Copies of CQ-TV more than 2 years old are free to download at https://batc.org.uk/cq-tv/cq-tv-archive/
Issue 267 Spring 2020
Article
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Page
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One Year of Operation for the Goonhilly WebSDRs for QO-100
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8
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Neat Housing for the Portsdown 7-Inch Screen with Pi Camera
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9
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ATV repeater PI6ATS
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10
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Electronic push button on-off switch for the Portsdown
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12
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DATV Activity in North Northamptonshire
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13
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CQ-TV, the BATC and you, our members
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14
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A new controller for VK2RTS
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15
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Don Saunders, G0WFT - silent key
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18
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DATV repeater receiver with active video switch
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19
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BBC MCR21’s Sound Mixer Desk and audio systems
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21
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Remote Repeater and Station Monitoring with Modbus (Part 1)
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23
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Video production with a smartphone part two
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27
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Revived Terrestrial Activity
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28
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Portsdown Newsletter
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29
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A 10 Watt Linear Amplifier for 70cms DATV or narrowband modes
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30
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A compact 12 volt Beam Antenna rotator
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31
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Turning Back the Pages - CQ-TV 78
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32
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Issue 266 Winter 2019
Article
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Page
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A New Repeater Transmission Standard for the 2020s
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9
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BATC report to the RSGB Spectrum Forum
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12
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ADALM-PLUTO DATV TX – “How To”
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14
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A 30 watt driver amplifier for 2.4 GHz
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19
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Out portable for the BATC November Activity weekend
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21
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5.6 GHz TV Receiver
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22
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Using the Jetson Nano with the LongMynd software
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25
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GB3ET Repeater
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27
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Video Fundamentals 20 - Outside Broadcast Vans
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28
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Portsdown Newsletter
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30
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25 MHz reference, biasT and diplexer for QO-100
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31
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The Secret Life of a TV Repeater
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33
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Jamboree on the Air and QO-100
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35
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CAT 19 South - a short report
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36
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Turning Back the Pages
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37
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DATV at the SDR Makerspace Conference
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39
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Issue 265 Autumn 2019
Article
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Page
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The BATC bursary scheme
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7
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IARU Region 1 ATV Contest 2019 Results
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8
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OBS and the Portsdown
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10
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Using Mitsubishi MOSFET power modules with PE1RKI kits
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13
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Telling the Story of MCR21
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16
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Video Fundamentals 19
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18
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The Jetson NanoBox
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20
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LNB power supply with current limit for MiniTiouner
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22
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A 250 Watt amplifier for Es’Hail-2 DATV
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23
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Portsdown Newsletter
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26
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The RSGB filming a new promotional video
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27
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The LimeNET Micro – a Single-board DATV Transmitter
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28
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Spectrum Matters
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29
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The LongMynd Receiver on the Portsdown
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30
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The LongMynd Receiver
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32
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The G4WIM PA controller
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34
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Turning Back the Pages - a 70 year special!
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39
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ATV at Chalon-sur-Saone fayre
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43
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Issue 264 Summer 2019
Article
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Page
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BATC stand, Blackpool 2018 & 2019
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8
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BATC Members’ Shop Update
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9
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MCR21 Project Launch
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12
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23 cm QRM
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13
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Protecting Your LimeSDR Mini
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14
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Portsdown Made Simple
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15
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How to use K7FRY’s 10 Character Locator Website
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16
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Dual channel output for the BATC version 2 MiniTiouner PCB
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17
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KITTENS 19 & KITTENS 19 Activity Day
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19
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Goonhilly Spectrum Monitor and WebSDR Maintenance Visit
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21
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Video Fundamentals 18
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22
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BATC at the Kempton Park Rally
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23
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A very cheap easy to make Sync detector for
analogue video
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24
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Well, I tried… 5.8GHz ATV
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25
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Video Production - with a smartphone! Part 1.
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26
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Turning Back the Pages - CQ-TV 76
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28
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MCR21 Recording its History
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31
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BATC at the Newbury Rally 2019
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31
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Issue 263 Spring 2019
Article
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Page
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OSCAR- 100 has arrived!
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9
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Receiving QO-100
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10
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Transmitting Systems for QO-100 on Es’hail-2
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12
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G8LES Spectrian Amplifier mods for 2.3-2.4GHz
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15
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Portsdown Newsletter
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17
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Bias and reference injection board
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19
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Easy Hole Plating at Home
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21
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New DATV record on 76 GHz
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24
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Bristol Mini-CAT
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24
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MCR21 Progress
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25
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The old and new models of the Octagon Twin LNB
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26
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Route du Rhum
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26
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Cheap Ebay Bias Tee
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27
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Experiments with baseband digital video
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28
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A New Audio Mixer for GB3KM
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32
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BATC Website Incident
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33
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Video Fundamentals 17
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34
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3D Printed horn antennas - Part 2
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35
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Simple dual band dish feed for Es’hail-2 (POTY)
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37
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Turning Back the Pages - CQ-TV 75
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41
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Issue 262 Winter 2018
Article
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Page
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BATC report to the RSGB Spectrum Forum
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11
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BATC response to WRC Agenda Item 1.1
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12
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The story behind Es’hail-2
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13
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Portsdown Support for the LimeSDR
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15
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Sydney Amateur Television goes 5.6 GHz
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18
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We were there at the launch of Es’Hail-2!
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20
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A 23cm Power Amplifier For Digital ATV
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22
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Portsdown Newsletter
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25
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I bought a 3-D printer
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27
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DVB-S DATV signal power measurement
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29
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Low band DATV
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30
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DATV on 24cms
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31
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Measuring Power on 5.6 GHz & a New Receiver
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33
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Baliu RB-TV in Catalonia
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35
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DATV over optical - Part 2: interfacing the two
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36
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Video Fundamentals 16 - Aspect Ratio re-visited
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40
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Turning Back the Pages - CQ-TV 74
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41
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Issue 261 Autumn 2018
Article
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Page
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Touchscreen control of the DATV Express – part 2
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9
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CAT18 award presentations and prizes
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10
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BATC Test Equipment
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11
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Microwave roundtable construction competition winners
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11
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A Handy Signal Generator for 10GHz
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12
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Es’Hail-2 launching soon!
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14
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The Future of CAT
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15
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ATV Workshop in Shropshire
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16
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Portsdown Newsletter
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17
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DATV over optical – an introduction
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19
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CAT18 Report
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21
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BATC at Goonhilly
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25
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Video Fundamentals 15 - Wire, labelling & MCR21
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26
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Es’hail-2 Wideband Transponder
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28
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BATC members and DATV in Spain
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29
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Getting ready to receive Es’hail-2
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30
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BATC Awards Presentations at CAT18
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33
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Never mind the width - look at the quality
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34
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David Ellis Jones B.Sc, ALCM. GW8PBX (SK)
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35
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Locking the Octagon PLL LNB to an external reference
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36
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Turning Back the Pages - CQ-TV 73
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37
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