wireless

2022

2022-01-20 – Modern phone trees
2022-01-11 – Qi charging review

2020

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

2018

2018-12-03 – Why no satellite radio outside North America?
2018-05-03 – NEXTEL is back?
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 LPFM coverage
2017-07-17 – LTE band 26 is 800 MHz ESMR

2016

2016-05-26 – How Paging Coasters work

2015

2015-03-20 – Motorola quad-band portable radio APX8000

2012

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

2007

2007-03-11 – Trunking PTT Latency Part 2
2007-01-21 – Diagnose and fix repeater desensitization

2005

2005-05-23 – Trunking PTT Latency Part 1

2003

2003-03-29 – Cable TV interference to public safety radio

1998

1998-02-05 – Full duplex 800 MHz SMR telephone

1997

1997-09-21 – EF Johnson Challenger 717x/718x microphonic fix

1995

1995-04-28 – Crystal radio performance issues