The heterodyne oscillator is the ancestor of the " beat frequency oscillator " ( BFO ) which is used to receive radiotelegraphy in communications receivers today.
22.
The "'Almonte Detachment "'was a military-operated radio communications receiver station linked by land line to CFS Carp located off Lanark County Road 49 East of Almonte, Ontario.
23.
For this reason, the related figure of " effective noise temperature " is therefore often used instead of the noise figure for characterizing satellite-communication receivers and low-noise amplifiers.
24.
In addition to the radar warning and jamming equipment the Growler possesses a communications receiver and jamming system that will provide suppression and electronic attack against airborne communication threats.
25.
Today the heterodyne method is still used to receive CW signals, and the " beat frequency oscillator " ( BFO ) is a standard part of all communications receivers.
26.
200pxIn a communications receiver designed for CTCSS, a high-pass audio filter is supposed to block CTCSS tones ( below 300 Hz ) so they are not heard in the speaker.
27.
In fiber optics, coded electrical signals are turned into laser light pulses that travel great distances through ultra-pure glass fibers and then are converted back to electricity to power communications receivers.
28.
The "'Dunrobin Detachment "'was a military-operated radio communications receiver station linked by land line to CFS Carp located on the corner of Dunrobin Road and Vance's Side Road NW of Dunrobin, Ontario.
29.
For example, a communications receiver might contain two mixer stages for conversion of the input signal to an intermediate frequency and another mixer employed as a detector for demodulation of the signal.
30.
Boeing is looking into other potential upgrades; the ALQ-99 radar jamming pod may be replaced in the future, and the company is looking into adding weapons and replacing the satellite communications receiver.
