Difference between revisions of "23cms ATV"
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==Frequency allocations== | ==Frequency allocations== | ||
| − | The UK allocation is from | + | The UK allocation is from 1240 MHz to 1325 MHz and common ATV usage is as follows: |
| − | *1248 - 1249 MHz = repeater | + | *1248 - 1249 MHz = repeater inputs |
| − | *1255 | + | *1255 MHz = simplex |
*1275 MHz = simplex or alternative repeater input as determined by the CAA (primary user). | *1275 MHz = simplex or alternative repeater input as determined by the CAA (primary user). | ||
| − | *1300 - 1325 = repeater outputs | + | *1300 - 1325 MHz = repeater outputs |
For details of current 23cms ATV repeaters see https://www.ukrepeater.net/tvr.htm?filter1=23cm | For details of current 23cms ATV repeaters see https://www.ukrepeater.net/tvr.htm?filter1=23cm | ||
| − | For 23cms UK bandplan see https:// | + | For 23cms UK bandplan see https://rsgb.org/main/operating/band-plans/ |
| − | For other 23cms information see the | + | For other 23cms information see the [https://wiki.microwavers.org.uk/1.3_GHz UK Microwave Group wiki page]. |
==23cms equipment== | ==23cms equipment== | ||
Revision as of 17:50, 23 September 2018
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
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