This is a short summary of my experiments, to "look around" on 5.8 GHz frequency range with a cheap downconverter and a rtl-sdr receiver.
The components for this experiment:
1. rtl-sdr dongle:
I used Noxon DAB Stick
Bus 001 Device 012: ID 0ccd:00b3 TerraTec Electronic GmbH
0x0ccd 0x00b3 FC0013 Terratec NOXON DAB/DAB+ USB dongle (rev 1)
Fitipower FC0013 22 - 1100 MHz (FC0013B/C, FC0013G has a separate L-band input, which is unconnected on most sticks)
Info from here: http://sdr.osmocom.org/trac/wiki/rtl-sdr
It seems, my pice a good one, because it can control to receive on 1350 MHz
2. SDR# with the osmocom rtl-sdr tools,
specially with rtl_tcp.exe Advantage: Online messages in the DOS window, help to follow, are the frequency sets correct?
3. 5.8 GHz converter.
This is a cheap, far-east modell, working on 5.8 -- 6.1 GHz and convert this frequency range to 1295 -- 1595 MHz range. http://www.aliexpress.com/store/product/high-quality-5-8-6-1Ghz-customized-lnb/402505_681049078.html
Product Description: customized lnb 5.8-6.1 GHz lnb, special design, high quality, competitive price.
There are two version:
# output frequency: 695-1295Mhz or 1295-1595Mhz or others
Producer: Anhui Bowei Electronics Technology Co., Ltd.
5. Small GP antenna for 5.8 GHz. (Home made)
6. Power injector, to power the converter on the output 75 Ohm coax cabel.(Home made)
I need for this experiments some frequency sources wich are "controlable", at least I can see when I swicth it on or off.
7. TP-Link TL-WA7510N AP
This is an Access Point for 5.8 GHz frequency range. You can choose lot of frequencies, see here on my notes about it:
"The TL-WA7510N features a 15dBi dual-polarized antenna, which is a key feature used in building a long-distance Wi-Fi connection. It is designed with signal transmission covering 60 degrees on a horizontal plane and 14 degrees on a vertical plane, improving signal strength in a concentrated direction.15dBi High-gain Antenna"
Koenig analog video transmitter/receiver
Wireless video transmitter KOENIG or Konig 5.8 GHz Wireless A/V System. This is an old model, havenot round patch antenna outside.
Based on Richwave chipset, RTC6705 transmitter and RTC-6715 receiver.
a cegnel nincs adatlap, de valaki valamikor szerzett egyet, es feltette:
The available frequencies:
Channel Selection Table
When pin 7 (SPI_SE) is set at low voltage, the chip works as in the easy channel selection mode and the
pins 4(SPIDATA/CS0), 5(SPILE/CS1), 6(SPICLK/CS2)，48(S) and 8(BX) are used for channel selection.
Channel frequencies refer to below table.
SPI_SE Band BX S
000 001 010 011 100 101 110 111
0 A 0 0 5865M 5845M 5825M 5805M 5785M 5765M 5745M 5725M
0 B 0 1 5733M 5752M 5771M 5790M 5809M 5828M 5847M 5866M
0 E 1 X 5705M 5685M 5665M 5645M 5885M 5905M 5925M 5945M
The three wire SPI control pins
1 SPI X X
On the Koenig devices there are only 2 DIP swiches to choose the frequnencies, this are 4:
001 011 101 111
5.752 5.790 5.828 5.866
The transmitter ic: RTC6705
8. Small black/white camera with 20 m coax and remote power injection. This is the signal source for the Koenig transmitter.
9. Small old TV set, to check the B/W camera picture in the receive side.
The receiver setup:
The converter with the antenna:
The Noxon rtl-sdr with the power injector:
A. Recieve the TP-Link AP-s packets, transmiting on some 5.8 GHz channels
With the SDR# need to tune the rtl-sdr dongle to the 1349 -1355 MHz to see the packets
B. Receive the Koenig video transmitting system,s signal on 5.8 GHz range
Tune the dongle to the 1352 MHz to receive the wide band video transmission.
If I move the camera, the transmitted contains changed on the SDR# windoews. If I swich off the transmitter, the signal on the FFT windoew will be stop.
Tue Jan 22 16:45:41 CET 2013
Janos Tolgyesi hg5apz at gmail