2013 onwards CQ-TV 241 to CQ TV 260

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Issue 256 Summer 2017
Article 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
Article 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
Article 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
Issue 253 Autumn 2016
Article 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
Issue 252 Summer 2016
Article 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
Issue 251 Spring 2016
Article 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
Issue 250 Winter 2015
Article 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
Issue 249 Autumn 2015
Article 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
Issue 248 Summer 2015
Article 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
Issue 247 Spring 2015
Article 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
Issue 246 December 2014
Article 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
Issue 245 September 2014
Article 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
Issue 244 June 2014
Article 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
Issue 243 March 2014
Article 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
Issue 242 December 2013
Article 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
Issue 241 September 2013
Article 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 24
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