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     Peter Miles
     Northam, Western Australia

     

 

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VK6RAV - AVON VALLEY REPEATER - 147.275MHz

Operational details of local repeater VK6RAV.

HOME  > OPERATIONAL > LOCAL REPEATERS>

 

Call : VK6RAV
Frequency (MHz) : 147.275
Service Area : Avon Valley, Western Australia
Site :  Hoddys Well
Linking : AllStar node: 45472
Sponsor :  West Australian Repeater Group (WARG)
Email :
Web site :  http://www.warg.org.au
Note : 

APRS: 145.175 MHz

APRS Info: https://aprs.fi/info/a/VK6RAV-3

KiwiSDR (Remote HF receiver): http://vk6seg.proxy.kiwisdr.com:8073/

 

Technical

Output Frequency (MHz) : 147.275
Input Frequency (MHz) : 147.875
Power (Watts) : 20W
Time Out : 3 min
CTCSS Access (Hz) : Open
Latitude : -31.63559928
Longitude : 116.49225623
Location: 
HASL (m) : 430
 

 

The above radiation foot-print was produced using Radio Mobile

See comparative information of former site at Crowns Nest Hill

 

Site and equipment information.

Photo 1  Equipment rack as at 14 November 2024

 

Fig 1  Single line diagram of equipment arrangement as at 14 November 2024.

 

Broadband Link

Fig 2 The above Link Study for the 5.2GHz broadband link between the VK6RAV repeater site and Northam was produced using Radio Mobile

 

Link Study Performance

Distance: 18.6 km
Precision:  10.0 m
Frequency: 5200.0 MHz
Equivalent Isotropic Radiated Power: 87.916 W
System gain: 186.46 dB
Required reliability: 90.000 %
Received Signal: -75.46 dBm
Received Signal:  37.76 μV

 

Installed Ubiquiti link status measurement.

 

54m site tower (Worlds tallest / skinniest tower).                  21 July 2026. 5.2GHz broadband Ubiquiti link antenna. 21 July 2026
Town of Northam 15km to the east of the VK6RAV site. 21 July 2026

 

Tower guy wires

Fig 3  Tower guy wire details

 

Guy wire group

Distance from tower base to ground attachment (Mtr)

Tower attachment above ground (Mtr)

Guy wire length (Mtr Rounded up to 3 decimal place)

Guy wire length plus 5m termination tails (Mtr Rounded up to 1 decimal place)

1

20.22

4.790

20.780

25.8

2

20.22

9.280

22.248

27.3

3

20.46

13.770

24.663

29.7

4

20.46

18.260

27.424

32.5

5

20.72

22.750

30.772

35.8

6

20.72

27.240

34.225

39.3

7

30.16

31.730

43.777

48.8

8

30.16

36.220

47.133

52.2

9

30.4

40.710

50.809

55.9

10

30.4

45.200

54.473

59.5

11

30.66

49.690

58.388

63.4

12

30.66

54.180

62.254

67.3

Table 1  Tower guy wire details

 

Jim (VK6CA) Setting the tower guy wire tension. 24 May 2014

 

Site and equipment photos: VK6RAV PHOTOS

 

Some works that have been completed at the VK6RAV site.

2014 Project to replace deteriorated tower guy wire and install new 2m band co-linier antenna:  vk6rav_maintenance_2014.htm

May 2024 project to upgrade the DC distribution board: dc_distribution_vk6rav20240514.html

March 2025 project included a DC line filter to attenuate regulator noise: VK6RAV DC Line Filter

 

 

Video of the VK6RAV general site and tower.

  

 

TOP OF PAGE

Page initiated 1 July, 2014 

Page last revised 12 September, 2026

 
 

   Space Weather

   https://www.swpc.noaa.gov/

    

James Chadwick born 20 Oct 1891

Was a British physicist who discovered the neutron in 1932, revolutionising our understanding of the atomic nucleus and paving the way for major advances in nuclear physics. He won the 1935 Nobel Prize in Physics.

   Notice Board

VK6YSF JS8Call and Olivia 8/250 operations.

Current activity is generally focused - though not restricted to - JS8Call operations on the 20, 40m and 80m bands.

Olivia 8/250 is used occasionally on the 20m band.

Proposed band and mode activity is often communicated on HamSpots: https://hamspots.net/js8/ or my profile on 

X: https://x.com/vk6ysf97230 .  

Post date: 14 October 2026

 

Local Repeaters

Repeaters Page Updated - Expanded and refreshed information on VHF and UHF repeaters across Western Australia's Central Coast, Perth, the Avon Valley, and the Peel region. New AllStar Link information has also been added, including linked repeater details and gateway information across the State.

Repeaters details:

https://vk6ysf.com/local_repeaters.htm

 

AllStar Link notes:

https://vk6ysf.com/allstar_notes-20260703.htm

 

Post date: 14 October 2026

 

Western Australian SSTV net 

Popular Western Australian SSTV net for both digital and anolog SSTV.

Generally found at 7214.0kHz LSB every afternoon from 08:00 UTC (4:00pm WST)

For more details: https://www.wasstv.net/wasstv.net/index.html

Post date: 8 December 2025

 

VK6MJM LF (136kHz) and MF (474kHz) Beacon

VK6MJM is a  LF/MF station located in Manjimup, Western Australia.

Common Mode: FST4W 300 (Similar to WSPR)  

Note: other modes and sub-modes may be used.

Station details were presented by Peter Hall (VK6HP) at PerthTech 2024.Presentation PDF: Peter Hall VK6HP at PerthTech

QRZ Page: VK6MJM on QRZ.com

Post date: 10 March 2025

 

 

 
 

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Amateur Radio Station VK6YSF - Promoting amateur radio communication and experimentation.