Comparison Whistler 118ST vs Whistler 138ST

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	Whistler 118ST	Whistler 138ST
	from $72.00 Outdated Product	from $106.08 up to $114.08 Outdated Product
all specs only differences
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Bands
Bands	K /23950 – 24250 MHz/ Ka /33400 – 35600 MHz/ X /10500 – 10550 MHz/	K Ka X
Laser wavelength	800 – 1000 nm	800 – 1000 nm
Pulse signals
Pulse signals support	POP	POP
Radar type detection
Radar type detection	Strelka	Strelka
Features
Functions	VG-2 protection Highway mode City mode display brightness adjustment mute	VG-2 protection Highway mode City mode /3 modes/ display brightness adjustment mute
Receiver
Receiver type	superheterodyne	superheterodyne
Signal processing	digital
General
Current consumption	250 mA	200 mA
Added to E-Catalog	april 2014	july 2013

Signal processing

The signal processing method used by the radar detector.

Initially, inexpensive radar detectors used analogue processing units, digital ones were installed in advanced equipment, and digital-analogue "hybrids" were a compromise option. However, today, thanks to the development and cheapening of technologies, the vast majority of models use digital processing — it is the most accurate and provides the most opportunities.

Current consumption

The current nominally consumed by the radar detector during operation. Usually, with a regular connection to the cigarette lighter socket with the engine running, this parameter does not play a special role — even the most advanced models do not “eat” so much that this noticeably affects the operation of the on-board network. In fact, current consumption data may be useful only in some specific situations — for example, battery operation.