Cheap DIY RF detectors

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Cheap DIY RF detectors

Merializer
I came across a couple of videos some might find interesting:

1) Point contact mixer diode 1N3747 used for DIY RF antenna.
https://youtu.be/xYjEkg7FuM0

2) Simple RF Detector with a detector diode and an LED.
https://youtu.be/vHVmJ5lD9jc
(This person does not believe in EHS, but makes interesting videos, he has a couple more).
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Re: Cheap DIY RF detectors

Fog Top
Very interesting videos, Merializer!  Now I wonder why a plastic German high-frequency analyzer cost me $400?


From: Merializer [via ES] <ml+[hidden email]>
Sent: Sunday, January 12, 2020 8:10 PM
To: Fog Top <[hidden email]>
Subject: [ES] Cheap DIY RF detectors
 
I came across a couple of videos some might find interesting:

1) Point contact mixer diode 1N3747 used for DIY RF antenna.
https://youtu.be/xYjEkg7FuM0

2) Simple RF Detector with a detector diode and an LED.
https://youtu.be/vHVmJ5lD9jc
(This person does not believe in EHS, but makes interesting videos).


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Re: Cheap DIY RF detectors

kjgartner
In reply to this post by Merializer
i actually went looking for that 1N3747 military surplus mixer diode, but I think the only stock comes from people salvaging old equipment.  Amazing how simple the circuit is.  Magic!

My long-term fantasy is that after the election season is over in 2020, we take all those useless lawn signs for candidates and repurpose them into RF meters with red/yellow/green LEDs.  If everyone in a neighborhood had one it would be much more obvious how pervasive those signals are.  The 1N3747 video sparked my hope, but I am not yet handy enough to improvise on this idea.  But some day maybe ...