diff --git a/include/maca.h b/include/maca.h
index e9079ea9d..3091685ce 100644
--- a/include/maca.h
+++ b/include/maca.h
@@ -412,6 +412,8 @@ void init_phy(void);
 void vreg_init(void);
 void ResumeMACASync(void);
 void radio_init(void);
+void radio_off(void);
+void radio_on(void);
 uint32_t init_from_flash(uint32_t addr);
 void set_power(uint8_t power);
 void set_channel(uint8_t chan);
diff --git a/src/maca.c b/src/maca.c
index 6f0608aba..9416e4dd4 100644
--- a/src/maca.c
+++ b/src/maca.c
@@ -146,6 +146,19 @@ void vreg_init(void) {
 	*(volatile uint32_t *)(0x80003048) = 0x00000ff8; /* start the regulators */
 }
 
+void radio_off(void) {
+	/* turn off the radio regulators */
+	reg(0x80003048) =  0x00000f00;
+	/* hold the maca in reset */
+	maca_reset = maca_reset_rst;  
+}
+
+void radio_on(void) {
+	/* turn the radio regulators back on */
+	reg(0x80003048) =  0x00000f78; 
+	/* reinitialize the phy */
+	init_phy();
+}
 
 /* radio_init has been tested to be good */
 void radio_init(void) {