Showing posts with label Hayward--Wes. Show all posts
Showing posts with label Hayward--Wes. Show all posts
Wednesday, May 1, 2024

KE5HPY Builds a QRP Transmitter

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  FB Chuck, very cool.  Please send us more reports on this rig.   Chuck has been on the blog many times, with many projects:  https://solde...
1 comment:
Monday, April 29, 2024

Old Tricks, Lore, and Art -- Freezing and Baking our LC VFOs -- An Example from Cuba

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Pavel CO7WT explained why Cuban hams used a process of thermal endurance to improved the frequency stability of their homebrew rigs:    ----...
5 comments:
Wednesday, January 31, 2024

My Manhattan-style Termination Insensitive Amplifier Production Line

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  You gotta love the name, right?  It sounds like some sort of psychological condition.  Perhaps someone who just doesn't care  if his g...
3 comments:
Tuesday, September 26, 2023

F6CRP's FB Homebrew Receiver

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I like F6CRP's homebrew receiver.  I like the way he presents it (block by block) and I like the inclusion of the W7ZOI IF board. The JF...
2 comments:
Sunday, May 28, 2023

Jerry KI4IO (Wizard of Warrenton) Describes His ALL ANALOG Phasing Transceiver -- Bob Crane FDIM interview #3 (audio)

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Wow, this one really resonated with me.  Jerry had me won over when, early in the interview, he described his decision to dispense with the ...
1 comment:
Wednesday, April 26, 2023

Retro QRP Rigs of the 1960's, 70's, and 80's -- Video by Mike WU2D

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It is time to put aside (again!) all of the heated ideological arguments about the power level that defines "low power."  Just sit...
3 comments:
Monday, April 3, 2023

Technology and Methods from Wes Hayward W7ZOI

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Great stuff.  Lots of wonderful articles filled with wisdom to ponder.    http://w7zoi.net/oldtech/ponder.html Thanks to Tony G4WIF for spot...
1 comment:
Friday, February 10, 2023

SolderSmoke Podcast #243 -- HI7/N2CQR, uBITX mods for 10 meters, High-School Direct Conversion Receiver Project Launched (Success!) Mailbag

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  DC RX and one of the PTO boards we built as demos last night.  February 10, 2023 SolderSmoke Podcast #224 is available.  http://soldersm...
12 comments:
Saturday, October 15, 2022

DC Receiver: 100db Gain? Diplexer? VFO in a box?

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Here is a progress report on Direct Conversion Receiver developments. Dual Tuned Circuit, Diode Ring with Diplexer, PTO VFO from Farhan...
8 comments:
Thursday, October 6, 2022

Adding a Diode Ring to the Direct Conversion Receiver, And How the Diode Ring Works

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I take a look back at Wes Hayward's classic DC receiver from the November 1968 QST. I then try to describe how diode ring mixers work (...
2 comments:
Thursday, September 29, 2022

A Bout of Direct Conversion-ism in Northern Virginia -- DC Receivers Under Construction

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There I was, minding my own business,  when suddenly I was dragged into the construction of Direct Conversion receivers.  Here is a video ab...
Sunday, September 11, 2022

An Especially Good (Old) SolderSmoke Podcast

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February 22, 2008     -- We were in Rome.   -- I read a 1931 QST ad sent to me by my fellow "Hambassador" David Cowhig, WA1LBP; Da...
Thursday, September 1, 2022

New Video: Farhan's Presentation on the "Daylight Again" Analog Transceiver

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LOTS of tribal wisdom in this presentation by Farhan VU2ESE.  For more info, go to:  https://www.vu2ese.com/ index.php/2022/08/04/daylight- ...
1 comment:
Monday, August 22, 2022

Mike Caughran KL7R's Last Podcast

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  Mike KL7R (SK) during a visit to the AL7FS shack. This was Mike Caughran KL7R's last podcast. He died in a car accident shortly after...
1 comment:
Saturday, May 28, 2022

"Experimental Methods in RF Design" LADPAC Software Available FREE!

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We've frequently said that is pays to check the W7ZOI web site.  Tony G4WIF did just that and pointed us in that direction, noting that ...
Tuesday, March 22, 2022

Receiver Dynamics -- How Good is my Receiver?

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OK , so I've finished building my new 17-12 Dual Band SSB Transceiver.  I am now testing it out on both bands.   A big question I have i...
Tuesday, January 4, 2022

Exorcism Completed! Getting Rid of the Spur in my 17 meter SSB Transmitter using a TinySA (video)

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To re-cap:  The problem became evident when trying to "net" or "spot" my transmitter onto my receive frequency.   Arou...
5 comments:
Tuesday, December 28, 2021

How to Fix the Spur Problem in my 17 Meter SSB Transmitter?

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  I built the transmitter almost 20 years ago.  It is in the larger box, which originally housed a Heathkit DX-40.  There is a lot of soul i...
6 comments:
Tuesday, November 2, 2021

Farhan's Amazing Knack Story: From a Boyhood SW Receiver to the Design of the sBITX SDR

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The presentation starts at about the 4 minute point.  I think if I were only allowed to watch one YouTube video in the next year, I'd ma...
2 comments:
Monday, August 30, 2021

Adding Automatic Gain Control to the Termination Insensitive Amplifier

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  Earlier this month Paul VK3HN had a very interesting blog post about adding Automatic Gain Control to Termination Insensitive Amplifiers ...
2 comments: