Something of an oversight in terms of observational prowess on my part
Seems that there has been a shift in the type of NVIS antenna now installed on Type 23 frigates.
OUT; the Cobham type:-
a COBHAM NVIS P-N 6234-49 is a HF 2-30MHz 150W digitally tuned.jpg
zHMS_St_Albans_Boarding_Team_Returns_to_the_Ship_MOD_45156182 - Copy (2).jpg
IN; the Comrod type:-
a HF230L-N COMROD NVIS compact HF antenna for naval applications from 1.6 to 30 MHz..jpg
MU190025113 royalnavy.mod.uk - Copy.jpg
Note that orientation of the antenna remain as before;
- Stbd side; mounted in an athwartship configuration - RADHAZ marking on hangar roof is semi-circular
- Port side; mounted at an angle of 45 degrees (leading edge facing outboard towards port bow - trailing edge facing inboard toward the stbd qtr) - RADHAZ marking on hangar roof is rectangular and offset towards the stern, presumably to take account of the angle of the antenna array.
F231-HMS-Argyll-026 seaforces.org.jpg
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