➤ Contents
✪ Signals Operating Instructions (SOI) for HF Digital Net organizations
✪ Quick Reference Guides
✪ Website Links for Nets, Organizations, and Software
✪ Other Resources
✪ Digital Bands with Net Frequencies
✪ Propagation
✪ Learning About HF Digital Mode Comms
✪ Problem Solving and Bug Band-aids – moved to https://sitrepnet.com/index.php/problem-solving/
Signals Operating Instructions (SOI) for HF Digital Net organizations
❏ AmRRON – https://amrron.com/2024/05/21/signals-operating-instructions-soi-version-5-0-released/
➤ AmRRON StatRep Version 5.1 – Effective JAN 01, 2025 Download Link
❏ Black Swan Net (Ohio) – https://www.blackswancomex.org/net/soi
❏ ERIN – https://unchainedpreppers.com/forum/radio/ Updated monthly.
❏ GhostNet – https://github.com/s2underground/GhostNet
❏ PrepperNet – https://www.preppernet.net/posts/communications-academy-soi-signals-operating-instructions Need to be signed in to access this link, but creating an account is free.
❏ SEEN – https://www.senetwork.us/downloads
Quick Reference Guides
❏ JS8Call Quick Reference – Formatted to use as a half-sheet. Works well when laminated. Stephen, KN4AM
❏ JS8Spotter Quick Reference – Formatted to use as a half-sheet. Works well when laminated. Stephen, KN4AM
❏ FLAMP Quick Reference – Formatted to use as a half-sheet. Works well when laminated. Stephen, KN4AM
❏ Kleopatra Quick Reference – Formatted to use as a half-sheet. Works well when laminated. Stephen, KN4AM
Website Links for Nets, Organizations, and Software
❏ AmRRON – https://amrron.com/
❏ Black Swan Net (Ohio) – https://www.blackswancomex.org/
❏ ERIN – https://unchainedpreppers.com/forum/radio/
❏ GhostNet – https://github.com/s2underground/GhostNet/
❏ GhostNet Videos – https://www.youtube.com/playlist?list=PL93ufUXbUR1rXnjw6QxueJXfVWxJSxkaX
❏ MAGNET – https://magnethf.com/
❏ PrepperNet – https://www.preppernet.net/
❏ JS8Call – http://js8call.com/
❏ JS8Spotter and MsgAuth – https://kf7mix.com/
❏ FLDIGI suite – https://www.w1hkj.org/
❏ FLMsgViewer – https://drive.proton.me/urls/GMW5HXZ3J4#I2b5WFwgUoMJ
Other Resources
AmRRON Setup Scripts
Raspberry Pi Build for AmRRON script (included in the script files)
Time Conversion Chart
Maidenhead Grid System – How it works
Maidenhead Grid Map of North America
Maidenhead Grid Map of the World
Find your Maidenhead Grid Square location
SitRepNet Macros for FLDIGI (.mdf file)
ERIN NCS Macros for FLDIGI (.mdf file)
ERIN NCS Macros for FLDIGI, including FLAMP and ANCS macros(.mdf file)

Settings for displaying the full set of Macros.
Digital Bands with Net Frequencies
These are the digital frequencies permitted with a General Class or higher license, followed by known Net and Calling frequencies within those bands.
- 20 Meters: 14.025 – 14.150
- 14..072 – Calling Freq.
- 14.078 – Calling Freq.
- 14.107
- 14.110
- 14.115
- 40 Meters: 7.025 – 7.125
- 7.042 – Calling Freq.
- 7.078 – Calling Freq.
- 7.090
- 7.107
- 7.110
- 7.115
- 80 Meters: 3.525 – 3.600
- 3.578 – Calling Freq.
- 3.585
- 3.582 – Calling Freq.
- 3.588
- 3.595
Low Digital Net Usage Bands
- 15 Meters: 21.025 – 21.200
- 17 Meters: 18.068 – 18.110
- 30 Meters: 10.100 – 10.150
- 60 Meters: Channelized with restrictions
- 5.332
- 5.328
- 5.358.5
- 5.373
- 5.405
Known Net and Calling frequencies for digital modes other than JS8, Contestia 4/250, or MFSK32
Source – https://www.qsl.net/sv1grb/psk31.htm
- 20 Meters: 14.025 – 14.150
- 14.070 – PSK
- 14.083 – RTTY
- 14.230 – SSTV
- 40 Meters: 7.025 – 7.125
- 7.040 -PSK
- 7.043 – RTTY
- 80 Meters: 3.525 – 3.600
- 3.580 – PSK
- 3.590 – RTTY
- 3.735 – SSTV
Propagation
Learning About HF Digital Mode Comms
❏ https://us06web.zoom.us/rec/share/_pwHIZ7XqccJn_tLPJ5JTxihk2hTlkaIKy4hBMZ4H8EnzaaNCXoidaqwWfuJ10Ut.oLUnDkxaqabxpXyQ – Zoom call presentation on MAY 19, 2025 by Richard KD8NOA. Topic: 1. Is it likely that the internet will become unavailable? 2. If that happens, how will we get news, information, and intelligence without the internet? 3. How can ham radio contribute?. Enter Passcode 10.#cH%H
❏ Power Point file for Zoom call presentation on FLAMP – DEC 30, 2024 by Richard KD8NOA
❏ Zoom call presentation on DEC 23, 2024 by Richard, KD8NOA – Enter Passcode *Gj+Wh3j
❏ https://us06web.zoom.us/rec/share/80nnL_9Ys9wyJmhK1YeKhbi07CLvD27IqKIpAtGyJlPF-GWwVNmxFtF4HUUE-A.wcLnsg-beFU2KWSP – Zoom call presentation on JAN 13, 2025 by Richard KD8NOA. Topic: EzNEC Antenna measurements. Enter Passcode 4=FTz$7o
❏ https://youtu.be/GguEyswhI5M – PGP Signatures Using Kleopatra, a tutorial by Richard, KD8NOA
❏ https://youtu.be/-gZ6bmxgwAk?si=NOF7miIi5ositME_ – No license Digital HF – Laptop or Android – FLDigi, FLMsg, and FLAmp
Problem Solving and Bug Band-aids now has its own separate page