Difference between revisions of "Technical topics for ATV repeater builders"

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=== Antennas ===
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==== Antennas ====
  
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Repeater aerials are difficult as they need to be horizontal omni!
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===70cms===
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https://do7psl.de/portfolio-item/big-wheel-vhf-and-uhf/
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https://vk6ysf.com/435mhz_5_petal_cloverleaf_antenna.htm
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G8GTZ built the VHF comms Big wheel or clover leaf design made out of 8mm copper brake pipe for GB3HV
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[[File:VHF Comms 2-94 article.jpg|400px]]
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[[File:VHF Comms 2-94.jpg|400px]]
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[[File:008.JPG|400px]]
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[[File:012.JPG|400px]]
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[[File:IMG_0686.JPG|400px]]
  
 
=== Filters ===
 
=== Filters ===
 
[http://www.id-elektronik.de/en/produkte/filter/index.htm ID Elektronik GMBH] make some amazing filters and duplexers for 23cms and above - you can't build them for the price.
 
[http://www.id-elektronik.de/en/produkte/filter/index.htm ID Elektronik GMBH] make some amazing filters and duplexers for 23cms and above - you can't build them for the price.

Revision as of 07:49, 6 July 2018

This is a collection of articles designed specifically with the ATV repeater builder in mind.

Receivers

File:SL30 lock detect.pdf - How to obtain a lock indication from the Comag SL30 receiver.

Transmitters

Logic

Antennas

Repeater aerials are difficult as they need to be horizontal omni!

70cms

https://do7psl.de/portfolio-item/big-wheel-vhf-and-uhf/

https://vk6ysf.com/435mhz_5_petal_cloverleaf_antenna.htm

G8GTZ built the VHF comms Big wheel or clover leaf design made out of 8mm copper brake pipe for GB3HV

VHF Comms 2-94 article.jpg

VHF Comms 2-94.jpg

008.JPG

012.JPG

IMG 0686.JPG

Filters

ID Elektronik GMBH make some amazing filters and duplexers for 23cms and above - you can't build them for the price.