Embedded Files
The following instructions are to make a custom "Y" cable to connect the Barret 4050 HF SDR radio to a Tigertronics SignaLink and a data RS-232 Serial connection.
This includes a SignaLink Plug & Play Jumper Module that handles conversion of balanced (Barrett 4050) to unbalanced (SignaLink) audio.
With the two audio transformers soldered (and wires insulated) on the connector header, the custom Jumper Module can easily be moved to another SignaLink.
Barrett 4050 SignaLink Cable (USB Serial)
SignaLink with Jumper Module
Audio Transformers and Connector Header
Jumper Module before Heat Shrink (side)
Jumper Module before Heat Shrink (top)
PARTS LIST
C2G 10258 Cat5e Cable - Snagless Unshielded Ethernet Network Patch Cable, TAA Compliant, Black (3 Feet, 0.91 Meters) (quantity 1, Amazon.com--Note, SignaLink USB Part Number SLUSBNC includes Part Number SLCABNC: Un-terminated cable (bare wires on radio end))
C2G 52030 DB9 M/F Serial RS232 Extension Cable, Black (6 Feet, 1.82 Meters) (quantity 1, Amazon.com)
EZSync FTDI chip USB to 5v TTL UART Serial Cable, Wire end, 1.5m, TTL-232R-5V-WE Compatible, EZsync009 (quantity 1, Amazon.com)
NorComp Inc. 171-025-103L001 (quantity 1, Digi-Key)
NorComp Inc. 970-025-010R011 (quantity 1, Digi-Key)
Triad Magnetics SP-70 (quantity 2, Digi-Key)
Aries Electronics 16-600-10 (quantity 1, Digi-Key)
BARRETT 4050 AUXILIARY CONNECTOR PINOUT
Barrett 4050 Auxiliary DB25 Serial RS-232 DB9
7 (RS-232 Ground) <---> 5 (GND/Ground, Yellow)
2 (Rx Data/data input) <---> 3 (TXD/Transmit Data, Red)
3 (Tx Data/data output) <---> 2 (RXD/Receive Data, Brown)
Barrett 4050 Auxiliary DB25 SignaLink (RJ-45/T-568B)
9 (PTT In) <---> 3 (White/Green)
11 (Bal. Tx Audio In) <---> 2 (Orange)
12 (Bal. Rx Audio Out) <---> 1 (White/Orange)
13 (Ground) <---> 8 (Brown)
24 (Bal. Tx Audio In) <---> 7 (White/Brown)
25 (Bal. Rx Audio Out) <---> 6 (Green)
SIGNALINK JUMPER MODULE AND RJ-45 PINOUT
G Ground <------------------------------------------> 8 Brown
G Ground <---> (2) SP-70 #2 (4) <---> 7 White/Brown
G Ground <---> (2) SP-70 #1 (4) <---> 6 Green
--- 5 White/Blue
PWR 4 Blue
PTT Push To Talk <------------------------------------------> 3 White/Green
MIC Audio Output <---> (1) SP-70 #2 (3) <---> 2 Orange
SPK Audio Input <---> (1) SP-70 #1 (3) <---> 1 White/Orange
SERIAL CABLE PINOUT
Serial RS-232 DB9 Barrett 4050 Auxiliary DB25
1 DCD (Data Carrier Detect) Black
2 RXD (Receive Data) Brown <---> 3 (Tx Data/data output)
3 TXD (Transmit Data) Red <---> 2 (Rx Data/data input)
4 DTR (Data Terminal Ready) Orange
5 GND (Ground) Yellow <---> 7 (RS-232 Ground)
6 DSR (Data Set Ready) Green
7 RTS (Request to Send) Blue
8 CTS (Clear to Send) Purple
9 RI (Ringing Indicator) Gray
TRIAD MAGNETICS SP-70 PINOUT
1 Hot
2 Ground
3 Balanced
4 Balanced
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