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QRPGuys KX Single Lever Mini Paddle
First, familiarize yourself with the parts and check for all the components. If a part is missing, please
contact us and we will send one. You must use
qrpguys.parts@gmail.com
to request a part.
Parts List
1 – QRPGuys KX Single Lever Paddle PCB, 5 pieces in all
1 – J1, 2x2 female right angle header
1 – SS paddle leaf, 1.25" long
2 – 4-40 x 3/16"L thumbscrew
1 – 4-40 x 3/8"L SS pan head Phillips screw (used for soldering assembly holding)
2 – 4-40 x 1/2"L SS pan head Phillips screw
2 – 4-40 SS nut
2 – 4-40 brass nut
2 - #4 SS lock washer
2 – #4 SS flat washer
2 – 2-56 x 3/16" SS pan head Phillips screw
2 – 2-56 brass nut
2 - #2 SS lock washer
1 – 4-40 x 1"L pan head screw (used for soldering assembly holding)
1 - 1/2" wide x 2"L plastic shim
1 - 1/2" x 1" vinyl caplug
Even if you have done radio kit assembly before, please read through all the instructions before you start.
This kit is a little different, in that the mechanical components are parts of a printed circuit board. The
instructions give you the scope of the project and an understanding of the techniques we have employed.
You will be assembling the paddle from PCB material, and when assembled, also forms the electrical
connections. There are solder pads and registration marks that must be observed so that when you tack
and solder, it will make a sturdy mechanical and electrical assembly.
The tools you will need are a soldering iron with a small tip, solder, #1 Phillips screwdriver, needle nose
pliers, tweezers for the small hardware, cookie sheet, and a flat surface to work on.
Page 1 of 6
el_sl_assy_021918.pdf
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Summary of Contents for QRPGuys KX Single Lever Mini Paddle
- Page 1 Parts List 1 – QRPGuys KX Single Lever Paddle PCB, 5 pieces in all 1 – J1, 2x2 female right angle header 1 – SS paddle leaf, 1.25” long 2 – 4-40 x 3/16”L thumbscrew 1 –...
- Page 2 These are the five pieces and the names we will be using during the assembly. It has been brought to our attention that on some boards there may be a extra trace connecting the top two pads on the “Left Contact Holder” for the 2x2 in-line connector. Before assembly please check to see with an ohm meter if they are connected.
- Page 3 Important: On all the soldering you do, you will use the same technique. You tack a single tiny point first and, then check to see that it is square and aligned with the registration lines and other notes. It is easy to re-heat the joint and adjust the alignment when there is only a single point.
- Page 4 Once all this is aligned and secured, place on a flat surface, and put a “small” tack between each contact holder and the support. Leave the support screw in place. Next, position the contact holder/support assembly on the paddle base with the registration marks, and lightly tack a couple of points on the ends.
- Page 5 Next, the two brass 4-40 nuts need to be permanently soldered to the “inside” of both the contact holders. Use the 4-40 x 3/8”L SS screw, and, a #4 lock washer to hold them in place, and solder the brass nuts to the PCB.
- Page 6 Installing the contact screws: Install the contact screws to each contact holder as shown. Observe the order of the hardware. The contact distance to the paddle leaf can be adjusted from a few thousandths of an inch to whatever the user feels comfortable with for sending.