SPECIFICATIONS:

Type: Solid state ,radiotelephone. Has two versions.

Nautilus: Simplex only;  has one synthesizer
Nautilus D:   Duplex operation ; has two synthesizers

Mode: FM voice
RF Power: 25 watts in high power mode;  1 watt in low power mode
Frequency range: VHF marine band Channels 1 to 28 and 60 to 88 less the guard channels of 75 and 76.
Maximum possible channels: 256 but the marine band uses less than half of this amount.

Transmitter range - 156 to 159 MHz standard; (can be extended to 163 MHz with modifications.
Receiver  range - 156 to 163 MHz.
Audio output: 2 watts.

Dimensions - 95mm x 36mm x 270mm
Weight: 5.5 kg
Mains power: 24 VDC. Can also be used on 110/220 VDC or  115/240 VAC with power adaptor units.
Alternate designator NTS403

Comments:

1) A remote control unit can be located up to 100 meters from the transceiver.
2) An optional facility allows two remote control units to be attached to the transceiver,
3) Another option permits the transceiver  with full USA marine band channels and  a dual watch feature other than channel 16.

Nautilus photo courtesy Radio Pics web page

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Contributors and Credits:

1) Nautilus photo :  http://radiopics.com/Marine%20Transceivers/Marconi/Marconi_Nautilus.htm
2) Ross Bradshaw [ross.bradshaw@mypostoffice.co.uk]

Apr 3/20