Mt Ginini

This article provides some basic directions for locating the ACT/NSW border in the region of the summit of Mt Ginini where amateur radio activities would usually be located.

Fig 1: Mt Ginini from ACTMAPi

Fig 1 is from ACTMAPi and shows the border in the region of the Airservices Australia (AsA) compound. The summit road approaches the compound on its south eastern fenceline.

The area south of the AsA compound is of interest for radio paths to the south west, eg Melbourne, Geelong and west (eg Adelaide, Perth).

Table 1: Key border vertices
Location	Latitude	Longitude
Southern corner of ASA compound	35°31'47.48S"	148°46'20.08"E
Next southern vertex	35°31'52.73S"	148°46'18.96"E

Table 1 shows the key border vertices for the southern area of the summit. The border south of the southern corner of the AsA compound is a straight line from the corner for 162m at a bearing of 181.6°T or 162.9°M.

Fig 2: Visual horizon from Mt Ginini

Fig 2 is the visual horizon from Mt Ginini from RadioMobile based on SRTM data. Propagation to the south is obstructed by Mt Gingera just 5km south. The visual horizon is raised from about 160° (Malacoota) to about 187° (Hobart).

Fig 3: Prediction of a troposcatter path to Barabool Hills

Fig 3 shows Radiomobile predictions for a 500km troposcatter path to Barrabool Hills near Geelong.

The receive threshold of -137dBm is the total noise power at the antenna connector for a 2kHz wide receiver, system noise temperature of 80K and ambient noise temperature of 290K. Contacts should be possible with traditional CW using a 200Hz wide filter to about 10dB below this threshold, and with JT65B to more than 25dB below this threshold.

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