QRP Satellite Operations: Working Birds with 5 Watts

I do most of my satellite operating from a 6th floor condo in Ottawa with a handheld yagi and a radio putting out 5 watts. It works. Not just occasionally — reliably, on passes above about 15° elevation, with FM and SSB satellites alike. QRP satellite operation isn't a compromise; for portable work it's often the ideal approach.

Why QRP Works Well for Satellites

Satellite transponders are designed to be accessed by modest stations. The engineers who built SO-50, AO-91, FO-29, and RS-44 knew their users would be operating handheld radios and small yagis — not high-power base stations. The link budgets are calculated with this in mind.

There's also a practical reason to avoid high power: transponder capture. FM satellites use a capture-effect repeater, meaning a strong signal can dominate the transponder and prevent weaker stations from being heard. A 50-watt station with a big yagi on an FM satellite isn't just unnecessary — it's actively antisocial. The satellite community has a strong norm of using the minimum power needed to access the bird cleanly.

For linear transponder (SSB) satellites like FO-29 and RS-44, the situation is even clearer. The transponder has a fixed total power output shared across all signals in the passband. A station running high power forces the automatic gain control to reduce gain for everyone else. Again, 5 watts with a good antenna is the right approach.

Antenna Matters More Than Power

In satellite work, antenna gain has a much more significant impact on your link budget than transmit power. A 6 dBd yagi gives you the equivalent of multiplying your power by four — and it improves both transmit and receive simultaneously, while a power increase only helps transmit.

For portable QRP satellite work, the go-to antenna is the Arrow II — a handheld dual-band yagi with separate elements for 2m and 70cm on the same boom. It's lightweight, easy to point, and has been the standard for portable satellite work for decades. A homebrew 3-element yagi for each band works just as well at a fraction of the cost.

The antenna has two jobs: improving your transmit signal into the satellite, and — just as importantly — pulling the downlink out of the noise. A rubber duck on a handheld often works for high-elevation passes on strong FM satellites, but a small yagi opens up lower passes and makes SSB work practical.

The QRP Rig for Satellites

The Yaesu FT-818ND has become almost the standard portable satellite radio, and for good reason. It covers 2m and 70cm, puts out 6 watts, fits in a pocket, runs on batteries, and has a built-in TCXO for excellent frequency stability — important for SSB work where frequency accuracy matters. Split operation lets you set different VFO frequencies for uplink and downlink simultaneously.

Any modern dual-band handheld works for FM satellites. For SSB satellites, you need a radio that can operate SSB on VHF/UHF — this narrows the field considerably. The FT-818, IC-9700, and IC-705 are the most common choices. The IC-9700 is a full-featured base station; the IC-705 and FT-818 are the portable options.

Technique Tips for QRP Portable Work

Point the antenna before AOS. Know the AOS azimuth from Ham Sat Tracker and face that direction before the satellite rises. Starting to track from the beginning of the pass gives you more usable time and avoids scrambling to find the satellite after it's already up.

Elevation matters more than azimuth at TCA. Near TCA on a high-elevation pass, the satellite is nearly overhead and moving slowly in azimuth but the elevation changes quickly. Keep the antenna angled up appropriately — pointing at the horizon while the satellite is 60° high costs you significant signal.

Use AntTrack for real-time pointing guidance. Ham Sat Tracker's built-in antenna pointing tool uses your phone's compass and tilt sensor to show you where to point throughout the pass. For portable work where you're juggling a radio, a yagi, and a phone, having real-time azimuth and elevation guidance removes one variable from an already busy situation.

Keep a hand free. The classic satellite portable setup: radio in a chest harness or hanging from a neck strap, yagi in one hand, phone showing AntTrack in the other. Sounds awkward, works well once you've done it a few times.

Use the minimum power that gives a clean signal. Start at 1–2 watts on FM satellites and listen for your own downlink. If it's clean and others can hear you, you have enough power. Increase only if you're struggling on a low-elevation pass or there's QRM.

Portable Locations

One of the great advantages of QRP portable satellite work is flexibility. You're not tied to a fixed antenna installation. A parking garage rooftop, a hill, an open field — any clear sky horizon works. The satellite doesn't care that you're operating from a camp chair in a provincial park.

For condo and apartment operators, a balcony or rooftop access point is often enough. The key is clear sky in the direction of the pass — check the AOS azimuth and LOS azimuth from Ham Sat Tracker against what your location can actually see before committing to a pass.

Satellite operating rewards portable operation in a way that most other aspects of amateur radio don't. The combination of QRP power, a simple handheld yagi, a phone running Ham Sat Tracker, and a good overhead pass is genuinely one of the most satisfying experiences in the hobby.

73 de VE3AKK