Inside Frequency Control


How RF Engineering Companies Can Use Social Media to Attract Top Talent

[fa icon="calendar'] Mar 7, 2017 6:30:00 AM / by Bliley Technologies posted in engineering, Recruiting

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The RF engineering field is an exciting and growing industry, and different firms are always competing to attract that best talent to their teams. But finding the best new employees isn’t as simple as just posting on job boards anymore. To stand out from the crowd, engineering companies use social media to present themselves in the best light to not only their customers but to potential new recruits as well.

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How to Land Your RF Engineering Dream Job

[fa icon="calendar'] Jan 31, 2017 9:35:00 AM / by Bliley Technologies posted in engineering, Recruiting, RF

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RF engineering is a massive and growing industry. Over the last quarter-century, it has gone from simple commercial radio, TV and military communication/detection systems to being an indispensable field of technology that is required for the global economy to function. Wi-Fi, satellite communications, 4G networks and more are all made possible by RF technology, and with exciting developments like 5G and “Space 2.0” just around the corner, the demand for skilled RF engineers is only going to increase. So, if you’re an aspiring engineer who wants to get in on the action, where do you start?

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The Phase Coherence Breakdown - How Does it Affect You?

[fa icon="calendar'] Nov 8, 2016 7:30:00 AM / by Bliley Technologies posted in PNT, engineering, RF

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10 Ways to Attract & Retain Millennial Engineers

[fa icon="calendar'] Nov 1, 2016 6:30:00 AM / by Bliley Technologies posted in engineering

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Our workforce is going through one of the biggest transformations ever.  Of course, we’re talking about the retirement of the Baby Boomer generation and the rise of the Millenials.  Just like every generation before it, the millennial generation requires a special approach to empower them to do their best work.  To other generations, millennials have gotten a bit of a bad rep, but the truth is, they’re not bad, just different.

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Key Developments in mmW Radio Spectrum Research

[fa icon="calendar'] Oct 11, 2016 6:30:00 AM / by Bliley Technologies posted in wireless, engineering, mmW

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Fifth Generation Wireless is Right Around the Corner

Fifth generation wireless systems are not far from becoming a reality, thanks to recent research being done on the millimeter wave (mmW) radio spectrum. Experts agree the way forward is to manufacture mass deployable wireless devices across a range of markets and for different applications. Among other things, these applications include mobile computing and data processing over networks. The technology also has applications in the field of medicine and healthcare.

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The Low Power OCXO Revolution

[fa icon="calendar'] Oct 4, 2016 7:30:00 AM / by Rob Rutkowski posted in innovation, low power, OCXO, engineering

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The Secret to Overcoming Power Supply Rejection Ratio (PSRR)

[fa icon="calendar'] Sep 13, 2016 7:30:00 AM / by Bliley Technologies posted in engineering, filters

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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. 

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Ask the Bliley Team: Morning Routines

[fa icon="calendar'] Sep 8, 2016 3:10:21 PM / by Rob Rutkowski posted in innovation, Leadership, engineering

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It's a new day. The sun begins to rise. Birds begin to chirp. The smell of freshly brewed coffee is in the air. 
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12 Popular Software Defined Radios (SDRs)

[fa icon="calendar'] Sep 1, 2016 8:59:31 AM / by Bliley Technologies posted in innovation, IoT, wireless, engineering

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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.


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. 



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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.

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7 Habits of the Most Innovative Engineers

[fa icon="calendar'] Aug 24, 2016 7:30:00 AM / by Tommy Reed posted in innovation, Leadership, engineering

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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.

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