Elecraft K2 LED Indicators Mod
This is a very cool mod for the K2. Not too difficult a project and when it was finished I had LED indication for CW zero beat, split frequency operation, transmit activated, and when the receive antenna is selcted. I used instructions from IK1PMR's website. The schematic can be downloaded here.
Front panel removed and components, wiring and LEDs installed... Zero beat mod not yet installed at this point. I put that in much later... and yet has been the most useful.
Completed front shot. Red XMIT LED in Mode/VOX key cap... Yellow SPLIT in SPLIT key cap... Green Zero beat in RIT key cap... and Yellow RCV ANT in ANT 1/2 key cap.