This is one of the few times I see someone cleverly/very smart winding a bobbin! with tapered cones to keep the coil shape centered AND with a good mounting frame... ( that you didn't add a crank lever to it by the way? ) Should I honestly say something more: Often beginners only make 1 or 2 coils and such an arrangement is overdone! BUT for multiple coil windings this is or can be a great success! (and besides, it's not THAT much effort to make!) Friendly greetings from The Netherlands! R. Rob
I just wrapped my coil on a glass tube. That was a nightmare. Glue doesn’t stick, tape doesn’t stick, and you can’t drill holes to feed the wire through for an anchor. At least I got to do it while you were wrapping yours experiencing the same hand cramps. Ha
Yes, BUT glass is soooooo cool! And you can use a clear lacquer to hold the wire in place. You can wrap the ends with thread and glue to keep those from unwrapping.
@@tsbrownie that’s a good idea. I’m not finished yet, but it’s not looking up to my standard so far. I can see myself redoing it all later this week. But I’ll keep it for now as I find progress toward a working radio is important for motivation. I can always remove whatever component is causing me trouble and rebuild it at the end of the project. That’s just how I’m “wired”. Ha
When I was a kid, we tried to wind 2 wires together, then you would remove the "spacer" wire. It works but the coil is hard to wind, has to be much longer, it is harder to tune, and no matter how good the glue was, it would fail somewhere.
Best/Easiest DIY Crystal Radio - No Batteries, No External Power (4K)
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Beautifully wound and shiny coil! Well done sir. 👍
I appreciate your appreciation! ;)
This is one of the few times I see someone cleverly/very smart winding a bobbin!
with tapered cones to keep the coil shape centered AND with a good mounting frame...
( that you didn't add a crank lever to it by the way? )
Should I honestly say something more:
Often beginners only make 1 or 2 coils and such an arrangement is overdone!
BUT for multiple coil windings this is or can be a great success! (and besides, it's not THAT much effort to make!)
Friendly greetings from The Netherlands!
R. Rob
The handle knob was weak and I did not trust it. It broke later when I tested it.
Very nice coil. You will definitely get great circuit goodness
I just wrapped my coil on a glass tube. That was a nightmare. Glue doesn’t stick, tape doesn’t stick, and you can’t drill holes to feed the wire through for an anchor. At least I got to do it while you were wrapping yours experiencing the same hand cramps. Ha
Yes, BUT glass is soooooo cool! And you can use a clear lacquer to hold the wire in place. You can wrap the ends with thread and glue to keep those from unwrapping.
@@tsbrownie that’s a good idea. I’m not finished yet, but it’s not looking up to my standard so far. I can see myself redoing it all later this week. But I’ll keep it for now as I find progress toward a working radio is important for motivation. I can always remove whatever component is causing me trouble and rebuild it at the end of the project. That’s just how I’m “wired”. Ha
I would use doublesided extreme strong sticky tape to hold the coil in place. A little distance between each winding would increase the Q-factor.
When I was a kid, we tried to wind 2 wires together, then you would remove the "spacer" wire. It works but the coil is hard to wind, has to be much longer, it is harder to tune, and no matter how good the glue was, it would fail somewhere.
Thanks!
You are welcome.
Can you provide a list of suppliers of blue pipe?
use a thin leather glove, save your thumb