14-08-2017, 10:44 AM
While the CTR20 isn't listed on http://www.radiomuseum.org, there is a CTR24 which is described as a Marine Band transceiver for small craft.
The Tx frequencies listed for it match two of the frequencies in your photo, so your find was possibly also Marine Band.
Also, a couple of pictures here, about halfway down the page with a little bit of info.
http://www.radschool.org.au/magazines/Vol57/Page15.htm
Terry VK5TM
The Tx frequencies listed for it match two of the frequencies in your photo, so your find was possibly also Marine Band.
Also, a couple of pictures here, about halfway down the page with a little bit of info.
http://www.radschool.org.au/magazines/Vol57/Page15.htm
Terry VK5TM