TinyGate

The new 3-in-1 transceiver interface for digital modes:

a low cost USB interface as kit that provide a integrated soundcard and two independent serial interfaces for CI-V/CAT and a PTT/CW control.

The TinyGate are widely compatible with many digital mode software and supported by many operating systems 

TinyGate


 

  • You are looking for a compact interface for digital modes with full galvanic isolation between your PC and transceiver?
  • You don’t want a jumble of cables with separate soundcard, serial ports and/or CAT adapter?
  • You don’t want trouble installing the drivers of the interface?
Then you’ve come to the right place!

 

A kit with preassembled SMD components and a aluminum enclosure are available from RF-SYSTEM‘s webshop.

 

 

User manual: Download (Updated: 18/9/16)

Assembly guide video (Updated: 22/5/16)

TinyGate Group on Yahoo!

 

Quick Overview:

 

The TinyGate was designed by Martin IW3AUT and is a small, low-cost transceiver interface for digital modes (for example: PSK31, RTTY, WSPR , SSTV, Echolink, APRS, Pactor, ROS, and many more).

As a 3-in-1 interface and powered from a USB connector provides a Sound interface + CAT/CI-V serial interface + PTT/SQL/CW/FSK interface  with full galvanic isolation between Transceiver and Computer by using audio transformers and optocouplers. You can use the TinyGate with many software available either as a freeware, shareware or commercial. This way a great many hams can operate on digital modes on all bands by having just a low cost hardware working with a lot of transceivers and software.

 

TinyGate Hardware block diagram

TinyGate board layout:

Board assemblyThe TinyGate is a 65 x 80mm circuit board that use the PC’s USB port as data and power interface

boardassembly_leftrear_assembled

TinyGate Key Features:

 

  • 3-in-1 USB interface, just only one USB cable to your PC: built-in USB 2.0 High speed Hub
  • Full galvanic isolation between radio and USB interface
  • Integrated USB sound device:
The power supply from the USB host is filtered additionally to keep a low noise on the A/D and D/A
Supported by the following operating systems: Windows XP,  Windows 7, Windows 8, Windows 10, Macintosh OS X and LINUX.
Compliant with USB Audio Device Class Specification v1.0, there are no custom device drivers neccessary.
 
  • Provides 2 independant integrated USB COM-Ports:
1) CAT/CI-V serial interface:
Support for following radio control ports: CI-V, FIF-232, IF-232 (RXD+TXD)
Supported by the following operating systems: Windows XP, Windows 7, Windows 8, Windows 10, Macintosh OS X and LINUX.
2) PTT/SQL/CW/FSK interface:
Squelch(COR) input, positive or negative logic (for Echolink and remote control applications)
PTT relay output: direct keying control without VOX circuit
CW/FSK solid state output (can also be used as PTT: The smart jumper system allow to use either a relay or a solid state output as PTT)
Supported by the following operating systems: Windows XP,  Windows 7, Windows 8, Windows 10, Macintosh OS X and LINUX.
 
  • Controls for receiver and transmitter audio level
  • Quick change USB and Radio interface connectors
  • RJ45 connector for transceiver connection with a flexible pin selection jumper socket (attached to MIC connector, accessory or data port works with virtually all transceiver). A detachable radio cable can be made easily with a standard unterminated RJ45-FTP network patch cable (get a patch cable and cut/remove one of both RJ45 connectors), where you can solder a suitable connector for your transceiver. Here as example my cable  for a ICOM IC7400 transceiver:
    TinyGate cable for a ICOM IC7400 transceiver
  • Leds for USB Audio device, PTT and CAT RXD/TXD activity
  • All communication software which support a standard sound card and a serial port for the PTT can work with the TinyGate. Due the independant sound interface and COM-Ports it can be used also with any combination of CAT, remote operation and data software like MixW, Hamradio Deluxe, DigiPan, MixW, FLDigi, RemAud etc.

 

A brief list of software for Digital Modes:

Software   Notes O/S
Ham Radio Deluxe Digital Master 780   With digital data decoder, Internet remote control and many, many more…. Windows
MixW   Multimode operating software Windows
DigiPan     Windows
FLDigi     Windows/Linux
RemAud   Voice over IP (VoIP) application primarily designed for two-way amateur radio remote control over the Internet Windows
MMTTY     Linux
Multipsk     Windows
ROS     Windows
WSPR   by Joe Taylor, K1JT Windows/Linux/MacOs X

 See also the huge digital mode software list of Serge, RV3APM

 

Preliminary specification:

  • USB 2.0 High speed interface
  • USB Power requirements: 5V, max. 120mA
  • Board size:  65x80mm
  • USB sound interface (codec):
Chip: CMedia CM108AH
48 / 44.1kHz Sampling Rate for Both Playback (D/A) and Recording (A/D)
88 dB (typical) dynamic range
16-Bit DAC Output and 16-Bit ADC Input with a 22dB Microphone Boost
Audio Output:
Level 3Vpp max. @1kΩ typical (AC-coupled)
Frequency response (1 dB bandwidth): 0,02 – 11,5 kHz typical (D/A frequency response conditions: measured with a E-MU0202, include isolation transformer)
Second harmonic: -70 dB typical
Total harmonic distortion (THD): 0.06% typical
D/A Sampling rates: 44.1, 48 kS/s

Audio Input:

Input impedance: 600Ω, (AC-coupled)
max. input level: 3Vpp, (Microphone Boost=OFF)
max. input level: 220mVpp, (Microphone Boost=ON)
Frequency response (1 dB bandwidth): 0,02 – 15 kHz typical (A/D frequency response conditions: measured with a E-MU0202, include isolation transformer)
Noise floor screen capture (span: 0 to 5kHz, 48 kHz Sampling Rate, disconnected input, microphone Boost=OFF)
Noise floor screen capture (span: 0 to 5kHz, 48 kHz Sampling Rate, disconnected input, microphone Boost=ON)
Dynamic Range: 88 dB typical
A/D sampling rates: 44.1, 48 kS/s
 
Audio transformers crosstalk attenuation: 60dB


  • USB COM-Ports:
    Chip: FTDI FT232RL
    Multi-Standard: CAT, FIF-232 (5V TTL), IF-232 (5V TTL):  RXD/TXD, up to 38400 baud
    CI-V: up to 38400 baud
    CAT/CI-V interface power:
    external powered from the transceiver / internal powered from the USB (internal powered works only without galvanic isolation)
    PTT output: reed relay driven from RTS, max. 100V/0,5A
    CW/FSK output: optoisolated open collector driven from DTR or TXD, max. 50V/50mA
    Squelch input: optoisolated logic high or low to activate CTS, 4-20VDC
  • Radio connector (RJ45):
Available signals: RX Audio, TX Audio (MIC), PTT, CW/FSK, COR, CAT/Logic Supply 8-15VDC
 

 

Availability:

A kit with preassembled SMD components and a aluminum enclosure are available from RF-SYSTEM‘s webshop.

For other questions please send me an email.

Thanks!

 

DISCLAIMER