Radio age (Jan 1927-Jan 1928)

Listen to Subantenna Static Eliminators over KYW, Chicago, 536 Meters, every Wednesday night, 7 :30 to 8:00 P. M. Central Daylight Saving Time. UseSIHIMREECroundlnres 6ctDi$tonccloud<">dCkardll$umm« SUBANTENNA — new underground Antenna System astounds listeners and laboratories with loud clear DX on hot summer nights when old style aerial gets nothing but unwanted noise Imagine the intense pleasure of bringing in your favorite distant station loud and crystal clear— right through summer's curtain of static and noise ! But, you don't have to be content with merely imagining it. Real DX in summertime — real big volume — amazing clarity — much better selectivity — all these are now available to you — and, with your present set. Simply connect your set to SUBANTENNA— the marvelous new underground antenna system that uses filtered ground waves instead of noisy air waves. Read PROOF that SUBANTENNA is the Greatest New Thing in Radio f=> Says Static Is No More "I have received the Subantenna. My grandson installed it. STATIC IS NO MORE. Am well satisfied. I can tune in stations I never could coax out of the air even though I had a long aerial." — A.E.F.,Kans. /=> Better Selectivity— No Static "It has always been impossible for me to eliminate the Drake Hotel. I was told that Subantenna would enable me to do this. Although skeptical, in view of many similar claims made by other manufacturers of radio accessories, I had one of the Subantennas installed. The results have been most satisfactory, in that I have not only been able to get every station in Chicago of any consequence, when the Drake was on the air, but out-of-town stations as well. In addition I am able to report that static, which was a source of much annoyance before, has been entirely eliminated so far as I am able to observe." — R. L. P., Chicago. t=> Michigan Gets California "I have had KFI, California, several time and go all over U. S. A. to Portland, Maine . You have the goods. It is far better fo volume and tone on loud speaker than out side aerial." — C. J. S., Mich. Why SUBANTENNA Makes Ever Night a Good Radio Night In summer air, the ratio of static strength to signs, strength favors static. The " noise" is so much greate than the broadcast signal that it hides the music you wish to hear. That's why you don't get distance in the summertime. But, when you use SUBANTENNA, the situation is just reversed. For, in the ground, the ratio of static strength to signal strength favors the latter. In fact, there is so little static in the ground that the broadcast signal easily dominates it, with the result that you hardly heur the static, even on the most distant stations. Radio research men have long known this fact, but no device had ever been perfected by which ground waves could be used. Now, however, you have SUBANTENNA — a great new device which makes radio, for the first time, an all year 'round pleasure. Eliminates Lightning Risk Not only will SUBANTENNA give you loud, clear DX in summer — not onlv will this remarkable invention better the selectivity of your set — but it also completely eliminates the lightning hazard. With SUBANTENNA yo can go right on listening-in during the most severe electrical storm without noise, fear of attracting lightning or damaging your set. FREE TRIAL Underground Antenna System CLOVERLEAF MANUFACTURING CO. 2715-B CANAL STREET CHICAGO, ILLINOIS L