View source for 2013 onwards CQ-TV 241 to CQ TV 260

Copies of CQ-TV more than 2 years old are free to download at https://batc.org.uk/cq-tv/cq-tv-archive/

=====Issue 259 Spring 2018=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|CAT18 and the BATC General Meeting
|8
|- 
|GDPR and the BATC
|12
|-
|The HamTV Merger
|13
|-
|3D Printed horn antennas
|16
|-
|3404MHz Band Pass Filter
|19
|-
|Narrow-bandwidth Television Association
|20
|- 
|Video Fundamentals 13 - test signals
|21
|-
|Running 28v Latched Relays from a 12v Rail
|23
|-
|Customising the adf4351 pic code for your frequency
|27
|-
|My Station - M0DTS
|28
|-
|Minitioune V0.8
|30
|-
|Producing a PIC for the 7 – band local oscillator
|33
|-
|Adding a display to the MiniTiouner-V2
|37
|-
|Updates from Germany from TV-AMATEUR 187
|38
|-
|Portsdown 2018
|41
|-
|Member’s Projects - F6GXI
|43
|-
|Touchscreen control of the DATV-Express
|44
|-
|Turning Back the Pages - CQ-TV 71
|45
|}

-----------------------------------------------------------

You can download a copy of the following magazines, which are more than 2 years old, at https://batc.org.uk/cq-tv/cq-tv-archive/ or by clicking on the issue header on this page.

=====Issue 258 Winter 2017=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|5.6Ghz ATV from Cumbria
|11
|- 
|9cm LNB Mounting
|14
|-
|GB3FB - A 9cm Digital ATV Repeater
|15
|-
|G3SMU silent key
|21
|-
|BATC report to the RSGB Spectrum Forum
|22
|-
|Kempton Park Rally - 5th November 2017
|23
|- 
|A LED power output indicator
|24
|-
|GB3TZ 5.6GHz input
|25
|-
|5.6 GHz WB ATV Tx
|26
|-
|Portsdown Update
|27
|-
|Portsdown Signal Generator
|29
|-
|Using old laptop screens for ATV
|32
|-
|Miniaturised Pulsed Relay Driver for 28V Microwave Relays
|33
|-
|Converting an old Satellite dish to a 23cm dish antenna
|34
|-
|Arthur C. Clarke
|35
|-
|Using the Tarot 5.6GHz ATV Modules
|36
|-
|Turning Back the Pages - CQ-TV 70
|37
|}

=====Issue 257 Autumn 2017=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|Treasurers Report for 2016
|9
|- 
|DigiTwist
|10
|-
|The ADALM-PLUTO low cost SDR
|14
|-
|Silent Keys - G8AJN & G3KTU
|16
|-
|Video Fundamentals 12
|17
|-
|Using a MinimOSD board for On Screen Callsign Display
|19
|- 
|Antenna range tests at Finningley for the BATC
|21
|-
|The Portsdown Digital ATV Transmitter A Beginner’s Guide
|22
|-
|The Portsdown Transmitter – Security Aspects
|26
|-
|Notes on Amplifiers & Filters
|27
|-
|A Vintage Pye Camera
|29
|-
|5.6 GHz progress
|30
|-
|CAT17 report
|31
|-
|Repeater Update - October 2017
|33
|-
|The Bang-good 23cm aerial
|34
|-
|The Portsdown Transmitter in pictures
|35
|-
| A Coupler probe for use with the Rigol DSA 815-TG
Spectrum Analyser
|36
|-
|Turning Back the Pages - CQ-TV 69
|37
|}

=====Issue 256 Summer 2017=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|Portsdown Transmitter Construction Competition
|10
|- 
|Power Amplifier for DATV
|11
|-
|DATV Moonbounce from Goonhilly
|12
|-
|The Portsdown Transmitter Software
|15
|-
|8 GHz eBay Power Meter
|17
|-
|CAT 17 – September 9th and 10th 2017
|18
|- 
|eBay Ampliiers
|19
|-
|MiniTioune Mark 2 DVB-S digital receiver
|20
|-
|Video Fundamentals 11: Studio systems – the Matrix
|23
|-
|My Station: Malcolm Johnson, G0UHY
|25
|-
|A cheap and easy 6cm ATV transceiver
|26
|-
|Ham Radio: DATV-Forum – the latest trends
|28
|-
|Known Digital ATV DX Records
|29
|-
|BATC website development
|30
|-
|Wideband LNBs
|31
|-
|Turning Back the Pages - CQ-TV 68
|32
|}

=====Issue 255 Spring 2017=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|AMSAT North America
Phase 4 Ground Segment Project
|10
|- 
|Packaging Digithin
|11
|-
|The Portsdown Project - Overview
|12
|-
|The Portsdown so far…
A users experience of the build
|14
|-
|Portsdown Filter-Modulator Board -
Construction and Testing
|16
|-
|Portsdown Filter-Modulator Board Modifications
|18
|- 
|ATV on TV - The day TX Factor came to visit
|20
|-
|G8LES Link Video recorder integration
|22
|-
|Could you help with the Scouts’ JOTA 2017?
|25
|-
|GB3ZZ Experimental Inputs
|26
|-
|BATC website development
|29
|-
|Relocation of the John Lawrence Valve Collection
|30
|-
|Es’hail-2 Ground Segment Planning Meeting
|31
|-
|Video Fundamentals 10: The Mixer
|32
|-
|A high performance ATV upconverter
|34
|-
|Turning Back the Pages - CQ-TV 67
|37
|}

=====Issue 254 Winter 2016=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|The BATC Portsdown DATV project
|11
|- 
|The Portsdown Raspberry Pi-based DATV
Transmitter - Introduction
|14
|-
|Constructing the Portsdown Raspberry
Pi-based DATV Transmitter
|16
|-
|Software for the Portsdown Raspberry
Pi-based DATV Transmitter
|18
|-
|HamTV Update
|21
|-
|My Station - Tony Hornby, G1HBD
|22
|- 
|BATC report to the RSGB Spectrum Forum
|24
|-
|Video Fundamentals 9 - Genlock and
Reference Signals
|26
|-
|Gilwell 24 - 2016
|28
|-
|Turning Back the Pages - CQ-TV 66
|29
|}

=====[https://batc.org.uk/wp-content/uploads/cq-tv253v2.pdf Issue 253 Autumn 2016]=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|The ADF4351 flexible signal source
|9
|- 
|7-band local oscillator
|9
|-
|ADF4351 driven by an Arduino
|13
|-
|GB3HV 70cms input update
|15
|-
|A 437 MHz DVB-S Transmitter
Using a Raspberry Pi
|16
|-
|The Making of ‘TXFactor’
|20
|- 
|CAT16 - the full story
|23
|-
|VMix to RpiDATV via FFmpeg
|26
|-
|Noise Power meter for the Minitiouner
|27
|-
|Video Fundamentals 8
|28
|-
|DN1JKG calling OR4ISS
|30
|-
|DATV-Express on Windows
|32
|-
|Here and There...
|34
|-
|New and renewing members
|35
|-
|Turning Back the Pages - CQ-TV 65
|36
|-
|High Tech Wearables
|38
|}

=====[https://batc.org.uk/wp-content/uploads/cq-tv252v2.pdf Issue 252 Summer 2016]=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|Biennial General Meeting – Postal Votes
|6
|- 
|CAT 16 Details
|11
|-
|Treasurers Report for 2015
|12
|-
|Dual Filter Board for DigiLite 5.9
|14
|-
|New super tuner design for dvb-s and s2
|17
|-
|HAMPADS: HAM-Portable Affordable Dish
for Satellites
|18
|- 
|Summer ATV Contest Images
|23
|-
|Video Fundamentals 7 - Camera Signal Processing
|24
|-
|The Matilda Story
|26
|-
|My Station - Peter Yarde, G8DKC
|35
|}

=====[https://batc.org.uk/wp-content/uploads/cq-tv251v2.pdf Issue 251 Spring 2016]=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|CAT 16 and BATC AGM
| 9
|- 
|Peter Blakeborough, G3PYB - Silent Key
|10
|-
|A BATC Wiki
|12
|-
|The Principia Mission - Give us a wave Tim!
|14
|-
|Social Media
|18
|-
|Simple Antenna Tracker for the ISS
|20
|- 
|Animated Test Cards
|22
|-
|My Station - G8VPG **New Feature**
|24
|-
|Activity at GB3ET
|25
|-
|Video Fundamentals 6
|26
|-
|DATV-Express power amplifiers
|28
|-
|Reduced Bandwidth TV Modulator
|32
|-
|New Application for DATV-Express
|34
|- 
|More Modifications to the SUP-2400
|35
|-
|leandvb: A lightweight software DVB-S demodulator
|36
|- 
|Open Broadcaster Software with DATV-Express
|40
|-
|SUP-2400 DiSEqC update
|45
|- 
|Getting started in ATV - DATV reception
|46
|}

=====[https://batc.org.uk/wp-content/uploads/cq-tv250-1.pdf Issue 250 Winter 2015]=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|Latest developments at GB3GV
|6 
|- 
|BATC report to RSGB Spectrum Forum
|8
|-
|Alan Daw, G1APD - sk
|9
|-
|ARISS and HamTV - Supporting the Principia Mission
|10
|-
|Goonhilly Earth Station
|12
|-
|Variable SR filter for RB-TV 
|14 
|- 
|The HamTV antennas on the ISS
|16
|-
|Using the SUP-2400 for 146.5 MHz Reception
|17
|-
|An outing for the LDK5 camera
|19
|-
|Amateur Television “Getting Started”
|20
|-
|Getting Started with RB-TV
|25 
|- 
|A bandpass filter for 146.5 MHz
|28
|-
|DiSEqC control for the SUP2400
|29
|-
|Video Fundamentals - Part5
|31
|-
|Simple System to Receive ARISS HamTV
|33
|-
|Using FFmpeg to generate a transport stream 
|34 
|- 
|DATV transmission in the UK – a short history
|40
|-
|Using the Linx 1010b tablet for portable DATV
|44
|-
|GB3HV Christmas Dinner
|46
|}

=====[https://batc.org.uk/wp-content/uploads/cq-tv249-1.pdf Issue 249 Autumn 2015]=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|Outside Broadcast with the BATC
|9
|- 
|146MHz RD70HVF1 Amp
|11
|-
|24GHz building blocks
|12
|-
|2 watt driver amplifiers for 1296 and 2304MHz
|15
|-
|HD TV news from Germany
|19
|-
|Slow Scan TV with a Raspberry Pi
|23
|- 
|vMix using FFmpeg to create the Transport Stream
|27
|-
|Michael Hastings, G8ASI sk
|32
|-
|CAT 15 - A weekend of technical presentations
|33
|-
|Video Fundamentals - Part4: The Camera’s Eye
|35
|}

=====[https://batc.org.uk/wp-content/uploads/cq-tv248-1.pdf Issue 248 Summer 2015]=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|RB-TV Roundup
|10 
|- 
|The Low SR World Conquest
|11
|-
|DATV Developments in North Wales
|16
|-
|Minitiouner - USB Tuner Module
|20
|-
|Narrow band DATV on the BATC DTX1
|25
|-
|Product Review - PE1RKI 23cm four pole filter
|27 
|- 
|vMix using FFmpeg to create the Transport Stream
|27
|-
|Video Fundamentals - Part 3: Picture Monitor
|29
|-
|Video Sync generator
|31
|-
|A Field Day station with PC6REC
|36
|}

=====[https://batc.org.uk/wp-content/uploads/cq-tv247-1.pdf Issue 247 Spring 2015]=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|New 70MHz band for RB-DATV
|9
|- 
|A Two way on 146.5MHz RB-DATV
|10
|-
|146MHz RD06+RD15 Amp
|12
|-
|New Life for Old Rotators
|13
|-
|A Guide to setting up the DATV Express for 
RB-DATV Operation on 146.5MHz
|15
|-
|Portsmouth RB-TV Meeting
|17
|- 
|DigiThin - A Narrowband QPSK Modulator for the Raspberry Pi
|19
|-
|DigiThin Beta Testing
|22
|-
|Add-On Transport Stream Dock for BATC DTX1
|23
|-
|RPiDATV software improvements
|25
|-
|GB3KM - the first year of operating on 3.4GHz
|26
|-
|ATV image generator using the Raspberry Pi
|28
|-
|Local oscillators in 1.2GHz band, for Digilite DATV System
|29
|- 
|RB-TV receiver developments
|31
|-
|Comparing DATV models
|32
|-
|Video Fundamentals 2 - Colour Bars
|34
|-
|Classic circuits - PicDream
|36
|}

=====[https://batc.org.uk/wp-content/uploads/cq-tv246-1.pdf Issue 246 December 2014]=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|BATC report to the RSGB Spectrum Forum Oct 14
|11 
|- 
|Reduced Bandwidth DATV (RB-TV)
|13
|-
|RB-TV Awards Programme
|17
|-
|Antennair DTX-F70 and the Antennair DTX-F23
|18
|-
|Understanding DATV RF Bandwidth for DVB-S
|20
|-
|IARU Region 1 General Conference Report
|23
|- 
|Video Fundamentals 1 – The Line Sync Pulse
|25
|-
|BATC Streaming Service
|26
|-
|RPiDATV RB-TV transmit system
|28
|-
|BATC New subscription rates
|33
|-
|MAX On-Screen-Display Generator
|34
|-
|Classic circuits – General Purpose Amplifier
|36
|-
|Digital-ATV - Using ODROID with the DATV-Express board
|37 
|- 
|GoPro Hero 4
|42
|}

=====[https://batc.org.uk/wp-content/uploads/cq-tv245-1.pdf Issue 245 September 2014]=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|CAT14 - in words and pictures
|8 
|- 
|DVB-S on the Solent - Part 1
|10
|-
|The Marconi at CAT14
|11
|-
|Effect of Phase Noise on a DVB-S Signal
|14
|-
|DVB-S on the Solent - Part 2
|15
|-
|Weak Signal Performance of DVB-S Receivers
|17
|- 
|Geostationary ATV could be on its way!
|19
|-
|Museo de la Imagen - Santiago de Cuba, Cuba
|20
|-
|Annual Worldwide ATV QSO Party
|23
|-
|DVB-T with a Hides HV110
|30
|-
|IARU Region 1 Conference
|31
|-
|A Filter for 437MHz
|32
|-
|Classic Circuits - a Look Through Filter for 23cms
|34
|- 
|ATV streaming using a Mac
|35
|}

=====[https://batc.org.uk/wp-content/uploads/cq-tv244-1.pdf Issue 244 June 2014]=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|The Constitution of the BATC
|9
|- 
|Video Processing Circuit
|12
|-
|There’s something different on Fast Scan TV
|16
|-
|Using a small ARM based mini TV box for digital TV
|20
|-
|Online ATV streams and HAMNET
|22
|-
|Streaming Student Robotics 2014
|23
|- 
|Treasurer’s Report for 2013
|24
|-
|VK DATV QSO Party
|26
|-
|New Rigol Spectrum Analyser discoveries
|28
|-
|DVB-T-Receiver HV-110
|34
|-
|4K – what is it?
|35
|-
|Classic Circuits - A Tuneable 70cm Narrowband Filter
|39
|}

=====[https://batc.org.uk/wp-content/uploads/cq-tv243.pdf Issue 243 March 2014]=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|ISS HamTV Received
|9
|- 
|BATC CAT14 and the General Meeting
|10
|-
|New Repeaters on the Air
|12
|-
|BATC and you, the Member
|14
|-
|DATV-Express Project
|15
|-
|HamTV from the ISS
|16
|- 
|VK6MJ - ISS Tracker
|18
|-
|Using the Raspberry Pi to Control an Ultram VCO
|19
|-
|The BATC Forum
|20
|-
|70cm Yagi
|22
|-
|Versatile Audio AGC Circuit
|23
|-
|Digital ATV – Using a Spectrum Analyzer
|29
|-
|Early Colour Cameras and their problems- Part 2
|34
|- 
|Classic Circuits - Remote control using DTMF
|35
|-
|Turning Back the Pages - CQ-TV 56
|37
|- 
|Late news - New Geostationary satellite; More
frequency at VHF; the latest ISS news
|39
|}

=====[https://batc.org.uk/wp-content/uploads/CQTV242-1.pdf Issue 242 December 2013]=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|DX Records
|8 
|- 
|Repeater News - GB3GV
|9
|-
|CAT13 - the Finningley report
|11
|-
|A 2.5 Watt LDMOS Driver for the 1.3GHz band
|15
|-
|A Beginner’s Guide to Field Programmable
Gate Arrays (FPGAs) Part 2
|18
|-
|10 GHz Synthesised ATV FM TX
|21
|- 
|Early Colour Cameras and their problems- Part 1
|21
|-
|Stand Alone DigiLite with an MK808
|24
|-
|Classic Circuits - Black Level Clamps
|27
|-
|A Tutorial on Displays
|29
|-
|HamTV Bulletin 3
|34
|-
|Digital Integrated Receiver Decoder (IRD)
for use on repeaters
|37
|-
|Low Cost DVB-S Receivers Suitable
For HAMTV Reception
|40
|}

=====[https://batc.org.uk/wp-content/uploads/cq-tv241-small.pdf Issue 241 September 2013]=====
{| class="wikitable" ;" 
! style="width:400px; text-align:left;"|Article 
! style="text-align:left;"|Page
|-
|BBC BH and Paul Marshall
|6
|- 
|Don Reid
|7
|-
|An Introduction to the DTX1 Transmitter
|10
|-
|DTX1 1st User Review
|11
|-
|PGA103+ Broad Band Amplifier
|12
|-
|CAT13 – the BATC 2013 Convention details
|15
|- 
|BATC Presentation for DXSpot.TV
|16
|-
|DXSpot.TV details and information
|17
|-
|BATC Treasurers Report for 2012
|18
|-
|50 years of home video recording
|20
|-
|BATC Training – the Digital Studio part 2
|20
|-
|FPGA programming for beginners. Part 1
|21
|-
|Setting up a Virtual Studio
|30
|-
|History of Television – Monoscope Cameras
|36 
|- 
|GB3IV Repeater
|38
|-
|A new approach to Digital ATV repeaters in New Zealand
|40 
|- 
|DATV from the International Space Station – full specification
|44
|}