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The PK Series
A Complete Self-Contained DTMF Encoder Assembly

PK-1 PK-1K PK-2 PK-2K	12-Key DTMF Encoder 12-Key DTMF Encoder w/Relay 16-Key DTMF Encoder 16-key DTMF Encoder w/Relay	The M-Series option is a special Encoder package for mounting any PK-1, PK-1K, PK-2 and PK-2K Pipo Encoder to surfaces that are inaccessible from the rear, such as walls, mobiles, dashboards, panels, systems interface and test equipment. The M-Series option consists of a detached frame which is secured to surfaces that are inaccessible from the rear, such as walls, mobiles, dashboards, panels, systems interface and test equipment. The M-Series option consists of a detached frame which is secured to the mounting surface. The Encoder body is then press-fit into the frame. Pipo Encoders are Rugged & Reliable Pipo Communications is in the business of manufacturing Touch-Tone Encoders of premium quality. Encoders are increasingly being used in critical situations such as emergency communications, military, RCC's, industrial installations and others where, we believe, encoder failure cannot be tolerated.
The PK Series is a new design for the demanding Land Mobile Industry—an industry where a contact failure can be catastrophic. Over the years, Pipo has developed the most reliable contact system available to tolerate high and low temperature extremes over a prolonged period of cycling. These quality units are the first of their kind to feature waterproof and dustproof sealed gold dome contacts and steel keys. Rubber keys could never meet these demands. Operable from 4-5 to 60 VDC at temperatures from -22° to +160°F. Output Level will drive any transmitter or system and is adjustable by an extremely stable multiturn trimpot, with access from the front of the Encoder.
The K-Series option has a built-in keying circuit to automatically key a transmitter or other system. The keying circuit uses a S.P.S.T. Relay sealed in gas with a 3 watt contact rating (110ma @28 VDC-resistive). The relay contacts close when any key of the Encoder is pressed, and remain closed for 0 to 3 seconds after any key is released. The relay contact-opening delay time of the K Series Encoder is factory set at approximately 2 seconds, but the delay time can be easily adjusted from the back of the Encoder via the small trimpot. The K Series offers improved convenience and ease of operation. Available for all PK-1 and PK-2 Encoders.		WORKMANSHIP is superior and QUALITY CONTROL is rigid. Every encoder that Pipo manufactures will perform flawlessly when installed and for many years in the future. SAME DAY SERVICE. Normally our units are delivered straight from stock and sent the same day you order.
PK Series
Specifications
Catalog & Instruction Sheet (PDF File: 468K)
Announcement Sheet (PDF File: 798K)