WPN-5 (SPN-38) For some oddball reason we actually had the submarine version of this on my first ship, USS Claud Jones (DE-1033). Never worked properly, so I was sent to a month long C school on Ford Island. Finally find out why when the OPS boss tasked me with doing an inventory of all electronic gear assigned to the ship. On day three I went up the main mast and crawled out the yardarm to check the serial number of the antenna coupler. That's when I discovered that the shipyard had run a cable from the radio room up the mast and out the yardarm, but somehow had completely forgotten to actually splice it into the coupler......there it was, dangling free. A day later I was on my way to Mare Island for Nuclear Power School, class 68-4.
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