Topband: Rig Comparisons

[Michael St. Angelo]

Jim,

The Mobility industry has been using pre-distortion. It has finally been
implemented in the Hermes and Apache Labs Transceivers by Warren C. Pratt.
He has won the ARRL Technical Innovation award and justly deserves it:

From
http://www.arrl.org/news/arrl-board-lauds-unforgettable-milestone-formalizes
-lotw-policy-honors-award-recipients 

    * The 2014 ARRL Technical Innovation Award went to Warren C. 
Pratt, NR0V, of Santa Cruz, California. Pratt was cited for his research
leading to the development of PureSignal, "an adaptive baseband
pre-distortion algorithm used to improve the linearity of amplifiers and
reduce intermodulation distortion products emitted by software-defined
transmitters."

Mike N2MS

-----Original Message-----
From: Topband [mailto:topband-bounces at contesting.com] On Behalf Of Jim Brown
Sent: Tuesday, July 29, 2014 1:01 AM
To: 'TopBand'
Subject: Topband: Rig Comparisons

Online chatter about what rigs were used at WRTC and why got me to pursuing
something that's been bugging me for a long time -- the band pollution
produced by many of today's transmitters. K6XX tackled it in talk to NCCC
last fall, and over the weekend, when IOTA was slow (which was a lot of the
time in W6) moved on it.

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