Option 1: Using The Usb-62B And The Ct-99 Cable Assemblies - Standard Horizon HX300 Programming Manual

2.2 Option 1: Using the USB-62B and the CT-99 cable assemblies

For those who happen to have the Standard Horizon CT-99 cable assembly around, the
remaining process will be fairly straightforward. The CT-99 is required for program-
ming a number of fixed-mount Standard Horizon radios. It also happens to provide an
easy means of hooking up to the USB-62B for accessing the TX DATA, RX DATA and
GND lines.
The pinout of the USB-62B connector is identified in documentation accompanying
interface units for certain Yaesu amateur radio products, including the Yaesu FT-817/D
radio.
Figure 6: The USB-62B connector (female). The essential pins are labeled TX DATA, RX DATA and
GND and reflect the signal names at the radio end of the cable.
Using a multimeter with the CT-99 cable assembly, the pinout is easily identified.
Figure 8 refers — note the notch and the orientation of the connector.
The CT-99 should be plugged into the USB-62B which in turn should be plugged
into a PC/USB port. At the CT-99 end, refer to figure 8 for details on how to route the
TX DATA, RX DATA and GND signal wires into the mini-USB connector which goes
into the HX300 radio.
Figure 7: The USB-62B connected to the CT-99, wired to the mini-USB connector which in turn goes
into the HX300.
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