Look at the ability of the URT-23D and later models to transmit at only 0,01 watt up to 1KW.

https://www.navy-radio.com/xmtr-ship.htm#urt23

I presume this is for "Limited Range Intercept (LRI)" but I don't know how this works in operation? Manually or Automagically?

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Link-11 - HF is used to establish a net when the range between units in the net is from 25 to 300 nm. For ranges of less than 25 nm, HF Limited Range Intercept (LRI) can be used

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