Completely PLUG & PLAY for use on
Echolink, E-QSO, ISSTV, Plus All Digital Sound Card Modes
(ie PSK-31, SSTV, RTTY etc).
in half duplex mode.
Self-extracting windows software
sent with board to adjust levels and functions.
Works as interface with all soundcard based software such as
PSK31, WJST, RTTY etc. Modes are
software selectable from a GUI (Graphical User Interface). Last
set up is stored in EEPROM on the board for instant use on power
up, other configurations are stored on the PC for recall in
Can use VOX or COS (Carrier Operated Squelch)
switching for the receiver squelch.
The DC level of the COR is set 300mV steps from 0 to 7.5V using
software control. The "open squelch" can be set to be above
or below the COR threshold. This makes it very easy to interface
the board to rigs with squelch outputs or even the RSSI/AGC
line of a receiver.
Transmitter time out can be software selected
in 10 second steps up to 10minutes. This
prevents the TX staying on in a fault condition. The board itself
is protected by a hardware watchdog which will automatically
restart the microcontroller if the embedded program crashes.
more powerful PIC16F628 microcontroller that
has a full interrupt driven RS232 UART (no more "bit bashed"
compromises) and on chip voltage comparators for COR determination.
A speaker out jack with audio amplifiers
and level control .
Built-in audio monitoring with 1w output for listening to audio
to and from radio.
Local microphone and PTT to
allow transmission to be made from the radio or Internet without
disconnecting cables or using a second rig.
A new Auxiliary Audio input concept.
Audio into the Aux jack mixes with the
primary audio so the two audio sources can be used simultaneously.
This is a great feature for creative users of the board. DTMF
Commands are also recognized through the AUX Input.
audio mixer has an active band pass filter to limit audio bandwidths
to 300-3000Hz. This helps to eliminate
HF noise from the soundcard and LF hum loop problems.
On board DTMF decoder. This
is more reliable than software based decoding. DTMF
tones can also be passed to the Internet for remote control
of other ULI boards. By default the tones to the Internet are
muted by the board.
Contains Latched optoisolator controlled
touctone switch will be able to
be setup in the software.
Computer reset circuit. An
optically isolated PC reboot output is available which can be
connected to the PC power switch. This will restart the computer
if the PC software or Windows has crashed; this is detected
by no polling being received by the ULI board for a programmable
time period. For this to work the link software must be in the
Windows start up file. The facility can be disabled in GUI software
for programs that do not continuously poll the control board.
All cables go from the radio to the board
and board to computer.
RJ-45 connector for use with the ICOM
similar rigs. Just attached a Rj-45 cable to the board and the
other end to the radio and no other connections are needed.
The RJ45-8 cable will connect the ULI board to an ICOM 706 providing,
TX audio, RX audio, PTT and the COR squelch! This will also
work with other Icom, Kenwood and Yaesu radios with some or
no modification of the cable.
Standard mono microphone
CAT control. Optically isolated
CAT interface hardware and software to allow user defined commands
to be sent to the rig. These could include changing frequency,
power, mode etc or anything that can be done on the CAT interface.
to 7 user commands are available from either the radio input
for local control of the board or
preset CAT commands to be sent to the rig. Optional 4 digit
"password" can be used to limit access to these commands.
Two way Touchtone decode option.
The user can select the ability to decode
touctones only from the RF side or from both directions. This
is another feature that allow for further experimentation.
Built in Power Plug. This
board has a bridge rectifier which is idiot proof. Power will
be accepted either with the center positive or center negative.
You won't have to be afraid of mixing them up.
Built in Serial Port Connector!!!
DPDT Relay for PTT Control (1-side) as well as experimental
usage (for the other side).
Proper double sided PCB with a solid groundplane
on the top, which avoid RF pick
up you often get with cheaper single sided versions.
24. Operates off
of 12V. Power connector and wire supplied.
indicate power, PTT, link operational and COR.
Board comes complete
with instructions and
block diagram for easy set up.
here for details