It is for use with the MFJ-250
See the MFJ-1793 for the MFJ-1792 with a 20 Meter ¼ wave radiator
Specifications: Number of antenna positions: 4
are you ready to elevate your ham radio experience
MFJ-492X, MEMORY KEYER, MENU DRIVER, WITH 8K RAM 213 It is for use withNo need to read an instruction manual simply select a menu by pressing a button. An LED lights to show you which menu is active. You select a feature by pressing a button. Its as easy as using a computer touch screen! menus are clearly printed on the front panel. From the menu you can save and play messages, decrement serial numbers, set speed, weight, sidetone, enter iambic, semi auto, handkey, message queue, paddle command modes, turn on off, select