The Ultrawave Series

If a series is more than one work, thus at least two works, then maybe I have found an "ultrawave series" by Poul Anderson. "Earthmen, Beware!" and "The Star Beast" depend on different applications, mental and technological, of an "ultrawave," which is very similarly described in both stories although I have found one difference:

"'The important thing is that these effects are transmitted with no measurable time lag...'"

("Earthman, Beware!" IN Anderson, Alight In The Void, 1993, pp. 29-60, AT p. 46)

"The transmitter field was generated. At the speed of light, Harol flashed around the world..."

("The Star Beast" IN Alight In The Void, pp. 61-102, AT p. 66)

However, maybe the superhuman Joel Weatherfield detected a deeper level of the ultrawave? According to his account, which mostly matches "The Star Beast":

ultrawave radiation is unrelated to electromagnetism;

vibrating energy fields produce detectable effects without time lag in similar apparatuses elsewhere (this sounds like James Blish's instantaneous Dirac transmitter);

in order to attract his people to Earth, the stranded alien Joel broadcasts pulses representing stars, with intensity standing for absolute brightness and time separation standing for distance;

however, receiving no reply, he realizes that he must instead use his telepathy which turns out to be another part of the ultrawave spectrum.

There is more but it is proving difficult to unravel at nearly midnight so further discussion of the ultrawave will have to be postponed till a later post.