What to do if only 1 memory channel is programmed on Icom IC-2720H Transceiver?
If only 1 memory channel is programmed or other channels are set as skip channels on your Icom Transceiver, program other memory channels or cancel the memory skip function in the desired channels.
What to do if the Icom Transceiver power connector has a poor contact?
If the power connector has a poor contact, check the connector pins. Also, re-connect the power cable, making sure to observe the correct polarity. If the fuse is damaged, replace it. Finally, check the cause of the damage, and then replace the fuse.
What to do if my Icom IC-2720H has the squelch open?
If the squelch is open on your Icom Transceiver, set the squelch to the threshold point.
What to do if the other station is using tone squelch on Icom IC-2720H?
If the other station is using tone squelch, turn the tone squelch function ON and set your transceiver to simplex.
What to do if Icom Transceiver priority watch is activated?
If priority watch is activated on your Icom Transceiver, cancel the watch.
What to do if the frequency lock function is activated on Icom IC-2720H Transceiver?
If the frequency lock function is activated on your Icom Transceiver, turn the function OFF.
What to do if Icom Transceiver priority watch is paused?
If the priority watch is paused on the watching frequency of your Icom Transceiver, push [LOW•PRIO] for 1 second to cancel the watch.
What to do if the time-out timer is activated on Icom Transceiver?
If the time-out timer is activated on your Icom Transceiver, set the timer to OFF.
What to do if One-touch PTT function is activated on Icom Transceiver?
If the One-touch PTT function is activated on your Icom Transceiver, turn the function OFF.
General| Brand | Icom |
|---|---|
| Model | IC-2720H |
| Category | Transceiver |
| Language | English |
General specifications including frequency range, mode, power requirements, and dimensions.
Transmitter output power, modulation system, frequency deviation, and connectors.
Receiver system, IF, sensitivity, selectivity, and audio output.
Step-by-step guide to safely disassemble and remove the main unit from the transceiver.
Instructions for disassembling and removing the control unit, including knob and cover removal.
Overview of receiver circuits, including triplexer and band switching for different frequency bands.
Detailed description of RF signal paths for the left side display receiver.
Description of the 1st mixer and 1st IF circuits for the left side display receiver.
Description of 2nd IF and demodulator circuits for the left side display, including FM and AM modes.
Description of the AF amplifier circuit that drives the speaker for the left side display.
Description of the noise squelch circuit for the left side display, controlling AF signal muting.
Description of drive and power amplifier circuits, including power output details.
Description of the Automatic Power Control circuit for output power stabilization and protection.
Overview of power supply circuits for different units.
Block diagram illustrating the functional interconnections of the transceiver's main units.
Voltage diagram for the control unit, showing voltage distribution to components.
Voltage diagrams for the main unit and VCO unit, illustrating voltage distribution.
To Next Page
