70 centimetres

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Other VHF/UHF/Microwave wiki pages : 33 centimetres, 13 centimetres, 9 centimetres, 6 centimetres,3 centimetres 1.25 centimetres and Bands above 24GHz.

Band: 70cm
Bands
160m 80m 60m 40m 30m 20m 17m 15m 12m
10m 6m 4m 2m 1.25m 70cm 33cm 23cm 3cm
Band Privileges
US Extra 420-450
US Advanced 420-450
US General 420-450
US Technician 420-450
UK (all) 430-440

The 70 centimetre band is a popular UHF band.

Equipment

Single-band equipment for 70cm is rare, but many dual-band transceivers are available that operate on both 2 metres and 70cm. Available gear includes both mobile units and HTs.

Modulation

The most common mode is FM, but weak-signal operation using CW and SSB occurs at the lower end of the band. This is also the most popular band for Fast-Scan Television.

Propagation

Propagation at UHF is primarily line-of-sight. However, tropospheric ducting can occasionally support contacts over ranges of as much as 1500 to 3000 kilometres. Aurora and meteor scatter propagation have been observed, but are relatively rare and difficult to use.

Australian 70cm bandplan

Access : All licence classes

420 - 450 MHz RADIOLOCATION Primary Service

420 - 450 MHz FIXED, MOBILE Primary Service

420 - 430 MHz AMATEUR (restricted access in some states) Secondary Service

430 - 450 MHz AMATEUR Secondary Service

435 - 438 MHz AMATEUR SATELLITE Permitted on non-interference basis


VK4YEH Vk 70cm bandplan.jpg


Bands
HF and MF 160 metres * 80 metres* 60 metres * 40 metres * 30 metres * 20 metres * 17 metres * 15 metres * 12 metres * 10 metres
VHF 6 metres * 4 metres * 2 metres * 1.25 metres
UHF 70 centimetres * 33 centimetres * 23 centimetres * 13 centimetres
Microwave 9 centimetres * 6 centimetres * 3 centimetres * 1.25 centimetres * Bands above 24GHz
See also US bandplan