Everything you wanted to know about Icom radios. And more.
F1721 / F2721 / F1821 / F2821
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Tips and Tricks
| My radio locked up during a firmware update (power failed, cable broke, etc.) Now what?? |
| Open the firmware update tool again and attempt to update the radio again. The radio is very good at recovering from partial updates, even if the display is off and the radio looks bricked. |
| How do I add or delete channels from the Tactical Zone? |
Navigate to the channel you want to add to the Tactical Zone, then turn off the radio. Hold down the P1 and P3 buttons while turning the radio on, and you should see "COPY?" on the display. Press P0 to add the channel.
Navigate to the Tactical Zone and turn to the channel you want to remove, then turn off the radio. Hold down the P1 and P3 buttons while turning the radio on, and you should see "DELETE?" on the display. Press P0 to remove the channel.
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| My display flashes, what does that mean? |
When the display text flashes, that means the radio's PLL is unlocked and may be caused by several common problems:
- If the display flashes without keying up the radio, the RX frequency you entered is outside the frequency range of the radio
- If the display only flashes when keying up the radio, the TX frequency entered is outside the frequency range of the radio
- Somebody messed up the adjustment values with Adjustment Software
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