From eed66868a9020135f855c1eaf5c944d7317f4036 Mon Sep 17 00:00:00 2001
From: Peli de Halleux <pelikhan@users.noreply.github.com>
Date: Mon, 24 Sep 2018 10:16:03 -0700
Subject: [PATCH] explictely set radio default power to 6 (#1286)

---
 docs/reference/radio/set-transmit-power.md | 2 +-
 libs/radio/radio.cpp                       | 1 +
 sim/state/radio.ts                         | 1 +
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/docs/reference/radio/set-transmit-power.md b/docs/reference/radio/set-transmit-power.md
index 023a52c9..29b58b3a 100644
--- a/docs/reference/radio/set-transmit-power.md
+++ b/docs/reference/radio/set-transmit-power.md
@@ -1,6 +1,6 @@
 # set Transmit Power
 
-Make the ``radio`` signal of the @boardname@ stronger or weaker. It can be as weak as `0` and as strong as `7`.
+Make the ``radio`` signal of the @boardname@ stronger or weaker. It can be as weak as `0` and as strong as `7`. Default is ``6``.
 
 The scientific name for the strength of the ``radio`` signal is
 **dBm**, or **decibel-milliwatts**. A signal strength of `0`
diff --git a/libs/radio/radio.cpp b/libs/radio/radio.cpp
index 0e7d77f2..d7c9becd 100644
--- a/libs/radio/radio.cpp
+++ b/libs/radio/radio.cpp
@@ -53,6 +53,7 @@ namespace radio {
         }
         if (!radioEnabled) {
             uBit.radio.setGroup(pxt::programHash());
+            uBit.radio.setTransmitPower(6); // start with high power by default
             radioEnabled = true;
         }
         return r;
diff --git a/sim/state/radio.ts b/sim/state/radio.ts
index 029f2818..d0e4a201 100644
--- a/sim/state/radio.ts
+++ b/sim/state/radio.ts
@@ -60,6 +60,7 @@ namespace pxsim {
 
         constructor(private runtime: Runtime) {
             this.datagram = new RadioDatagram(runtime);
+            this.power = 6; // default value
         }
 
         setTransmitPower(power: number) {