Icom Ui-7 Am Fm Unit [extra Quality] May 2026

Here’s a forum-style post you can use or adapt for a discussion board, Facebook group, or Reddit (e.g., r/amateurradio).

AM Support: Enables AM transmission (standard radios usually only received AM without it). FM Support: Provides both FM transmission and reception. Compatibility and Rarity icom ui-7 am fm unit

Performance Review

AM Broadcast (0.5–1.7 MHz)

• Sensitivity: Very good for a transceiver add-on. On a 1m whip antenna (stock IC-705), you’ll hear strong local stations clearly. With a proper external AM loop or long wire, sensitivity matches dedicated portables like a Tecsun PL-330.
• Selectivity: Fixed, around ±6 kHz. This is fine for strong signals, but adjacent-channel rejection (e.g., 10 kHz spacing) is poor compared to a dedicated DX radio. You will hear bleed-over from nearby strong stations.
• Audio quality: Restored to built-in speaker or headphones. It’s clean but not Hi-Fi – about 3–5 kHz bandwidth, typical of an amateur radio’s audio path. Not for critical music listening.

When installed, it changes the receiver system to a triple conversion superheterodyne for FM mode (adding a 3rd IF of 455 kHz). RigPix Database Compatible Icom Radios The UI-7 is primarily intended for the following models: The most common application for this board. A standard optional plug-in for this model. IC-721 / IC-721M / IC-721S: Compatible Japanese-market equivalents. Note on IC-729: This unit is not required Here’s a forum-style post you can use or

It connects to the main unit via a 10-pin plug and two 3-pin plugs. Sensitivity: Very good for a transceiver add-on

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