LF/MF Communications Equipment Aboard USS Ling (SS-297) - Part 5

By Howard F. Holden WB2AWQ

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Part 1 LF & MF Communications Equipment Aboard USS Ling (SS-297)

Part 2 LF & MF Communications Equipment Aboard USS Ling (SS-297)

Part 3 LF & MF Communications Equipment Aboard USS Ling (SS-297)

Part 4 LF & MF Communications Equipment Aboard USS Ling (SS-297)

The LM-18 aboard the USS Ling has been restored, is fully operational, and complete with a painstakingly reconstructed calibration table. Both the TBL and the RAK / RAL units have no direct frequency readout, only dial log numbers. Hence the need for the LM-18. The LM-18 is a small unit, about 9" x 9" x 9", with its own separate AC power supply. Surprisingly, the LM and its power supply are relative light-weights, only a few pounds each!

The USS Ling radio room is an intensely crowded place, with barely room for two persons. Bringing this old gear back to life in these tight quarters is most definitely a task! As we worked on the equipment we frequently found our minds wandering. We tried to imagine what it was like in 1945, the closing year of WW2, when the Ling was heading out to the Pacific Theater on it's first war patrol.

Radio operation aboard the Ling is alive and well today. The 10-70 Repeater Association4 recently established a HF setup in the radio room using a "modern" Yaesu FT101-ZD transceiver. We can often be heard, usually on Saturday mornings between 10 a.m. and Noon Eastern local time, around 7043 kHz and 14043 kHz CW, or around 7243 kHz and 14243 kHz SSB.

The call sign is N2SE, (which hopefully will become NX2ND, after the boats' original Navy call sign NXND). The 10-70 repeater Association offers a colorful postcard sized QSL for contacts made (please, request the card with a QSL and SASE). Plan to visit the USS Ling if you are ever in the Northern NJ area. The NJ Naval Museum/USS Ling is open Saturday and Sunday year-round except on major holidays.

The above information is as factually correct and accurate as possible, given our information sources. If you have questions, corrections, or stories concerning LF/MF operation aboard WW2 submarines, and specifically the USS Ling, we would like to hear from you!

4 See http://www.10-70.org  for additional information on the 10-70 Repeater Association and its work on the USS Ling.