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RS-UV3A

Memory Commands

RC – Recall Channel

Section titled “RC – Recall Channel”

Recalls operating parameters from a memory channel.

Syntax

Section titled “Syntax”
RCn

Parameters

Section titled “Parameters”
ParameterRangeDescription
n1–9Memory channel number

Examples

Section titled “Examples”
RC1             # Recall channel 1
RC5             # Recall channel 5

Recalled Parameters

Section titled “Recalled Parameters”
  • RX frequency
  • TX frequency
  • CTCSS tone frequency
  • Squelch mode (CTCSS settings)
  • TX power level

Notes

Section titled “Notes”
  • No query form—use CP to view channel contents
  • Channel 0 is current operating parameters (set at ST0)
  • Invalid channels return no response
Section titled “Related Commands”
  • ST — Store channel
  • CP — View channel parameters

ST – Store Channel

Section titled “ST – Store Channel”

Stores current operating parameters to a memory channel.

Syntax

Section titled “Syntax”
STn

Parameters

Section titled “Parameters”
ParameterRangeDescription
n0–9Memory channel number

Special

Section titled “Special”
ChannelDescription
0Power-on default settings
1–9User memory channels

Examples

Section titled “Examples”
ST1             # Save to channel 1
ST0             # Save as power-on defaults

Stored Parameters

Section titled “Stored Parameters”
  • RX frequency
  • TX frequency
  • CTCSS tone frequency
  • Squelch mode (CTCSS settings)
  • TX power level

Notes

Section titled “Notes”
  • ST0 saves current state as power-on default
  • Settings persist through power cycles
  • Configure all parameters before storing

Setup Example

Section titled “Setup Example”
# Configure for local repeater
FD146940        # 146.94 MHz, -600 offset
TF10000         # 100.0 Hz CTCSS
TM1             # Encode tone
PW1             # High power


# Save to channel and as default
ST1             # Save to channel 1
ST0             # Also save as power-on default

CP – Channel Parameters

Section titled “CP – Channel Parameters”

Reports all parameters for a memory channel without switching to it.

Syntax

Section titled “Syntax”
CPn

Parameters

Section titled “Parameters”
ParameterRangeDescription
n0–9Memory channel number

Examples

Section titled “Examples”
CP0             # View current operating parameters
CP1             # View channel 1
CP5             # View channel 5

Response Format

Section titled “Response Format”
TX: 146520
RX: 146520
Tone: 10000
TM: 0
PW: 1

Notes

Section titled “Notes”
  • Does not change current operating frequency
  • Channel 0 shows current state
  • Useful for scanning channel contents

CC – Check Channel

Section titled “CC – Check Channel”

Checks if the squelch is open on a specific memory channel.

Syntax

Section titled “Syntax”
CCn

Parameters

Section titled “Parameters”
ParameterRangeDescription
n1–9Memory channel number

Response

Section titled “Response”
0               # Squelch closed (no signal)
1               # Squelch open (signal present)

Notes

Section titled “Notes”
  • Temporarily tunes to the channel
  • Takes ~50 ms for carrier squelch
  • Takes ~100 ms for tone squelch
  • Returns to original channel after check
  • Useful for scanning applications

Scanning Example

Section titled “Scanning Example”
CC1             # Check channel 1
CC2             # Check channel 2
CC3             # Check channel 3

A controller can use this to find active channels.

FD1 – Factory Defaults

Section titled “FD1 – Factory Defaults”

Resets all parameters and memory channels to factory default values.

Syntax

Section titled “Syntax”
FD1

Notes

Section titled “Notes”
  • Resets ALL settings
  • Resets ALL memory channels
  • Some settings require power cycle to take effect
  • No confirmation prompt—executes immediately

Default Values After FD1

Section titled “Default Values After FD1”
ParameterDefault
Frequency146.520 MHz
ModeSimplex
Squelch3
Volume12
CTCSSOff, 131.8 Hz
PowerHigh
Baud Rate19200
BeaconOff
CallsignRS-UV3
Section titled “Related Commands”
  • ST0 — Save current as default (partial save)