Often, my HAM friends ask me if I should switch to a different type of key, since I already have a K4 key and like the feel of it. I want to provide an answer here: If I stick with one particular type of key, then this wouldn't be amateur radio. My first key was the D117 key, and the K4 key belongs to the same family. The feel is self-explanatory, and it's a must-have for many experienced ham operators.
However, this "Old Cat" key is very intuitive to use. It's a direct-key design that uses a spring and rear contact mechanism. You can easily feel even the slightest vibrations when pressing the key, making it easy to control the rhythm of the key. Its main features are its clear and decisive feel.
It also has strong adjustability, allowing you to customize your preferred transmitting habits. The spacing adjustment is very straightforward; simply turn the uppermost screw to adjust it. The nut at the back of the handle is used to adjust the tension, and the screws on the sides, according to my personal testing, function to prevent the spring from rotating.
The bottom is very clean and simple, with four non-slip pads that provide excellent grip, to the point where it feels slightly sticky. The base is also perfectly flat. I previously bought three K4 keypads, but they wobbled and fell apart because the bases were uneven. However, this one is extremely stable. All the connecting wires are made of copper, which provides good performance. The handle is very comfortable, with plenty of space for your index and middle fingers, unlike some other keypads that feel cramped. It's also friendly to larger hands.
This is a very easy-to-use switch, even for beginners. It comes in both 3.5mm jack and terminal block versions, and I chose the terminal block version because it's more durable. Thanks for watching!
闽ICP备2021006864号-7
闽公网安备35020602002794号