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  1.   PacketRadio System Node Operator's Guide to building, installing, and configuring TheNET X1J4 nodes.
    This PacketRadio Operator's Guide is Y2K compliant.

    Modification that enables node gateway operation of the older (pre-1988) MFJ-1270.

  2. An illustration of a 3 port node/gateway. A 4 port diode matrix may be used with one port left vacant.

  3. This drawing illustrates one of the methods used to an X1J4 dual port ''gateway.''

  4. This drawing illustrates how a four (4) port theNet X1J4 node, gateway stack, (diode matrix), is constructed.

  5. This drawing illustrates how two ROSE switches can be interfaced to form a ''Rose switch Gateway''.

  6. This drawing illustrates how a four (4) port ROSE Switch, gateway stack, (diode matrix), is constructed.

  7. Star Configuration for a node-stack of 5 TheNET, X1J4 nodes.

  8.   Illustration for the installation of the Deviation meter into the X1J4 node.

  9. Hardware Handshaking illustration for most TNC to PCees

  10. Interface two (2) TNCees to one transceiver.

  11. Building the DRSI DPK-96 (9k6 baud) TNC into an X1J4 TheNET node.

  12. This drawing defines the signals associated with the RS-232 standard.


  13. Connect 2 TNCees to 1 Radio; Enables Gatewaying different baudrates on one frequency.

  14. Been there, Done that! DE9 gateways.

  15. Similar to previous 'two TNC to one radio,' but includes text on drawing.

  16. Interface for the Commodore 64 or VIC 20 to the MFJ-1270 TTL comport.

  17. Interfacing the KAM or KAM Plus to the FT-747 for HF BBS applications.

  18. Interfacing the KAM or KAM Plus to the Yaesu FT-757 for BBS, DXCluster, and other HF applications.

  19. KENWOOD 7950 to AEA PK-232 MultiMode controller

  20. Gateway interface for use with NODE/TNCees with de9 comports.

  21. Alinco DR-110 to TheNET X1J4 node or ROSE switch interfacing.

  22. Alinco DR-590 (twin-band) to PK-232 Multimode controller.

  23. Interface for the MFJ-1278 and the Yaesu FT-747 HF transceiver.

  24. Interfacing the PacComm PCB 320 to HF ACCY2 port of the Kenwood TS-450S and the VHF Kenwood TM-231 transceivers.

  25. Alinco 8 pin MIC ports to nodes with 5 pin DIN radio ports.

  26. Alinco 8 pin MIC port to Kantronics KPC-3, KAM, and KPC-2400.

  27. Early Apple to TNCees with DB25 comports.

  28. The Radio Shack Color Computer serial port connections.

  29. Three different types of comports, both serial and TTL.

  30. This interface cable is the adapter for computers with DE-9 comports and TNC with DB25 comports.

  31. The ALINCO DJF1 HandHeld and a TNC2 make a good hilltop node test rig.. or just great Port-A-Packet.

  32. Interfacing the General-Electric/Ericsson MVP for use as a 1200 baud radio.

  33. Interface configuration for the 'HAL RVM-100' and the ICOM IC-28 transceiver.

  34. Interface for the Heath HK-21 'PocketPacket' and early Yaesu handhelds.

  35. Interfacing the IC-281 Icom and the AEA PK-96 for 9600 baud operation.

  36. Interface for the Icom IC-2AT and the Heath HK-21 PocketPacket TNC.

  37. Interface for the Icom IC-27/27H and nodes with 5 pin DIN radio ports.

  38. Interface for Icom IC-28/28A and TheNET nodes or ROSE switch with 5 pin DIN radio ports.

  39. Interface drawing for the Icom IC-290 and nodes with 5 pin DIN radio ports.

  40. Interface for HF use of the Icom IC-735 and the MFJ-1278 or MFJ-1274'B' MultoMode controllers.

  41. Interface drawings for use with 8 pin ICOM and TNCees with 5 pin DIN radio ports.

  42. WOW, here's a package for you... the ICOM HT's and the AEA PK-232.....!

  43. ICOM VHF and HF (MIC 8 pin) transceivers and the MFJ-1278 MultiMode controller.

  44. Icom IC-228 and the MFJ-1270A, B, and C interface.

  45. OK, so now you have another J-Pole calculator.

  46. Remember the 'MAC' with the 5 pin mini-DIN; Here's the interface for your Mac and TNC.

  47. Now you can have power to that remote mountain top node site... and without a 'hassel' from the utility company.

  48. A closer look and some details for adding MOV protection to our SOLAR powered node site.

  49. The Yaesu RJ-45 MIC port connections for 1200 bauds.

  50. Turning the (early) MFJ-1270'B' into an X1J4 theNET node.

  51. Interfacing the Yaesu FT-757 and the MFJ-1278 for HF operation.

  52. An ounce of prevention beats a pound of cure! Lightning protection for the node site and its personnel.


  53. MFJ-8621 setup and data port I/O


MORE Good stuff for PacketRadio... Go to;  The PacketRadio Home page.
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GO TO the TNC to Transceiver interface home page.

If these PacketRadio pages were help to you, please let me know:

Buck "[email protected]"

RASCAL and BUX CommCo are ®™ by G. E. Rogers Sr.
The "PacketRadio Users Notebook" is © G.E. "Buck" Rogers Sr. 1985 - 2003.

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