System Considerations - microHAM USB Interface II Manual

6. Switch your transceiver to AFSK mode (PKT, DIG or DATA for Yaesu, LSB-D or USB-D for current Icom
transceivers, RTTY or RTTY-R on K2 and USB or LSB for Kenwood, TenTec and older Icom transceivers).
Do not select RTTY or FSK; they do not use the audio input.
7. Click the "Test Signal" button and adjust the TX WAVE slider for normal (rated) output on your transceiver
while keeping the ALC meter as low as possible. Turn off the Test Signal.
NOTE: For the Elecraft K3 only: Do not adjust the TX WAVE slider. Instead, adjust the Line In level (Mic
Gain) in the K3 until the ALC shows five (5) bars.
IMPORTANT WARNING: If you are using the system default sound card ("Speakers" icon has a green
check), click the Sounds tab and select the "No Sounds" scheme to avoid having all of the Windows
sounds transmitted over the air. However, any other Windows sounds, e.g. "streaming audio" will still go
over the air. It is wise to use a separate sound card for digital mode activities.
8. Select the "Recording" tab in the Sound Control Panel
double click the "Line" or "Microphone" (depending on your connections) of the sound card
●
connected to your USB Interface II
click Levels tab and unmute input
●
set level slider to 80% and click "OK"
●
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" must run with the
application. Since both the logging program and microHAM Router are real-time applications, system
performance will be dependent on both CPU speed and the amount of available RAM.
While microHAM Router may run on slower computers, the minimum tested system is a 1.8 GHz Core2Duo
processor, Windows 7, 1 GB RAM, CD-ROM, and USB 1.1 port. Whether Router can run as designed on
slower machines with less memory and leave enough resources for application programs has not been
determined. microHAM Router is not supported on any 16 bit version of Windows (95, 98, ME, SE).
In order to provide sufficient performance for simultaneous operation of microHAM Router, a logging application,
Internet connectivity and other accessory programs, the recommended system is a 2 GHz or faster multi-core
CPU with Windows 8.1 or later, 4 GB RAM, CD-ROM, root USB 2.0 port, and a transceiver with supported
control protocol and logger, control, or digital mode software.
USB Interface II is also compatible with Apple Macintosh systems running OS 10.5 or later. It is supported
by the native FTDI and Core Audio drivers shipped with the operating system. MacLoggerDX
(http://www.dogparksoftware.com/MacLoggerDX.html) by Don Agro, VE3VRW and cocoaModem
(http://homepage.mac.com/chen/w7ay/cocoaModem/index.html) by Kok Chen, W7AY are known to support
microHAM interfaces.
USB Interface II is compatible with most current LINUX distributions. It is supported as standard USB
Serial device.
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7 - SYSTEM CONSIDERATIONS

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