NARC-2

Modified

May 18, 2026

Overview

NARC 2 is the second HF station on your left as you enter the station.

Equipment summary

  • FlexRadio Flex 6400M (HF + 6m) transceiver
    • Astron RS-35A power supply
  • Clipper PTT footswitch
  • Dell PC, dual monitor set-up
  • Elecraft KPA1500 amplifier
    • Elecraft power supply

See Figure fig-narc2-radio-connections below.

And as of 2025-05-04:

Connection scheme

flowchart TD
  A[Flex 6400M] ---|Coax-Ant1|B[KPA-1500 Ant 1]
  B ---|50A PowerPole|T[Elecraft Power Supply]
  T ---|220V AC|U(220V outlet)
  J ---|120V AC|V(110V outlet)
  A ---|Cat 6|L(Network switch)
  A ---|Tx1 RCA Rem|B
  A ---|Multiple| N(Halibut Electronics Radio Pro)
  A ---|RCA|Q(Relay)
  Q --- R(Kasa Switch)
  R --- J[Surge Protector]
  E ---|120V AC|I(Kasa Switch)
  I ---|AC Power|J[Surge Protector]
  I ---|Wifi|K(NARC wifi)
  A ---|Power Cable|E[Astron RS-35A]
  B ---|Coax Ant1|D(Antenna Connectors)
Figure 4.1: Connection diagram for NARC2 radio. 
flowchart TD
  A[Flex 6400M] ---|USB|C[NARC2 PC]
  C ---|USB|F(Keyboard)
  C ---|Bluetooth|G(Mouse)
  C ---|HDMI|H(Monitor)
  C ---|CAT 6|L(Network Switch)
  C ---|USB|P(FlexControl Knob)
  C ---|AC Power| Q[Surge Protector]
  Q ---|AC Power| R(110V outlet)
Figure 4.2: Connection diagram for NARC2 PC. 
flowchart TD
  K[Halibut Electronics Radio Pro] ---|RCA-PTT|A[Flex 6400M]
  K ---|TRS-Speaker|A
  K ---|TRS-Mic|A
  K ---|Cat5|J[Halibut Electronics Contest Console]
  K ---|PowerPole|J
  J ---|PowerPole|E(Astron RS-35A)
  L[Heil Proset 1] ---|TRS-Mic|M[Halibut Electronics User Pro 1]
  L ---|TRS-Speaker|M
  N[Heil Proset 2] ---|TRS-Mic| O[Halibut Electronics User Pro 2]
  N ---|TRS-Speaker|O
  M ---|Cat5|J
  O ---|Cat5|J
  P[Ext Speaker] ---|TRS| K
  Q[Clipper footwitch] ---|RCA|K
Figure 4.3: Connection diagram for NARC2 Halibut Electronics Audio interface.

Software summary

Note

These sections are generated by parsing a CSV data file in include/csv/software_versions.csv.

The code is hidden in the output for aesthetic reasons, but may be revealed by examining the source code file.

Operating System

software version date
MS Windows 10 2024-06-08

Digital modes

software version date
flrig 2.0.05 2024-11-27
WSJT-X 2.6.1 2024-11-27
JTAlert 2.60.2 2024-06-08
JS8Call 2.2.0 2024-06-08
fldigi 4.2.06 2024-11-27
Winlink Express 1.7.20.0 2024-11.27
VARA HF 4.8.7 2024-06-08
VarAC 9.1.0 2024-06-08
MTTY 1.71K 2024-06-14
GridTracker2 2.241124 2024-11-27
flamp 2.2.13 2024-11-27

Logging

software version
ACLog 7.0.11

Remote Control

software version date
SmartSDR 3.8.20 2024-11-27

Operating Guide

The operating guide for the Flex 6400M is here