From Newsgroup: sci.electronics.design

On Thu, 19 Feb 2026 10:39:29 +0100, Arie de Muijnck <noreply@ademu.nl>
wrote:

On 2026-02-19 05:39, john larkin wrote:

https://www.youtube.com/watch?v=a1_l8Qdsq5A

Thanks, a nice blast from the past. I build SSB side band filters from the war surplus.
They could be trimmed slightly down by electro-depositing silver on the contact surfaces.
Grinding was much too complex.

The crystal radio shown in the documentary is wrong - galena is not quartz.

Arie

We buy a 3x2 mm smt xo for 59 cents. They are all within about 2 PPM
of 16 MHz. That's amazing.


John Larkin
Highland Tech Glen Canyon Design Center
Lunatic Fringe Electronics
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From Newsgroup: sci.electronics.design

On Wed, 18 Feb 2026 20:39:07 -0800, john larkin <jl@glen--canyon.com>
wrote:

https://www.youtube.com/watch?v=a1_l8Qdsq5A

John Larkin
Highland Tech Glen Canyon Design Center
Lunatic Fringe Electronics

test.

John Larkin
Highland Tech Glen Canyon Design Center
Lunatic Fringe Electronics
--- Synchronet 3.21b-Linux NewsLink 1.2

From Newsgroup: sci.electronics.design

On Thu, 19 Feb 2026 08:30:01 -0800, john larkin <jl@glen--canyon.com>
wrote:

On Thu, 19 Feb 2026 10:39:29 +0100, Arie de Muijnck <noreply@ademu.nl>
wrote:

On 2026-02-19 05:39, john larkin wrote:

https://www.youtube.com/watch?v=a1_l8Qdsq5A

Thanks, a nice blast from the past. I build SSB side band filters from the war surplus.
They could be trimmed slightly down by electro-depositing silver on the contact surfaces.
Grinding was much too complex.

The crystal radio shown in the documentary is wrong - galena is not quartz. >>
Arie

We buy a 3x2 mm smt xo for 59 cents. They are all within about 2 PPM
of 16 MHz. That's amazing.

John Larkin
Highland Tech Glen Canyon Design Center
Lunatic Fringe Electronics

test again


John Larkin
Highland Tech Glen Canyon Design Center
Lunatic Fringe Electronics
--- Synchronet 3.21b-Linux NewsLink 1.2