The paddle cable is probably already attached to your iambic paddle. If it is a 1/4" style you will need a 1/4" to 1/8" adapter in order to plug it into the K44.
The audio cable is dependent on the transceiver you are using. The best solution is to use the radio's line output. Depending on the radio's manfacturer this could be on the Data, RTTY, Packet, or Modem connector. If you are really lucky it is on a separate RCA jack. In most cases you will need a special DIN connector, refer to your radio manual for details. If you happen to have a SignalLink Interface (or equivalent) its AUX output works perfectly as a source for K44 audio. Otherwise you can use your transceiver's external speaker output but you will have to provide an external speaker across which you can tap audio for the K44.
The keying jack on most transceivers is a 1/4" stereo phone type which accepts an iambic paddle input. Newer radios are now using an 1/8 inch key jack. K44's output jack is an 1/8" inch stereo receptacle. Disable the radio's internal keyer and connect key to tip and ground to sleeve. We recommended using a stereo connector leaving the ring unconnected.
We offer a universal K44 keying cable kit that covers just about any situation you would run into. The kit has one cable with an 1/8" stereo plug on each. You would plug the one end into the K44 key output jack and the other end can go directly into your transceiver if it has an 1/8" key jack. If it has a 1/4" jack use the 1/8" to 1/4" plug adapter included in the kit.
Buy a universal K44 keying cable kit from us for $7.00