If you're studying for the technician exam, or you just unboxed your first handheld and you're staring at a blank channel screen, ham radio frequencies can feel like a wall of numbers. They aren't. Once you understand how the FCC carves up the spectrum, where licensed amateurs are allowed to transmit, and which channels people actually use day to day, the whole band plan starts to make sense.
This guide is built for US operators. We'll walk through every major amateur band from 160 meters up to microwave, show you exactly which slices a Technician class licensee can use, list the most common simplex frequencies on 2m and 70cm, cover repeater offsets and PL tones, and drop in the ISS downlink frequency so you can listen for astronauts on a $30 radio.
You don't need to memorize all of it before your first contact. The goal here is to give you a working mental map — enough that when you hear someone mention 146.520 or 14.300, you know what's happening on those frequencies and whether you're allowed to join in.
The most-used ham radio frequency in the US is 146.520 MHz — the 2-meter FM simplex national calling frequency. Every Technician licensee can transmit there with a basic handheld. Other heavy hitters: 446.000 MHz (70cm calling), 145.800 MHz (ISS voice downlink), and 14.300 MHz (HF maritime emergency net).
Before you key up, you need a callsign. The FCC issues those after you pass a 35-question multiple-choice test, and the entry-level credential is the Technician class. If you haven't started studying yet, our ham radio license walkthrough explains the three license tiers and what each one unlocks. To prep specifically for the entry exam, the ham radio technician test hub has every question pool topic broken down by element.
One thing worth saying upfront: a lot of frequencies you'll see written down are conventions, not laws. The FCC tells you what slices of spectrum are legal for amateurs. The community tells you which exact channels people actually park on. Both matter.
Amateur radio operates on bands the FCC has set aside under Part 97 of its rules. "Bands" just means a continuous chunk of frequencies — for example, the 2m band runs from 144.000 to 148.000 MHz in the US. Inside each band, voluntary band plans split the space into segments for CW, digital modes, SSB voice, FM voice, satellites, and repeaters. Those plans aren't law, but ignore them and you'll step on someone's QSO and earn a quick reputation.
The US is in ITU Region 2, which matters because some band edges differ from Europe (Region 1) and Asia/Pacific (Region 3). When you read frequency lists from foreign sources, double-check that the segment is actually legal here. A frequency that's perfectly fine for a German ham on 70cm may sit outside the US allocation entirely.
Bands are also referred to by their wavelength in meters or centimeters — that's where names like "2 meters" and "70 centimeters" come from. The math is simple: wavelength in meters equals 300 divided by frequency in MHz. So 146 MHz works out to about 2.05 meters, which we round to 2m. The wavelength dictates antenna size, propagation behavior, and a lot of the personality of each band.
Notice the WARC bands — 30m, 17m, and 12m. These were added in 1979 at the World Administrative Radio Conference, and by gentlemen's agreement no contests run there. They're a quiet refuge when 20m is screaming with a contest weekend, and propagation is often excellent.
Each band behaves differently. HF bands bounce off the ionosphere and reach the other side of the world. VHF and UHF are mostly line-of-sight, but with a repeater on a hill you can cover hundreds of square miles from a 5-watt handheld.
The 6m band is the "magic band" — usually quiet, then a sporadic E opening lights it up and you're working stations 1,500 miles away on a wire dipole. 10m is similar; during sunspot peaks it opens worldwide for hours at a time, and that's exactly the slice Technicians get full phone privileges on. Time your studying right and you'll have your license in hand for the next solar peak.
As a Technician, your HF privileges are intentionally narrow — you get a slice of 10 meters and small CW windows on 80m, 40m, and 15m.
10m phone is where Techs get their first taste of long-distance voice contacts during sunspot peaks. 28.400 MHz is a popular Tech calling spot when 10m is open.
This is the Tech's home turf. You get every privilege on every VHF amateur band, up to 1500 watts.
Your $30 Baofeng or $200 Yaesu handheld covers 2m and 70cm out of the box, which is why most new hams start there.
Same story above 300 MHz: full Technician privileges on every band.
The 70cm band carries the second-busiest repeater traffic in the US and is your ISS cross-band repeater uplink (when active).
Without upgrading to General or Extra, you can't transmit on:
You can listen to anything, anywhere on the spectrum — that's not licensed activity. Only transmitting is regulated.
Most new Techs spend 90% of their air time on 2m and 70cm FM, talking through repeaters and on the simplex calling frequencies. Let's look at those next, because they're the channels you'll actually program into your radio first.
The list below shows the most-used frequencies a Technician will encounter day to day. Print it, screenshot it, tape it inside the lid of your radio bag — whatever works. After a few weeks on the air these become muscle memory.
Critical distinction: ham simplex is not the same as MURS, GMRS, or FRS. MURS gives you five VHF channels around 151-154 MHz with no license required. FRS bubble-pack walkie-talkies live up at 462-467 MHz. Even though some Baofeng radios can transmit on those frequencies, doing so without the right license violates FCC rules. Stay inside the amateur bands when you're using your Technician privileges.
GMRS is a separate beast — it shares some frequencies with FRS but allows higher power and repeaters with a $35 family-wide FCC license, no test required. Some hams pick up a GMRS license alongside their amateur ticket so the rest of the family can talk on basic radios without studying for a Tech exam.
Once you've got those simplex channels memorized, the next layer is repeaters. A repeater receives your weak signal on one frequency, then retransmits it at high power from a tower or mountaintop. Suddenly your 5-watt handheld covers 50 miles instead of 5.
Most modern repeaters require a CTCSS tone — short for Continuous Tone-Coded Squelch System, often called a PL tone (Motorola's trademark, "Private Line"). Your radio sends a sub-audible tone like 100.0 Hz or 131.8 Hz along with your voice, and the repeater only opens up when it hears the right tone.
This keeps interference from distant repeaters on the same frequency from triggering yours. It's also why a repeater that sounds dead may actually be wide open — your radio just isn't sending the tone it expects.
To program a repeater into your radio, you need four pieces of information: the output frequency (what you receive on), the offset direction and amount, the CTCSS tone the repeater requires, and the mode (FM is standard for analog). Repeaterbook.com is the go-to free database — type in your zip code and it lists every nearby machine with all four values pre-filled.
HF voice contacts use SSB (single sideband), not FM. A handful of frequencies act as informal national calling channels — places where ops park to look for contacts or coordinate during emergencies. Knowing them helps you tune around productively instead of spinning the VFO randomly.
These aren't FCC-mandated — they're community conventions, but everybody respects them.
If something bad happens locally and the cell network is down, here's where to listen and where to call.
Note: 121.500 MHz is the international aviation emergency frequency — not amateur. Listening is fine; transmitting there as a ham is illegal.
DX (long distance) operators camp at the low end of each phone segment. During a major DXpedition, you'll hear them split-frequency — listening 5-10 kHz up from where they transmit.
Major contests fill 20m, 40m, and 15m almost edge to edge on the first weekends of major events (CQ WW, ARRL DX, IARU). The WARC bands stay quiet during contests.
One of the coolest things you can do as a brand-new Tech is talk through the International Space Station. The ISS carries an amateur radio station — call sign NA1SS in the US, with various national callsigns when crew members from other countries are aboard.
When the station is in voice mode and a ham astronaut is on board with free time, they sometimes work the air. Far more often, the rig runs in APRS digipeater mode or as a cross-band FM voice repeater. Either way, you're using the same handheld you'd use for a local repeater contact.
To work the ISS, you need to know when it's overhead. Free apps like ISS Detector or Heavens Above will give you pass times and elevations. A pass lasts roughly 5-10 minutes from horizon to horizon.
Tune your radio to 145.800 MHz on FM with no offset, point a small Yagi (or even a rubber duck antenna) upward, and listen. If the cross-band repeater is active, you transmit on 437.800 MHz with a 67.0 Hz tone and listen on 145.990 MHz — and yes, you can talk to other hams across a continent through the ISS with a 5-watt handheld.
Ready to test what you've learned so far? Try a short practice run with our quiz set below, or download the printable ham radio technician practice test PDF to study offline.
Here's a question that trips up new operators: "What's the difference between an FCC allocation and a band plan?" The FCC tells you the legal edges — what you're allowed to transmit and at what power.
The band plan is the voluntary etiquette that splits each band into segments by mode. For example, the 2m FCC allocation is 144.000-148.000 MHz, but the band plan reserves 144.000-144.100 for CW, 144.100-144.275 for SSB and weak-signal, 144.275-144.300 for beacons, 144.300-144.500 for satellites, and so on.
Transmitting FM voice in the SSB segment isn't illegal, but you'll instantly clash with ops trying to dig out 100-watt stations from 1,500 miles away on a yagi. The fix is simple: stick to the FM portions of the band (typically 145.500-145.800 for simplex experimentation and 146.400-148.000 for repeaters and the calling channel).
Power limits matter too. Technicians can run up to 1500 watts on most VHF/UHF bands and 200 watts on the limited HF segments. Realistically, almost no Tech ever runs more than 50 watts mobile or 100 watts at a base station. A 5-watt handheld through a decent antenna gets you into most local repeaters with audio to spare.
Use Repeaterbook.com or the ARRL Repeater Directory. Note the output frequency, offset direction, offset amount (usually -600 kHz for 2m, +5 MHz for 70cm), and the CTCSS tone.
Type the output frequency (the one printed in the directory) into your radio's VFO. That's what you receive on.
Choose negative for 2m repeaters in the 145 and lower 146 ranges, positive for 70cm and many upper-2m machines. Confirm the shift amount in the radio's menu.
Find the CTCSS tone setting and enter the value (e.g., 100.0 Hz). Make sure it's set to TX only — not TSQL — unless the repeater also transmits a tone.
Store the channel with a clear label like 'W1ABC 146.94'. Test by holding PTT briefly and listening for the squelch tail when you release.
Programming radio by radio gets old fast. Most operators graduate to a free utility called CHIRP that connects via a USB cable, downloads the existing channels, lets you edit them in a spreadsheet view, and uploads everything back.
CHIRP can also import a CSV file straight from Repeaterbook, so you can drop in every repeater within 50 miles of your home in about 60 seconds. The same code-plug technique works for road trips — pull every machine along your route, save it as a travel zone, and you'll always have something to listen to.
If you prefer video walkthroughs to text, our ham radio technician video questions library covers programming demos, antenna setup, and the question pool topics most likely to appear on your exam.
One last layer most new hams overlook: digital voice modes are eating into FM repeater traffic. DMR (Digital Mobile Radio), D-STAR, and Yaesu System Fusion all transmit voice as data packets, often linked to global networks like Brandmeister or DMR-MARC.
The frequencies are the same — 2m and 70cm bands — but the audio sounds robotic on an FM-only radio because it's encoded. If you scan a 70cm repeater and hear what sounds like a buzzy modem, that's digital voice. To listen or transmit, you need a radio that supports the specific protocol (an Anytone AT-D878 for DMR, an Icom ID-51 for D-STAR, a Yaesu FT-70D for Fusion).
The same goes for FT8, JS8, and other HF digital modes — they live in narrow segments like 14.074 MHz on 20m, 7.074 MHz on 40m, and 28.074 MHz on 10m (the only one a Technician can use). FT8 has eaten the SSB phone segments alive in recent years; it works at signal levels well below what your ear could decode.
You don't need a digital radio to start out, and most new operators ignore digital modes for the first year. Get comfortable on FM, learn the local repeater culture, and add complexity when you actually want it. The hobby is wide enough that you can spend decades exploring just one corner of it.
If you tape that to the inside of your go-bag and add the local repeater output frequencies for your county, you'll be 95% covered for normal day-to-day ham operation and any realistic emergency scenario. For the remaining 5%, your radio's scan function and a printed copy of the ARRL band plan handle the edge cases.
You don't need to memorize every frequency in the question pool to pass the technician exam, but understanding which bands you'll actually use, what the popular calling channels are, and how repeater offsets work makes everything else easier to retain.
If you haven't taken the plunge yet, here's how to get a ham radio license — the cost is about $35 for the FCC fee plus a small exam session fee, and the test itself is 35 multiple-choice questions you can prep for in two to four weeks of evening study.
A few extra notes worth keeping in mind as you build your frequency reference. First, common ham radio frequencies for a Technician really do reduce to about a dozen channels you'll actually transmit on regularly — 146.520, 446.000, your two or three local repeater outputs, maybe 28.400 during a 10m opening, and the ISS frequencies if you're chasing satellites. Don't let a 600-page handbook intimidate you; the daily working set is small.
Second, the USA ham radio frequency chart you'll see printed by the ARRL is color-coded by license class. Yellow is Technician, red is General, blue is Extra. When you upgrade, the new color sections light up — and your band privileges expand dramatically. Many Techs upgrade to General within a year, mainly to unlock 20m and 40m phone for HF DX work.
Third, ham radio frequencies for prepping or SHTF use don't require any special list. The same 146.520 simplex calling frequency that's quiet on a Tuesday afternoon becomes the gathering point during a regional disaster. ARES and RACES nets activate on local repeaters, then drop to simplex if power fails to the repeater site. Your training-class study time is the same training that pays off in a real emergency.
Once your radio is programmed and you're confident on the calling frequencies, the best next step is just listening. Spend a week monitoring 146.520 MHz, your local 2m and 70cm repeaters, and the morning HF nets on 14.300 MHz if you have an SSB receiver.
You'll learn the local culture, the jargon, and the rhythm of how QSOs flow before you ever key up. Then make your first call — it's never as hard as you think, and the ham community welcomes new operators with surprising patience. Almost every veteran ham remembers their first contact, and most are happy to be on the other end of yours.