To Reflector
We proudly present the NAVIGATOR interface to our fellow ham radio community.
  Click here to take a look inside:                   Click here to read the eHam reviews: 
   Navigator Software Defined Interface
                                                            Specifications - Part 1    

The NAVIGATOR Interface is m
ade in USA, FCC Class B certified, ICS/CAN certified, RoHS certified and CE complaint.  The NAVIGATOR Interface is the only interface on the market that meets and exceeds these compliance standards.  Buy made in USA.  It's good business and we could use the money too!

The Navigator by US Interface is a full featured digital multi-mode interface connecting a Ham Radio Transceiver to your Personal Computer.   Connection to the PC is by a single USB cable.  The Navigator provides all audio and control functions required as well as power through this single USB cable.  A block diagram of the Navigator is shown below.

                                   NAVIGATOR Block Diagram          

The Navigator Interface
Made in USA

All USB devices are controlled through an internal 4 channel USB Hub controller.  Full duplex, dual channel audio is provided by the USB Audio Codec.  Three dual USB UART devices provide 6 COM ports.  These COM ports are assigned to interface functions and provide compatibility with all existing software applications.  The assignments are:

                Hub channel 1  Channel 1    -  USB Dual Channel Audio Codec I/O
                Hub channel 2  COM port A  -  Transceiver CAT Control
                                         COM port B  -  PTT/CW control &  DCD input
                Hub channel 3  COM port A  -  WinKey V22 CW Controller
                                         COM port B  -  RTTY/ FSK Controller
                Hub channel 4  COM port A  -  General Purpose DB-9  RS-232 DCE port
                                         COM port B  -  Navigator Options Controller

All Navigator options are Software Defined there are NO jumpers or switches to connect or change around at all.   You will never have to open up the Navigator to reconfigure it for different transceiver.  ALL the configuration is done via our NavOptions software shown on Specifications Page, Part 2.

An audio monitor with volume control is provided within the interface so that you can hear the side tone of all audio generated modes such as PSK.  Side tone monitoring of the WinKey CW controller as well as the FSK Controller are also provided.

The Navigator is designed for use with a PC using the Microsoft 2000, XP and Vista and Win7 operating systems.   MAC OS-X (Snow Leopard and Lion) is also supported as is Linux.

The Navigator Interface is made the USA and is FCC Class B certified for a USB digital device.  The Navigator is also RoHS certified,  Industry Canada Standard certified and CE (European) compliant.

USB Device Serial Numbers
Each device connected through the hub carries a unique serial number so that Navigator is assigned the same COM ports each time it is plugged in, or power is turned on.

Multiple Interfaces on One Computer - if you want to operate more than one Navigator on on computer, just let us know, and we will assign unique USB addresses to each Navigator - no charge for this service.
 This allows multiple copies of the operating software to be running simultaneously, provided that each instance “belongs to it’s own directory (or folder) within the computer.

This also means that each instance can be operating either the same or different types of transceivers.

If a transceiver with dual receive such as the Icom IC-7800 or Yaesu FT-1000D are connected, only one instance of the operating software is required, since the Navigator interface has two input channels one for the receiver and sub-receiver.

Bus Powered
Total current for Hub and all Interface devices is less than 350mA.
Current draw during Hub enumeration less than 30mA.
Soft power control of VBUS for downstream devices.
Removes VBUS when in suspend.
Power LED is activated when Hub is enumerated and VBUS is applied.
CW and PTT controls are disabled for 10 seconds during device enumeration.


USB Audio Codec
Standard Microsoft Audio Device
2 channel Output DAC 16 bit
2 channel Input ADC 16 bit
Codec operates at sampling rates up to 48,000 Hz

Analog interface 2 channel  Input
Transformer Isolated with separate analog and digital grounds
1:1 isolation transformers for each channel
Level controlled by front panel potentiometer for each channel
Software Defined input attenuation 0dB or -15dB for each channel
Dual receiver transceivers are supported, each receiver with its own separate input channel

Analog interface 2 channel Output
Channel #1 used for audio monitor
Channel #2 used for audio drive to the transceiver.
Transformer isolated, separate analog and digital grounds
10K ohm audio transformer
1 uFd Blocking capacitor on output
Output filter: Sallen-Key Low Pass Filter
Level of audio driving RF Output controlled by front panel potentiometer
Software Defined output attenuation: 0dB or -20dB.  

Audio Monitor
Listening level controlled by front panel potentiometer
Internal speaker frequency response: 500 Hz to 4000 Hz

Modes Monitored
All modes generated via the Audio Codec such as PSK, MFSK, Olivia, MT63, Throb, AFSK RTTY, SSTV and more.  CW side tone from WinKey controller.  Software controlled enable/disable directly from the WinKey WK2MGR Setup Manager.  FSK side tone generated by FSK controller gives a clear audio representation of signal sent to digital FSK.  Software Defined disable of FSK Side Tone.

RFI Filtering all input signals and bi-directional input/output signals to the interface are filtered at the 
Navigator connector to reduce stray RF from entering the unit.

A TTL level PTT is also provided for transceivers that require it.
No power is used from the transceiver to help power the interface. 

            Go to Specification Page 2


CAT and Transceiver CONTROL

Serial COM channel dedicated to CAT functions.  Data rate settable up to 115,200 baud. You can set the actual data rate compatible with your transceiver.

CAT Interface combinations supported are: 

Half duplex TTL level high true two wire, open collector transistor drive.  TTL receive.

A 3.5 mm (1/8 inch) connector is provided at the rear of the Navigator as an  auxiliary output for CI-V applications.  The CI-V signal provided for Navigator control of the transceiver is also provided on the DB25S connector.  The CI-V Aux connector is used for other ICOM devices which may be under control of the software operating the Navigator.

Full duplex TTL level high true three wire, open collector transistor output drive, TTL receive.

Full duplex TTL level high true three wire, TTL output drive, TTL receive.

Full duplex TTL level low true three wire, inverted TTL output and input.

Full duplex RS-232 level low true three wire, RS-232 bipolar levels for input and output.

Other control signals:

All transceiver interface signals are available at the DB25S connector on the back of the Navigator interface.  Pin outs are compatible with all cables for the older RE, RE Plus and RE Standard interfaces.

Output control signals include PTT, CW, and FSK.  These are all open collector transistor outputs.

Input signals include the DCD input to the PTT/CW UART, for use with VOIPapplications such as Echolink and IRLP that need to know when the rig Squelch has been activated.

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