Setting Up a Dish for Telesat Anik F3 at 118.7°W
Telesat Anik F3 occupies the geostationary orbital position 118.7°W, serving defined coverage areas from above the western hemisphere. A dish must have a clear line of sight to that position, so the first task is checking whether the satellite is physically visible from the intended installation site.
For readers in Australia, this check is especially important. Anik F3 is far beyond the western horizon from every Australian capital city. A dish installed in Sydney, Melbourne, Brisbane, Perth or Darwin cannot receive the satellite directly simply by changing the azimuth or using a larger reflector.
The procedure is still useful for Australian technicians, satellite enthusiasts and businesses handling equipment for a North American site. It also helps prevent a common mistake: confusing Anik F3 with a satellite serving Australia or assuming that a powerful LNB can overcome an impossible look angle.
Use the orbital position as a starting point, then confirm the satellite name, beam, frequency and service requirements with the network operator. Telesat can update payload use, while channel providers may require a particular polarisation, symbol rate or approved receiver.
| Location | Approximate longitude difference from 118.7°W | Direct reception from Anik F3 |
|---|---|---|
| Perth, Western Australia | About 123° | Below the horizon |
| Brisbane, Queensland | About 88° | Below the horizon |
| Sydney, New South Wales | About 133° | Below the horizon |
| Toronto, Canada | About 40° | Generally visible |
| Calgary, Canada | About 5° | High elevation and easily visible |
Identify the satellite and service
A satellite name and orbital slot are not interchangeable with a television package. Confirm that the required transmission is actually carried on Anik F3 and that the intended beam covers the receiving location. A satellite may carry different services on C-band, Ku-band or other payloads, with each beam having its own footprint.
SatPointer’s Anik satellite database can help compare orbital locations, beam information and estimated reflector sizes. Treat dish-size figures as planning guidance rather than a guarantee. Rain margin, antenna efficiency, feed compatibility and the required carrier quality can all change the practical result.
Before travelling to an installation site, collect the service provider’s current technical sheet. It should state the downlink frequency, polarisation, symbol rate, FEC or modulation, and any access-control requirements. A receiver that locks to the wrong transponder may show no useful service even when the dish is accurately aimed.
Check whether the satellite is visible from Australia
A geostationary satellite remains above the equator while appearing fixed in the sky. The receiver must be within the satellite’s line-of-sight footprint. From Australia, the difference between local longitudes and 118.7°W is so large that Anik F3 sits below the geometric horizon.
This is true even at Brisbane, Australia’s eastern side, where the longitude separation is roughly 88 degrees. The theoretical geostationary visibility limit is close to 81 degrees of separation for an observer near sea level, and the practical limit is tighter once terrain, buildings and atmospheric clearance are considered. Perth is closer to the relevant western side of Australia, yet it is still more than 120 degrees away in longitude.
No amount of dish adjustment can fix a below-horizon target. A larger dish improves signal collection from a visible satellite; it does not bend the radio path around the Earth. If the installation is genuinely in Australia, select a satellite whose orbital position and service footprint are suitable for the region.
Gather the location and equipment
For a legitimate Anik F3 installation, use the exact site address or GPS coordinates. The calculation depends on latitude and longitude, and a suburb-level estimate can be insufficient in hilly areas or near obstructions. A location in Toronto produces very different pointing angles from one in Vancouver or Calgary.
The hardware must match the transmission. Confirm the reflector diameter, LNB type, feed arrangement and polarisation adjustment. A universal Ku-band LNB commonly used for domestic satellite work may be unsuitable for a professional carrier, while a C-band feed requires a much larger dish and different mechanical spacing.
Inspect the mount before connecting the receiver. It should be fixed to a rigid pole, wall bracket or engineered platform, with no movement in wind. Australian installations often face strong sun, salt air near coastal suburbs and severe weather in northern areas such as Darwin or Cairns. Use corrosion-resistant fasteners and follow local building, electrical and working-at-height requirements.
Calculate azimuth, elevation and skew
Enter the installation coordinates and 118.7°W into a reliable pointing calculator. The result should include azimuth, elevation and LNB skew. Azimuth may be expressed as true bearing measured clockwise from north, while a handheld compass normally indicates magnetic north.
Magnetic variation differs across Australia and changes over time. It can be several degrees in some areas, so do not transfer a true azimuth directly to a compass without applying the local correction. Metal roofs, vehicles and steelwork can also disturb a compass reading. A clear sightline and a properly calibrated digital inclinometer are valuable during setup.
Elevation is the angle above the local horizon. Check the result against nearby trees, ridges and buildings, remembering that a satellite dish’s face does not always point in the same visual direction as its radio axis. Offset dishes appear to point higher or lower than the actual incoming signal angle, so use the mount scale only as an initial reference.
Align the reflector from a suitable site
Set the mast perfectly plumb before adjusting the dish. A tilted mast makes the elevation and azimuth scales unreliable and causes the reflector to describe an unexpected arc during fine alignment. Tighten the mount enough to hold position while still allowing controlled movement.
Set the approximate azimuth and elevation, connect the LNB and receiver, then tune to a known active transponder. Make small horizontal movements and pause after each adjustment because receivers and signal meters can take time to respond. Once a carrier appears, adjust elevation in similarly small steps.
Peak the signal using quality or carrier-to-noise readings rather than signal strength alone. Signal strength can indicate that the receiver is seeing noise or a neighbouring satellite. Finally, rotate the LNB slightly to optimise polarisation, then tighten all hardware without allowing the reflector to shift.
Confirm the signal and troubleshoot faults
A successful lock should be checked against the expected frequency, symbol rate, polarisation and network identification. If the receiver locks to an unexpected service, the dish may be aimed at a nearby geostationary satellite. This is common in crowded orbital arcs where several satellites appear close together.
No signal can result from incorrect LNB settings, a damaged coaxial cable, water in connectors, poor polarisation or an obstructed path. Recheck the receiver’s local oscillator frequency and make sure the LNB is receiving power. Test the cable separately if possible, because a short circuit or excessive loss can look like a pointing error.
Weather also matters. Heavy rain can reduce Ku-band performance, particularly with a small reflector. If service must remain available through storms, use the provider’s recommended dish size and preserve a suitable fade margin. In Australia, a licensed installer or satellite contractor is often the safest choice for roof work, mast bracing and compliance checks.
Make the installation practical for the Australian market
For an Australian property, the main decision is usually whether the requirement has been misunderstood. An imported Anik F3 dish package cannot provide direct reception in Australia, even if it includes a powerful receiver and a large antenna. Ask the supplier to verify the target orbital slot before purchasing equipment or paying for installation.
Local conditions also influence the alternative. A suburban home in Melbourne may have roof shading from neighbouring buildings, while a rural property near Perth may have a clear horizon but long cable runs. In Brisbane and northern Queensland, wind loading and storm preparation deserve particular attention. Strata approval, landlord permission and council or building requirements may also apply to visible rooftop equipment.
Use these checks before approving a job:
- Confirm that the target satellite is above the horizon at the actual property.
- Match the dish, feed and LNB to the provider’s band and beam.
- Convert true bearing to a local magnetic-compass bearing correctly.
- Check trees, roofs and terrain along the complete line of sight.
- Use a rigid, weather-resistant mount suited to local wind conditions.
- Verify the carrier and service identity after alignment.
If the intended receiver is located outside Australia, SatPointer can provide the directional starting point, while the service operator supplies the current transmission data. For site-specific assistance, contact the SatPointer support team with the installation coordinates, satellite name and receiver requirements.
For an Australian installation, the most useful outcome may be identifying that Anik F3 is unreachable and redirecting the project toward an Australian-coverage satellite. For a North American site, calculate the angles precisely, install the correct equipment and peak the carrier carefully rather than relying on a compass or dish scale alone.