RX Controls

RX Controls

The RX applet on the right panel provides all receiver controls.

Header Row

• Slice badge (A/B/C/D) — colored per slice
• Lock icon — tune lock
• Antenna — RX/TX antenna indicators
• Filter width — current filter bandwidth
• Mode dropdown — USB, LSB, CW, AM, FM, etc.
• Frequency — double-click to enter directly

Step Size

Step stepper with ◀ ▶ buttons. Available sizes: 10, 50, 100, 250, 500, 1000, 2500, 5000, 10000 Hz. Step sizes are mode-dependent.

Filter Presets

Mode-dependent filter width buttons:

• USB/LSB: 1.8K, 2.1K, 2.4K, 2.7K, 3.3K, 6K
• CW: 50, 100, 250, 400, 500, 1K
• AM/SAM: 3K, 4K, 6K, 10K, 14K, 20K
• DIGU/DIGL: 1K, 2.4K, 3K
• FM/NFM: fixed by firmware (cannot be changed)

AF Gain / Pan

• AF slider (0-100) — audio volume (client-side)
• Pan slider (L/R) — stereo balance with center marker
• Mute — speaker emoji toggle

Squelch

• SQL button — enable/disable
• Level slider (0-100)

AGC

• Mode dropdown — Off, Slow, Med, Fast
• Threshold slider — AGC-T level

DSP Toggles

• NB — Noise Blanker (+ level in DSP side panel)
• NR — 3-state cycle: Off → NR (radio) → NR2 (client spectral) → Off
• ANF — Auto Notch Filter
• NRL, NRS — additional NR algorithms
• RNN — 3-state cycle: Off → RNN (radio) → RN2 (client RNNoise) → Off
• NRF — Noise Reduction Filter
• ANFL, ANFT — additional notch filters

RIT / XIT

• RIT — Receiver Incremental Tuning (amber toggle + zero + step buttons)
• XIT — Transmitter Incremental Tuning (same layout)
• Step: 10 Hz per click

FM Controls (FM/NFM modes only)

When FM or NFM is selected, the DSP tab becomes OPT:

• Tone mode (Off, CTCSS TX, CTCSS TX/RX)
• Tone value (41 standard EIA tones, 67.0-254.1 Hz)
• Repeater offset (MHz)
• Direction (Simplex, Up, Down)
• REV button