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A personal FM transmitter is a low-power FM radio transmitter that broadcasts a signal from a portable audio device (such as an MP3 player or a smartphone) to a standard FM radio. Most of these transmitters plug into the device's headphone jack and then broadcast the signal over an FM broadcast band frequency, so that it can be picked up by any ...
Maximum power output from a Bluetooth radio is 100 mW for Class 1, 2.5 mW for Class 2, and 1 mW for Class 3 devices. Even the maximum power output of Class 1 is a lower level than the lowest-powered mobile phones. [164] UMTS and W-CDMA output 250 mW, GSM1800/1900 outputs 1000 mW, and GSM850/900 outputs 2000 mW.
A mechanically powered flashlight (UK: mechanically powered torch) is a flashlight that is powered by electricity generated by the muscle power of the user, so it does not need replacement of batteries, or recharging from an electrical source. There are several types which use different operating mechanisms.
MacLoggerDX is a full-featured amateur radio contact logger for macOS with Transceiver control, Rotor control, Callbook lookup, QSL handling (Hardcopy / LoTW / eQSL / Club Log), DX Cluster and spotting, and basic contesting support.
These devices connect and communicate with their parent device via the Bluetooth protocol. A wireless keyboard can be connected using RF technology with the help of two parts, a transmitter and a receiver. The radio transmitter is inside the wireless keyboard. The radio receiver plugs into a keyboard port or USB port. Once the receiver and ...
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For other smartphone operating systems (e.g., Sailfish OS) there are Zello-compatible apps provided by third parties. [20] Zello Work is the paid service of Zello app that allows corporates and users looking for real-time communication over groups and channels. Zello Work is different from Zello but is however owned by the same company. [21]
The Nokia 150 has a flashlight. Display is 2.4 inches with QVGA 320x240 resolution. It is a TFT panel with 65K colours. It supports vibration, has a loudspeaker and a 3.5mm standard headphone jack. Wireless connectivity includes support for Bluetooth 3.0 and 2G networks. This may pose a problem in some countries, like Singapore, where 2G is no ...