then push MAIN-BAND.
5. Rotate DIAL to select the tone you want, and then push MAIN-BAND to set.
6. Push BACK (V/MHZ-SCAN) (far right) twice to exit and return to normal op-
erations
Enabling Tone Mode (Pg. 30)
1. Push TONE-DTMF to enable TONE. It rotates through TONE, T.SQL, and dis-
abled.
Repeater Offsets Setting Repeater Offsets (Pg. 30)
The IC-2820 comes preset with the following shifts: On 2m, 600 kHz; on 70cm, 5 MHz
To manually set the positive (+) or negative (-) or disable the offset, push the DUP-
MONI button to change between off, DUP-, and DUP+
This works ONLY for the active frequency.
Cross Band
Repeater
Operations
Enabling the cross band function (Icom KB 743G461664)
1. Configure the band(s) as needed with power levels and TONE as needed.
2. Press and hold both left and right MAIN dials then the FUNCTION key to-
gether. After two beeps, the lock key will flash in the upper right of the display.
3. When in cross band mode, the VHF frequency is on the left and the UHF fre-
quency is on the right.
4. Repeat step 2 to return to normal operations.
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