FARPN

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====== Hardware and Station Considerations ======

This page is not intended to be a tutorial for setting up your FARPN station, but to cover some considerations as you select equipment for a FARPN node.  An existing HF station with a soundcard interface to a computer is adequate for connecting to FARPN.

=====Radio=====
HF packet generally requires a transceiver capable of putting out more than 30-50W on SSB.

See [[troubleshooting-audio|troubleshooting audio]] for information on adjusting your receiver and transmitter for packet.

====Specific Radios====
//Some specific radios have additional settings that need to be adjusted//

The pages below include radios we know have been used for FARPN, with some additional details about configuring them for packet radio use.  These are supplemental to the other guides, not a complete configuration tutorial.

=== Icom ===
  * [[icom-ic7300|IC-7300]]
  * [[icom-ic706series|IC-706 series / IC-703 / IC-7000]]

=== Yaesu ===
  * [[yaesu-ftdx10|FTDX10]]
  * [[yaesu-ftdx3000|FTDX3000]]
  * [[yaesu-ft817|FT-817/818]] (not recommended without amplifier)

=== Kenwood ===
  * [[kenwood-thd72|TH-D72]]
  * [[kenwood-thd75|TH-D75]]


=====Interfaces=====
The FARPN tutorials are written with the assumption that a soundcard interface is being used with a software modem such as Direwolf.  Hardware TNCs exist but are generally less effective at decoding packets over marginal conditions, and often do not support more modern error correcting protocols.

=====Antennas and Tuners=====
Any HF antenna that works well for other purposes is appropriate for FARPN but an ideal antenna does not require a tuner, automatic or otherwise.  Multi-band resonant antennas, such as trapped dipoles, fan dipoles, or certain off-center fed dipoles (OCFDs) are ideal for this purpose, and allow bandswitching without the addeded complexity of re-tuning your antenna system.

=====Protecting your other radios=====
It is very tempting to set up a FARPN or other HF packet node as a second transceiver or in addition to several receivers.  One should //be careful// that antennas are not close enough together that the FARPN station, operating somewhat automatically, will not put out enough power to overload or possibly damage your other radios.

This can be tested with a nanoVNA connected to both antennas, measuring the loss between your FARPN transmitting antenna, and each other antenna used by your station.

Disconnecting other antennas while your packet station is enabled is wise, but if you plan to run a receiver at the same time as FARPN, 'receiver frontend protection' devices are widely available.