CQ-DATV 88 available for free download

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CQ-DATV 88 available for free download

Post by g8cjs » Wed Sep 30, 2020 9:06 am

CQ-DATV 88 is now available for free download from https://www.cq-datv.mobi/88.php in this issue:-

Don N0YE provides details on how he designed and built his home-brew digital TV transverter for the 5cm band.
Ryde Software there is now a minor revision that introduces a hardware shutdown facility.
Trevor has produced another edition of the GVG panel and how to implement the T-bar which is part of GVG 16 software and also the start of how to add control of a remote Pan and Tilt head by extending out the I2C bus to a PCA 9685 module.
We have reported previously of the use of 2watt power amplifiers from China for the 5.8GHz band for FM ATV and DVB-T. There have been problems with at least one or more of these amplifiers burning out. Now Jim, KH6HTV, Pete, WB2DVS, Bill, AB0MY & Don, N0YE have jointly carried our autopsies.
Dave Pelaez, AH2AR looks at ways to provide portability for DVB-T receive capability.
Steve Marshall M0SKM has taken the brave step of scraping his power hungry Spectrian 23cms power amplifier and re-using the XRF 286S transistors in a new design.
Ken Goldstein, KD5HEH is engineering an ATV transmitter to be carried aboard a high altitude amateur rocket.
Jim, KH6HTV, Larry, K0PYX, Don, N0YE, Pete, WB2DVS & Debbie, WB2DVT are out on the Colorado prairies with their 5.7 GHz, BBQ grill dish antennas and transverters.
Paul Marshall takes us back to the 1950s, to look at an early the video mixer – a vital but often unnoticed piece of production hardware.
One from the Vault looks back at CQ-DATV issue 2 and John G3RFL’s frequency counter for 10GHz.
An action packed edition of CQ-DATV, with we hope, something for everyone - download, sit back and enjoy!
If you have missed a previous issue they are all in the CQ-DATV library https://www.cq-datv.mobi/ebooks.php

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