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PHOENIX & ERIE, Pa. -- October 24th, 2016
(via BUSINESS WIRE) 

Modern electronic devices require a frequency reference. In many systems, this reference is provided by crystal oscillators, and the devices are used for many applications, including:

• Frequency synthesizers
• Local oscillators
• Similar types of circuits

Traditional Use of Cube Satellites

The outer atmosphere around Earth contains more than a 100 satellites that are shaped like Rubik's cubes but are a bit larger. Closely packed with various instruments, these satellites have been launched at frequent intervals since 2013.  

One of the most significant changes to the way the military operates has been the integration of GPS for positioning, navigation, and timing purposes, which has given military forces unprecedented command and control over battle grounds. Troops and command centers are now in a state of continuous situational awareness, with an endless stream of data being added to military servers at all time.

PRESS RELEASE

For Immediate Release

Bliley Introduces LP-N: Low Power OCXO in DIP8 Package

September 16th, 2016 

TL;DR:

PSRR filtering is becoming more and more difficult for engineers to incorporate into timing designs. In this post, we explain why this is, what PSSR is in the first place, and the best ways to avoid the dreaded "supply ripple". You'll have a strong understanding of the problems and solutions that arise from PSRR by the end of this post. 

Software Defined Radios (SDRs) are constantly evolving. It seems like "the latest and greatest" SDRs are always popping up somewhere with today's rapidly growing technology. We thought it'd be helpful to provide you with some of the most popular and top rated SDRs in today's market.

CHECK OUT OUR 2018 UPDATE HERE.

We tried to include a wide variation of prices, applications, frequencies, and ease of use on the following list. This way, it'll be more likely that you'll find the best Software Defined Radio for your needs in the following list. 

Without further ado, here are 12 great Software Defined Radios for you!

*Descriptions taken from product pages
**Disclosure: This post that contains affiliate links.

1. RTL-SDR (R820T RTL2832U)

• What a great place to start! This RTL-SDR is cheap and great for beginners or those on a budget. 
• Applications include general radio scanning, air traffic control, public safety radio, ADSB, AIS, ACARS, trunked radio, P25 digital voice, POCSAG, weather balloons, APRS, NOAA APT weather satellites, radio astronomy, meteor scatter monitorin, and more
• Frequency: 500 kHz to 1.7 GHz and has up to 3.2 MHz of instantaneous bandwidth

2. Red Pitaya

3. NooElec NESDR

• Included: NooElec USB dongle, antenna, remote control
• RTL2832U interface IC & R820T tuner IC on USB dongle
• Full compatibility with a large array of software packages

4. Quadrus

• DRU-244A-1-1-PCI SDR hardware digitizer
• 1 ADC chip with 1 analog input
• 1 DDC chip with 4 radio channels

5. HackRF One

• Operating Frequency: 1 MHz to 6 GHz
• Matching male SMA ANT500 antenna & USB cable included
• Compatible with GNU Radio, SDR#, and more

6. RPD-100

• 6U Compact-PCI form factor hardware development platform that can be used for a variety of applications, such as Software Defined Radio.
• Optimized to provide high performance signal conversion using high speed ADC’s and DAC’s.
• Other applications: WiMAX, Satellite MODEM's, RFID, Wireless Communication Systems

7. Ubertooth One

• 2.4 GHz Transmit and Receive.
• Suitable for Bluetooth experimentation
• Can also operate in monitor mode, monitoring Bluetooth traffic in real-time.

8. Usmile

• Frequency: 100KHz-1.7GHz
• Built-in 100Mhz upconverter combined with Built-in HD R820T allow better receiving of short wave than using direct SDR’s Q tunnel
• Easy to set-up, just connect it and you’re ready to go!

9. AirSpy

• Alternative to both cost sensitive and higher end scanners while featuring the "best radio browsing experience of the market" thanks to the tight integration with the de facto standard SDR# software.
  
• External GPS or Rubidium clocks supported for professional use
• Full HF Coverage

10. National Instruments USRP

• Flexible and affordable transceiver that turns a standard PC into a powerful wireless prototyping system.
• Supports multirate DSP for physical layer communications and helps you integrate .m file scripts and C language algorithms.

11. ThinkRF's WSA5000

•  Large frequency range of 100 kHz up to 27 GHz and wide instantaneous bandwidth of up to 100 MHz.
• Supports 160 MHz instantaneous bandwidth

12. Seeedstudio KiwiSDR Kit

• SDR covers the 10 kHz to 30 MHz (VLF-HF) spectrum.
• Demodulation modes: AM, AMN, LSB, USB, CW, CWN, NBFM.
• RF antenna connector: SMA and terminal block.
• GPS receives the Navstar system on L1 frequency 1575.42 MHz.

Are You Experiencing Phase Noise in your Applications?

Phase noise is a pain. Learn about phase noise and how to instantly eliminate it in amplifiers, radars, and communication systems. 

Full Disclosure: Some of the links above are affiliate links, meaning, at no additional cost to you, we will earn a small commission in you click through and make a purchase.

I've been innovating for the majority of my career.  First on the front lines, working R&D projects, then moving to managing those projects, and then managing entire portfolios of several dozen projects, to leading the entire technology and innovation strategy for our company.

It is crucial to understand phase noise when it comes to understanding crystal oscillators. Phase noise is one of the most important factors of the oscillator selection process, so you'll want to have a strong understanding of what phase noise is and where the term originates.  

If you're looking for more in-depth information on phase noise, make sure to check this post for our complete guide understanding of phase noise.