Transmitting Antennas

Transmission masts at Auckland Radio, 29 August 1946.

Transmission masts at Auckland Radio, 29 August 1946. Photo: Whites Aviation

The Oliver Road transmitting site of Auckland Radio ZLD had a selection of 29 aerials spread over an area of 35 acres. Miles of underground cables connected the transmitters with the main building.

The area of the transmitting site covered what is now the Ocean Point sub-division, existing transmitting paddock and the playing fields at Maclean’s College.

19 August 1946. Photo: Whites Aviation

19 August 1946. Photo: Whites Aviation

MPRG member Paul Chamberlain ZL1BBR, who was a technician at Auckland Radio, recalls that the Dansk and Nautel MCW transmitters each had their own Marconi Tee antennas (similar to the 500 kHz amateur radio antenna which can now be seen at Musick Point). Each antenna had a tuner inside a small hut at the feed point.

The tower supporting one end of the Dansk Marconi Tee was loaded up just above its base and used for 2 MC/s SSB. “This worked very well,” says Paul.

The 6-channel JRC transmitter used a conical monopole antenna with a frequency range of about 3-30 MC/s.

The Harris transmitter had its own conical monopole antenna.

Looking up one of the transmission towers at Auckland Radio, 29 August 1946.

Looking up one of the transmission towers at Auckland Radio, 29 August 1946. Photo: Whites Aviation