SPECIFICATIONS:

Type : Solid state transmitter. The Salvor 4 is suitable for use either as a reserve unit in a high powered radio station or as a main transmitter in small or short voyage vessels such as ferries.
Modes:  A1A,  A2A and A3 which had reduced power  on 2182 KHz

Frequency range: 405 to 525 KHz.  Available spot frequencies for  410, 425, 454, 468, 480, 500 and  512 KHz .
Power Output:

Depending on the antenna used,
A1A        100  watts
A2H        160 watts ( Plate modulation increases power output over the CW value. Grid modulation will typically reduce power output). .
A3  (2182 KHz) 60 watts

Mains Power input: 24V DC supply from battery at 22 amps.  Optionally, a 115 VAC external mains supply can also be used.

Dimensions -  The cabinet is 505 mm (19 iin) wide; 314 mm (12 tin) high and 503 mm  (20 in) in depth

Features: Additionally. a radiotelephone alarm signal! generating device, complete with test facilities, is incorporated into the transmitter. Provision is also made for keying and starting the
transmitter from an external radiotelegraph automatic keying device and when employed as a reserve transmitter, this is the standard method of control.

Comment:
1)There are four marks in this series. For the last set of the series, the Roman numeral 'IV' designator was dropped and the numerical suffix '4' was applied.
2) This transmitter was introduced in 1979.

Salvor 4 photo courtesy Ships Nostalgia web page.

Atop this Salvor 4 example is a chimney-type air vent to extract hot air from the final RF stage because there is no fan in this design. Situated in the middle of the chimney is the feedthrough which connects connects the RFamp stage  to the antenna.  (Image via Mariner Magazine)

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Contributors and Credits:

1) http://www.shipsnostalgia.com/gallery/showphoto.php/photo/96023/title/part-of-marconi-console-2c-fort-perch-rock/cat/530
2) Bruce GW4XXF <bruce(at)gw4xxf.free-online.co.uk>
3) Ross Bradshaw [ross.bradshaw@mypostoffice.co.uk]
 

May 17/20