Look around on 5.4 - 5.8 GHz with rtl-sdr

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

noxondab.jpg


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?
http://sdrsharp.com/index.php/downloads

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.

high-quality...jpg


Technical Specifications:

Input Frequency 5.8-6.1GHz
L.O Frequency 4505 MHz
L.O Stability ±1.5 MHz(-40 to +70/25)
Output Frequency 1295-1595 MHz
Noise Figure 0.4dB
Conversion Gain 50dB
Input VSWR 2.0:1
Output VSWR 2.0:1
Output Connector: F-female connector
Output Impedance 75 Ohms
Image Rejection 45dB
Phase Noise -95dBc/Hz@100kHz(max)/-75dBc/Hz@10kHz(max)
Supply Voltage 12 to 24V
Operating Temperature -40 to +70
Storage Temperature -40oC to +80oC
Relative Humidity 0%to95%

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)
antenna5-8ghz.jpg


6. Power injector, to power the converter on the output 75 Ohm coax cabel.(Home made)
injector.jpg



Frequency sources.

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:
TL-WA7510N "inside"
https://sites.google.com/site/tlwa7510inside/
"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"
tplinkpolc.jpg
tlwant.jpg



8.
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.
cameraadas.jpg
koenigvesz.jpg



Based on Richwave chipset, RTC6705 transmitter and  RTC-6715 receiver.
   
Product No:RTC-6715
http://www.richwave.com.tw/product_description.php?PNo=34
a cegnel nincs adatlap, de valaki valamikor szerzett egyet, es feltette:
http://www.flypix.co.uk/shikra/ftp/RTC6715-DST-001.pdf
rtcvevo.jpg
rtc6715block.png



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.

                                                                       CS[2:0]
        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
http://www.richwave.com.tw/product_description.php?PNo=39

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.
tvbwkep.jpg



The experiments

The receiver setup:
The converter with the antenna:
converter.jpg


The Noxon rtl-sdr with the power injector:
rtl-sdrtap.jpg


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
tlwa7510.jpg


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.
Some checkes:
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.
video58.jpg


Tue Jan 22 16:45:41 CET 2013

t.janos
Janos Tolgyesi hg5apz at gmail