As the world is embracing digital broadcasting, Australia is also keeping pace by bidding adieu to analog television. This shift translates into new set-top boxes if your faithful telly isn’t capable of transmitting digital signals.
However, it certainly doesn’t boil down to replacing your antenna. It’s common myth that you will need separate antennas for receiving digital and HD channels. Antennas capable of coding analog signals are good to go with high-def or digital signals.
More than Analog or Digital, the channel frequency matters
The debate here isn’t about analog versus digital; it has more to do with channel frequency. If the existing analog signal features a certain frequency, like the VHF band, and the upcoming digital signal is in the UHF band, you may have to go in for antenna replacement. The antenna’s frequency range is in question here, not the signal type.
Antennas work in a similar way. By detecting radio wave vibration in a specific frequency range, electrons present in the antenna accelerate in a back and forth manner, leading to signals that are then transferred via terminals to electrical circuits and thereby, cause voltage changes. The entire process leads to signal reception.
Is Antenna size important?
While antenna technology hasn’t changed, an antenna’s size and shape affects your reception. Larger antennas are able to collect more energy: hence, they are capable of collecting weak signals.
Different shapes are adept at picking up specific frequency signals such as UHF, VHF and HF. The shape is an important determinant of the direction an antenna will pick up signals from.
Specific antenna designs are meant to receive specific range frequencies; but more than that, radio tuner or TV circuits are responsible for fine tuning an individual channel or frequency.
Antennas are region-specific
Also, your area of residence has a lot to do in finalising whether the antenna is mounted vertically or horizontally. Signal polarity or the axis along which waves vibrate is region-dependant.
At Jim’s Antennas we get asked all sorts of questions in regards to receiving better TV reception, but lately we have seen a lot of requests to get better Digital Radio reception and can we help out? Well the answer is…of course we can! Digital Radio uses a far more advanced and technically robust transmission […]
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Mark from Jim’s Antennas Wynnum was recently requested by a client to investigate a television reception issue on the clients charter fishing vessel at Manly boat harbour. The clients tv reception became very poor when moored at the boat harbour and improved when the vessel was away from the mooring. All Jim’s Antenna technicians are […]
Get your guyed mast checked! With the strong winds around recently it a timely reminder to get your guyed mast checked. Brett from Jim’s Antennas Mickleham responded to this customer and had to replace the entire antenna system when the 30 ft mast came down in strong winds recently. The guyed wires were rusted, […]