wireless

2020

• 2020-12-04 – Google Fi overview
• 2020-11-16 – HD Radio interference to license-free FM
• 2020-10-27 – LTE cellular smartwatch RF signal performance
• 2020-04-30 – Tropospheric ducting super-refraction and LTE
• 2020-01-06 – USA 2G cellular shutdown
• 2020-01-01 – WPAN wireless connections

2019

• 2019-12-05 – Qi charging review

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
• 2018-05-03 – NEXTEL is back?
• 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
• 2017-10-28 – WJIB-AM 740 translator on 101.3 FM
• 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 – LTE band 26 is 800 MHz ESMR
• 2017-01-02 – Survey of 4G LTE Ethernet routers

2016

• 2016-10-15 – Google Pixel 1 phone on Google Fi
• 2016-05-26 – How Paging Coasters work
• 2016-02-13 – Verizon Ellipis MiFi hotspot antenna

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 – Software voice scrambler/descrambler

2007

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

2006

• 2006-12-23 – Blackberry transition from Nextel
• 2006-12-22 – Two-way radio repeater base station performance
• 2006-07-15 – Picking a clear frequency for FM repeaters

2005

• 2005-05-23 – Trunking PTT Latency Part 1
• 2005-03-02 – Nextel Blackberry email vs. standard phone

2004

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

2003

• 2003-11-02 – Radio coverage map verify with sound card log
• 2003-09-07 – Nextel 800 MHz Police radio interference
• 2003-07-30 – Microphonic 800 MHz EF Johnson Repeaters
• 2003-06-18 – Emergency Backup Two-Tone Paging - Part 1/2
• 2003-03-29 – Cable TV interference to public safety radio

2002

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

2001

• 2001-06-11 – Email on Nextel via messaging.nextel.com
• 2001-02-13 – Maximize radio coverage tuneup
• 2001-02-02 – Nextel acquires 900 MHz SMR spectrum

2000

• 2000-09-24 – 900 MHz point to point broadband
• 2000-01-01 – Public safety readio VHF, UHF, 800/900 MHz

1999

• 1999-11-26 – Perils of hilltop tower visits
• 1999-07-06 – Buildout 800 MHz SMR FCC construction permit
• 1999-06-27 – Low-gain vs. high-gain antennas in urban areas

1998

• 1998-07-07 – Wireless WAN in the Midwest
• 1998-06-20 – Repair 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 radio/wireless comms
• 1996-04-05 – Wireless SMR 800/900MHz growth

1994

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

1990

• 1990-06-22 – FM converter for AM radio
• 1990-04-28 – Science fair crystal radio performance issues