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2025.08.12
Lab599 TRX Remote App is an Android application for remote control of TX-500 series transceivers via the CAT interface. The application enables real-time frequency adjustment using a virtual encoder, mode switching, and activation of key transceiver functions directly from the smartphone screen.

Main features
  • Frequency control with step selection
  • Band switching
  • Modulation mode switching
  • Output power adjustment
  • Quick access to essential functions: NR, NB, NF, DIF, PRE, CMR, ATT, MON, VOX
  • Filter switching
  • Status indicators

Requirements
  • Operating System: Android
  • Transceiver settings: Firmware version 1.26.06, Lab599 protocol
  • Compatible Models: TX-500MP, TX-500 DISCOVERY

Connection:
  • CAT-USB adapter AD-502 with USB Type-C adapter
  • CAT-Remote cable AD-514

Firmware

TX-500 DISCOVERY

2025.08.05
Changelog:

  • Added support for CAT control application
  • System menu reorganized
  • General fixes and improvements

Full changelog

Note:
Updates are cumulative (it is not necessary to follow the order of version updates).
To open the CB band (26065 - 29700 KHz) when upgrading from earlier firmware versions (v 1.12 and earlier) it is recommended to previously install the firmware version v1.13.08
2025.05.26
Changelog:

2024.12.06
Changelog:

  • Added support for the BP-550 Battery Pack
  • Adjusted the CW key speed
2023.03.20
Changelog:

  • Added: memory cells editing by the utility on the PC
  • Added: transceiver settings saving by the utility on the PC
2022.06.15
Changelog:
  • [BETA] Added CW decoder function
  • Extended 10-meter band for TX with taking into account the CB range: from 26065 to 29700KHz
  • Added quick mode selection by long pressing the MODE button
  • Improved VFO/MEM function: fast switching by TUNE/MULTY between stored VFO values
  • Added ability to assign alternative functions to RIT/XIT encoder
  • Improved LOCK function in Memory mode

TX-500MP

2025.11.18
This update limits the transmission frequency range of the TX-500MP transceiver in accordance with the recommended amateur radio band plan. It is intended to ensure compliance with the operational requirements for amateur radio equipment.

CAUTION: The changes introduced by this update are irreversible. Subsequent software updates will not override these restrictions. If you need to extend the transmit range, please contact an authorized service center.
2025.08.05
  • Added support for CAT control application
  • General fixes and improvements

Full changelog
2025.05.27
  • Added transmit frequency shift function:

      - The shift frequency (+/-) is set in the "37 SHIFT TX" item of the main menu
      - The function is activated via the “ShTX” item in the quick access menu
      - When the function is active, a shift indicator “>” or “<” is displayed on the screen

  • ASQ algorithm adjusted – reduced dependency on filter bandwidth
  • Expanded set of CAT protocol commands implemented (Lab599 protocol)
  • System optimization — reduced boot time
2025.04.15
  • Скорректирован алгоритм ASQ

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Documentation

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