REPEATER DESIGN — XEWFOUNDLAXD-XOVA SCOTIA LINKS 265 



Fig. 9 — Silver-soldering of bulkhead into housing with induction heater. 



period of seven days, a moisture detector, mentioned previously, being 

 used to check that no leakage occurs. 



Glands 



The deep-sea gland was de\eloped from the castellated gland which 

 has been used successfully for a number of years in shallow-water re- 

 peaters. The basic principle of this gland is very simple and is shown in 

 Fig. 10; the polythene-insulated cable core passes right through the 



