CQ-DATV 84 is now available as a free download

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g8cjs
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CQ-DATV 84 is now available as a free download

Post by g8cjs » Sat May 30, 2020 5:09 pm

CQ-DATV 84 is now available as a free download, https://www.cq-datv.mobi/84.php
In this issue :-
Back in February 2013, we serialised the construction of an ATV repeater for the 10GHz band (GB3FY), sadly due to an arson attack!!! This repeater is now of the air..
Another repeater story this time from our resident guru Jim Andrews, KH6HTV, again an analogue repeater using an FM­TV transmitter at 5.9 GHz.
Jim has also come up with an idea for an ATV repeater that is both analogue and digital, using the same rf linear power amplifier and antenna, but adding a 3dB power combiner to the input of the amplifier and feeding it with two modulators, one analogue and one digital.
If that’s not enough Jim has been investigating replacement crystals for TV transmitters. It seems these components, once the staple diet of all Radio and TV hams, are now becoming hard to source.
Trevor now has his Grass Valley panel controlling the software package Vmix and has made all the software a free download on the CQ-DATV download site (the hardware was in CQ-DATV 68).
John G3RFL has a very professional attenuator in bits on the workbench, John has also been splashing the cash he is saving while the pubs are closed on a Baofeng GT­3TP transceiver, and has sent in a review
One from the Vault looks back on Trevor’s original, fade to black unit that uses two video paths, one for sync and burst and one for video so it can fade just the video and not the sync and burst.
ATV both the video side and the RF side are important to us all, if you would like to help, by submitting either a project, a story, a review, or perhaps some help with proof reading future issues.
Then you can contact the editor editor@CQ-DATV.mobi. …. Please enjoy CQ-DATV 84 and submissions for the next issue CQ-DATV 85 are now open.

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