TV Transmitter Kit.pdf

TELEVISION

TRANSMITTER KIT

Ramsey Electronics Model No. TV6

Don’t string cables through the house! Transmit your

VCR or camera signal to any nearby TV set with great

audio and video quality. You can be the program

manager of your own Mini-TV station!

Typical uses of the TV transmitter:

• Watching one VCR from anywhere in the house

• Using the camcorder camera to watch remote areas

• Hidden camera fun

• Home TV station

• Student TV station

The Ramsey TV6 transmitter features:

• Runs on 12 to 15 volts DC

• On-board whip antenna

• Stable output adjustable to channels 3 - 6

• Clear, concise step-by-step instructions

• Video and Audio inputs compatible with any VCR or TV

camera

TV6 • 1

RAMSEY TRANSMITTER KITS

• FM-10A, FM-25 FM Stereo Transmitters

• The “Cube” Video Transmitters

• AM-1, AM-25 AM Transmitters

RAMSEY RECEIVER KITS

• FR-1 FM Broadcast Receiver

• AR-1 Aircraft Band Receiver

• SR-1 Shortwave Receiver

• AA-7 Active Antenna

• SC-1 Shortwave Converter

RAMSEY HOBBY KITS

• SG-7 Personal Speed Radar

• SS-70A Speech Scrambler

• SP-1 Speakerphone

• MD-3 Microwave Motion Detector

• PH-10 Peak hold Meter

• LC-1 Inductance-Capacitance Meter

RAMSEY AMATEUR RADIO KITS

• FX VHF Transceiver

• HR Series HF All Mode Receivers

• QRP Series HF CW Transmitters

• CW-700 Micro Memory CW Keyer

• PA Series VHF and UHF Power Amplifiers

• Packet Computer Interfaces

• QRP Power Amplifiers

RAMSEY MINI-KITS

Many other kits are available for hobby, school, Scouts and just plain FUN.

New kits are always under development. Write or call for our free Ramsey

catalog.

TV6 TV TRANSMITTER KIT INSTRUCTION MANUAL

Ramsey Electronics publication No. MTV6 Revision 1.2a

First printing: January 1995

permission of Ramsey Electronics, Inc. Printed in the United States of America.

TV6 • 2

Ramsey Publication No. MTV6

Price $5.00

KIT ASSEMBLY

AND INSTRUCTION MANUAL FOR

TELEVISION

TRANSMITTER

TABLE OF CONTENTS

Introduction to the TV6................... 4

Building your kit.............................. 4

Parts list ......................................... 5

TV6 Circuit description ................... 6

Schematic diagram ........................ 8

Parts placement ............................. 9

TV6 assembly instructions ........... 10

Testing, adjustments .................... 13

Troubleshooting guide.................. 15

Appendix A, FCC Rules ............... 16

Ramsey kit warranty..................... 23

RAMSEY ELECTRONICS, INC.

793 Canning Parkway

Victor, New York 14564

Phone (716) 924-4560

Fax (716) 924-4555

TV6 • 3

INTRODUCTION TO THE TV6:

The answer to all your TV and VCR hook-up problems is now in your hands.

Your TV6 TV Transmitter kit is the handy "wireless wire" you can use to

connect up the whole house for TV of your choice!

The TV6 accepts normal video and audio signals from VCRs, camcorders, or

TV cameras and generates a low power TV signal that can be picked up by

nearby TV sets. Please be aware that this kit is a real transmitter and can be

received by others - whether they want to or not! Be especially cautious to not

cause any interference to neighbors or others close by, they are entitled to

enjoy their own choice of programming without any interference from you. Pay

particular attention to the FCC Rules section later in the manual.

In keeping with our spirit of getting folks to build and learn, you'll see that your

kit has step-by-step instructions that carefully guide you to a finished, fully

operating kit. And, you'll not only build the kit, but learn it too! Kit building is a

fun and rewarding way to spend an evening at home, especially on a cold

winter night.

BUILDING YOUR KIT:

Many Ramsey kits can be classified as single evening kits suitable for

beginners or old pros and this one is no exception. But, don't let confidence

get in the way of better judgment. With well over 100 solder joints, even being

right 99% of the time will still allow one error to creep in! Therefore, please

take to heart these following guidelines:

• Use a comfortable soldering iron or pencil for assembly. 30 to 50

watts is ideal.

• Keep your iron tip clean; it will then produce professional, shiny

and reliable joints. Use a damp sponge to wipe your tip before

every joint. Use the wife's kitchen sponge and not your expensive

super-dandy-whiz-bang car wash sponge!

• Good lighting is a must; why strain yourself with poor lighting?

• Take advantage of the fact that our manuals are written in stages,

take a break between sections and check your work before

proceeding on.

• Be on the look-out after each solder joint for a splash, bridge or

errant wire lead that could prove hard to find later.

• Enough said, let's get building....

TV6 • 4

TV6 PARTS LIST:

CAPACITORS

7 .001 uf disc (marked .001 or 102 or 1nf) [C3,4,5,6,11,14,15]

2 39 pf disc [C7,9]

1 100 pf disc (marked 100 or 101) [C10]

2 68 pf disc [C12,13]

1 270 pf disc [bottom of PC board]

1 2.2 uf electrolytic [C2]

1 100 uf electrolytic [C1]

2 1000 uf electrolytic [C8,16]

SEMICONDUCTORS

1 1N4148 or 1N914 diode [D1]

2 1N4002 diode [D2,3]

4 2N3904 NPN transistor [Q1,2,3,4]

1 2N3866 NPN transistor [Q5]

1 7808 voltage regulator [VR1]

INDUCTORS

1 .15 uh miniature inductor (has brown and green bands) [L5]

2 2.2 uh miniature inductor (green body with 2 red bands) [L2,3]

1 5.5 turn slug tuned coil [L4]

1 IF can style RF transformer (marked 42IF122) [L1]

RESISTORS

3 1K ohm (brown-black-red) [R1,2,11]

2 4.7K (yellow-violet-red) [R4,8]

2 10K (brown-black-orange) [R9,10]

1 47K (yellow-violet-orange) [R5]

2 75 ohm (violet-green-black) [R6,12]

1 1K trimmer potentiometer (yellow adjuster) [R7]

1 5K trimmer potentiometer (yellow adjuster) [R3]

CONTROLS AND HARDWARE

1 Pushbutton switch [S1]

3 PC mount RCA phono jacks [J1,2,3]

1 DC power jack [J4]

1 Telescopic whip antenna [Ant 1]

1 Printed circuit board [TV6]

1 Plastic tuning tool “diddle stick”

TV6 • 5

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