Retevis RT98 Manual Programming Guide

Size meets performance with the ultra-compact Retevis RT98 mini mobile VHF transceiver. Delivering up to 15W of crisp RF output power across the 144–148MHz amateur band, this rugged radio features a high-stability double-conversion superheterodyne receiver and a clear backlit interface. This complete guide walks you through essential front-panel layout navigation, manual memory bank storage, squelch configuration, and custom tracking setups.

📐 Small Footprint, Big Performance: Technical Profile

Do not let its miniature size fool you. The Retevis RT98 is built with a highly selective double-conversion superheterodyne receiver architecture. This physical circuit structure minimizes interference from adjacent channel signals, making it exceptionally reliable for vehicle dashboards and mobile field deployment.

Core Hardware Features:

• Selectable Power Levels: Run your rig efficiently with three power output levels up to 15W High, 10W Medium, or 5W Low.
• Robust Channel Memory: Features 199 fully programmable memory channel blocks with text name editing capabilities.
• Flexible Squelch Infrastructure: Built-in carrier, CTCSS (51 groups), and DCS (1024 groups) signaling filters.
• Highly Scannable Mechanics: Complete support for frequency VFO sweeps, channel memory scans, and tone search logging.

🕹️ Front Panel Interface Navigation & Key Combinations

Operating the RT98 effectively depends on understanding its secondary key function layers. The main buttons change tracking roles based on whether the primary function command is engaged:

• VFO / Memory Toggle: Press the [V/M] button briefly to switch between manual Frequency Mode (VFO) and pre-saved Channel Mode. An M or channel digit displays on the far left when in channel mode.
• Squelch adjustment: Press the [SQL] button to break open your squelch threshold to listen for weak incoming signals. To set the squelch level, hold down the [SQL] button while adjusting the main [VOL] dial knob.
• Accessing the Main Settings Menu: Press and hold the [FUN] key for more than 2 seconds. Use the microphone UP/DN keys or turn the VOL knob to browse items. Press the VOL knob to select a menu parameter, change its variable, and press it again to confirm.

🎛️ Adjusting the VFO Tuning Step size

1. Frequency Mode must be entered using the [V/M] key.
2. Long-press the [FUN] key for 2 seconds to launch the configuration list.
3. Scroll to Menu 11 (STEP) and press the VOL knob to enter.
4. Turn the control knob to match your desired tuning step alignment (choices span from 2.5K up to 50KHz).
5. Press the knob once to confirm and click any other key to close out the workspace.

🟢 Keypad Programming Instructions

1. Storing an Amateur Simplex Channel

1. Toggle the radio into VFO mode. Use the microphone UP/DN arrows or the main dial to key in your targeted frequency profile (e.g., 146.520 MHz).
2. Verify that repeater shift configurations are removed: Long-press [FUN] to enter the menu, scroll to Menu 09 (SHIFT), select OFF, and confirm.
3. Press the [FUN] key briefly until the F indicator icon blinks on the screen. An empty channel number will flash an M symbol.
4. Select your targeted destination block channel number using the arrow keys.
5. Press the [V/M] key firmly to store. The screen will sound an execution beep indicating the channel is saved successfully.

2. Storing a Repeater Channel with Access Squelch Tones

1. In VFO mode, tune to your local repeater down-link receive output frequency (e.g., 147.300 MHz).
2. Configure Offset Direction: Briefly press [FUN], then click [REV] repeatedly to rotate through the offset direction profiles: positive shift (+), negative shift (-), or off. Choose the required direction.
3. Configure Offset Magnitude: Long-press [FUN] for 2 seconds, navigate to Menu 10 (OFFSET), press the knob, and adjust the offset distance (e.g., 0.600 MHz). Confirm your setting.
4. Configure Tone Encoders: Press the [FUN] key briefly, then click the [SQL] key to launch sub-audible tone parameters.
5. Press the [SQL] button repeatedly until the T icon lights up on your LCD, meaning transmit CTCSS is enabled. Turn the volume knob to select the repeater's specific analog entry sub-tone (e.g., 100.0 Hz). Press any key to confirm.
6. Write Channel Data: Press [FUN], use the tracking keys to find an empty channel slot, and click [V/M] to commit the complete repeater setup to memory.

🔌 High-Speed Data Lines & Premium Vehicle Antennas

To unlock complete zone optimization or safely upgrade firmware parameters, deploy the official RT98 computer interface cable. Additionally, running high power configurations requires low-loss 50 ohm impedance lines to prevent amplifier degradation. Explore our compatible vehicle hardware setups: