ALL digital signals: Radio Control, CW, PTT, FSK • Compatible with all MS Windows based logging or control software the special microHAM "USB Device Router" program creates virtual COM ports for full operation with • standard Windows applications.
Preparing USB Interface II for Use 1. Remove the top cover from the USB Interface II and set the CAT jumpers as shown in the following chart. The CAT interface jumpers must be configured to select the proper level for each radio type.
To configure and use USB Interface II with Windows compatible application programs it is necessary to have installed the USB driver, started the Router, and applied power to USB Interface II by turning on the attached radio or external power supply. Router is then configured to match the requirements of the application (logger or digital mode) software.
Audio Mixer tab and will actively control the audio devices - Automaticaly assign microHAM audio devices: when checked, Router will automatically assign proper audio device of the same name if multiple microHAM interfaces of the same kind are connected to the one computer.
Rename – Creates a custom device name. This is useful if two or more devices are connected to the Router. For example CW KEYER, micro Keyer and USB Interface II can be renamed to more identifiable names as shown here..
Setup Guides: Link to software configuration guides for many common applications. Cable Schematics: Link to cable diagrams. Download Documents: Downloads microHAM documentation including updated manuals and setup guides. You may specify the products for which you want documentation. NOTE: Requires an Internet connection.
Proper assignment of the virtual COM ports is vital for intergration with loggers. Read the following information carefully. USB Interface II has four functions with indication of the state and settings applied by the host application Radio Control (uses RxD and TxD) ● CW (uses DTR) ●...
6 - SETTING AUDIO LEVELS There are two trimers on the side panel of USB Interface II for adjusting audio levels. The one closer to front panel adjusts the level of audio signal level from the radio to the computer LINE IN or MICROPHONE input. The one closer to rear panel provides adjustment of the audio signal level from the sound card to the transceiver AF IN.
● 7 - SYSTEM CONSIDERATIONS USB Interface II can be used with a wide variety of software. The capabilities of those packages will have large influence on the level of computing power needed to utilize USB Interface II. When used with Windows based contest logging applications like N1MM Logger Plus, Win-Test, and WriteLog or Windows based general logging applications like DXBase, DXLab Suite, DX4Win, Logger 32 and others, the microHAM control and interface application “microHAM Router”...
SLOVAKIA 9 - WARRANTY microHAM warrants this product for three (3) years. The product must not be modified in any way or the warranty is voided. Cables are warranted against defects in materials and workmanship for a period of 60 days.
USB Interface II provides a basic USB to serial control interface and a transformer isolated audio interface between a personal computer and amateur transceiver. USB Interface II is connected to the computer using the A-B USB cable and two audio cables included in the package.
It is absolutely important to prevent ground currents from flowing to the common ground point by way of the signal cable. If you use a microHAM "keyer," a good test is to remove the DB15/DB37 connector and USB cable from the keyer and measure the resistance from the shell of the DB15/DB37 to the shell of the USB cable.
Need help?
Do you have a question about the USB Interface II and is the answer not in the manual?
Questions and answers