No, the communicating whistles attached to the air line are air whistles, not
steam.
From: cpsig@xxxxxxxxxxxxxxx [mailto:cpsig@xxxxxxxxxxxxxxx]
Sent: Saturday, June 06, 2015 4:50 PM
To: cpsig@xxxxxxxxxxxxxxx
Subject: Re: [cpsig] Re: CPR Steam Locomotives equipped with air whistle
That surprises me a bit. I thought the signaling whistles inside the
locomotive cab and on the caboose were air whistles and not connected to steam.
Rob Kirkham
From: mailto:cpsig@xxxxxxxxxxxxxxx
Sent: Saturday, June 6, 2015 2:50 PM
To: cpsig@xxxxxxxxxxxxxxx
Subject: [cpsig] Re: CPR Steam Locomotives equipped with air whistle
First, all whistles are steam. Second, modern CPR steam engines had
air-operated whistles. All semi-streamlined engines would have them.
