New England Division Convention Boxborough, MA September 6, 2019 Narrow Band Emergency Messaging System (NBEMS) For Emergency Radio Communications George Blakeslee N1GB

Agenda Overview Digital Communication 4-Part Presentation (1 hour @) Winlink RF/internet email NBEMS FLDIGI NBEMS FLMSG & FLAMP Advanced Topics, Hints, Kinks

What is NBEMS Narrow Band Emergency Messaging System Consists of program suite: Fldigi – Fast Light Digital modem application Flwrap – Wrap a file with a checksum Flmsg – easily send ICS forms and Radiogram Flamp – sends files in blocks Can download from https://sourceforge.net/projects/fldigi/files/  or http://www.w1hkj.com/files Runs on Windows, Linux, and Mac. Released under GNU Public License, so it is completely FREE.

What is NBEMS Prerequisites for NBEMS Operations: FLDIGI, FLWRAP, FLMSG and FLAMP downloaded and installed A basic understanding of your computer Operating System (OS) Ability to create file folders and move files 4

What is NBEMS Download and Install FLDIGI, FLWRAP, FLMSG and FLAMP https://sourceforge.net/projects/fldigi/files/  or http://www.w1hkj.com/files 5

SET UP EQUIPMENT Connect the interface and computer to the radio

What is fldigi Fldigi is a computer program intended for Amateur Radio Digital Modes operation using a Personal Computer. Fldigi operates in conjunction with a conventional HF/VHF/UHF radio transceiver, and uses a sound card as the main means of input from, and output to, the radio. These are audio-frequency signals. It can also control the radio by means of another connection, typically a serial port. Fldigi is multi-mode, which means that it is able to operate many popular digital modes without switching programs

Live demo fldigi exchanges

Configure FLdigi Double click on your FLdigi icon 9

Configure FLdigi Optional Configuration Wizard 10

Configure FLdigi Operator Info 11

Configure FLdigi Audio Device 12

Configure FLdigi Rig Control 13

Configure FLdigi Operating Display 14

Configure FLdigi UI – User Interface 15

Configure FLdigi Waterfall 16

Configure FLdigi RxID 17

Configure FLdigi Misc - NBEMS: FLmsg auto-unwrap 18

Configure FLdigi Misc - NBEMS: FLmsg auto-unwrap 19

Configure FLdigi Misc - NBEMS: FLmsg auto-unwrap 20

Configure FLdigi Misc - ‘Sweet Spot’ 21

Configure FLdigi Autostart 22

Configure FLdigi IO – Enable ARQ 23

Fldigi operation Modes 24

Fldigi operation Modes Mode WPM BW (Hz) Primary Use(s) PSK125 150 320 HF/VHF ‘live’ keyboard * PSK 4x125R 330 475 HF/VHF file transfer mode PSK 3x250R 660 950 HF/VHF file transfer mode * PSK 5x250R 1100 1650 VHF file transfer mode Olivia 8/500 30 500 HF keyboard mode MT63-1000 100 1000 HF file transfer mode MT63-2000 200 2000 VHF file transfer mode Thor1x50 150 900 HF Keyboard mode * * NH Digital Net & HARP 25

Configure FLdigi Modem - Thor 26

Configure FLdigi Modem – MT63 27

Configure FLdigi Modem - Olivia 28

Fldigi operation Macros 29

Fldigi operation Macros 30