Raspberry Pi TNC
MFJ-1270Pi
INSTRUCTION MANUAL
Based on the original by John Hansen
©
2020
MFJ Enterprises, Inc.
300 Industrial Park Rd. Starkville, MS 39759
P: (662) 323-5869F: (662) 323-6551
Page 1: ...Raspberry Pi TNC MFJ 1270Pi INSTRUCTION MANUAL Based on the original by John Hansen 2020 MFJ Enterprises Inc 300 Industrial Park Rd Starkville MS 39759 P 662 323 5869 F 662 323 6551...
Page 2: ...l handbooks or other official publications The copy of this manual provided to the customer will not be updated to reflect current data Customers using this manual should report errors or omissions re...
Page 3: ...RY RESET 10 2 5 CONNECTING THE RADIO 10 2 6 TRANSMIT AUDIO ADJUSTMENT 10 3 TECHNICAL ASSISTANCE 11 List of Figures 1 An MFJ 1270Pi stacked on a Raspberry Pi 1 2 Opening the terminal 2 3 Terminal Windo...
Page 4: ...board has been everywhere The MFJ 1270Pi Raspberry Pi TNC supports the packet TNC modes used for APRS iGates and Digipeaters and VHF packet for Winlink It will support HF Winlink with the addition of...
Page 5: ...ager finishes flashing the SD card insert it into the slot at the base of the Raspberry Pi Connect a mouse keyboard and monitor to the appropriate ports on the Raspberry Pi then power up the Pi At fir...
Page 6: ...o not run commands with elevated priveleges for no reason As the warning box above explains root and other superusers can do anything they want to the operating system up to and including breaking it...
Page 7: ...he Raspberry Pi will ask to reboot Tell it yes It is a good idea to make sure Raspbian is up to date If the Pi has internet access you can do this from the command line by entering the following sudo...
Page 8: ...MFJ 1270Pi Raspberry Pi TNC Instruction Technical Manual Figure 5 Interfacing Options Figure 6 Serial Login Disable mkdir home pi pitnc 5...
Page 9: ...ms zip will unpack the zip archive into two files If you now enter ls l you will see the original zip file and the two scripts Note that both are colored white and are preceded by the characters rw r...
Page 10: ...TNC Pi Your terminal should now look like the one in Figure 8 If you are not already there switch to the directory that you placed these programs in by using the cd command just like earlier The form...
Page 11: ...it still does not work call MFJ Technical Support Assuming all is well you can now set the TXDelay This is optional as generally speaking the default value will work just fine If you choose to alter i...
Page 12: ...serial port this is the factory setting and then configure each additional TNC to have a unique I2 C address on it You would need to set these boards one at a time because only one serial TNC Pi can b...
Page 13: ...You can either wire up a male DE 9 to mate with the one on the TNC Pi or if you d prefer you can use the four holes below R7 labeled Radio to hard wire a radio connection No header is provided in the...
Page 14: ...st check the appropriate section of this manual If the manual does not reference your problem or reading the manual does not solve your problem you may call MFJ Technical Service at 662 323 0549 or th...
Page 15: ...USER NOTES...
