Showing posts with label ARRL. Show all posts
Showing posts with label ARRL. Show all posts
Monday, September 9, 2024

IMD in Transmitters -- Splatter? Or Signal Strength?

›
https://www.newsvhf.com/conf2024/PresPapers/WA1MBA-IMD_in_Transmitters.pdf Here is a good (and very recent) article on IMD ("splatter...
1 comment:
Wednesday, December 7, 2022

Is Envelope Detection a Fable? Or is it Real? Diodes, Square Laws and all that

›
HOW ENVELOPE DETECTION (SUPPOSEDLY?) WORKS  Most of us grew up with the above diagram of how a receiver detects (demodulates) an AM signal. ...
16 comments:
Sunday, July 24, 2022

A Surprisingly Good Movie from the Late 1960s: "The Ham's Wide World" (Video)

›
I found this movie to be surprisingly good.  Narrated by Arthur Godfrey, it features Barry Goldwater, and a lot of other hams.  There is a h...
6 comments:
Tuesday, July 27, 2021

QST Recognized Error on Sideband Inversion, But Continued to Make the Same Mistake

›
  I don't really know if this is good news or bad news.  It's good that in November 1985 they recognized the error, but then they al...
1 comment:
Monday, July 26, 2021

QST Repeatedly Got Sideband Inversion Wrong

›
It kind of pains me to do this. These articles are from a long time ago, and the author is an esteemed  Silent Key,  but the myth about the ...
1 comment:
Wednesday, November 14, 2018

W7ZOI: Direct Conversion Receivers -- Some Amateur Radio History

›
http://w7zoi.net/dcrx68.pdf Farhan and Pete WB9FLW alerted me to this wonderful article by Wes Hayward, W7ZOI.  I guess my interest in ...
2 comments:
Monday, June 12, 2017

FDIM: Bob Crane Interviews Ed Hare W1RFI

›
I always associate "Ed Hare" with that picture of him holding an HW-8 in the ARRL lab. I was supposed to edit this one a ...
Wednesday, April 20, 2016

Meeting up with ARRL CEO Tom Gallagher, NY2RF

›
On April 12, Tom Gallagher NY2RF was in DC and was kind enough to make some time in his schedule for us to get together and talk about rad...
3 comments: