Reply To: Monitor Two Frequences at Once

  • Jim

    Group organizer
    2024-12-15 at 16:43
    205
    50W posting rank

    Hi Lind.

    Sorry for the lengthy reply, but it’s a really good question and many hams aren’t familiar with the concept.

    The feature you are referring to is commonly called “dual watch”, “dual receive”, or “priority scan”, depending on the specific implementation and the manufacturer’s terminology. Here is a breakdown of these terms:

    Dual Watch: The radio monitors one primary frequency while intermittently checking another frequency for activity. When a signal is detected on the secondary frequency, the radio alerts the user or switches to it.

    Dual Receive: The radio can simultaneously monitor and receive on two different frequencies, often on the same or different bands. This is a more advanced feature and usually requires dual VFOs (Variable Frequency Oscillators).

    Priority Scan: The radio scans a list of frequencies but gives priority to a designated “priority channel,” checking it more frequently for activity.


    Radios with Dual Watch/Dual Receive

    Here is a list of a few of the handheld and mobile rigs, I’ve also included a couple of base stations, that support dual watch or dual receive:

    Handheld Radios (HTs)

    1. Yaesu FT-5DR

    • Dual-band (VHF/UHF) with dual receive capability. Monitors two frequencies simultaneously, including digital (C4FM) and analog.

    2. Icom ID-52A

    • Dual-band D-STAR digital and analog with dual receive. Simultaneous reception on two VHF/UHF frequencies.

    3. Kenwood TH-D74A

    • Dual-band with D-STAR support and dual receive. Supports simultaneous APRS tracking and voice monitoring.

    4. Anytone AT-D878UVII Plus

    • Dual-band DMR/analog with dual watch capability. Monitors two frequencies or time slots.

    Mobile Radios

    1. Yaesu FTM-300DR

    • Dual-band with dual receive for analog and C4FM. Monitors two frequencies independently.

    2. Icom IC-2730A (I have this one and love it. Not expensive and works great).

    • Dual-band analog FM with true dual receive. Allows full independent control of both bands.

    3. Kenwood TM-V71A

    • Dual-band analog with dual receive. Cross-band repeat capability.

    4. Anytone AT-578UVIII Pro

    • Dual-band DMR/analog with dual receive. Monitors two frequencies or digital time slots.

    Base Radios

    1. Yaesu FTM-500DR

    • Dual-band base/mobile with true dual receive. Supports monitoring VHF/UHF simultaneously.

    2. Icom IC-9700

    • Tri-band base radio (VHF/UHF/1.2 GHz) with dual receive. Designed for satellite and terrestrial operation.

    3. Kenwood TS-2000

    • Multi-band base radio with dual receive, including VHF/UHF. Capable of satellite and cross-band operation.

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