Is analog or digital more reliable?
Analog multiplier
In most cases the functions performed by an analog multiplier may be performed better and at lower cost using Digital Signal Processing techniques. At low frequencies a digital solution is cheaper and more effective, and allows the circuit function to be modified in firmware. As frequencies rise, the cost of implementing digital solutions increases much more steeply than for analog solutions. As digital technology advances, the use of analog multipliers tends to be ever more marginalised towards higher-frequency circuits or very specialized applications.
Freeview (UK)
Aerial requirements for analogue (the old standard) and digital reception in the UK are identical; there is no such thing as a special "digital aerial", although installers and suppliers often falsely say one is necessary. As the signal degrades, the analogue picture degrades gradually, but the digital picture holds up well then suddenly becomes unwatchable; an aerial which gave poor analogue viewing may give unwatchable, rather than poor, digital viewing, and need replacing, at a cost of typically £80 to £180, most of which is fitting cost. An aerial intended for external use may be fitted indoors if there is space and the signal is strong enough.