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2. Low-noise amplifier - Wikipedia

   en.wikipedia.org/wiki/Low-noise_amplifier

   A low-noise amplifier (LNA) is an electronic component that amplifies a very low-power signal without significantly degrading its signal-to-noise ratio (SNR). Any electronic amplifier will increase the power of both the signal and the noise present at its input, but the amplifier will also introduce some additional noise.

3. Tower Mounted Amplifier - Wikipedia

   en.wikipedia.org/wiki/Tower_Mounted_Amplifier

   A Tower Mounted Amplifier (TMA), or Mast Head Amplifier (MHA), is a low-noise amplifier (LNA) mounted as close as practical to the antenna in mobile masts or base transceiver stations. A TMA reduces the base transceiver station noise figure (NF) and therefore improves its overall sensitivity ; in other words the mobile mast is able to receive ...

4. List of LM-series integrated circuits - Wikipedia

   en.wikipedia.org/wiki/List_of_LM-series...

   Power op-amp with a maximal current output of 3 amperes [23] LM709 Yes General-purpose op-amp [24] LM741 LM709 General-purpose op-amp. [25] Widely used. LM747: Yes General-purpose dual op-amp. [26] LM748 General-purpose op-amp with external compensation [27] LM833 Dual high-speed audio operational amplifiers [28] LM837 Low-noise quadruple op ...

5. The best tech for adults over 65 we spotted at CES this year

   www.aol.com/lifestyle/ces-2025-aging-in-place...

   In moments when 911 is dialed, the first 8 to 10 minutes can be crucial to someone in distress. Debuting at the 2025 CES, Glomensio’s Firefly Gen 2 is a compact and smart “Light-Up House ...

6. Low-noise block downconverter - Wikipedia

   en.wikipedia.org/wiki/Low-noise_block_downconverter

   A universal LNB has a switchable local oscillator frequency of 9.75/10.60 GHz to provide two modes of operation: low band reception (10.70–11.70 GHz) and high band reception (11.70–12.75 GHz). The local oscillator frequency is switched in response to a 22 kHz signal superimposed on the supply voltage from the connected receiver.

7. The 7 best invisible hearing aids of 2024, according to ... - AOL

   www.aol.com/lifestyle/best-invisible-hearing...

   Those include noise-cancellation features, directional microphones, rechargeable batteries, fall detection and stream soothing sounds. Ongoing professional support and long trial periods are ...

8. Valve RF amplifier - Wikipedia

   en.wikipedia.org/wiki/Valve_RF_amplifier

   (This is the reason for the relatively high noise resistance of the EF86 in the above example.) Thus, tubes with low noise at high frequency do not necessarily have low noise in the audio frequency range. For special low-noise audio tubes, the frequency at which 1/f noise takes over is reduced as far as possible, maybe to approximately a ...

9. Parametric oscillator - Wikipedia

   en.wikipedia.org/wiki/Parametric_oscillator

   Parametric amplifiers are used in applications requiring extremely low noise. A parametric oscillator is a driven harmonic oscillator in which the oscillations are driven by varying some parameters of the system at some frequencies, typically different from the natural frequency of the oscillator.