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How I set up the Barrett 4050 SDR to the SCS DR-7400 Modem

Swipe the screen from the left side and choose "Audio" in the menu
Your Audio Levels: may vary.
Line Out Level 0 dBm
Line in Level -6 dBm

Your Audio Levels: may vary.
PSK-1250
FSK-1000

Testing was done using:
125 watt power level, without Audio transformers or Ferrites cores in or on the cables.
Antenna was a Fan dipole at 26 ft high and less than 30 ft away from the transceiver
It produced a clean signal and performed as advertised.

Expected radio power output up to approx. 120 watts for Amateur bands
Depending on your licence for Commercial in Canada, the power output is calculate in ERP



Making up your Pactor cable using a 8 pin  & 13 pin with 5' fly leads from your SCS Dealer

8020 - Audio cable, SCS 8pin DIN to raw cable end, 5'
8070 - TRX cable, SCS 13pin DIN to raw cable end, 5'

North America SCS dealers

Call or Webstore
Farralon USA (415-331-1924 press option 2)

Call only







DB-25 Male to Auxiliary port DB 25 female

(Note: 5 pins are connected to common point ground and to the metal cover of the DB25)




DB25 pin to 8 & 13 pin cable information






8 PIN - SCS Cable pin information
(rear view is solder side)



13 Pin - SCS Cable pin information
(rear view is solder side)





I would suggest using heat shrink on the soldered connections and unused wires.
(for strength and short protection)