2020

• 2020-01-06 – USA 2G cellular shutdown
• 2020-01-01 – WPAN wireless connections to local devices in 2020

2019

• 2019-12-05 – Qi charging review
• 2019-10-19 – Google Fi technical aspects
• 2019-07-20 – Tropospheric ducting super-refraction and LTE

2018

• 2018-12-03 – Why no satellite radio outside North America?
• 2018-10-20 – What 5G spectrum does Starry use?
• 2018-09-30 – LG-W200A Urbane 2nd Edition LTE Technical Review
• 2018-05-03 – NEXTEL is back?
• 2018-03-15 – LTE cellular smartwatch RF signal performance
• 2018-02-05 – WROL 950 FM translator 100.3 FM
• 2018-01-10 – Radio Mobile Deluxe WINE

2017

• 2017-12-10 – Two megawatt medium wave AM/DRM transmitter
• 2017-10-27 – FMeXtra/VuCAST vs. HD Radio
• 2017-10-07 – MURS VHF vs. 900 MHz modems
• 2017-09-09 – 9V battery can not charge modern cell phone
• 2017-08-01 – LoRa Wifi Ranging and SX1280 chip
• 2017-07-26 – Bloomberg Radio now on 106.1 FM in Boston
• 2017-07-17 – Google Fi uses Sprint Band 26, which is 800 MHz ESMR spectrum.
• 2017-01-02 – Survey of 4G LTE Ethernet routers

2016

• 2016-10-15 – Google Pixel 1 phone on Google Fi - Technical Details
• 2016-05-26 – How Paging Coasters work
• 2016-02-13 – Verizon Ellipis MiFi - Antenna details of Mobile Hotspot

2015

• 2015-07-20 – Sending ICMP ping from BB10
• 2015-03-20 – Motorola quad-band portable radio APX8000

2012

• 2012-01-20 – Positive train control in dark territory

2009

• 2009-06-03 – Why arbitrary 160 character SMS limit?
• 2009-02-13 – Preliminary implementation of software voice scrambler/descrambler

2008

• 2008-02-16 – Nextel site locations in Michigan

2007

• 2007-06-16 – 3G WWAN for mobile workers
• 2007-03-11 – Radio Trunking system PTT Latency and Overloading Part 2
• 2007-01-21 – Diagnose and fix repeater desensitization
• 2007-01-02 – Tracing Public Safety / Critical Infrastructure radio repeater interference

2006

• 2006-12-23 – Sprint Blackberry 8703e transition from Nextel
• 2006-12-22 – Detailed two-way radio repeater base station diagnosis and upgrades
• 2006-07-15 – Picking a clear frequency for FM repeaters

2005

• 2005-05-23 – Radio Trunking system PTT Latency and Overloading Part 1
• 2005-03-02 – Nextel Blackberry 7520 email vs. standard phone setup.

2004

• 2004-05-03 – 800 MHz overloading receiver interference
• 2004-01-02 – SDARS satellite radio indoor reception

2003

• 2003-11-02 – Radio coverage map verification with sound card logging.
• 2003-09-07 – Chasing Nextel 800MHz Police Radio Interference Before Rebanding.
• 2003-07-30 – Microphonic 800 MHz EF Johnson Repeaters
• 2003-06-18 – Emergency Backup Two-Tone Paging - Part 1/2
• 2003-03-29 – Tracking down Cable TV leakage interference to public safety repeater radio systems

2002

• 2002-09-15 – AOL Instant Messenger by phone.
• 2002-07-10 – Field trip to Motorola headquarters

2001

• 2001-06-11 – Get/send email on Nextel via messaging.nextel.com
• 2001-02-13 – Maximum performance of trunking system via modulation level tuneup.
• 2001-02-02 – Nextel acquires 900 MHz SMR spectrum

2000

• 2000-09-24 – 900 MHz point to point broadband
• 2000-01-01 – Why do public safety systems use VHF instead of UHF or 800/900 MHz?

1999

• 1999-11-26 – Perils of hilltop tower visits - deer hunters, failing brakes and pirates
• 1999-07-06 – Building an 800 MHz SMR system using salvage parts to fulfill FCC construction permit.
• 1999-06-27 – Low-gain antennas can be better than high-gain antennas in urban areas

1998

• 1998-07-07 – Wireless WAN in the Midwest
• 1998-06-20 – Repairing 35 Watt 800 MHz EF Johnson Summit radios
• 1998-02-05 – Full duplex 800 MHz SMR telephone

1997

• 1997-12-23 – Transition to 800 MHz trunked radio system.

1996

• 1996-11-11 – Trucking companies choices for radio/wireless comms
• 1996-04-05 – Working in wireless SMR 800/900MHz growth field.

1994

• 1994-09-21 – EF Johnson Challenger 717x/718x microphonic fix