The MFJ-557 is a Deluxe Morse Code Practice Oscillator straight key model developed by the MFJ Enterprises brand. It has a contact pushed to create and send the practice message, and it has dimensions of 3.75-inches by 2.75-inches, which makes it compact and easy to carry. The radio and communication device is handy in learning the coded language which is useful for sending short messages.
Product Identifiers
Brand
MFJ
GTIN
0702646177954
UPC
0702646177954
eBay Product ID (ePID)
1737650127
Product Key Features
Year Manufactured
Easy to use
Compatible Brand
For Drake, For Heathkit, For Ranger, For Galaxy, Universal, For Wouxun, For Kenwood, For Collins, For Ten-Tec, For Elecraft, For Hallicrafters, For RadioShack, For Icom, For Yaesu, For Realistic