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In in Russia I saw a phone cable called "field cable" (провод полевой П-274-М). It is a loosely twisted pair with some iron strains added alongside with copper ones.

Field cable Another field cable

I tried to lookup something similar but I failed to find it. I used phrases like "field cable" and "military cable" but got nothing like that.

Such cable is really good to make a wire antennas on trees because it has teflon-like surface and tolerant against harsh environment.

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  • $\begingroup$ Perhaps it's this: everyspec.com/MIL-SPECS/MIL-SPECS-MIL-C/MIL-C-13294C_12128 ? $\endgroup$
    – Buck8pe
    Jan 18, 2021 at 9:49
  • $\begingroup$ I searched for "copper cable with steel strands" and did not find a clear English term for what you show. Instead that found something slightly different called "copperclad" where all the strands are copper-plated steel instead of a mix of strands. Similarly "reinforced stranded copper wire" didn't really turn up much either. $\endgroup$ Jan 18, 2021 at 18:47
  • $\begingroup$ How wide are the two cables, including its insulation? $\endgroup$ Jan 18, 2021 at 18:51
  • $\begingroup$ Looks like something similar but combining aluminum with steel is common for power transmission: en.wikipedia.org/wiki/…. Searching instead of "ACSR" to see if there was any analogous "CCSR cable" led to a maybe more common term "Aerial Services Wires" which "are supported by either an integral steel wire, glass fibers imbedded in the jacket, or by the use of high tensile copper-clad steel conductors." $\endgroup$ Jan 18, 2021 at 18:53

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That is WD-1 or WD-1A military telephone line.

Lots of hams use it for switchable-direction Beverage receiving antennas, and with good results.


The steel strands provide extra tensile strength.

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I am basing this mostly off of web searches rather than industry experience but it looks like there's two potential terms for a related cable. At least related as to the general purpose — reinforcing conductive wires to better hold their own weight — if not exact construction/materials:

Again, neither of my example links show the exact kind of wire you show but I think you were primarily wanting some ideas for what this sort of reinforced-for-hanging is called in general and I hope this helps!

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  • $\begingroup$ Also, it appears that the iron (i.e. "steel") parts included more for reinforcement would be called the "messenger" strands or wires: youtube.com/watch?v=oVofEtcL3Pw $\endgroup$ Jan 18, 2021 at 19:21
  • $\begingroup$ Whether or not the lower cable is pole-to-house telephone drop cable depends on its size, which @zoonman hasn't yet answered. Also, it's stranded, and all the drop cable I've ever seen has solid conductors. $\endgroup$ Jan 19, 2021 at 17:43

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