The sensitivity of a radio receiver is a key operational parameter and it is limited by the system noise.
The sensitivity of a radio receiver determines the weakest signals that can be successfully receiver. Whether it is an audio signal for which the listening quality deteriorates as the signal falls into the noise, or a data signal where the bit error rate rises and throughput falls.
In this way, the radio receiver sensitivity is a key parameter that has an impact on the performance of any radio communications, broadcast or other system.
In fact, the two main requirements of any radio receiver are that it should be able to separate one station from another, i.e. selectivity, and sensitivity so that signals can be brought to a sufficient level above the noise to be able to use the modulation applied to the carrier that has been transmitted. As a result receiver designers battle with many parameters to make sure that both these requirements and many others are all fulfilled
Read Full Article
< Who is Signal Stuff? In a world where Amateur Radio ought to be on the cutting edge of technology, far too often hams are seen as being “old s... Read more
“Let’s see if my new DJI Mavic Mini can lift a long wire to be used as an antenna for amateur radio! Not a practical solution by any means... Read more
“This video is about the MFJ-1982MP End Fed antenna. You can find them using the link below. The MFJ-1982 covers 80-10 meters. This antenna can... Read more
This is an amazing machine made by “Sam” in the USA. I thank him for hand-assembling these. I have two now – and Sam is furnishing m... Read more
A first look at the Portable version of the world famous DX Commander vertical antenna for Ham Radio. Read more
On Friday the 29th of May 2020, there was an extensive Sporadic-E opening across Europe which reached as high as 144 MHz allowing stations across the... Read more
Professional VHF UHF Radio: Dual band, dual watch, dual standby, up to 128 channels. Equipped with an 8.9-inch long antenna, this solid 5W radio can r... Read more
The Federal Network Agency made a preliminary provisional implementation of the WRC-19 results for the 6‑m band in MItteilung 111 from Amtsblatt 08/20... Read more
“This weeks show is slightly different. What if we take the Anytone AT D878 UV plus and put it in almost ideal conditions. How far can a 5 watt... Read more
A satellite antenna can be made from 3 mm copper or aluminum elements, PVC boom, and some parts you may already have at home. To download the plan (hi... Read more
Rotator Genius is a smart rotator controller that uses a magnetic sensor for reading azimuth. It can be controlled by a Windows or Android app. Motor... Read more
by Eric Swartz May 19, 2020 Hi Everyone, At Elecraft, like many of you, we are in our 9th week of shelter in place. This has been tough on all of us.... Read more
IC-705 HF/VHF/UHF Mobile Transceiver – Coming Soon! The new portable HF/VHF/UHF IC-705 has many great features such as SDR platform, internal ba... Read more
The motto of the new European Radio Amateurs’ Organization (EURAO https://www.eurao.org/) Summer Party https://www.eurao.org/en/node/1045 is... Read more
The World Wide Radio Operators Foundation (“WWROF”), in collaboration with the Slovenia Contest Club (“SCC”), is pleased to announce the first annual... Read more
The latest TQSL update (Config.xml version 11.8), released on May 22, includes FT4 as a submode of MFSK. It also adds AISAT-1 and PO-101 in the satell... Read more
Dave Bernstein reported this on the DXLabs support group today: ————————————... Read more