Showing posts with label Evans-- Grayson. Show all posts
Showing posts with label Evans-- Grayson. Show all posts
Monday, December 9, 2024

Listening to 40 meters on the DC Receiver -- And I Heard a Distinguished Homebrewer!

›
I made the video above to show postential builders how useful our Direct Conversion receiver really is.   Late in the video (starting at 11:...
1 comment:
Friday, November 8, 2024

Using a Photomultiplier THERMATRON to Detect Single Photons

›
I've been a fan of Jeroen's YouTube channel for a while now.  He has a very nice approach, combining theoretical knowlege with pract...
Thursday, September 5, 2024

Excellent New Video from Grayson KJ7UM on his Thermatron version of the Michigan Mighty Mite

›
Here is a really wonderful video from Grayson Evans, KJ7UM, author of Hollow-State Design for the Radio Amateur.   I really loved this video...
1 comment:
Monday, February 19, 2024

Grayson Evans KJ7UM Video on Homebrewing with Thermatrons

›
Grayson Evans KJ7UM is the author of Hollow-State Design for the Radio Amateur, a wonderful book about using Thermatrons (aka tubes, or val...
2 comments:
Saturday, February 17, 2024

Nate KA1MUQ's Amazing Thermatron Receiver

›
https://natesbasement123.blogspot.com/2024/02/thank-you-bill-dean-grayson-pete-and.html Wow, some really wonderful work is taking place in N...
1 comment:
Friday, November 10, 2023

SolderSmoke Podcast #249 -- Travel, Pete's 6BA6 rig, Books!, VFOs, SDR, Computers, Spectrum Analysers, Transistor Man! MAILBAG

›
New VFO for 15-10 Transceiver Schematic below SolderSmoke Podcast #249 is available:  http://soldersmoke.com/soldersmoke249.mp3 There is als...
9 comments:
Sunday, June 4, 2023

Can you ID this Receiver? Grayson Finds a Homebrew Receiver in Germany. From the GDR. Circuit? Schematic? Thermatrons?

›
  Grayson Evans KJ7UM (the author of  Hollow State Design ) was recently in Germany where he spotted this museum display of a homebrew recei...
2 comments:
Sunday, August 28, 2022

Building a Solid-State "Magic Eye" and Fitting it in the Old Tube's Glass Envelope

›
I was feeling kind of bad about my solid-state conversion thoughts.  I had gone so far as thinking about putting an FET and some resistors i...
Saturday, August 20, 2022

TRIGGER WARNING: Solid-Stating Old Tube (Thermatron) Gear (Including -- GASP -- R-390As)

›
Look at that.  Well, maybe some of you shouldn't. (I'm thinking of you Grayson.)  I found the Charles Smith YouTube channel while in...
6 comments:
Monday, June 27, 2022

Pete N6QW's Hybrid Wireless Set -- A Thing of Beauty, with Thermatrons

›
Pete Juliano is amazing.  He is admirably carrying a very heavy load of family responsibilities.  But  he still can build some really unique...
3 comments:
Tuesday, June 7, 2022

SolderSmoke FDIM Interviews: A BRAVE HAM! Grayson Evans KJ7UM Presents a 50 Watt Amplifier to THE QRP GROUP!

›
Wow, talk about walking into the lions' den!  Grayson Evans, author of "Hollow State Design" and guru of all things thermatron...
1 comment:
Monday, February 14, 2022

6EA8s in the Mate for the Mighty Midget, and WA9WFA Re-Builds a Heath HW-12

›
I reported to Scott and Grayson that I had finally gotten around to changing the three aging 6U8 tubes in my Mate for the Mighty Midget rece...
Sunday, November 21, 2021

KG7TR's Magnificent 75S-2B Receiver -- Tubes, an Si5351, an Arduino, a Bit of Collins, and a Bit of a Drake 2-B

›
  Oh man, I share this with much trepidation because the last time I posted something about the work of Mike KG7TR ,  Pete N6QW said he fel...
3 comments:
Friday, August 27, 2021

SolderSmoke Podcast #232 -- Mythbuster, Pete's Tube CW Rig, Pete's DC RX and Simple SSB Rig, NanoVNA and TinySA, Very FB Mailbag

›
SolderSmoke Podcast #232 is available -- Crank it in Robert! http://soldersmoke.com/soldersmoke232.mp3 Featuring a guitar intro by Pete ...
1 comment:
Thursday, August 12, 2021

Grayson Evans KJ7UM on the Ham Radio Workbench Podcast

›
  OM Grayson was on the HRWB podcast with George Zaf and company. This was a really informative and entertaining session.  For example, when...
Monday, March 15, 2021

Aladdin's Lamp == The Vacuum Tube (aka The Thermatron) (Video)

›
After our posting of the video about 1957 transistor production, our friend Peter O'Connell VK2EMU asked for some equal time for vacuum ...
1 comment:
Friday, December 18, 2020

Grayson Evans KJ7UM's New Blog -- Lots of Great Technical Info

›
  Our friend Grayson Evans KJ7UM, author of "Hollow State Design"  has launched a new blog.  It is filled with great technical inf...
Tuesday, September 8, 2020

Builds Oscilloscope at age 12! Nick has THE KNACK

›
Thanks to Grayson Evans for sending us this very encouraging video.   It is from Tektronix;  I wonder if Alan W2AEW provided some ideas a...
1 comment:
Saturday, September 28, 2019

Radio Art -- Zenith Tube Ad

›
This ad was recently shown on the K9YA Telegraph .  I was wondering about its origins.  I asked noted thermatron guru Grayson Evans -- he...
Thursday, June 2, 2016

Manhattan-style Vacuum Tubes: "An Evolution of Thermatron Homebrew Techniques" by Grayson Evans

›
Grayson Evans was at Dayton.  Scheduling problems prevented him from being interviewed by ace correspondent Bob Crane, but Grayson wa...
2 comments: