EPT004410A

EPT004410A refers to a specific printed circuit board (PCB) assembly used in high-end CB and 10-meter amateur radios, most notably manufactured by Galaxy Radios.
Primary Use and Functions
As of 2026, it remains a critical component for technicians repairing vintage and high-performance radio equipment. Its primary roles include:
Frequency Counter Control: It serves as the dedicated frequency counter PCB for several Galaxy and Ranger (RCI) mobile transceivers.
Compatible Models: The board is most frequently found in the Galaxy DX 99V, as well as similar models like the DX 55, DX 66, and DX 73.
Signal Processing: In various schematics, it is responsible for driving the digital frequency display on the radio’s front panel, allowing operators to see their exact operating frequency.
Technical Details
Manufacturer: Ranger Communications, Inc. (RCI) for the Galaxy brand.
Components: The board typically contains integrated circuits (ICs), such as the RCI8719 PLL or specialized counter chips, alongside a series of diodes (e.g., 1SS355) and resistors for signal regulation.