ALE (I can't show you the SHF D/F Mast configuration for security reasons). Here are some action shots of diving and similar periscope masts. ![]() ![]() ![]() ![]() |
Telescopic aerial like a periscope. Here's a couple of pictures of what we looked like to passing seagulls. The pictures opposite are of Auriga in the Indian Ocean off Aden in 1966. I have called them going going gone and here I am again - with both 'scopes up. The gun was there because of the Borneo war. Which way are we going? Answer - left. The small scope is the attacking piece and the large scope is for searching for the target. Attack forward - search astern. | SHF D/F aerial plus ALJ (see below).Depending upon type of aerial fitted the UA3 could cover up the low ten of Giga Hertz on S, C and X bands | UA3 - for early warning of aircraft radar when snorting at periscope depth and U/VHF listening![]() ![]() ![]() |
Forward mast in conning tower fin complex. Astern of it were respectively: attack periscope, search periscope, radar mast, snort mast | |
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ALFALF System diagram![]() |
Built into top of fin. The fin is at the bottom of this picture with the gun hatch lower and more forward over to the right.![]() ![]() |
VLF/LF Reception 10 to 550 kHz. The ALF Tuning/Control unit.![]() |
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2 loop aerials of immense length built F-A and P-S. | |
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AWO![]() ![]() |
Hinged HF/MF aerial starboard side rear top of fin.![]() |
HF/MF 1.5 TO 24 MHz | 623/TCS/B40/CHC![]() ![]() |
Raised and used at periscope depth and when on the surface if polarisation was critical, otherwise the radiating element was parallel to the sea. Employs send/receive relay therefore simplex working only. | |
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AWJ![]() |
Hand erected emergency whip aerial top con fin starboard side forward. In the picture on the left you can see the big search periscope and aft of it the radar mast - all our masts in Grampus were telescopic. | HF/MF 1.5 TO 24 MHz | 623/TCS/B40/CHC![]() ![]() |
As above, but can only be used on surface. Always collapsed before diving. | |
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ALJ![]() |
Stub aerial mounted in centre of SHF D/F mast. | 100 to 399.9 MHz | 86M or 696 whichever fitted.We had both at one time but the 696 was fitted into all boats from the very early 1960's | Had a 360 degree polar diagram when the mast was lowered for surface or harbour communications. Raised when dived to talk on UHF, but the height of the aerial reduced our line of sight communications down to just a few miles only. | |
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609 | Buoys 1 aft and 1 forward built into and secured to the boats casing. Attached to the boat on 600 foot cables. | 4340 kHz | Released when the submarine was in big trouble. Buoy floated to the surface, the aerial popped-up and began to transmit the word SUBSUNK in Morse code (CW –A1). Used for HF D/F purposes and as a visual marker to show the lay of the sunken boat. Also has cats-eyes and flashing light. | ||
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REH5 | A tape recorder.![]() ![]() |
VLF systems ALF/B41 | To record high speed Morse received from Rugby and other VLF/LF stations. | ||
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