Showing posts with label direct conversion. Show all posts
Showing posts with label direct conversion. Show all posts
Saturday, June 7, 2025

A FIRST! K1OA Contact with N2CQR -- All Homebrew with SolderSmoke Direct Conversion Receivers on Both Ends

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At around 0630 EDT on June 7, 2025 I heard K1OA calling CQ on 7030 kHz CW. This was exactly where I had a crystal.  I called him, but he did...
1 comment:
Friday, May 30, 2025

Hiss, Filters, QRM, and Hearing Loss: Do we need AF filters in direct conversion receivers?

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L6 is the 88mH toroid Messages on Discord about the need to knock down higher frequency audio response in the SolderSmoke direct conversion ...
1 comment:
Thursday, May 29, 2025

SolderSmoke Podcast #260 FDIM, Hollow State Design, Pete's Bench and the Shelf of Shame, Direct Conversion Project News, How Best to Preserve this Blog?, Dean's Bench and the Desk of Despair, Bill's Bench and the Garage of Grief, MAILBAG

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SolderSmoke Podcast #260 is available:  Audio version:  http://soldersmoke.com/soldersmoke260.mp3 Video version:  https://www.youtube.com/w...
6 comments:
Tuesday, May 27, 2025

Simplicity, Presence, Mods, and Direct Conversion Receivers

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Over on the Discord server that we set up for the SolderSmoke Challenge project.  One of the guys who succeeded in building the receiver (ku...
Tuesday, April 1, 2025

FCC to Ban Direct Conversion Receivers

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From the FCC News Line:   The Federal Communications Commission announced today that it will soon ban a wide range of communications equipme...
22 comments:
Friday, March 7, 2025

Homebrew Challenges Much Like Ours: The Direct Conversion Receiver of Wes Hayward W7ZOI and Dick Bingham W7WKR -- QST November 1968

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  https://www.worldradiohistory.com/Archive-DX/QST/60s/QST-1968-11.pdf I was thinking about some of the challenges faced by the builders of ...
3 comments:
Monday, March 3, 2025

Andy KB7ZUT is a Good Sport -- He Built the Direct Conversion Receiver HIS WAY, then OUR WAY. Great StarTrek Cartoons

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  Early on, Andy sent in a report on a Direct Conversion receiver that he had built.  It looked kind of like ours, but it was clearly NOT ou...
4 comments:
Saturday, March 1, 2025

Erik N2EPE's SolderSmoke Direct Conversion Receiver

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Erik built a really nice receiver.  I was glad that he took to heart our advice on the need for a large, insulating tuning dial.  He made on...

Ryan AC3NG's FB SolderSmoke Direct Conversion Receiver

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All the way through, Ryan displayed a desire to really understand each of the four circuits included in this receiver.  He wanted, as Maxwel...

Ken W4KAC's Wonderful SolderSmoke Direct Conversion Receiver -- with a Leaf Blower Tuning Dial

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Ken W4KAC tells me that the tuning knob that he used to minimize hand-capacitance effects on his PTO started out as a gear in a leaf  blower...
Friday, February 28, 2025

Jim KF8BOG Completes the SolderSmoke Direct Conversion Receiver after a Long, Hard Journey of Discovery

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Herodotus once said that "learning is not child's play -- we cannot learn without pain." I think Jim KF8BOG proved that in thi...

John W8UC Ends 48 Years of Appliance Operator status -- His beautiful build of the SolderSmoke Direct Conversion Receiver

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In many ways it was for guys like John W8UC that we launched this project.  These are guys who have been hams for a long time, but -- like m...
Thursday, February 27, 2025

VK4PG's Wonderful Australian Direct Conversion Receiver from Sunny Queensland

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It was really great to hear those Australian voices coming from Phil's receiver.  Check out the video above.  Phil writes:   Completion!...
2 comments:
Wednesday, February 26, 2025

Scott KQ4AOP Built the SolderSmoke Direct Conversion Receiver, and Listened to his FIRST EVER Ham Signals with it

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Scott KQ4AOP's build of this receiver is especially noteworthy, becasue he used the receiver to hear the very first ham radio signals he...
1 comment:

Matt NE3U (ex KY4EOD)'s SolderSmoke Direct Conversion Receiver (and his Globe-circling Balloons!)

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Matt was one of the first builders of this receiver (see above). He heroically stuck with the very small speaker that we had used in the hig...