Q. How much range should I expect from your wireless products?
A. Please see data sheets for ranges. Listed ranges are specified as “line-of-sight”. Non line-of-sight applications will have reduced range, and the amount of reduction will depend on the nature of the obstructions. Please contact us for discussion on your application.
Q. What frequency should I use for data transfer?
A. Per FCC Part 15 regulations, the 300 and 400 MHz bands may only be used for periodic data transmissions, such as keyless entry type applications. See FCC Part 15 rules for requirements. For continuous or regular transmission intervals, the 900 MHz or 2400 MHz bands must be used. The 900 MHz band can be used for periodic data transmissions as well. Within the 300 and 400 MHz band the choice is yours, and may be limited by your RF environment. For instance, if you will be designing for an application where the environment already has 315 MHz, you can choose to use a 303 MHz or our 433 MHz frequency.
Q. Will the signal of your wireless products penetrate walls, floors, shrubbery, and fences?
A. In most cases the signal will pass through wood with little attenuation. Stucco and tightly welded metal construction will attenuate the signal to a greater degree. Chain link fences will attenuate the signal if the fence height is high. Shrubbery will have little effect on the signal.
Q. Can two or more wireless transmitters operate at the same frequency at the same time in the same area?
A. For our single frequency products, if the transmissions are for a short duration, multiple transmitters can operate at the same frequency in the same area. For our spread spectrum products (24SS series), many (10+) transmitters and receivers may operate in the same area simultaneously.
Q. Will your wireless products interfere with other radios, TV’s, Wifi or other wireless systems?
A. This is very unlikely due to the very low power level of the transmitters and the excellent internal filtering of the harmonics.
Q. Can the receiver operate near other high power radio transmitters such as cellular telephones, two-way radios, cordless telephones, amateur radio or CB transmitters?
A. Yes. The wireless receivers incorporate a very selective front-end SAW filter which rejects out-of-band energy that could potentially desensitize or interfere with the receiver. The receiver is super-heterodyne with excellent selectivity. It will perform far better than the typical low-cost regenerative receiver found in toys and some car alarms.
Q. Are the transmitters FCC approved?
A. Our KTX, SF, NTX, PAT and AT series transmitters are all FCC certified.
Q. Are Applied Wireless products RoHS compliant?
A. Applied Wireless products that are manufactured exclusively for export to the EU and which fall within the scope of Directive 2002/95/EC of the European Parliament and of the Council of 27 January 2003 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (the “RoHS Directive”), as amended by the Commission Decision of 18 August 2005 (the “Commission Decision”) are marked with a “-RC” suffix appended to the product’s base part number. As such, the products so marked meet the requirements and the threshold limits of the six hazardous substances specified in the RoHS Directive and the Commission Decision. The maximum allowable concentration values of the six hazardous substances in homogeneous materials specified in the Commission Decision is 0.1% by weight for lead, mercury, hexavalent chromium, polybrominated buphenyls (PBB), and polybrominated diphenyl ethers (PBDE), and 0.01% by weight for cadmium.