TRANSATLANTIC RADIO TELEPHONY 



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1 — Measuring field strength. 2 — Outside an antenna terminal hut. 



3 — Pole box for reflection transformer. 4 — The wave-antenna A at Houlton. 



5 — Measuring ground connection imped- 6 — The sixty kilocycle portable trans- 

 ance at a temporary location. mitting station. 



7 — Transmission line 0-B with receiving station in background. 



