Photographic fixer is a mix of chemicals used in the final step in the photographic processing of film or paper.The fixer stabilises the image, removing the unexposed silver halide remaining on the photographic film or photographic paper, leaving behind the reduced metallic silver that forms the image.By fixation, the film or paper is insensitive to further action by light.ixation is commonly achieved by treating the film or paper with a solution of thiosulfate salt. Popular salts are sodium thiosulfate âcommonly called hypoâand ammonium thiosulfate âcommonly used in modern rapid fixer formulae.
DTS Sound is a really impressive feature-set for lower-end products that have to compromise due to price points and application. While DTS Sound isnât a CODEC, it is a technology that integrates well into products who would otherwise not be able to deliver much of the material mastered in todayâs movie soundtracks.
The receiving radio may be programmed to only respond to signals transmitting the desired tone frequency. Digital Coded Squelch (DCS) is a digital form of CTCSS. A third type of squelch system, called Selective Calling (SelCall) is used in some business radios, but is not used in Ham radios. Note that none of these squelch systems are used in digital radios. CTCSS is also known by a number of other terms which are registered trademarks of individual manufacturers. Among them are Private Line (PL), owned by Motorola; Channel Guard (CG), owned by GE/Ericsson/Harris; and Quiet Tone (QT), owned by Kenwood.