detektor
Developed as part of the detektors project with Shintaro Miyazaki, the detektor is now available for purchase as a pre-built and fully tested module for full spectrum exploration of the electromagnetic domain.
The detektor renders audible both low frequency emissions (using on-board coil and amplifier) and higher, broadband signals (for example, mobile phone signals, wireless networks, bluetooth) from around 100 MHz to 3 GHz using a logarithmic detection chip and on-board antenna.
Order
65 euros with free postage:
24 in stock
The shop is closed until 18th May 2013. Please feel free to pre-order for delivery after that date.
Sounds like
Earlier prototypes of the detector were used to make all the mapped recordings which you can hear online at:
For example:
High frequency: http://detektors.org/?cat=5
Low frequency: http://detektors.org/?cat=13
The detektor available here finalises the design and adds adjustable attenuation to the AD8313 high frequency detection chip.
Rough guide
Either signal can be monitored from the headphone socket, with one switch selecting low or high frequency domain; both signals can be recorded as a stereo pair from the other socket. With twin potentiometers, adjustments can be made for high frequency signal attenuation and headphone volume. The detektor is powered by three AAA batteries.
Hardware
Schematic and design
The schematic and PCB design (all licensed under the GPL) are available from:
Parts list
Capacitors
- 1nF x1 (0805)
- 680pF x2 (0805)
- 100nF x6 (0805)
- 47nF x1 (0805)
- 1uF TANTAL x4 (segor:TA1u0-35A SMD)
- 47uF TANTAL x1 (segor)
IC
- LED 0805 x1
- AD8313 x1 (ebay)
- OP27 x1 (SMD)
- LM386 x1 (SMD)
- LM358 x1 (SMD)
Resistors
- 10R x3
- 47R x1
- 100R x1
- 330R x1
- 1K x1
- 4.7k x1
- 10k x4
- 15k x1
- 22k x1
- 47k x1
- 100K x1
(all 0805)
misc
- 100k POTI x1 (segor=PT10MV-100k)
- 10k POTI x1 (segor=PT10MV-10k)
- steckachse (5116 sw) x2 (segor)
- inductor (L-11P 100M) x1
- klinkenbuchse 3,5mm (EBS 35) x2
- battery pack (3xAA = HALTER 3XAAA) x1
- switches (ALPS ebay) x2
PCB
Make your own PCB or purchase for 17 euros (with free shipping worldwide):
Date: 2013-05-20 18:36:48 BST
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