diff --git a/zk/Foundation_licence_conditions.md b/zk/Foundation_licence_conditions.md
index 839db47..a3428de 100644
--- a/zk/Foundation_licence_conditions.md
+++ b/zk/Foundation_licence_conditions.md
@@ -2,10 +2,12 @@
 tags: [radio, ham-study]
 ---
 
-- Business and any commercial activity is not permitted
 - An amateur radio licence is _only for self-training in radio communications_
-- Ofcom is the UK TV and radio regulator
-- Ofcom issues amateur radio licences
+- Business and any commercial activity is not permitted
+- Ofcom is the UK TV and radio regulator and the body that issues amateur
+  licenses
+
+## Ofcom rules
 
 **You must**:
 
@@ -22,7 +24,19 @@ tags: [radio, ham-study]
 - in cases of reported interference, ask you to log the transmissions you have
   made over a specified time period
 
-**Acceptable operating locations**:
+## The following types of activity are not permitteed
+
+- Business or commercial activity
+- The use of encryption or codes, other than Morse Code
+- Broadcasting, defined as "transmitting for general reception" (e.g. this would
+  constitute "pirate radio")
+  - The only scenario where broadcasting is permitted is during the CQ stage,
+    when you are seeking a contact to talk to
+  - Or when you are operating a "Net", defined as a conversation between three
+    or more amateurs where communication is first established with at least one
+    individual member of the net
+
+## Acceptable operating locations
 
 - UK
 - Channel Islands
@@ -33,3 +47,18 @@ they are in international water or airspace. (Note that TX from aircraft has
 power restrictions as specified in Schedule 1 listings.)
 
 The Foundation licence does not permit operating in any other countries.
+
+## EMF rules
+
+> "EMF" stands for _electromagnetic field_
+
+The Foundation licence specifies that amateur equipment must not expose the
+public to EMF over a certain threshold. This threshold is **10 Watts
+[ERIP](/zk/Antennas.md) or approximately 6.1 Watts ERP**.
+
+All amateurs must complete an EMF assessment to demonstrate they are operating
+within the required limits. Ofcom can request an assessment at any time.
+
+If you are likely to exceed the threshold you must demonstrate that actions are
+being taken to ensure the limits are maintained. If no provisions are necessary,
+you specify that "power levels are below the threshold".