Why could British radio discipline confuse allied forces?

Did British forces also have difficulties with effective radio use?

Yes. They sometimes needed instructions to increase transmitter power, while allies had to understand the terse British vocabulary.

British forces sometimes had to be told to increase radio power because their instinct was to transmit at the minimum setting. Low power created communication problems. British officers also tended to communicate very briefly. In Korea, American forces needed to understand that British vocabulary to interpret what their officers meant.