RADIO RESOURCES
CHEAT SHEETS FOR THE RADIO OPERATOR
Calling Frequencies
160 METERS (1.8-2.0 MHz)
1.808 CW
1.810 QRP CW
1.813.5 SKCC
1.830 - 1.840 CW, RTTY
1.840-1.850 SSB, SSTV, CW
1828.5 DXpeditions CW are frequently here Operations
80/75 METERS (3.5-4.0 MHz)
3.500-3.510 CW DX Window
3.505 DXpeditions CW are here frequently
3.530 / 3.550 SKCC 3.558 CW
3.560 QRP CW
3.790-3.800 DX Window SSB
3.799 DXpeditions SSB are here frequently
3.885 AM 3
.985 QRP SSB
60 METERS (5 MHz CHANNELS)
5330.5 USB phone and CW/RTTY/data
5346.5 USB phone and CW/RTTY/data
5357.0 USB phone and CW/RTTY/data
5371.5 USB phone and CW/RTTY/data
5403.5 USB phone and CW/RTTY/data
40 METERS (7.0-7.3 MHz)
7.000 - 7.010 CW DX Window
7.005 DXpeditions CW are frequently here
7.050 XTAL Controlled Rigs
7.055 SKCC
7.058 CW
7.065 DXpedition SSB USA split to 7.150 and above
7.110, 7.115 QRP Novice CW
7.120 SKCC
7.171 SSTV
7.285 QRP
7.290 AM
30 METERS (10.1-10.15 MHz)
10.106 QRP CW
10.110 DXpeditions CW are frequently here
10.118 CW
20 METERS (14.0-14.35 MHz)
14.050 SKCC
14.025 DXpedition CW Freq -- Usually Split
14.058 CW
14.060 QRP CW
14.114 SKCC
14.195 Rare DX & DXpeditions Frequently Operate SSB
14.230 SSTV
14.285 QRP SSB
14.286 AM
17 METERS (18.068-18.168 MHz)
18.075 DXpeditions CW
18.080 SKCC
18.085 CW
18.145 DXpeditions SSB
15 METERS (21.0-21.45 MHz)
21.025 Rare DX & DXpeditions Frequently Operate CW
21.050 SKCC
21.058 CW
21.060 QRP CW
21.114 SKCC
21.340 SSTV
21.385 QRP SSB
12 METERS (24.89-24.99 MHz)
24.895 Rare DX & DXpeditions Frequently Operate CW
24.908 CW
24.945 Rare DX & DXpeditions Frequently Operate SSB
24.910 SKCC
10 METERS (28-29.7 MHz)
28.025 CW Rare DX & DXpeditions Frequently Operate Here
28.050 SKCC
28.058 CW
28.060 QRP CW
28.114 SKCC
28.120 PSK-31
28.385 QRP SSB
28.675~28.685 SSTV Operating Frequency
6 METERS (50-54 MHz)
50.0-50.1 CW, beacons
50.090 SKCC
50.060-50.080 beacon subband
50.1-50.3 SSB, CW
50.10-50.125 DX window
50.125 SSB
50.3-50.6 All modes
50.6-50.8 Nonvoice communications
50.62 Digital (packet)
50.8-51.0 Radio remote control (20-kHz channels)
51.0-51.1 Pacific DX window
51.12-51.48 Repeater inputs (19 channels)
51.12-51.18 Digital repeater inputs
51.5-51.6 Simplex (six channels)
51.62-51.98 Repeater outputs (19 channels)
51.62-51.68 Digital repeater outputs
52.0-52.48 Repeater inputs (except as noted; 23 channels)
52.02, 52.04 FM simplex
52.2 TEST PAIR (input)
52.5-52.98 Repeater output (except as noted; 23 channels)
52.525 Primary FM simplex
52.54 Secondary FM simplex
52.7 TEST PAIR (output)
53.0-53.48 Repeater inputs (except as noted; 19 channels)
53.0 Remote base FM simplex
53.02 Simplex
53.1, 53.2, 53.3, 53.4 Radio remote control
53.5-53.98 Repeater outputs (except as noted; 19 channels)
53.5, 53.6, 53.7, 53.8 Radio remote control
53.52, 53.9 Simplex
2 METERS (144-148 MHz)
144.00-144.05 EME (CW)
144.05-144.10 General CW and weak signals
144.10-144.20 EME and weak-signal SSB
144.200 National
144.200-144.275 General SSB operation
144.275-144.300 Propagation beacons
144.30-144.50 New OSCAR subband
144.50-144.60 Linear translator inputs
144.60-144.90 FM repeater inputs
144.90-145.10 Weak signal and FM simplex (145.01,03,05,07,09 are widely used for packet)
145.10-145.20 Linear translator outputs
145.20-145.50 FM repeater outputs
145.50-145.80 Miscellaneous and experimental modes
145.80-146.00 OSCAR subband
146.01-146.37 Repeater inputs
146.40-146.58 Simplex
146.52 National Simplex
147.00-147.39 Repeater outputs
147.42-147.57 Simplex
147.60-147.99 Repeater inputs
146.61-146.97 Repeater outputs
1.25 Meters (222-225 MHz)
222.0-222.150 Weak-signal modes
222.0-222.025 EME
222.05-222.06 Propagation beacons
222.1 SSB & CW
222.10-222.15 Weak-signal CW & SSB
222.15-222.25 Local coordinator's option; weak signal, ACSB, repeater inputs, control
222.25-223.38 FM repeater inputs only
223.40-223.52 FM simplex
223.52-223.64 Digital, packet
223.64-223.70 Links, control
223.71-223.85 Local coordinator's option; FM simplex, packet, repeater outputs
223.85-224.98 Repeater outputs only
70 Centimeters (420-450 MHz)
420.00-426.00 ATV repeater or simplex with 421.25 MHz video carrier control links and experimental
426.00-432.00 ATV simplex with 427.250-MHz video carrier frequency
432.00-432.07 EME (Earth-Moon-Earth)
432.07-432.10 Weak-signal CW
432.10 70cm
432.10-432.30 Mixed-mode and weak-signal work
432.30-432.40 Propagation beacons
432.40-433.00 Mixed-mode and weak-signal work
433.00-435.00 Auxiliary/repeater links
435.00-438.00 Satellite only (internationally)
438.00-444.00 ATV repeater input with 439.250-MHz video carrier frequency and repeater links
442.00-445.00 Repeater inputs and outputs (local option)
445.00-447.00 Shared by auxiliary and control links, repeaters and simplex (local option)
446.00 National simplex frequency
447.00-450.00 Repeater inputs and outputs (local option)
FRS - GMRS - MURS
FRS Channels
Family Radio Services
462.5625
462.5875
462.6125
462.6375
462.6625
462.6875
462.7125
467.5625
467.5875
467.6125
467.6375
467.6625
467.6875
467.7125
GMRS Channels
General Mobile Radio Service
462.5500
462.5750
462.6000
462.6250
462.6500
462.6750
462.7000
462.7250
MURS Channels
Multi-Use Radio Service
151.82000
151.88000
151.94000
154.57000
154.60000
CTCSS tone (Hz)
Continuous Tone-Coded Squelch System
67.0
71.9
74.4
77.0
79.7
82.5
85.4
88.5
91.5
94.8
97.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
162.2
167.9
173.8
179.9
186.2
192.8
203.5
210.7
218.1
225.7
233.6
241.8
250.3
Citizens Band
26.96500
26.97500
26.98500
27.00500
27.01500
27.02500
27.03500
27.05500
27.06500
27.07500
27.08500
27.10500
27.11500
27.12500
27.13500
27.15500
27.16500
27.17500
27.18500
27.20500
27.21500
27.22500
27.25500
27.23500
27.24500
27.26500
27.27500
27.28500
27.29500
27.30500
27.31500
27.32500
27.33500
27.34500
27.35500
27.36500
27.37500
27.38500
27.39500
27.40500
Digital Mode Sounds & Waterfall
HAM Computer Programs
This is my "rebuild kit" for installing programs on a new Windows setup. It's mostly HAM stuff so I'm putting it under HAM Radio.
I really like Linux and have used it for the past several years but never got it working 100% with digital modes when I converted my Microsoft Surface Go 2 over to Ubuntu 20, so I am back on Windows 10 and installing software so I figured I'd make a cheat sheet that others might want to look at.
HAM RADIO SOFTWARE
FLDigi Suite W1HKJ.com
A complete digital modes suite that covers 99% of the modes, really all you need with the exception of JS8Call.
fldigi / flarq
flrig
flmsg
flamp
THE BEST weak signal program out there for the Prepper
Programming software for VHF/UHF HTs.
Sync you digital modes while offline with a $13 u-box7 GPS dongle.
Audio interface / soundcard for Digital Modes
Maidenhead Map USA
https://pnwbcme.files.wordpress.com/2022/02/ham_us_grids.pdf
Readability
The R stands for "Readability". Readability is a qualitative assessment of how easy or difficult it is to correctly copy the information being sent during the transmission. In a Morse code telegraphy transmission, readability refers to how easy or difficult it is to distinguish each of the characters in the text of the message being sent; in a voice transmission, readability refers to how easy or difficult it is for each spoken word to be understood correctly. Readability is measured on a scale of 1 to 5.
Unreadable
Barely readable, occasional words distinguishable
Readable with considerable difficulty
Readable with practically no difficulty
Perfectly readable
Strength
The S stands for "Strength". Strength is an assessment of how powerful the received signal is at the receiving location. Although an accurate signal strength meter can determine a quantitative value for signal strength, in practice this portion of the RST code is a qualitative assessment, often made based on the S meter of the radio receiver at the location of signal reception. "Strength" is measured on a scale of 1 to 9.
Faint signal, barely perceptible
Very weak
Weak
Fair
Fairly good
Good
Moderately strong
Strong
Very strong signals
Tone
The T stands for "Tone". Tone is only used in Morse code and digital transmissions and is therefore omitted during voice operations. With modern transmitter technology, imperfections in the quality of the transmitter modulation that can be detected by humans are rare. Tone is measured on a scale of 1 to 9.
Sixty cycle a.c or less, very rough and broad
Very rough a.c., very harsh and broad
Rough a.c. tone, rectified but not filtered
Rough note, some trace of filtering
Filtered rectified a.c. but strongly ripple-modulated
Filtered tone, definite trace of ripple-modulation
Near pure tone, trace of ripple modulation
Near perfect tone, slight trace of modulation
Perfect tone, no trace of ripple or modulation of any kind