I have wanted to make some type of switchbox that would allow me to switch radios for a set of keys. I pulled something in my back so I needed to take it easy. Instead of field day, I built this!
I have my “Trifecta” set of Begali Keys that is only connected to the IC7300. It would be nice to be able to use all of the radios in my shack with the same set of keys. The box I wanted to build will allow a minimum of three keys, but I added more jacks of various sizes (1/4, 1/8, and RCA) because some keys use different connectors. For the Winkeyer, I would connect the paddles to it and just have the keyer output go to one of the key inputs. This allows for maximum flexibility to my setup. I have a lot of keys, bugs, and paddles, and I occasionally swap them out for fun.
On the radio side, I wanted to support 4 different radios so I can connect the set of keys to the IC7300, K2/100, K2/10, and the FT897 (mostly used for 2M).
Designing the box was pretty easy. I ordered a 2P4T switch, 1/4 jacks, 1/8 jacks, RCA jacks, and a project box from Amazon. Many may already have what they need in the their junk boxes.
Using SmartDraw, I drew up the circuit (it took some doing as I could not find a 2P4T rotatory switch, so I put two 1P4T switches together and drew a line).
On the key side, all if the tips can be connected, and all of the shields can be connected. For the 1/8 stereo jacks, just solder to the tip and shield, leave the 2 shield unconnected. Connect the tip and the shield to each of the poles of the rotatory switch.
On the radio side, each of the throws are connected accordingly. Make sure you do not have any connections on the radio side as you may end up keying multiple radios at once!
I have yet to get things connected to the radios yet, but based on testing, everything appears to be working fine.
Now I have a way to switch between radios for my keys. Just like I do for my antennas.
73 de N8XE
Jason
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