VarAC is a digital mode that uses the VARA HF virtual Terminal Node Controller (TNC). Because of this team-up, we finally have a ragchew mode that uses the same advanced techniques for communications that ensure your QSOs are sent and received, even with very weak signals, with 100 percent fidelity.

Here are the web-sites used to download the free software for this mode:

VarAC: [ Ссылка ]
VARA HF: [ Ссылка ]

Chapters:
00:01 Introduction
01:50 Software Download
03:14 External Sound Card
03:49 VarAC & VARA HF Settings
07:11 Beacons and CQ
08:36 VarAC QSO Demo
11:37 Summary and End-Notes

FT-891 Menu Settings and Function Settings:

Set Rig mode to DATA

Menu Settings:
01-02 AGC MID Delay = 700 (default)
05-06 CAT RATE = Make Note
05-07 CAT TOT = 100 mSec
05-08 CAT RTS = Disable
07-12 PC Keying = OFF
08-01 Data Mode = Others
08-03 Other Display = 1500
08-04 Other Shift = 1500
08-05 DATA LCUT Freq = 100 Hz
08-06 DATA LCUT Slope = 18 dB/Oct
08-07 DATA HCUT Freq = 3000 Hz
08-08 DATA HCUT Slope = 18 dB/Oct
08-09 DATA In Select = Rear
08-10 DATA PTT Select = DAKY
08-12 DATA BFO = USB
16-03 HF PWR = 50 (or less)

Function Settings:

Function-1:
TNR – as required
VOX – Disable
PRC – Disable
MON – Comfort level
SPL – Disable
IPO – Disable
ATT – Disable
NAR – Disable
NB – Disable
SFT - 0 Hz
WDH – 3000 Hz
NCH – Disable

Function-2:
MTR – Recommend Set-up with ALC, then PO or SWR for operations
SCP – As required.
AGC – AUTO
DNR – Disable
DNF – Disable
CNT – Disable
MOX – Disable
TXW – Disable
MEQ – Disable
QMB Disable

Initial SignaLink Settings:
TX – Mid range,
RX – Mid range,
Delay – fully CCW

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73 de Tom, ND3N

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