Showing posts with label Campbell-Rick. Show all posts
Showing posts with label Campbell-Rick. Show all posts
Monday, September 23, 2024

Ham Radio -- How To Build Stable Oscillators

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Spasibo Vasily!   Wow, thanks a lot Todd.   There is some great wisdom in your video.  You clearly demonstrate that it is possible to build ...
4 comments:
Tuesday, May 30, 2023

Rick Campbell KK7B at FDIM: Interview #5 by Bob Crane W8SX

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/KH6 Having recently been involved in an effort to teach students about radio electronics, I found Rick's comments especially interestin...
Wednesday, September 23, 2020

Wisdom from AA0ZZ: NO LIBRARIES! ASSEMBLER CODE ONLY! -- "Digital Crap" -- "No Magic Fruit" What qualifies as a real rig? Si570 vs. Si5351

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  Bill, Why do you guys make your Soldersmoke podcasts so darn intriguing such that I can’t listen to them in the background while I’m doing...
1 comment:
Friday, September 18, 2020

Mixer Insights using Propellers and Cameras -- From Walla Walla University. And SDR Design Info.

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  Pete Eaton sent us this video from the 2020 ARRL/TAPR Communications Conference.   I have the portion of interest cued up (above).  (The...
1 comment:
Sunday, August 9, 2020

Presence (Absence?) and Direct Conversion Receivers (with wise comments from Farhan)

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Hello Bill,     I was reading an online article by Wes Hayward, W7ZO  from 1968  about the history of direct conversion receivers ( h...
1 comment:
Sunday, May 31, 2020

QCX SSB -- But How Much QCX Remains?

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Hack-A-Day carried a very nice video describing recent efforts to turn Hans Summers' amazing QCX CW monoband transceiver into a multi-...
2 comments:
Monday, October 21, 2019

Farhan Visits Northern Virginia and SolderSmoke HQ

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  Our good friend Farhan came to Northern Virginia last week for the 50th Anniversary Symposium of AMSAT.   We were really delighted that...
3 comments:
Wednesday, May 17, 2017

Homebrew History is Made: Farhan @ W7ZOI

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Thanks to Wes W7ZOI for sending me the link to his page describing the visit of our friend Farhan.  I think this visit was a historic gath...
14 comments:
Friday, January 27, 2017

When Bypass Caps are Not Enough: Active Decoupling

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I was having a noise problem with my NE602 Si5351 OLED display receiver.   There was an annoying high pitched whine in the audio output.  ...
4 comments:
Sunday, April 3, 2016

Possibly the Best Ham Radio Interview Ever: Farhan on "QSO Today"

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Stop what you are doing.  Run -- don't walk -- to the "QSO Today" website of Eric Guth 4Z1UG.   There you will find ...
1 comment:
Friday, March 25, 2016

KK7B's Thoughts on Notebooks, Experiments, and Building

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From the r2pro yahoo mailing list: Hi All, Some interesting posts lately, with notes or links on "to build or not to build,...
2 comments:
Saturday, March 12, 2016

EMRFD Joy of Oscillation (Part 1)

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Guys: I have been catching up on the last few SolderSmoke podcasts after that little QSO Today diversion.  I wonder how many others did ...
1 comment:
Monday, February 22, 2016

Design Wisdom from Allison, KB1GMX

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Allison KB1GMX has helped me out of numerous battles with recalcitrant amplifiers.  She provided an interesting contribution on the r2...
Sunday, February 21, 2016

Words of Wisdom from Rick Campbell, KK7B

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Rick Campbell KK7B recently responded to a question on the r2pro mailing list.  His answer was so good, and so full of design wisdom that I ...
1 comment:
Tuesday, February 9, 2016

Back to Divide by 4 -- Big Improvement in Receiver Performance

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Thanks for all the comments and advice.  I have come to understand the wisdom of divide by 4 IQ circuits.   Fortunately it was very easy...
5 comments:
Sunday, January 24, 2016

Listen to My R2 Phasing Receiver (formerly known as "The Frankenstein" )

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I really like this receiver.  Thanks to all who helped. 
9 comments:
Saturday, January 23, 2016

Some Inspiring Phasing Philosophy from KK7B

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KK7B holding his original Mini-R2 Rick Campbell KK7B concludes Chapter 9 of "Experimental Methods in RF Design" with these ...
Tuesday, January 12, 2016

N7SUR's Phasing Receiver on an Oregon Pine Board

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And here I thought I was the only one.  Apparently not.  Bob LeDoux has also built a phasing receiver using a piece of wood as a base. I n...
2 comments:
Saturday, January 9, 2016

A Good Radio Morning at N2CQR

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The Radio Gods were smiling upon me this morning.  I started out on 17 meters and had three nice contacts with European stations:  OH5CZ,...
11 comments:
Sunday, December 6, 2015

New Rig: The FRANKENSTEIN Phasing Receiver

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Here is my latest project.  I call it The Frankenstein because of the two BNC connectors that come off the side of the DDS oscillator...
7 comments: