President VK6IQ Glen 08-9444-3690
Packet VK6IQ@VK6ZSE
Email VK6HK
Annual Membership Subscription $12

This group have a weekly Net on Mondays at 8pm on the 146.750 MHz repeater,
moving to 145.500 MHz simplex before 8.30pm.

This group was formed to provide a forum for radio amateurs interested in ATV,
it is a small group but welcomes an increase in numbers,
there is a good pool of knowledge amongst the members.

If you are already interested in ATV, or whether you would like to find out about ATV,
you are welcome to attend the meetings, Currently in suspension.

The group owns, and operates an ATV repeater, VK6ATV, which was on test at Greenmount.
Do you know of a good site ?

The input frequencies are 426.25 MHz AM Vision carrier, and 431.75 MHz Sound carrier,
using the normal PAL modulation standard. 145.5 MHz is used for liason,
and activity on this frequency is usualy an indication of ATV activity.

The outputs of the repeater are 444.25 MHz vision, and 449.75 MHz sound.

Most modern receivers will tune down to the repeater frequencies, which is
at the botton of the UHF band. A good horizontally polarised beam is essential,
preferably cut for the UHF amateur band.

As most television receivers are designed to work in an area covered by
transmitters rated at 100's of kilowatts, you will find they are quite deaf when trying to receive
signals from a 15 watt repeater, and although an increase in power to 100 watts is planned,
you will still need a hearing aid on your television receiver, so a good pre-amplifier is essential.

The bandwidth of a television channel is 7 MHz so a 100 watt signal
has nowhere near the same coverage as a 100 watt sound transmitter.

Written by Brian VK6TTV  - Brian is now M1DMR (G3)

WIA WA - AR Guide - WA - Special Interest Group - ATV

AR Guide index    - WA index