From Newsgroup: comp.os.linux.advocacy

On Thu, 16 Oct 2025 23:26:56 +0000, Tyrone wrote:

I have so many headphones here I never run into this "issue". I have multiple buds and multiple headphones.

Good for you. Everyone isn't a millionaire with disposable incomes living
the high life with no financial worries like you seem to be. I just wanted
to know how to charge my headphones using Bluetooth radio waves instead of having to laboriously be forced to manually plug them into a charger all
the time.

If I wanted advice on how to spend hundreds and hundreds of dollars I
would have asked for that.
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From Newsgroup: comp.os.linux.advocacy

On Thu, 16 Oct 2025 10:14:24 +0000, vallor wrote:

I'm not sure, but I think you can do it with a good longwire antenna, a
good earth ground, and a diode.

Re-arranging those parts in various configurations should eventually
give you some dc current in the right direction.

Is there an app for that, or maybe a Flatpak in Mint's repository?
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From Newsgroup: comp.os.linux.advocacy

vallor wrote:

I'm not sure, but I think you can do it with a good longwire
antenna, a good earth ground, and a diode

Aww, I have fond memories of my little crystal radio, as a child. I'd
listen to some music at bedtime. It was like magic.

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From Newsgroup: comp.os.linux.advocacy

On 2025-10-21, chrisv <chrisv@nospam.invalid> wrote:

vallor wrote:

I'm not sure, but I think you can do it with a good longwire
antenna, a good earth ground, and a diode

Aww, I have fond memories of my little crystal radio, as a child. I'd
listen to some music at bedtime. It was like magic.

Same here.
I would connect it to the cast iron steam heat radiators in the house I lived in.
Amazing how well they worked.

BTW I can still smell the scent of the steam especially during the winter
when we would put our snow suits on them to dry out.

Good times!
--
pothead
"I have a lot of friends who are Democrats, and they’re idiots.
I always say they have big hearts and little brains.
Almost every single policy rolled out failed.”

-- Jamie Dimon CEO JPMorgan Chase.
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From Newsgroup: comp.os.linux.advocacy

On Tue, 21 Oct 2025 16:27:34 -0500, chrisv wrote:

vallor wrote:

I'm not sure, but I think you can do it with a good longwire antenna, a >>good earth ground, and a diode

Aww, I have fond memories of my little crystal radio, as a child. I'd
listen to some music at bedtime. It was like magic.

https://www.flickr.com/photos/51764518@N02/albums/72157645789681870/with/ 8287123783

I had the Hear-Even version but mine was fancier -- the shell halves were green and yellow. I think it was earlier than the ones that really got
into the rocket motif. Clip the lead to the radiator, stick in the
earphone, and listen to that rock'n'roll stuff when I should have been sleeping. It beat Rosemary Clooney, Doris Day, and the stuff featured on
the Lucky Strike Hit Parade.
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From Newsgroup: comp.os.linux.advocacy

rbowman <bowman@montana.com>wrote:

On Tue, 21 Oct 2025 16:27:34 -0500, chrisv wrote:

vallor wrote:

I'm not sure, but I think you can do it with a good longwire antenna, a >>>good earth ground, and a diode

Aww, I have fond memories of my little crystal radio, as a child. I'd
listen to some music at bedtime. It was like magic.

https://www.flickr.com/photos/51764518@N02/albums/72157645789681870/with/ >8287123783

I had the Hear-Even version but mine was fancier -- the shell halves were >green and yellow. I think it was earlier than the ones that really got
into the rocket motif. Clip the lead to the radiator, stick in the
earphone, and listen to that rock'n'roll stuff when I should have been >sleeping. It beat Rosemary Clooney, Doris Day, and the stuff featured on
the Lucky Strike Hit Parade.

A few years back I ordered 2 crystal earphones from ebay:
ebay.com/itm/383632764280?_skw=crystal+earpiece
Those work OK, but I do prefer my Sennheiser HD201 headphones and smaller earpieces.
I grew up the same way, listing with my crystal earpiece to AM radio at night, used the metal bed matras as antenna.
Listened to interesting radio plays about aliens too.
Looking into the future, was in the fifties..
The problem with using those earpieces for the OP's frequency and encoding
is that that needs some electronics and that is where most of the power goes, For mono you could likely use a small low power AM transmitter and crystal radio.


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