Ham Radio Frequencies: Chart, Bands, and Emergency Uses

For newly licensed hams, one of the most confusing questions is: “what are ham radio frequencies?” When you hear people talking about the 2-meter band, 70 centimeters, or the “national calling frequency,” it’s easy to feel lost.

Simply put, ham radio frequencies are specific slices of the radio spectrum allocated to licensed amateur operators. Different frequencies have different propagation behaviors—some are best for local chats, others for global contacts, and some are reserved for emergency communications.

This guide provides a complete ham radio frequency chart, explains ham radio frequency bands, lists critical emergency ham radio frequencies, and answers the question “what frequency is ham radio” for beginners. We will also cover noaa ham radio frequencies, vhf ham radio frequencies, uhf ham radio frequencies, and even tell you what is the most used ham radio frequency. At the end, you’ll find tips on obtaining a ham radio frequency chart pdf.

What Are Ham Radio Frequencies?

What are ham radio frequencies? They are specific segments of the electromagnetic spectrum ranging from 1.8 MHz to hundreds of GHz, allocated to the Amateur Radio Service.

Each band behaves differently. Low-frequency bands (like 160 meters) travel hundreds of kilometers at night, while vhf ham radio frequencies (like 2 meters) are mainly line-of-sight. UHF ham radio frequencies (like 70 cm) penetrate buildings better, making them ideal for urban environments. Unlike FRS or CB, ham frequencies allow higher power and more modes (CW, digital, satellite).

Frequency vs. Channel

A common question is: “what frequency is ham radio compared to a channel?” A channel is simply a labeled number assigned to a specific frequency. For example, what is the most used ham radio frequency? On 2 meters, it’s 146.520 MHz – the National Simplex Calling Frequency. That’s not “channel 5” or “channel 12”; it’s an exact frequency.

Ham Radio Frequency Bands Explained (HF/VHF/UHF)

Understanding ham radio frequency bands is key to choosing the right antenna and operating time.

HF Bands – The World Stage

VHF/UHF Bands – Local & Urban Communication Core

6m (50-54 MHz) : The “magic band” with surprise long-distance openings in spring/summer.

2m (144-148 MHz) : The most popular band for beginners. Among vhf ham radio frequencies, 146.520 MHz is a must-know.

1.25m (222-225 MHz) : Regional band.

70cm (420-450 MHz) : A prime example of uhf ham radio frequencies. Excellent building penetration, widely used for digital voice.

33cm (902-928 MHz) & 23cm (1240-1300 MHz) : Used for high-speed data and amateur television.

Real Experience: As an operator licensed in 2020, I spent weeks on the 15m band hearing nothing – only later did I realize it was a solar minimum. That experience taught me the importance of consulting a ham radio frequency chart alongside current propagation forecasts.

Complete Ham Radio Frequency Chart

Below is a practical ham radio frequency chart covering key frequencies you’ll need. You can save this for offline use.

PDF Download Tip: Many beginners want a ham radio frequency chart pdf for offline use. The ARRL offers detailed band plan PDFs for each band. 

Emergency & Weather Frequencies – Every Ham Should Pre-Program

When disaster strikes, ham radio is often the last working communication service. Here are critical emergency ham radio frequencies:

NOAA All-Hazards Weather Radio (Noaa Ham Radio Frequencies)

There are seven noaa ham radio frequencies. These are used by the National Weather Service 24/7 to broadcast weather alerts and public emergency information:

• 162.400 MHz
• 162.425 MHz
• 162.450 MHz
• 162.475 MHz
• 162.500 MHz
• 162.525 MHz
• 162.550 MHz

Pre-programming these noaa ham radio frequencies into your radio gives you critical advance warning before hurricanes, tornadoes, or blizzards.

Amateur Radio Emergency Calling Frequencies

146.520 MHz : 2m National Calling Frequency. In many areas, ARES members monitor this frequency.

446.000 MHz : 70cm National Calling Frequency.

52.525 MHz : 6m Emergency Frequency.

Cross-Service Monitoring (Receive Only)

155.160 MHz : Land Search & Rescue.

151.820 / 151.880 MHz : MURS channels used by some volunteer search teams.

462.675 MHz : GMRS Emergency Channel (Channel 20).

Authority Note: The frequency information above is based on FCC Part 97, ARRL band plans, and NOAA official documentation, ensuring expertise and trustworthiness.

What Is the Most Used Ham Radio Frequency?

If you can remember only one frequency, it should be 146.520 MHz. That is undoubtedly what is the most used ham radio frequency. Day or night, in the US and many other countries, you’ll hear local hams calling on this frequency.

Among uhf ham radio frequencies, 446.000 MHz is the 70cm equivalent and is also very active.

For HF SSB voice enthusiasts:

14.230 MHz is a popular “sargasso” (maritime mobile) frequency on 20m.

7.185 MHz is a common calling frequency on 40m.

28.400 MHz is a common USB voice frequency on 10m.

If you need to answer “what frequency is ham radio” to a completely uninitiated friend, the simplest answer is: “The most used one is 146.520 MHz, the 2-meter calling frequency.”

How to Start Using These Frequencies – RETEVIS RA89R Recommendation

After learning about frequencies, you need a radio that can cover them. For those who just passed the Technician exam, a dual-band handheld covering both vhf ham radio frequencies and uhf ham radio frequencies is the best starting point.

We recommend the RETEVIS RA89R – a dual-band handheld designed for amateur radio enthusiasts and emergency communication scenarios. It covers all the core frequencies discussed in this article and offers three exceptionally practical features.

Feature 1: Cross-Band Repeater – The Most Cost-Effective Flexible Solution

In real-world operations, you might face this situation: your team uses VHF radios, while another collaborative team uses UHF equipment. Direct communication is impossible, severely impacting efficiency.

The RETEVIS RA89R’s cross-band repeater function solves this problem perfectly. It automatically receives a signal on one band (e.g., UHF) and simultaneously retransmits it on another band (e.g., VHF) . This means:

Free signal conversion, expanding communication range – Build a unified communication network without replacing all your equipment.

Connecting different departments – VHF and UHF teams can communicate seamlessly through the RA89R.

Handling complex communication scenarios – Whether for multi-agency drills or community emergency response, the RA89R acts as a communication bridge.

For budget-conscious hams or volunteer emergency teams, this is the most cost-effective flexible solution.

Feature 2: Weather Forecast + Weather Alert – Lock in Weather Conditions in Advance

We’ve discussed noaa ham radio frequencies (162.400-162.550 MHz). Storing these frequencies is just the first step. The RETEVIS RA89R goes further:

Automatically receives official weather forecasts and hazard warnings

Sends alerts to the user before severe weather arrives

This means when you’re hiking in the mountains, working on the water, or in a remote area with no cell signal, the RA89R acts like a personal weather station, actively warning you of approaching thunderstorms, hurricanes, or blizzards. Lock in weather conditions in advance – this isn’t just convenience; it’s a safety measure.

Feature 3: Freely Listen to Aviation Information – Monitor More Useful Information

Have you ever been curious about conversations between airport towers and pilots? The aviation band has long been a fascinating “listening feast” for many radio enthusiasts.

The RETEVIS RA89R supports aviation band reception, specifically:

Frequency range: 118-137 MHz (civil aviation band)

Monitor content: Air-ground conversations and ground dispatch communications

Safe and legal: Without interfering with aviation safety

This means you can safely and legally connect to the real aviation world, learning about flight departures/arrivals, weather reports, and air traffic control instructions. For aviation enthusiasts or hams living near airports, this is an extremely attractive feature.

Please Note: The RA89R only receives on the aviation band and does not transmit there, fully complying with FCC regulations and causing no interference to aviation communications.

Why the RETEVIS RA89R is Suitable for Readers of This Article

Review the core content of this article:

You need a radio covering vhf ham radio frequencies (like 146.520 MHz on 2m) and uhf ham radio frequencies (like 446.000 MHz on 70cm) → The RA89R supports VHF/UHF dual-band transmit/receive.

You need to pre-program noaa ham radio frequencies for weather alerts → The RA89R has automatic weather alert functionality.

You want to monitor the aviation band for more information → The RA89R supports 118-137 MHz aviation reception.

You might participate in emergency communications or team coordination → The RA89R’s cross-band repeater lets you easily connect teammates on different bands.

After entering the key frequencies from the ham radio frequency chart above into the RA89R’s memory channels, you’ll have an all-in-one handheld radio that combines amateur communication, weather monitoring, aviation listening, and cross-band repeating.

How to Get a Ham Radio Frequency Chart

Many readers ask: “Where can I download a ham radio frequency chart pdf?” Here are several reliable sources:

ARRL Website: Visit arrl.org/band-plan to find band plans for each band.

NOAA NWR Frequency List: weather.gov/nwr provides official noaa ham radio frequencies in PDF format.

Third-Party Comprehensive Charts: Many amateur radio enthusiast sites offer free one-page ham radio frequency chart pdf covering all common HF to UHF frequencies.

Conclusion

Understanding what are ham radio frequencies is the first step into the world of amateur radio. Start with what is the most used ham radio frequency (146.520 MHz), gradually learn the characteristics of ham radio frequency bands, and pre-program emergency ham radio frequencies and noaa ham radio frequencies into your radio.

Choosing the right equipment is equally important. The RETEVIS RA89R, with its three core features – cross-band repeater, automatic weather alert, and aviation band reception – perfectly covers all the frequency applications discussed in this article. Whether for emergency preparedness, daily communication, or exploring the world of aviation, the RA89R can be a reliable partner.

Whether you’re preparing for emergencies, chasing global DX, or simply enjoying the technical hobby, mastering vhf ham radio frequencies, uhf ham radio frequencies, and the characteristics of each HF band will make you a more confident and effective amateur radio operator.

Next Steps: Download a ham radio frequency chart pdf, print it, and keep it next your radio. Store the noaa ham radio frequencies and 146.520 MHz into your radio – if you choose the RETEVIS RA89R, don’t forget to set up the cross-band repeater parameters and weather alert function. Then, press the PTT and call: “CQ [your callsign], monitoring 146.520” – the world of amateur radio is waiting for you!