Hallikainen And Friends
Brochure describing program logging system, TVA series audio equipment, and TEL series telemetry. 3M.- DRC190 Digital Remote Control - Instruction manual on DRC190 (about 39 megabytes). The DRC190 is a multisite transmitter control system that allows up to 100 sites in a system. Each site may include analog inputs, control outputs, and status inputs. Each site includes a Basic interpreter and EIA232 port. Communications is over 2 or 4 wire circuits, including telephone line, subcarrier, and half duplex radio.
- LOG112 Program Logging System - audio ad. The LOG 112 and 121 decoder and encoder resulted in a printed program log for automated radio stations. This was the first H&F product. A Teleray CRT terminal (early systems used the Lear Siegler ADM-1 terminal) drove the encoder. The message to be encoded was keyed in to the terminal. When ready to encode a cart, the user hit the "send line" key on the terminal. The encoder started the cart machine, waited 500ms, then brought up a 3.5kHz FSK tone on the cue track of the tape cartridge (after the 1kHz stop tone). The encoder then waited another second, then told the terminal to send its line of data (drive CTS true). The data was FSK modulated onto the cue track of the tape cartride. When the terminal was done, it drove RTS false, and the encoder shut down its tone. When the cartridge was played on air, the decoder detected the 3.5kHz carrier. The decoder then sent a carriage return, line feed, the current time, a space, an alarm code, and another space to the printer. It then enabled the decoded FSK from the cart to be printed. The result was a nicely printed log on a Teleype model 43 printer. The alarm code was a single alphabetic character (A through I). If a particular rear panel input was grounded, the alarm code would print (they were priority encoded, so only one would print). Printing would occur on either the detection of the 3.5kHz carrier or a change in alarm code. This was all done with TTL circuitry, a multiplexed BCD clock, and a UART (no microprocessor).
- TAX161 Time Announcer - audio ad. The TAX161 was a 1.75 inch rack mount cabinet full of CMOS logic and relays. It controlled two tape cartridge machines, one holding announcements of even minutes, the other holding odd minutes. When an automation system closed a start relay to run a time announcement, the appropriate cart was played and the EOM closure routed back to the automation. If a minute was not announced in a particular minute, the system advanced the cart so it would be correct the next minute.
- TEL171 Digital Telemetry Adapter - Instruction manual on TEL171. The TEL171 is a set of four circuit boards that substitutes for circuit boards in the Moseley TRC-15A analog transmitter control system. The TEL171 converts the TRC-15A from analog to digital metering. The instruction manual and factory test procedure are included here. The schematics are not yet scanned due to the large size of the drawings. 2.2M
- TVA Series Audio Mixers (TVA 132/142). The schematics are not yet scanned due to the size of the drawings. 4.4M
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