2 Meter Band Guide: 144 MHz FM, SSB and Calling Frequencies

The 2 meter band is where most operators make their first local contact. It is the home of handheld radios, repeaters and nets, but it is also a serious weak-signal band, where small beams and sensitive receivers reach hundreds of kilometres when the atmosphere cooperates. This guide covers the band limits in the three ITU regions, the calling frequencies you need to know, how repeaters and simplex work, which digital and weak-signal modes live here, what kinds of propagation to expect and what antennas make sense. Use it to move beyond the local repeater and to find the activity that is already happening around 144 MHz in your area.

Band Limits and Where to Operate

The band lies around 144 MHz, which gives a wavelength of roughly two metres, hence the name. The allocation differs by region. In ITU Region 1, which covers Europe, Africa and northern Asia, amateurs have 144 to 146 MHz. In Region 2, the Americas, the allocation is 144 to 148 MHz, and Region 3 is largely the same as Region 2 with some national differences. National regulators then divide the space by mode, license class and power limits, so always check the rules that apply to you. The encyclopedia article summarises the allocations, and the IARU Region 1 site publishes the European band plan.

The band plan is built around the idea of keeping modes apart. The lowest part is reserved for the weak-signal modes: moonbounce, then CW, then single sideband. Higher up are the FM simplex channels, the repeater inputs and outputs, a satellite segment and the packet and position-reporting channels. That layout protects the very weak signals at the bottom from the strong FM signals above. When you tune around, stay inside the segment that matches your mode.

Calling Frequencies You Should Know

A calling frequency is a meeting place. You tune there, listen and call CQ if you hear nothing, and then you move to a nearby frequency once you have made contact so that the calling channel stays free. The most used channels are in the table. Check your national band plan, because the exact values and conventions differ between regions and can change.

Why Upper Sideband

On VHF and UHF the convention is upper sideband for all SSB, unlike the HF bands below 10 MHz where lower sideband is customary. Our article on choosing between USB and LSB explains the history, and on 2 metres you simply use USB.

FM, Repeaters and Simplex

Most activity on 144 MHz is narrow-band FM. A handheld with a small antenna is enough to talk through a repeater several tens of kilometres away if the repeater is on a hill, and between two handhelds in the open on simplex you may expect a few kilometres to a few tens of kilometres, depending on terrain. Repeaters receive on one frequency and transmit on another, separated by an offset. On 2 metres the offset is usually 600 kHz, and the direction depends on the part of the band and on the country. Many repeaters also require a sub-audible tone to open the squelch, which our guide to CTCSS tones and DCS codes covers.

Simplex is the neglected part of the band. It does not depend on infrastructure, it works in an emergency when the repeater loses power and it is where you practise the skills that make you useful in the field. The basics of both are in our guide to VHF and UHF simplex and repeater operating. If you hold a handheld, program the national calling channel into memory, add the repeaters you can reach and listen occasionally for a call.

FM channels are spaced either 15 kHz or 20 kHz apart, depending on the region, and the modulation is narrow, so a deviation that is too high will splatter onto the next channel. Speak close to the microphone at normal volume and do not shout. Keep calls brief, give your call sign at the start and the end and avoid long monologues on a calling channel.

Weak-Signal Work: SSB, CW and Digital

The lower end of the band is where the dedicated VHF operators spend their time. They use horizontal polarisation, so beams are mounted with the elements horizontal, and they use SSB and CW because these modes have a narrow bandwidth and need far less signal than FM to produce a readable copy. The difference between a good signal on a repeater and a barely audible one on sideband can be 15 decibels or more in favour of sideband.

Digital weak-signal modes have changed the band. FT8 on 144.174 MHz makes contacts possible when conditions are only slightly better than normal, and the meteor scatter mode MSK144 lets two stations exchange short messages through brief reflections from meteor trails. Our guide to meteor scatter with MSK144 explains the schedules and software settings. For the wider picture of modes on the band, remember that the same computer, sound interface and clock accuracy that you use for HF are needed here.

Contests and Activity Nights

Weak-signal activity is concentrated in time. Many regions run regular activity evenings, typically weekly, when stations point their beams and call CQ on the calling frequencies. National and international VHF contests give a burst of activity several times a year, and they are the best chance to work new grid squares. If you hear nothing on a given evening, it often means that nobody is there, not that your station is deaf.

Propagation on 144 MHz

At 144 MHz the signal normally travels in a line of sight, slightly extended by the bending of the atmosphere, which gives a radio horizon about 15 percent beyond the optical horizon. Several mechanisms stretch that distance far beyond normal.

• Tropospheric enhancement. A temperature inversion can bend signals so that you hear stations 500 kilometres or more away for hours. The article on tropospheric ducting explains how to recognise and use it.
• Sporadic E. Small clouds of ionisation in the E layer can reflect 144 MHz signals over distances of 1,000 to 2,300 kilometres. They are rarer on 2 metres than on 6 metres and are mostly seen in the summer season.
• Meteor scatter. Ionised trails left by meteors reflect signals for fractions of a second to a few seconds, and activity peaks during major meteor showers.
• Aurora. During geomagnetic storms, signals bounce off the aurora at high latitudes, and they sound rough and fluttery.
• Moonbounce. A station with a large array and a good receiver can reflect signals off the Moon. It is a specialist activity but is the farthest reach of the band.

Unlike HF, the sunspot cycle has only a small effect on 144 MHz propagation, so the band is interesting at any time in the cycle. The seasons and the weather matter much more than the sun.

Antennas and Equipment

For FM and local work, a vertical antenna is the standard, because handhelds and mobile antennas are vertical and matched polarisation gives the best signal. A quarter-wave ground plane is about 49 to 50 centimetres long, which is why a magnetic mount whip is so common on cars. At home, a collinear or a J-pole raised well above the roof clears obstructions, and our guide to 2 metre J-pole, collinear and ground plane antennas shows how to build and choose them.

For weak-signal work, use a horizontal Yagi with a boom length of two to four metres, which gives roughly 9 to 12 dBi of gain, and mount it as high as you can. A rotator allows you to point at the station you want and to peak the signal. The feed line matters more than at HF, because loss rises with frequency. A run of 20 metres of thin coax may lose several decibels at 144 MHz, which can eat the gain of an entire antenna. Use low-loss cable, keep the run short and weatherproof every connector.

A preamplifier mounted at the antenna can improve the noise figure of the whole receiving chain, but only if the receiver is not already limited by external noise at your location. Try the simple things first: a better antenna, better cable and a quieter location.

Satellites and the Space Station

The 145.800 to 146.000 MHz segment is set aside for amateur satellites in the IARU plan, and the downlinks of many satellites and of the amateur radio station on the International Space Station are heard here. An FM satellite pass lasts roughly ten minutes, the signals are fast moving because of Doppler shift and a handheld with a simple directional antenna is enough to hear them. The 2 meter band is therefore also a gateway to satellite operating, and the skills you learn pointing a small Yagi by hand carry over directly.

A Simple First-Month Plan

If you are new to the band, do not try everything at once. In the first week, program the calling channel and two local repeaters into your radio, listen and make a few calls. In the second week, find the local net and check in, which gives you practice and introduces you to the active operators. In the third week, try simplex with a friend at a distance of a few kilometres, using low power and moving to higher ground to see what changes. In the fourth week, tune across the SSB segment in the evening or at a weekend, listen for CW and sideband signals and note which direction they come from. After a month you will know the local activity, you will know what your station can do and you will have a clear idea of what to improve first, whether it is the antenna, the cable or your operating habits.

Common Mistakes

• Calling on the calling channel for a long chat. Make contact, then move away so others can use it.
• Using vertical polarisation for weak-signal work. The mismatch with horizontal stations costs a large share of the signal.
• Ignoring the band plan. FM signals in the CW and SSB segment drown out weak stations.
• Long runs of thin coax. The loss can exceed the gain of your antenna.
• Never listening on simplex. The band appears empty if you only check the repeaters.
• Forgetting the tone. A repeater that does not open often needs the correct sub-audible tone.

The Bottom Line

The 2 meter band offers the easiest entry to VHF and the longest road to learning. You can start with a handheld on a local repeater, move to simplex on the national calling channel, then add a horizontal antenna and try sideband, CW, FT8 and meteor scatter on the weak-signal segment. Know your regional limits and the calling frequencies, respect the band plan, use the right polarisation for the mode and watch for tropospheric and sporadic E openings. A modest station placed high and fed with good cable will bring a surprising number of contacts, and an evening spent listening to the sideband segment can show how much activity exists beyond the repeaters.

Frequently Asked Questions

What frequencies are on the 2 meter band?

The band is 144 to 146 MHz in Europe and Africa, and 144 to 148 MHz in the Americas. Many other countries follow one or the other, with national variations.

What is the 2 meter calling frequency?

In the United States the FM simplex calling channel is 146.520 MHz and the SSB calling frequency is 144.200 MHz. In Europe, 145.500 MHz is the FM calling channel and 144.300 MHz is the SSB centre of activity.

How far can I talk on 2 meters?

With a handheld, a few kilometres on simplex and perhaps tens of kilometres through a hilltop repeater. With a good antenna and sideband, hundreds of kilometres are possible during tropospheric openings.

Should I use horizontal or vertical polarisation?

Use vertical for FM and repeater work, and horizontal for SSB, CW and digital weak-signal activity. Matching the polarisation of the other station matters at VHF.

Which sideband is used on 2 meters?

Upper sideband, as on all VHF and UHF bands. Lower sideband is used on HF bands below 10 MHz.

Do I need a license for the 2 meter band?

Yes. Operating on any amateur band requires a license, and the entry-level class in most countries includes 144 MHz. Check the privileges for your own class.