How to align a dish for a mobile home or RV setup

SatPointer is a free, web-based pointing tool operated by TotalSat Limited. From a phone or laptop, it combines Google Maps, satellite orbital data and the installation location to calculate a dish’s azimuth, elevation and skew for reception, uplink, downlink or mobile satellite links. That makes it useful whether an RV carries a fixed television aerial, a portable internet terminal or a dish that moves to each campsite.

The important distinction is between knowing where to point and having a dish that stays stable enough to receive. A precise map pin, an unobstructed view and a secured mount matter as much as the number on screen. Plan before travel, check again when the vehicle changes position, and treat the calculated direction as a reference rather than a replacement for signal testing.

Plan the installation before you leave

Begin in the browser and choose the satellite or link type required by your service. For a fixed installation, use the vehicle’s exact parked position. On the Google map, zoom in far enough to distinguish roof edges, air-conditioning units, awnings and solar panels, then place the pin as close as practical to the dish, not merely the suburb.

Use the SatPointer satellite database to check beam coverage and estimated dish size before buying equipment. A free-to-air receiver, subscription television box and data terminal may use different satellites or beam areas. For Australian services, copy the satellite name and orbital position from the receiver’s menu rather than relying on a broadcaster name.

Location changes the geometry. The same satellite can sit several degrees farther east when viewed from Perth than Sydney, while travel north toward Darwin or Broome raises its elevation and changes the horizon. Enter a new point for each regular stop if the dish is portable; for a fixed roof installation, recalculate at the main destinations.

Choose the satellite that matches the service

Select the link direction before reading the angles. A receiving dish needs a clear path from the satellite to its feed, while an uplink or downlink antenna must satisfy the service’s transmission requirements and may use a different feed arrangement. For a moving setup, check whether the selected satellite remains visible for the whole session; low-orbit services can require a different pointing strategy.

Dish diameter is a practical constraint, not a detail to leave until installation day. Compare the database estimate with the gain and coverage available in your Australian location. Australian-market caravans and motorhomes often have a 12-volt supply and an existing roof penetration, so a compact offset-fed unit may suit television, while a rural internet terminal may need a larger aperture or clearer mounting point.

The Yamal 601 setup guide provides a worked example of choosing a service, placing the position and recording pointing values. Its location is not Australian, but the sequence transfers: confirm the orbital entry, calculate from the actual dish site, make the mount repeatable, then verify the result at the receiver. Do not copy another traveller’s bearings to a different campsite.

Calculate the pointing angles at the exact dish position

Read the outputs as three separate instructions. Azimuth is the compass direction of the antenna face, elevation is its angle above the true horizon, and skew describes feed or dish rotation for the expected polarisation. SatPointer derives these values from the orbital position and selected site. Record the reference as true north, then allow for any offset built into the mast or bracket instead of assuming the dish centre is its pointing point.

For geostationary satellites, most Australian installations look broadly toward the northern sky, though the exact direction changes with latitude and longitude. Other satellites may require an easterly or westerly view, and high-rise buildings or trees can remove the needed clearance. Use a compass and inclinometer for the coarse position, then let the receiver’s quality meter guide the fine adjustment; phone compasses can be distorted by metal.

A useful reference for the workflow is the Alcomsat alignment example, which shows how location, orbital data and physical settings come together. Use it to understand the order of operations, not its Algerian or North African bearing, which will be wrong for Australia. Recalculate every value for the actual campsite and measure from the finished mount.

Mount the dish so the vehicle can move safely

Design the mount around movement. A roof aerial needs a rigid base, short mast and vibration-resistant fixings; a portable unit needs a stand that cannot tip on uneven ground. Check roof load, avoid drainage and electrical routes, and keep the dish clear of air conditioners, vents, awnings and rack feet. A dish that works while stationary can lose alignment when the vehicle encounters corrugations and potholes.

Never climb onto a hot metal roof or work near overhead power lines without suitable precautions. Secure the ladder, have another person present where possible, and postpone roof work in strong winds. Keep the feed arm and cable from acting as a wind catch. Follow the manufacturer’s grounding instructions, use a rated cable entry, and protect both the 240-volt hook-up and the vehicle’s 12-volt circuit.

Photograph the final position, bracket and cable route, and record every setting. If the installation was planned with remote help, a Mac can support a video check-in; this review of iPhone webcam apps explains how an iPhone can serve as a webcam for a Mac. The video cannot replace a signal meter, but it can show an installer whether the physical view is obstructed.

Test and fine-tune the signal

Start with a coarse physical setting, then make small corrections. Set azimuth and elevation to the calculated values, level the dish, adjust the feed to the indicated skew, and tighten the lock only after the receiver registers a signal. Change one adjustment at a time and note which movement improves quality. A strong reading with a poor picture can indicate interference or incorrect skew rather than poor aim.

Use the receiver menus to check strength, quality, transponder and error rate where available. Compare them with expected values for the selected service, then take a short drive if the installation is permanent. Movement can reveal a resonant bracket, cable strain or loose fastener that a static test misses. Replace suspect parts and repeat the test instead of compensating with an extreme offset.

Documentation helps when a family member, caravan-club member or installer must repeat the procedure. If the alignment was recorded from several angles, multicam interview editing describes combining multiple camera views, a method that can be adapted to review roof access, bracket positions and cable runs. Label each file with the location, satellite and date.

Make the setup travel-ready

Before departure, save the values for home and plan to recalculate at each new stop, especially on routes such as Melbourne to Cairns or along the Stuart Highway. A fixed television aerial may tolerate small bearing changes, but a narrow-beam or mobile service may not. Confirm that the chosen satellite is technically available at the destination, and do not rely on a cached map pin from the previous campsite.

Local travel conditions belong in the plan. Australian caravans often cover long distances between towns, sometimes behind road trains, and 4G or 5G coverage can be inconsistent beyond regional centres. Free-camping areas may have time limits or vehicle restrictions, while booked caravan parks can limit dish deployment. Observe fire bans, rubbish and wildlife rules, and use designated ground sites where guy lines or generators could affect others.

Travel bloggers, RV clubs and caravan forums can also publish a customisable SatPointer widget so visitors calculate a pointing direction from their own location. That gives everyone a shared reference without copying one set of angles to every campsite.

Open SatPointer now, select the satellite your receiver actually uses and save the intended dish coordinates. Run the calculation for your first Australian stop, then repeat the process before each journey.