VK3XU's PIK with integral iambic paddles

Drew Diamond (VK3XU) is well known for his home brew projects. I was prompted by his article "Mark 4 CW transmitter for 3.5MHz and 7MHz" in August 2006 AR, to send Drew a couple of PIK chips.

Drew applied his creative mind to the task, evaluated the PIK keyer, and designed and constructed a PIK based keyer. The following tells the story in pictures...

Fig 1: complete iambic keyer including integral paddles

Fig 2: The iambic paddle assembly.

Fig 3: An exploded view of the iambic paddle.

Fig 4: The PIK electronics.

Drew is an accomplished CW operator with an excellent "fist". His opinion of the PIK... "the keyer performs faultlessly on-air", but that speaks more of the human interface aspects of WB4VVF's Accu-Keyer design than of the PIK, which could be viewed as a microcontroller based emulation of that human interface.

Changes

Version	Date	Description
1.01	12/09/2006	Initial.
1.02
1.03
1.04
1.05