Radio News, January, 1924, pages 874, 928:

A  Broadcasting  Station  De  Luxe

Exterior Picture
Water Tower Loud Speakers THE Round Hills Radio Corporation near New Bedford, Mass., is daily giving a broadcasting program, free to all who care to listen, from the wonderful private station of Colonel Green, listed among the many stations as WMAF.
    The people of New Bedford and vicinity are particularly fortunate to have such a benefactor in their midst and they hear the very best of talent every evening during the week at no cost. Hundreds of parties are parked around the amplifying horns every evening.
    As there is no trolley line to this station, it is necessary to travel by auto out of New Bedford, about 10 miles. To give this program to the people of the city who have no automobiles, the city has installed a smaller station at Buttonwood Park and the public can get the evening program almost from the front porches of homes in this section. For those living farthest away there are trolley cars which are easily accessible to the Park. Station Interior
    The Station at Round Hills is a Western Electric 500-watt affair, with four stages of amplification. The American Telephone and Telegraph Co., of New York City, has arranged to transmit the programs rendered at its station WEAF over its telephone lines to Round Hills, where the speech and music will control the radio output just as if the artists were in the adjoining room. In this circuit there are five stages of amplification at New York, two stages at each of the three points enroute and with the four stages of amplification at Round Hills there is a total of 15 stages before the public gets the program.
    When a program is to be rendered at Round Hills, power is thrown on the set and the wave-length and antenna current checked. The announcer gets a signal that all is ready and makes a final connection with the microphone and then introduces the performer at New York to the audience at Round Hills. A control operator at Round Hills listens to the program through a headset or loud speaker and adjusts the amplification so that the concert program is clear to the audience at all times.
    To make the program available to the public, Colonel Green has had installed a set of loud-speaking sound-projectors on a water tower a short distance from the main station, WMAF, on his estate, and there is plenty of parking space around the tower. When the outfit was first used the program could be heard for some distance outside the grounds of the estate and later the loud-speaker sound-projectors were tipped downward a little so that the sound carried only a short distance away from the tower.