Bayside & Geelong TV Antenna Guide: Salt Corrosion, Townhouse Roofs & Over-Water Signal Paths

Two coasts, two problems

Melbourne's bayside suburbs and the Geelong region both sit on Port Phillip, but their TV reception problems are different. From Brighton to Seaford the signal is strong — Mt Dandenong is only 30 to 35 kilometres away — and the trouble is what salt air does to the hardware. Around Geelong the signal has to travel much further, and the main question is which of two sites to point at.

Bayside: corrosion first

Salt carried on the sea breeze settles on roofs within a couple of kilometres of the water. It corrodes aluminium elements, attacks balun terminals and creeps into connectors. The signal fades gradually — usually one network first — until a wet week finishes it. Along Beach Road and the Nepean Highway, a ten-year-old antenna is often worn out.

Look for white powder on the elements, green or black staining at the balun, and cable that is stiff near the antenna. Inside, watch for one network dropping out before the others and reception that gets worse after rain. We replace corroded parts with sealed, corrosion-resistant hardware, and if the elements are pitted we recommend a new antenna — you save $120 on the install.

Townhouses, parapets and flat roofs

Brighton, Hampton, Black Rock and Beaumaris are being rebuilt with two- and three-storey townhouses and architectural homes. New builds can block a neighbour's path to Mt Dandenong; flat and low-pitched roofs and parapets make mounting harder; and mid-century homes in Beaumaris need antennas that do not spoil the lines. We use wall and fascia brackets that clear the roofline, raise antennas where new builds have blocked the path, and route cable discreetly.

Apartments and multipath

In Port Melbourne, St Kilda and along the bay, many homes share an antenna through an MATV system. When the amplifier or its power supply fails, every unit loses channels. Concrete towers also reflect the signal, causing multipath — delayed copies that interfere with the direct signal and make one or two networks blocky. Moving the antenna a metre or two often fixes multipath; head-end faults need the shared system repaired.

Geelong: Mt Dandenong or Highton?

Geelong receives the Melbourne networks two ways. Mt Dandenong broadcasts them on VHF with horizontal polarisation from about 85 to 105 kilometres away, across the bay. The Highton repeater, in Geelong itself, rebroadcasts them on UHF channels 46 to 50 with horizontal polarisation at 4 kW, using a directional pattern over the Geelong area. Anglesea and Aireys Inlet have their own repeater at Mt Ingoldsby.

Because Mt Dandenong is VHF and Highton is UHF, the antennas are different, and they point in different directions — Mt Dandenong to the east-north-east, Highton toward its site on the city's western side. Many Geelong-region antennas are built for one site but pointed at the other. (You may also see older advice about a "Lovely Banks" TV transmitter; the current local site is Highton.)

Over-water paths

The path from Mt Dandenong to Geelong and the Bellarine crosses Port Phillip. Water carries signal well, but reflections off it can cancel the signal at certain heights, and conditions change with weather and tide. Raising an antenna does not always help — sometimes lowering it half a metre does. We test different heights with a meter before fixing the antenna in place.

Choosing hardware that survives salt

Not all antennas are built for the coast. Look for a sealed balun (the plastic box where the cable connects), elements with a durable finish, and stainless or galvanised mast clamps rather than plain steel. Connectors should be compression-type F-connectors with rubber weather boots, and every join should be wrapped in self-amalgamating tape. The cable itself should be UV-stable quad-shield RG6. These details cost little extra and decide whether an installation lasts a few years or a few decades near the water.

Where the antenna is mounted matters too. On exposed bayside and Bellarine roofs, mounting on the leeward side — provided it still has a clear view toward the transmitter — reduces both salt deposit and wind load.

Bellarine and Surf Coast notes

On the Bellarine — Drysdale, Clifton Springs, Portarlington, Ocean Grove and Barwon Heads — the path to Mt Dandenong crosses the bay and the choice between it and the Highton repeater varies street by street. Around Torquay and Jan Juc, Mt Dandenong is more than 100 kilometres away, so antennas need real gain and accurate aim. Anglesea and Aireys Inlet have their own repeater at Mt Ingoldsby, on UHF with horizontal polarisation. As everywhere on the coast, we meter the realistic options before installing.

How we install on the coast

Every coastal job uses Australian-made antennas with sealed baluns, stainless or galvanised hardware, weather-booted compression connectors and UV-stable cable. Repairs start from $98 with a fixed price agreed after testing, and the call-out is $0 when you go ahead.