Hi! I am Phil Karn, KA9Q. Welcome to my personal home page!

Contact information

Quote of the Day

"Why would anybody want to walk around campus making phone calls?" - Paraphrased from many fellow students when I showed them my two-meter FM ham walkie-talkie and the repeater with telephone autopatch that a fellow Cornell EE student and I built circa 1976. Their remarks were usually accompanied with rolling eyes and that look we engineering nerds saw so often back then.

Old quotes of the day

New stuff

Qualcomm Stuff

Qualcomm CDMA

Internet activities

• How to dual-home servers on U-verse (new Apr 2013)
• Comments on AT&T's U-verse service
• The KA9Q NOS TCP/IP Package
• Internet Privacy and Security
• Foundation Internet Papers
• Two open letters to Perftech, Inc: letter 1 - letter 2. This company makes devices that ISPs use to modify web pages from third parties. This is one of the most outrageous violations of Network Neutrality (not to mention the Internet End-to-End model) I've ever seen. (12 December 2007)
• Using the AirPrime 5220 Card on Verizon BroadbandAccess under Linux
• Times-Warner Road Runner Cable Modem Service
• IETF PILC LINK: Advice to Subnetwork Designers

Amateur Radio Digital Communications

BPSK1000 telemetry format for the ARISSat-1 satellite

• Paper published at 2010 AMSAT Space Symposium
• Talk slides at 2010 AMSAT Space Symposium
• ARISSat-1 telemetry beacon link budget
• Demodulator/decoder source code - Takes sound card audio and produces HDLC frames. This is my part of the project.
• ARISSat telemetry ground station software archive - This is probably where you want to go if you're looking for a complete program to decode the ARISSat-1 telemetry.

Political Stuff

• Anybody want to know who invented the term "enhanced interrogation"? Click here.
• Why I hate Microsoft: worms and viruses
• 9th Circuit Affirms Bernstein ruling: crypto export rules are unconstitutional!
• Oppose the flag-burning amendment!
• The "No Mental Theft" Act
• The Applied Cryptography export case
• The Patent Office is out of control!

Pseudoscience

• Debunking crackpots and pseudo-science
• The Apollo "hoax"(Sept 2009)
• Analysis of "xMax" technology (updated 1 October 2009)
• A review of one of xG's patents (added 16 May 2007)
• Comments on lab test of xMax (added 4 June 2007)
• Comments on Stu Schwartz's evaluation of xMax (added 6 June 2007)
• An analysis of xG's claim that xMax uses 3,000,000 times less power than WiFi (revised 29 June 2007)
• The VMSK Delusion A thorough debunking of the bogus modulation scheme developed by Harold Walker. (updated 20 March 2007)

Miscellaneous

• Comments to NTSB on the grounding of aircraft DC power system neutrals
• My Photovoltaic Power System
• My software packages and utilities
• My EV-1 (electric car) pages
• Archive of my papers, talks, publications and interviews
• Links to miscellaneous and fun Stuff (updated 8 March 2008)
• Some Totally Amazing Quotes (Updated 24 January 2009)
• And some fairly good ones (Updated 3 October 2009)
• Some photos of me
• Revenge On A Telemarketing Scam
• Solving NPR's Sunday Morning Puzzles with Perl

Last updated: 23 Apr 2013