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some circles considered even more significant— is the remote control of transmitters. This has a history only a year old.
In this, a station transmitter and antenna, usually located at a distance from the studio, is turned on, the various elements are checked and adjusted — all from home base.
More than 700 radio stations are now operating with remote control of transmitters, A. Prose Walker, NARTB director of engineering, proudly told engineers at the convention. It was NARTB which persuaded the FCC to nod approval to this type of automation. This was last year.
Average monthly savings have ranged from $436 to $664, Mr. Walker said. One station reported a savings of $3,000 monthly.
Next big move, Mr. Walker announced, was to get the FCC to okay this type of operation for all radio stations — from 250 w to 50 kw, directional or non-directional.
These Can 'Remote'
At present, the remote operation principle is permitted only to stations without directional antennas and up to those with 10 kw.
Rust Industrial Co., Manchester, N. H., whose system is being used by RCA and Collins, offered two units at the convention. The first, with 10 metering and 20 control functions, sells for $1,245. The second, more elaborate, can perform 25 metering and 50 control functions, is priced at $1,545. Both units require auxiliary gear, running from $300 to $400.
In anticipation of the day when directionals are permitted to be remotely controlled, Rust has a phase monitor which will sell for $1,295.
Paul Schafer Custom Engineering, Burbank, Calif., also showed two remote control units. The first, with 10 metering and
20 control functions sells for $1,195; thej other, with 24 metering and 40 control | functions, including voice communications | with transmitter, sells for $1,595.
For fm station operators who look toj multiplexing to help them make ends meet,| two companies are ready to supply gear.
Multiplex Services showed its apparatus j for two subcarrier channels, being soldi through Gates and Graybar for August de-| livery. Price is $4,500. The receiver which is the other end of this lock and key opera. tion, is made by Browning Labs. It is anj 11-tube, crystal controlled unit, using 3-w audio output to feed up to five or six speak-, ers. It sells for $98.35 per unit. A multi-j plex adapter is priced at $63.85.
Harkins has a multiplexer unit for stations priced at $2,000 for a single sidebandi channel unit, with three additional channels j, possible for $600 per channel. The receivers for this unit, using automatic frequency^ control, sells for $74.50.
In the tv field, focus for many small and potential telecasters were the low powered transmitters shown by Adler Communications Labs., Sarkes Tarzian Inc., Dagej' Television Division of Thompson Products, f and Kay Labs.
Adler showed a 150 w uhf transmitter! for $13,850. Tarzian had a 100 w uhf* station package, including one camera, filnr and slide projection units, for $50,000.P Dage had a 200 w vhf package for slide and film operation for $35,000.
Kay's low power package, for film and" slide operation, was priced at $35-40,000.
Even Philco jumped on the midget station bandwagon by announcing it was prepared to offer a low powered tv package for $25,000. The gear will be built by Adler to'J Philco's specifications.