@GilmourTrueHD The one shown is 600 ohm : 600 ohm from a modem card. Lowest resistance side of coil is best. DC resistance was 100 ohms measured with ohm meter Any standard ratio 600:600, 8 ohm :1K or 8 ohm : 1.2K pretty well. Experiment with different ones. Have fun.
A Radio Shack miniature audio output transformer, Catalog #: 273-1380 ($2.99) is ideally suited for this project. The 8 ohm secondary goes in series to the red wires, the primary (1k ohm) to the audio output. This also makes a great transformer for eliminating ground loops from tapping off a speaker to recorder.
so the objective of this is to listen people talk on the phone in your neighbour hood?
ShootAllQueers 1 year ago
Great video highly elaborate thanks.
G5ive1 1 year ago
Thanks much!
fships 1 year ago
@fships Your welcome
X2YeZCAMCNC 1 year ago
Just noticed now the time is 611...wild eh
X2YeZCAMCNC 1 year ago
Cool, thanks much!
GilmourTrueHD 1 year ago
@GilmourTrueHD Your welcome
X2YeZCAMCNC 1 year ago
You said any step up under 100 ohms will work. Any particular coil ratio needed?
Cool vid, thanks.
GilmourTrueHD 1 year ago
@GilmourTrueHD The one shown is 600 ohm : 600 ohm from a modem card. Lowest resistance side of coil is best. DC resistance was 100 ohms measured with ohm meter Any standard ratio 600:600, 8 ohm :1K or 8 ohm : 1.2K pretty well. Experiment with different ones. Have fun.
X2YeZCAMCNC 1 year ago
A Radio Shack miniature audio output transformer, Catalog #: 273-1380 ($2.99) is ideally suited for this project. The 8 ohm secondary goes in series to the red wires, the primary (1k ohm) to the audio output. This also makes a great transformer for eliminating ground loops from tapping off a speaker to recorder.
Ragrog105 1 year ago