Should the ends of air coil inductor be unsheathed or stripped?

Okay then the answer is still yes for the coil be very careful when you handle the wire you do not want to Nick the enamel coating along the length of the magnet wire so I would put some tape over the drill bit itself if you're going to use a drill bit. I would use some 1000 grit sandpaper to take off the enamel coating. Did your unit happen to come with a schematic? Which is different from the assembly instructions.
 

Thread Starter

bypassrestrictions

Joined Jun 1, 2021
28
Okay then the answer is still yes for the coil be very careful when you handle the wire you do not want to Nick the enamel coating along the length of the magnet wire so I would put some tape over the drill bit itself if you're going to use a drill bit. I would use some 1000 grit sandpaper to take off the enamel coating. Did your unit happen to come with a schematic? Which is different from the assembly instructions.
The kit didn't come with any instructions or schematics.
 

sparky 1

Joined Nov 3, 2018
539
I scratch the enamel with a razor blade using light pressure then using crisp 400 sand paper before using soldering iron apply just enough
to apply 1/4" when it is installed the coil is about 1/8" above the board. On the ferrite toroid practice with some different colored wire and check the picture closely this way you get it right without wasting your enamel wire.
 
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That wire is "Magnet" wire, not magnetic wire. and the instructions use the word weld where it should say solder. It is certainly a very interesting project, I would purchase one for myself if you can share the source.

You will indeed need to remove the insulation from the wires.
For the wires, in each case, I suggest tinning ( getting the wires solder coated) for the ends of the wires that will be soldered to the board, before mounting the coils on the circuit board. That will allow you to solder them in place with a minimum of heat.
 

Thread Starter

bypassrestrictions

Joined Jun 1, 2021
28
That wire is "Magnet" wire, not magnetic wire. and the instructions use the word weld where it should say solder. It is certainly a very interesting project, I would purchase one for myself if you can share the source.

You will indeed need to remove the insulation from the wires.
For the wires, in each case, I suggest tinning ( getting the wires solder coated) for the ends of the wires that will be soldered to the board, before mounting the coils on the circuit board. That will allow you to solder them in place with a minimum of heat.
They are available on Amazon and Ali Express.
 

SamR

Joined Mar 19, 2019
3,401
I bought an SDR from AliX and played with it a bit and found it not near as receptive as my Icom IC-R75 all band receiver running under Ham Radio Deluxe controls with a sloper antenna. But then you get what you pay for... Considering buying a Tram 1411 Broad Band Discone Antenna to use along with the sloper and longwire for the R75 and SDR.

FWIW
 
You will indeed need to remove the insulation from the wires.
For the wires, in each case, I suggest tinning ( getting the wires solder coated) for the ends of the wires that will be soldered to the board, before mounting the coils on the circuit board. That will allow you to solder them in place with a minimum of heat.
Solder pot comes to mind.
 
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