Useful links

Propagation and band conditions

6

Propagation

VOACAP

HF propagation predictions and link-quality estimates between two locations by band, time and conditions.

• HF
• propagacija
• DX

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Propagation

PSK Reporter

Live map of digital-mode reception reports such as FT8, FT4 and related modes worldwide.

• FT8
• FT4
• propagacija

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Propagation

Reverse Beacon Network

Global network of skimmers reporting CW and digital signals so you can see where your transmission was heard.

• CW
• RBN
• DX

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Propagation

WSPRnet

WSPR spots and weak-signal propagation data across the HF bands.

• WSPR
• HF

Open (opens in a new tab)

Propagation

DXMaps

Real-time propagation events and spots — especially useful for VHF/UHF, Sporadic-E, tropo, meteor scatter and aurora.

• VHF
• UHF
• Es

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Propagation

NOAA Space Weather

Official solar activity, geomagnetic conditions and space-weather data.

• solar
• K-index
• aurora

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DX and spots

2

DX

DXWatch

DX cluster spots with filters by band, DXCC entity, callsign and other criteria.

• DX
• cluster

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DX

DX Summit

One of the best-known web DX cluster interfaces.

• DX
• cluster

Open (opens in a new tab)

Callsigns / callbook

2

Callbook

QRZ

The best-known international amateur callbook — callsigns, operators, QTH, locator, QSL info and station profiles.

• callbook
• QSL

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Callbook

HamQTH

Free amateur callbook plus useful operator and locator lookup services.

• callbook
• FREE

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Logs, QSL and awards

3

Logs & QSL

ARRL Logbook of The World

Electronic QSO confirmation and support for ARRL awards such as DXCC and WAS.

• QSL
• LOG
• DXCC

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Logs & QSL

Club Log

Log analysis, DXCC statistics, expedition log search, OQRS and DX tools.

• LOG
• DX
• OQRS

Open (opens in a new tab)

Logs & QSL

eQSL

Electronic QSL cards and contact confirmation.

• QSL

Open (opens in a new tab)

Contests

3

Contests

WA7BNM Contest Calendar

One of the most complete international amateur-radio contest calendars.

• CONTEST

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Contests

CQ World Wide

Rules, results and information for CQ WW contests.

• CONTEST
• CQ WW

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Contests

3830 Scores

Publish and browse claimed amateur-radio contest scores.

• CONTEST

Open (opens in a new tab)

POTA / SOTA / WWFF

5

Portable

Parks on the Air

Map, spots, logs, references and activations for POTA locations.

• POTA

Open (opens in a new tab)

Portable

POTA Documentation

Official documentation for POTA activators and hunters.

• POTA
• OFFICIAL

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Portable

Summits on the Air

Official SOTA portal — summit database, rules and activations.

• SOTA

Open (opens in a new tab)

Portable

SOTA Maps

Interactive map of SOTA summits and activation data.

• SOTA
• map

Open (opens in a new tab)

Portable

World Wide Flora & Fauna

Official WWFF portal with references, rules and protected-area activation info.

• WWFF

Open (opens in a new tab)

APRS

2

APRS

APRS.fi

Map of APRS stations, packets, digipeaters, IGates, telemetry and movement history.

• APRS
• map

Open (opens in a new tab)

APRS

APRS.org

Original APRS documentation — concepts, protocols and technical material.

• APRS
• docs

Open (opens in a new tab)

DMR

5

DMR

BrandMeister

BrandMeister network — repeaters, hotspots, talkgroup info and Last Heard tools.

• DMR

Open (opens in a new tab)

DMR

BrandMeister Help

Official BrandMeister docs for hotspots, repeaters, SelfCare and talkgroup configuration.

• DMR
• docs

Open (opens in a new tab)

DMR

RadioID

Register and look up DMR ID numbers and repeater IDs.

• DMR
• ID

Open (opens in a new tab)

DMR

Pi-Star

MMDVM hotspot and digital-voice configuration system.

• DMR
• hotspot

Open (opens in a new tab)

DMR

WPSD

Modern hotspot dashboard system for MMDVM and digital radio networks.

• DMR
• hotspot

Open (opens in a new tab)

Meshtastic / LoRa

4

Mesh

Meshtastic

Official Meshtastic project site.

• Meshtastic
• LoRa

Open (opens in a new tab)

Mesh

Meshtastic Documentation

Firmware, LoRa regions, channels, routing, MQTT, devices and configuration.

• Meshtastic
• docs

Open (opens in a new tab)

Mesh

Meshtastic Map

Map of publicly visible Meshtastic nodes.

• Meshtastic
• map

Open (opens in a new tab)

Mesh

Meshtastic GitHub

Source code, firmware, issue tracker and project development.

• Meshtastic
• code

Open (opens in a new tab)

Satellites

4

Satellites

AMSAT

Amateur satellites — frequencies, projects, status and operating information.

• SAT

Open (opens in a new tab)

Satellites

SatNOGS Network

Global network of open satellite ground stations, orbits and satellite receptions.

• SAT

Open (opens in a new tab)

Satellites

N2YO Amateur Satellites

Track orbits and passes of amateur radio satellites.

• SAT

Open (opens in a new tab)

Satellites

Heavens-Above

Satellite, pass and orbital-object tracking.

• SAT

Open (opens in a new tab)

WebSDR / remote receivers

3

WebSDR / SDR

WebSDR

Directory of public WebSDR receivers around the world.

• SDR

Open (opens in a new tab)

WebSDR / SDR

rx-tx.info

Map and listing of public KiwiSDR and related remote receivers.

• SDR
• KiwiSDR

Open (opens in a new tab)

WebSDR / SDR

OpenWebRX

Web SDR software and public receiver ecosystem.

• SDR

Open (opens in a new tab)

Regulations / band plan / BiH

3

Regulations

RAK BiH — radio-amateri

Official BiH information, forms, amateur licences, callsigns, repeaters and regulatory documents.

• BiH
• OFFICIAL

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Regulations

IARU Region 1 Band Plans

Official recommended amateur band plans for IARU Region 1.

• OFFICIAL
• band plan

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Regulations

Savez radio-amatera Republike Srpske

News, activities, contests and amateur-radio information in Republika Srpska.

• BiH
• RS

Open (opens in a new tab)

Repeaters

1

Repeaters

RepeaterBook

Large international database of FM and digital repeaters.

• repeater
• FM
• DMR

Open (opens in a new tab)

Antennas and RF calculators

4

Antennas & RF

66pacific

Large collection of amateur antenna, electronics and RF calculators.

• ANTENNA
• RF

Open (opens in a new tab)

Antennas & RF

AntennaCalcs

Calculators and tools for antenna sizing and analysis.

• ANTENNA

Open (opens in a new tab)

Antennas & RF

Hamwaves

RF, antenna and electronics calculators plus technical references.

• ANTENNA
• RF

Open (opens in a new tab)

Antennas & RF

RigExpert

Documentation and educational material on antenna measurement, SWR, VNA and RF systems.

• ANTENNA
• SWR
• VNA

Open (opens in a new tab)

Coax / SWR / transmission line

3

Antennas & RF

KV5R Coax Loss Calculator

Calculate losses for common coaxial cables including frequency and SWR effects.

• RF
• coax
• SWR

Open (opens in a new tab)

Antennas & RF

Times Microwave Calculator

Professional coax and transmission-line loss calculations.

• RF
• coax

Open (opens in a new tab)

Antennas & RF

Mini-Circuits Calculators

RF calculators for dB, power, attenuation and related parameters.

• RF

Open (opens in a new tab)

Digital signals

1

Tutorials & technique

Signal Identification Wiki

Large library of waterfall images, audio samples and descriptions of radio signals and digital modulations.

• SDR
• signals

Open (opens in a new tab)

Locator / grid / distance

2

Tutorials & technique

K7FRY Grid Mapper

Maidenhead locator map with distance/bearing and visual grid tools.

• grid
• locator

Open (opens in a new tab)

Tutorials & technique

Levine Central Grid Square

Convert coordinates and addresses into Maidenhead locators.

• grid
• locator

Open (opens in a new tab)

Technical documentation

3

Tutorials & technique

ARRL Technical Information Service

Large collection of technical amateur material — antennas, EMC/RFI, measurements, stations and electronics.

• docs
• EMC
• ANTENNA

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Tutorials & technique

RSGB Technical

Technical articles and guides on antennas, EMC, propagation and radio equipment.

• docs
• EMC

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Tutorials & technique

All About Circuits

Electronics, circuit theory, practical tutorials and technical reference.

• electronics

Open (opens in a new tab)

Digital modes / radio software

4

Software

WSJT-X

Official software for FT8, FT4, WSPR, JT65, Q65, MSK144 and other weak-signal modes.

• FT8
• FT4
• WSPR

Open (opens in a new tab)

Software

FLDIGI

Digital radio modes such as PSK, RTTY, Olivia and many other text modes.

• PSK
• RTTY

Open (opens in a new tab)

Software

JS8Call

Digital text communication based on JS8/FT8 technology.

• JS8
• FT8

Open (opens in a new tab)

Software

GridTracker

Visual tracking of digital contacts, grids, maps and award statistics.

• FT8
• grid

Open (opens in a new tab)

Logging software

4

Software

Log4OM

Free advanced amateur logbook with DX cluster and online-service integrations.

• LOG
• FREE

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Software

N1MM Logger+

The most popular free contest logging software.

• LOG
• CONTEST
• FREE

Open (opens in a new tab)

Software

CQRLOG

Linux amateur-radio logbook.

• LOG
• Linux

Open (opens in a new tab)

Software

Ham Radio Deluxe

Commercial suite for logging, CAT control, digital modes and other station functions.

• LOG
• COMMERCIAL

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VHF / EME / meteor scatter

1

DX

ON4KST Chat

Schedules and chat for VHF/UHF/SHF, EME, meteor scatter and other weak-signal activity.

• VHF
• UHF
• EME

Open (opens in a new tab)

DX expeditions

2

DX

NG3K ADXO

Calendar and announcements of DX expeditions.

• DX

Open (opens in a new tab)

DX

Club Log Expeditions

DXpedition log search and active expeditions.

• DX
• LOG

Open (opens in a new tab)

Webshops — Europe

4

Webshops

WiMo

Large European amateur shop — transceivers, antennas, coax, SDR, test gear, digital equipment and accessories.

• COMMERCIAL
• EU

Open (opens in a new tab)

Webshops

Martin Lynch & Sons

Large UK amateur shop with a wide range of radio equipment and accessories.

• COMMERCIAL
• UK

Open (opens in a new tab)

Webshops

Moonraker

Radio equipment, antennas, scanners, SDR and accessories.

• COMMERCIAL
• UK

Open (opens in a new tab)

Webshops

Nevada Radio

Amateur and communications gear, antennas, power supplies and accessories.

• COMMERCIAL
• UK

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Webshops — other

3

Webshops

DX Engineering

One of the world’s largest amateur catalogues — antennas, parts, test gear and RF accessories.

• COMMERCIAL
• US

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Webshops

Ham Radio Outlet

Large US amateur-radio retailer.

• COMMERCIAL
• US

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Webshops

GigaParts

Amateur, electronics and communications equipment.

• COMMERCIAL
• US

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