1983 - 1987 CQ-TV 121 to CQ-TV 140

Issue 121 February 1983

Article	Page
1GHz oscillator	14
24cm notes	41
Character memory	43
Colour caption keyer	8
Colour subcarrier phasing display	36
Composite colour on the BBC micro	7
FM TV	38
Gamma and AGC control	45
Handbook vol.2 notes	41
New ATV books	19
PAL and SECAM	39
TV receiver	32
TV repeaters	17
TV reporting chart	30
TVI (filter)	27
The Grant Dixon award	39
Tribute to Grant Dixon	21

Issue 122 May 1983

Article	Page
70cm code of practice	30
70cm transmitter	20
An FM-TV receiver I.F.	6
Coaxial connectors (BNC)	34
Colour subcarrier distribution amp	16
Computer generated test card	25
El-cheapo telecine	32
The helix on 1.3GHz	39
USA ATV society	43

Issue 123 August 1983

Article	Page
30 years ago - a look back	41
70cm linear amplifier	29
Book review - RSGB VHF/UHF Manual	26
Coaxial connectors (BNC)	21
Field sync detector and delay cct	20
Handbook 2 notes and corrections	42
Lincoln Hamfest	11
NBTV - what is it	12
PAL coder	7
Show roundup (BATC show 1983)	24
Specification for 1240/1325MHz TV repeaters	34
TX-9 notes	40
Teletext terminal	16
The things you write	15

Issue 124 November 1983

Article	Page
Baird museum	55
Budget spectrum analyzer	27
Callsign insert	5
Circuit notebook - coax cable	44
Coalville gala	46
Coaxial connectors (PL259)	19
Colour bar generator	52
Handbook 2 notes	49
Monitor conversion	16
Printed circuits explained	22
Quality video from the BBC micro	34
TV alarm	47
TV scanner	53
The ’big sync’ modulator	32
The handbook coder re-visited	54
Video modulator	45
Wire-line for microwaves	8

Issue 125 February 1984

Article	Page
3MHz video filter design	34
BBC test card program	20
Brighten up your image - part 1	6
Circuit notebook - ZNA234 chip	31
Coaxial connectors (’N’ series)	41
DX-ATV?	32
Dividing by ’N’ with CD4040	14
SSTV scan converter	39
TVs for monitors	22
TX/RX timing system	37
The ’Q-studio’ show	16
Universal	19
Video out from a ’RF’ only micro	30

Issue 126 May 1984

Article	Page
Alinco EC-270 scan converter	16
Another FM demodulator for microwaves	48
Biasing the 2C39	27
Book review - Amateur TV Q&A	50
Brighten up your image - part 2	44
Coaxial connectors (’SMA’ series)	24
Colour subcarrier - locked or unlocked?	30
DC conversion for ’Mains’ cameras	17
Ferguson TX-9 TV conversions	30
Home counties ATV meeting	51
Ideas for 1.3GHz	14
Microwave stub tuning	52
More colour bars	21
NBTVA - newsletter resume	41
TV repeaters	8
The MC1377 colour encoder	42
Vertical sync processor	23

Issue 127 August 1984

Article	Page
1.3GHz notes	52
1984 General meeting	41
24cm colinear aerial	15
70 & 24 - what is the difference?	23
BATC 1984 Convention	11
Brighten up your image - part 3	20
Burst locked subcarrier oscillator	48
IRAC region 1 conference report (Sicily)	46
In the Studio - part 1	26
John Logie Baird remembered	37
Mods to G3WCY SSTV scan converter	6
Portable 50Hz power supply	58
Simple sync pulse generator	43
Three gems for 24cm	62
West German ATV convention	55

Issue 128 November 1984

Article	Page
24cm Trade news	55
CQ-TV equipment review	48
Carnival broadcast	56
Character generator keyboard	16
Coaxial connectors (’SMB/SMC/SMD’ series)	31
FM deviation calibrator	25
In the Studio - part 2	35
Mini aerial for 24cm	53
Monitor TV conversion	23
Narrow-band IF filter	13
Software notebook - BBC colour bars, BATC logo	54
Some notes on SSTV	7
Sound sense	58
TV for Harefield	62
Yet another grey scale generator	60

Issue 129 February 1985

Article	Page
24cm Radar suppression	59
ATV repeater - GB3CT	17
An alternative to Genlock	58
BATC at Scottish convention	21
Equipment reviews (24cm)	22
GaAsFET pre-amplifier for 1.3GHz	51
Goodbye 405 lines	64
Moray Firth ATV	41
Project 100 Colour gunlock	18
SSTV Transmit converter	7
Software notebook - BBC big text display	60
Some notes on SSTV - part 2	42
Sync processor	32
The good old days - part 1	56
Trade news	62
Video operated relay	27

Issue 130 May 1985

Article	Page
Cheering up the Pye Lynx	14
Circuit notebook - D to A conversion	13
G4ENA SSTV TX auxiliary board	16
How high is low?	73
Ideas for an FM TV transmitter	50
In the Studio - part 3	26
Interfacing the Spectrum	42
Literature received	48
Passive repeaters	54
Queensland ATV award	67
SSTV in the UK	55
SSTV standards	74
Simple Genlock unit	68
Single chip colour encoder	8
Software notebook - Commodore 64	40
Spectrum BATC logo program	72
Sync separator	38
The EPIC - TV shooting script	37
The good old days - part 2	11

Issue 131 August 1985

Article	Page
1.3GHz power amplifier	16
70cm RF probe	70
AGAF convention	40
Circuit notebook - Sync processor	38
Coax adapter	43
Colour on a ZNA234	32
DB0DP to DB0TT - German repeater group	81
G3WCY SSTV scan converter update	25
GB3VR - the Worthing repeater	28
How to avoid spots before the eyes	57
In the Studio - part 4	63
JVL 1.3GHz Loopquad	55
Monitor Conversion for Thorn TX-90	7
Pre-emphasis for FM-TV	74
Software notebook - BATC logo for BBC-B	46
Synchronising Micros and VTRs	77
The 1985 BATC rally	34
The perils of GB3GV	61
Troughline for 24cm	22
Tuning the ELC1043	44
Variations on a vision switcher	72

Issue 132 November 1985

Article	Page
’ere turn your dev’ down a bit!	33
ATV threatened in the USA	19
An FM-TV generator	10
Camera connectors	58
Cheap aerial for 1.3GHz	48
Computer Graphics mixing system	6
Custom designed FM-TV video strip	52
Go/no-go crystal tester	56
In the Studio - part 5	21
Modifying the Sony HVS2000 video mixer	15
Notes on a video processing amplifier	65
Repeaters and things	60
Software notebook - VTR clock for BBC-B	49
South Australian ATV	57
Stripline filter for 1.3GHz	34
Switch-mode PSU	47
Television 1873 – 1927	18
Tuneable sound demodulator	31

Issue 133 February 1986

Article	Page
24cm FM-TV transmitter	8
70cm coaxial collinear	62
Bruch blanking	56
CQ-TV magazine - how it is produced	34
DRAE slow scan system	28
G9AED remembered	32
In front of the tube - part 1 – optics	64
Modifying the Sony HVS2000 video mixer	40
One in, three out. Buffer amp	26
Phone line video	60
Robot and Wrasse (SSTV)	21
Simple, cheap plating methods for VHF	67
Teletron as a TV typewriter	48
US - ENG on 70cm?	24
US videophiles	46
Where are they now?	54

Issue 134 May 1986

Article	Page
70cm or 24cm PA	14
BATC on Prestel	66
Colour sync pulse generator	52
G4ENA - SSTV extra	50
How wide is wide? (A video filter for 70cm)	20
In front of the tube - part 2	47
In the Studio – feedback	26
New FM-TV modules	11
New PAL coder	60
Pulse distribution amplifier	70
Software notebook - BBC caption generator	38
Square one - part 1 (for novices)	6
Teletron (the continuing story)	68
The "Carascanner" - OB scanner van	56
Video modulating the PYE pocketphone	34

Issue 135 August 1986

Article	Page
24cm jottings	44
Band scan display	60
Colour from a ’no colour’ shack	80
Frequency converter for mathematical PAL	68
Handbook 2 character colouriser notes	42
Horizontal or Vertical? (aerials)	48
In front of the tube - part 3	64
New video switches	76
Radio microphone	47
Report on the BATC 1986 show	28
SSTV - Some notes and observations	26
Skycam	83
Software notebook - video testing on BBC	40
Square one - part 2	50
TVRO receiver	8
The PNP/NPN as an output pair	34
The YAESU FRG9600 for television	56
Why FM-TV for microwaves	53

Issue 136 November 1986

Article	Page
10GHz transceiver	8
70cm VSB filter	42
ATV repeater news	32
Building your satellite TV receiver	52
In front of the tube - part 4	46
Kits, chips, and things	66
Modifying the ROBOT-400	14
New TVRO dish	60
Processing amplifier	74
SSTV - Wrasse pictures on the ROBOT 1200	69
SSTV on the ORIC	80
Satellite TV news	18
Sony camera remote control	64
Square one - part 3	77
TV cookery - tuning a magnetron	62
Tuneable sound demodulator for Sat. TV	50
Universal sync re-processor	24
Video enhancer	7
W&D 1240TVT on test	81
Wideband opto-coupler	21

Issue 137 February 1987

Article	Page
10GHz transceiver	42
CQ-TV award (description)	63
Camtech 1.3GHz pre-amplifier	24
Circuit notebook - Black & burst generator	68
Cursor for SSTV keyboards	76
In front of the tube - part 5	78
International organisation for ATV, EATWG	12
SSTV - new standards for old monitors	71
SSTV on the BBC computer - part 1	51
Satellite TV news	40
Scanning & Syncs explained - part 1	7
Software notebook - BATC logo on TRS80	74
Solent kits are back (24cms ATV)	66
Spectrum computer RAM checker	82
Teletron - Spectrum computer link	57
Teletron extra (EPROM programmer prog.)	61
The G-11 TV chassis on 70cm	16
Tuning the G3YQC 24cm down converter	28
Video enhancers, do they always enhance?	64
Where on 10GHz. (band plan)	47

Issue 138 May 1987

Article	Page
15W solid state power amp for 24cm	12
24cm - What gear?	66
50Hz frequency standard	25
An alternative colour encoder	75
Digital frame store	36
Experimenters corner, FM TV demodulator	79
Genlocking the ’Handbook 2’ colour coder	72
In front of the tube - part 6	56
Mechanical camera for SSTV & NBTV	54
Our repeater. GB3VR	50
SSTV on the BBC computer - part 2	60
Scanning & Syncs explained - part 2	38
Software notebook - Aerial design (Spectrum)	71
Specmanship - part 1 - the Decibel	22
The simplest pattern generator	34
UHF aerial distribution amplifier	31
Understanding Prestel	26
Vogad amplifier for intercarrier sound	46

Issue 139 August 1987

Article	Page
70cm pre-amplifiers	72
ATV software	10
BATC ’87 rally report	25
Colorise the Cropredy Test Card	20
Downstream Keyer	29
Grey/Colour bars for the ’WCY scan conv.’	38
In front of the tube - part 7	60
Let’s build a repeater - part 1, Transmitters	50
Satellite TV news	58
Software notebook - SSTV for Spectrum	41
Sound in the studio - part 1, Balancing	64
Specmanship - part 2 – Noise	32
TV repeaters - a definitive list	44
The SCART connector	89
W&D 24cm Power amplifier	87

Issue 140 November 1987

Article	Page
A ’non-sync’ detector	73
ATV repeaters - an overseas list	38
An A/V fader	7
An intercarrier sound demodulator	79
In front of the tube - part 8	32
LMW 1.3GHz pre-amp	35
Let’s build a repeater - part 2, Logic	26
Mitsumi TVRO modules	65
Modified sync separator for Teletron	71
More MSX software – Titler	21
New aerials and power amplifier for 24	63
Portable inverter	34
Problems with portable generators	18
SSTV tuning indicator	40
Servicing the TX-90 portable	47
Software notebook - Colour bars (Spectrum)	54
Some useful video circuits	44
Specmanship - part 3 – VSWR	75
TVI	81
The 24cm experience	14
The SCART connector again, more info	16
Timebase correction	52
Top of Frame ident	11
Two tapes, video and audio	68
Video handbook 2nd edition	50