23cms ATV

The 23cms band is the most commonly used band for ATV.

Frequency allocations

The UK allocation is from 1240 MHz to 1325 MHz and common ATV usage is as follows:

• 1248 – 1249 MHz = repeater inputs

• 1255 MHz = simplex

• 1275 MHz = simplex or alternative repeater input as determined by the CAA (primary user).

• 1300 – 1325 MHz = repeater outputs

For details of current 23cms ATV repeaters see https://www.ukrepeater.net/tvr.htm?filter1=23cm

For 23cms UK bandplan see https://rsgb.org/main/operating/band-plans/

For other 23cms information see the UK Microwave Group wiki page.

23cms equipment

23cms FM ATV equipment

The most commonly used FM ATV was made by Comtech – see this page for more details: https://wiki.batc.org.uk/Comtech_module

During the 1980’s, Wood & Douglas produced a range of 1.3GHz FM TV equipment that gave many amateurs their first taste of microwave ATV operation. See this page for more details: https://wiki.batc.org.uk/Wood_%26_Douglas_FM_TV_equipment

The Solent range of ATV equipment was sold by the Worthing repeater group in the 1990s. See https://wiki.batc.org.uk/Solent_ATV_units

Hans Beukinga makes and sells 23cm and 13cm FM ATV gear.

Wayne at Mini-kits in Australia sells a range of FM ATV kits

Ken G4BVK ran Aztex Electronics. Dave G7MEG discovered a tranmitter, amp and pre-amp in his cupboard in this forum post.

23cms DATV equipmemt

The BATC Portsdown project covers 23cms – see https://wiki.batc.org.uk/Portsdown_Transmitter_User_guide

23cms Power amplifiers

For 23cms Power amplifier designs see https://wiki.batc.org.uk/23cms_amplifiers

23cms Filter designs

For details on filters for 23cms see https://wiki.batc.org.uk/23cms_filters

23cms antennaes

For details on antennaes for 23cms see https://wiki.batc.org.uk/23cms_antennaes