diff --git a/docs/cli_commands.md b/docs/cli_commands.md
index 0e170a77..f248e4f3 100644
--- a/docs/cli_commands.md
+++ b/docs/cli_commands.md
@@ -425,16 +425,31 @@ This document provides an overview of CLI commands that can be sent to MeshCore
 - `set dutycycle <value>`
 
 **Parameters:**
-- `value`: Duty cycle percentage (10-100)
+- `value`: Duty cycle percentage (1-100)
 
 **Default:** `50%` (equivalent to airtime factor 1.0)
 
 **Examples:**
 - `set dutycycle 100` — no duty cycle limit
 - `set dutycycle 50` — 50% duty cycle (default)
-- `set dutycycle 10` — 10% duty cycle (strictest EU requirement)
+- `set dutycycle 10` — 10% duty cycle
+- `set dutycycle 1` — 1% duty cycle (strictest EU requirement)
 
-> **Deprecated:** `get af` / `set af` still work but are deprecated in favour of `dutycycle`.
+> **Note:** Added in firmware v1.15.0
+
+---
+
+#### View or change the airtime factor (duty cycle limit)
+> **Deprecated** as of firmware v1.15.0. Use [`get/set dutycycle`](#view-or-change-the-duty-cycle-limit) instead.
+
+**Usage:**
+- `get af`
+- `set af <value>`
+
+**Parameters:**
+- `value`: Airtime factor (0-9)
+
+**Default:** `1.0`
 
 ---
 
diff --git a/docs/terminal_chat_cli.md b/docs/terminal_chat_cli.md
index b1a3af2a..c889da96 100644
--- a/docs/terminal_chat_cli.md
+++ b/docs/terminal_chat_cli.md
@@ -30,9 +30,12 @@ Sets your advertisement map longitude. (decimal degrees)
 ```
 set dutycycle {percent}
 ```
-Sets the transmit duty cycle limit (10-100%). Example: `set dutycycle 10` for 10%.
+Sets the transmit duty cycle limit (1-100%). Example: `set dutycycle 10` for 10%.
 
-> **Deprecated:** `set af` still works but is deprecated in favour of `set dutycycle`.
+```
+set af {air-time-factor}
+```
+Sets the transmit air-time-factor. Deprecated — use `set dutycycle` instead.
 
 
 ```
diff --git a/src/helpers/CommonCLI.cpp b/src/helpers/CommonCLI.cpp
index b3eff17f..cf6d4712 100644
--- a/src/helpers/CommonCLI.cpp
+++ b/src/helpers/CommonCLI.cpp
@@ -289,7 +289,7 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
         int dc_frac = (int)((dc - dc_int) * 10.0f + 0.5f);
         sprintf(reply, "> %d.%d%%", dc_int, dc_frac);
       } else if (memcmp(config, "af", 2) == 0) {
-        sprintf(reply, "> %s (deprecated, use 'get dutycycle')", StrHelper::ftoa(_prefs->airtime_factor));
+        sprintf(reply, "> %s", StrHelper::ftoa(_prefs->airtime_factor));
       } else if (memcmp(config, "int.thresh", 10) == 0) {
         sprintf(reply, "> %d", (uint32_t) _prefs->interference_threshold);
       } else if (memcmp(config, "agc.reset.interval", 18) == 0) {
@@ -443,8 +443,8 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
       const char* config = &command[4];
       if (memcmp(config, "dutycycle ", 10) == 0) {
         float dc = atof(&config[10]);
-        if (dc < 10 || dc > 100) {
-          strcpy(reply, "ERROR: dutycycle must be 10-100");
+        if (dc < 1 || dc > 100) {
+          strcpy(reply, "ERROR: dutycycle must be 1-100");
         } else {
           _prefs->airtime_factor = (100.0f / dc) - 1.0f;
           savePrefs();
@@ -456,10 +456,7 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
       } else if (memcmp(config, "af ", 3) == 0) {
         _prefs->airtime_factor = atof(&config[3]);
         savePrefs();
-        float actual = 100.0f / (_prefs->airtime_factor + 1.0f);
-        int a_int = (int)actual;
-        int a_frac = (int)((actual - a_int) * 10.0f + 0.5f);
-        sprintf(reply, "OK - %d.%d%% (deprecated, use 'set dutycycle')", a_int, a_frac);
+        strcpy(reply, "OK");
       } else if (memcmp(config, "int.thresh ", 11) == 0) {
         _prefs->interference_threshold = atoi(&config[11]);
         savePrefs();