USAF MARS Digital Operations
Dave Webb AFA2HV/AFE2DM
NE Division Digital Networks Manager
September 21, 2013
Overview
 NEM 1 & 2 - Northeast Mixed Mode voice and data
network.
TRR – Transcon Radio Relay network – Manned net run
keyboard to keyboard digital format
TPN – Transcon Pactor Netowrk –Unmanned network of
bulletinboard stations automatically forwarding messages.
ALE – Automatic Link Establishment – Stations using
Military Standard software for automatically linking and
sending messages.
W2K – Winlink 2000 – Email over radio.
MIXED MODE NETWORKS
NEM1 – daily at 0900 ET
NEM2 – daily at 1900 ET
Training for digital operation
NEDTM1 – Tuesday 2000 ET
Transcon Radio Relay Net
(TRR)
•Operates in MFSK16 – Multiple
Frequency Shift Keying with 16 tones.
•Operates 7 days a week
•1000 to 1100 ET on channel TVE
•1900 to 2100 ET on channel TVE
•Alternate channel is TVG
Transcon Digital Network
Operationing Requirements
• Stable HF transceiver (synthesized)
• Computer with sound card (or other sound
interface) - 200 MHz Pentium or better
• Windows or Linux Operating System
– Windows 98SE or later version
- Ubuntu Linux is recommended
- Other operating systems if suitable software is
available
• Operator can build necessary cables or buy
ready made commercial components to suit
Transcon Digital Network
Software/Hardware Sources
•
•
•
•
MixW - http://www.mixw.net
Stream - http://xoomer.alice.it/aporcino/
HamScope - http://www.qsl.net/hamscope/
MultiPSK http://f6cte.free.fr/index_anglais.htm
• GMFSK(Linux) - http://gmfsk.connect.fi/
• FLDIGI(Linux) –
http://www.w1hkj.com/Fldigi.html
TRANSCON PACTOR NETOWRK
Based on the legacy BBS system and is used
only by AF MARS.
HF message centers in the NE Division.
AFB2MC – TPE
AFC2MC – TPE Pactor I
TAC Winmor
AFE3MC – TPE
Winlink 2000 (All MARS services)
•Software (RMS Express) is available from
http://www.winlink.org
•There is a Yahoo Tech Group:
MARS_Winlink
•Connects automatically with Winlink 2000
stations via HF. VHF links available in some
areas.
•Connects via internet using Telnet protocol.
•Winmor TNC included in RMS Express for
sound card operation.