DRAKE VM2551 User Manual

Amateur Television (ATV) This presentation is a brief introduction to give insight of ATV, how to get started, and how to get more information on

ATV Benefits • ATV enables hams to impress their friends with technical prowess. • ATV provides direct hands-on experience in transmitting television

ATV Frequencies in Reference to Broadcast and CATV Frequencies Broadcast OTA television now uses ATSC which occupies same spectrum except 698 MHz and

K6BEN: South Bay’s Amateur Television Station Video camera ("camcorder")1255 MHz ATV transmitter1.2GHz yagi highgain antenna1.2GHz Receive

Camera and 1.2GHz transmitter used for K6BEN Repeater ATV Videolnyx 1.2GHz transmitter on left, Downeast Microwave 1.2GHz linear amp on right. A c

ATV in the Field • Transmitting from field is more exciting and interesting than from a ham shack • Equipment (transmitters, TVs, cameras) should be

ATV Transmitters Bands to consider: • UHF (70cm) to transmit directly to cableready TV sets (421, 427, 434, 439 MHz) • 900 MHz, becoming more popula

420MHz, 70cm UHF Transmitters Main advantage is consumer TV sets (cable-ready) can directly receive transmissions • 70-10AD 70cm Transmitter (10W/3W/

Cable TV RF Modulators used as ATV UHF Transmitters Advantages of transmitting non-interfering signals directly to consumer TV sets Video (CATV) modu

900 MHz Transmitters and Receivers Used to be popular until overrun by Part 15 devices, now has renewed interest as many Part 15 services migrated to

1.2GHz Transmitters and Receivers Warning! Verify 1.2GHz transmitters operate only on amateur radio frequencies. Never buy anything else, most l

Amateur Television is NOT • Cellphone cam or webcam • Bluetooth, PDAs, Blackberries, etc. • WLAN, WIFI, or Internet related • Broadcast TV, Cable TV,

2.4GHz (13cm) 2300-2310 MHz, 2390-2450 MHz Very common and compatible with Part 15 wireless video systems which are low cost. Disadvantages are exces

Antennas, Cables, ID Overlays Antennas should be small for easy transport and setup, but “big” enough for RF gain. • Small yagi antennas • UHF J-po

ATV Receivers Cable ready TV sets that are direct tune, not autotune. Do not use “downconverters” for 70cm (not needed) unless for 900 or 1200MHz.

Single Point Failures! Lose one of these items and it is loss-of-mission for ATV in the field Everyone grabs the big items (camera, transmitter, anten

Digital Television (DTV) The Big Transition of 2009 applied only to commercial broadcast, hams can still use analog. Future of ATV regarding DTV tra

Digital Television (DTV) “Transmitter” Equipment DSE24, R.L. Drake High Definition TV Encoder with QAM Modulator, $1,185 http://www.atvresearch.com/d

Spectrum of NTSC and DTV From Nick N6QQQ youtube video, “San Francisco broadcast TV spectrum analyzer tour” taken before DTV transition at http://www

Future of ATV? iPhone making long distance ATV irrelevant: streaming video over internet is preferred method over long distance ATV Paradigm shift

Local ATV Groups Your first and fastest way to get into ATV is jump into a weekly net! Silicon Valley ATV Group - K6BEN http://www.mfwright.com/k6b

Amateur Television (ATV) Info Download this presentation from http://www.mfwright.com/ATVpresentation.pdf Amateur Television Network (ATN) http://

Amateur Television (ATV) Basics ATV is transmitting television through the air like commercial broadcasters. Presented here is fast scan analog telev

Simplex ATV composite video outVideo camera ("camcorder")RF outVideo transmitter420MHz, 900MHz, or 1.2GHzTransmitter antenna(J-pole, yagi)y

Camera and UHF cable TV modulator used for Simplex ATV Cable from camera has video (yellow RCA connector) and audio (black RCA connector). Powerp

Suggested Packaging of ATV Transmitters and Receivers Many ATV systems are sold board level. These must be packaged in boxes with common non-propriet

Camera and 1.2GHz transmitter used for Simplex ATV Packaged inside black box is a Mobicomm 1.2GHz transmitter board. RCA connectors for video inpu

Examples of ATV Reception Actual received amateur television transmissions using consumer cable-ready TV sets ATV demo during Ames Emergency P

Examples of ATV Transmission Actual amateur television transmitters, not models or toys ATV demo at Raynor Park Sunnyvale on Field Day