USERS WebSDR

AIS = The Automatic Identification System is an automatic tracking system that uses transceivers on ships and is used by vessel traffic services (VTS).
AIS operates principally on two dedicated frequencies or VHF channels:

AIS 1: 161.975 MHz- Channel 87B (Simplex, for the ship to ship)
AIS 2: 162.025 MHz- Channel 88B (Duplex, for the ship to shore)


There is also AIS Long Range that uses short messages so theoreticaly the range can be higher.This is currently used much less.

channels (LR):

AIS 3: 156.775 MHz- Channel 75
AIS 4: 156.825 MHz- Channel 76

AIS detected by my local station click here. Another station in the area is PE0F click here.

Software used at my side is now the 2 channel (with AIS long range support) AIS Catcher from Jasper.

Some more info on AIS check the links bellow:

• AIS (Automatic Identification System) overview
• How AIS Works
• AIS = Automatic Identification System
• Build an AIS station
• Build an AIS Collinear Antenna
• Build an Fower Pot Antenna

RDD SDR

Used hardware

KerberosSDR v1.6	Ebay SDRplay	Example setup
Ham It Up V1.2	SpyVerter 2	DVstick33
Teleste OV-8420	X7000N 2m-8.3db / 70cm-11.7db / 23cm-13.7db	V2000 6m-2,1db / 2m-6,2db / 70cm-8,4db
Diamond D-130	Optiplex D790 [I7-8Gb]	Solar Cycle 25 conditions
FIFI SDR	MLA-30	SPRPlay 2
LimeSdr mini	SdrPlay RSP1A	BG7YZF RSPA1
6m Delta Loop

Dak webcam snapshot If active snap every 15min. Timestamp last image received :

ACARS

ACARS received over last hour(s) :


See above info in full new screen! Or see some ADSB stats received on 1090Mhz.

DAB+

DAB+ stations received here JO21ut:


Meer over DAB+ is ook op de MaasWaal.net website te vinden.
Bij een van de rondes was dit ook een onderwerp/presentatie.

Dutch DAB+ sations

Found 8 device(s):
  0:  RTL-SDR KerberosSDR   SN 00000001  A VHF/UHF/SHF X7000N
  1:  RTL-SDR KerberosSDR   SN 00000002  B AIS
  2:  RTL-SDR KerberosSDR   SN 00000003  C HF bands HyEndFed 10/80m
  3:  RTL-SDR KerberosSDR   SN 00000004  D 50Mhz/VHF/UHF or V2000
  4:  Realtek RTL2838UHIDIR SN 00000001  E HF bands 80 meter long wire 1:49
  5:  Realtek RTL2832U      SN 00001236  ADSB
  6:  Realtek RTL2838UHIDIR SN 00000001  ACARS
  7:  Realtek RTL2838UHIDIR SN 00000101  Radiosonde HAB
  8:  Realtek RTL2838UHIDIR SN 00000013  6m Delta loop
  
      SDRplay RSP1 Ebay model            F FM Broadcast / Fun on discone
      FIFI SDR                           HF bands MLA-30+ loop

For reference ADSB tool used on Linux (focal) is ModesDeco2 v20210307 click here to download.

Antennas used:

• HyEndFed for 10-80m length 23 meter. Height 17m sloping to about 5 meter (east/west)
• X7000N 2m-8,3db / 70cm-11,7db / 23cm-13,7db at about 18m NAP feed point
• Long wire about 80 meter (east/west) height about 5 meters above ground
• V2000 6m-2,1db / 2m-6,2db / 70cm-8,4db at about 16m
• Dedicated ADSB antenna at about 16m
• 2m Midland F-22 6.7dB antenna for ACARS at about 16m
• HB9CV 6m antenna at about 16m
• MLA-30+ active loop at 15m
• Cross yagi 2m 7 element 7EPS145X 10,2 dB F/B 17 dB antenna at about 17m
• Discone diamond D-130 6m 2m 70cm 23cm (RX 25-1300Mhz) at about 16m (dummyload :) )
• 6m delta loop antenna at about 8m
• 2m ca 3db Big Wheel (klaverblad) antenna at about 12m

The LOG (Loop On Ground) antenne really works well try it if you can fit it in your garden. Great RX antenna.
A bit more on LOG you can find here also. Receive examples to listen to : Click here.

Preamp used: (from another antenna system called Flag/Pennant LOOP)

Some video's on LOG
Video 1 loop on ground build.
Video 2 loop on ground compare.
Video 3 loop much bigger test.
Video 4 loop with preamp.

Convert a LOG antenna to a LIG (Loop In Ground) just put it about 2 cm under the soil :)

More details about the MLA-30+ circuit / antenna and more

---