View with Power Point...

290 views
228 views

Published on

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
290
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
4
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

View with Power Point...

  1. 1. Amateur Television
  2. 2. Glossary <ul><li>Frame </li></ul><ul><ul><li>Single Picture </li></ul></ul><ul><li>Field </li></ul><ul><ul><li>½ Picture </li></ul></ul><ul><li>Interlaced </li></ul><ul><ul><li>Draws ½ Picture then draws the second half </li></ul></ul>
  3. 3. Glossary <ul><li>Interlace </li></ul>
  4. 4. Broadcast TV <ul><li>Bandwidth </li></ul><ul><ul><li>6MHz </li></ul></ul>
  5. 5. Broadcast TV <ul><li>525 Lines per frame </li></ul><ul><ul><li>262 ½ Lines per field </li></ul></ul><ul><li>30 Frames per second </li></ul><ul><ul><li>Full motion video </li></ul></ul>
  6. 6. Amateur Television <ul><li>Types of ATV </li></ul><ul><ul><li>SSTV </li></ul></ul><ul><ul><ul><li>Slow Scan Television </li></ul></ul></ul><ul><ul><li>FSTV </li></ul></ul><ul><ul><ul><li>Fast Scan Television </li></ul></ul></ul>
  7. 7. Slow Scan TV <ul><li>Single frame of video </li></ul><ul><ul><li>Scan convert a frame to audio then transmit the audio </li></ul></ul><ul><ul><li>Recent happenings </li></ul></ul><ul><ul><ul><li>Web Cams and Video capture cheap </li></ul></ul></ul><ul><ul><ul><li>Use sound card to generate tones </li></ul></ul></ul><ul><ul><ul><li>Rig Blaster, BuxComm interfaces </li></ul></ul></ul><ul><ul><ul><li>Freeware/Shareware software </li></ul></ul></ul>
  8. 8. Fast Scan TV <ul><li>Usable Frequencies </li></ul><ul><ul><li>70cm </li></ul></ul><ul><ul><ul><li>First ham band that is wide enough to allow full 6MHz bandwidth </li></ul></ul></ul><ul><ul><ul><li>Standard Frequencies </li></ul></ul></ul><ul><ul><ul><ul><li>421.25 MHz </li></ul></ul></ul></ul><ul><ul><ul><ul><li>426.25 MHz </li></ul></ul></ul></ul><ul><ul><ul><ul><li>427.25 MHz </li></ul></ul></ul></ul><ul><ul><ul><ul><li>434.00 MHz </li></ul></ul></ul></ul><ul><ul><ul><ul><li>439.25 MHz </li></ul></ul></ul></ul>
  9. 9. Fast Scan TV <ul><li>Usable Frequencies </li></ul><ul><ul><li>33cm 902 – 928 MHz </li></ul></ul><ul><ul><li>23cm 1240-1300 MHz </li></ul></ul><ul><ul><li>13cm 2390 – 2450 MHz </li></ul></ul>
  10. 10. 70cm FS ATV <ul><li>Station Requirements </li></ul><ul><ul><li>Receive </li></ul></ul><ul><ul><ul><li>Television Receiver </li></ul></ul></ul><ul><ul><ul><ul><li>Channel 57 (421.25MHz) </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Channel 60 (439.25MHz) </li></ul></ul></ul></ul><ul><ul><ul><li>Down Converter Tuner </li></ul></ul></ul>
  11. 11. 70cm FS ATV <ul><li>Station Requirements </li></ul><ul><ul><li>Transmit </li></ul></ul><ul><ul><ul><li>Video Source </li></ul></ul></ul><ul><ul><ul><ul><li>Camcorder </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Camera </li></ul></ul></ul></ul><ul><ul><ul><li>Audio Source </li></ul></ul></ul><ul><ul><ul><ul><li>Microphone </li></ul></ul></ul></ul><ul><ul><ul><li>Transmitter </li></ul></ul></ul><ul><ul><ul><ul><li>Off the Shelf </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Commercial Equipment </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Home Brew </li></ul></ul></ul></ul>
  12. 12. 70cm FS ATV <ul><li>Station Requirements </li></ul><ul><ul><li>Antenna </li></ul></ul><ul><ul><ul><li>Horizontal Polarization </li></ul></ul></ul><ul><li>Operator Requirements </li></ul><ul><ul><li>Technician Class </li></ul></ul>
  13. 13. 70cm FS ATV <ul><li>Off the Shelf Equipment </li></ul><ul><ul><li>PC Electronics </li></ul></ul><ul><ul><ul><li>TC70-20S </li></ul></ul></ul><ul><ul><ul><ul><li>Synthesized 4 Channel Transmitter </li></ul></ul></ul></ul><ul><ul><ul><ul><ul><li>20 W Output </li></ul></ul></ul></ul></ul><ul><ul><ul><ul><li>Built in Tuner/Down Converter </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Video, Audio, MIC, and PTL Inputs </li></ul></ul></ul></ul><ul><ul><ul><ul><li>$549 </li></ul></ul></ul></ul>
  14. 14. 70cm FS ATV <ul><li>Commercial Equipment </li></ul><ul><ul><li>Cable Modulators </li></ul></ul><ul><ul><ul><li>Need 25 KHz steps </li></ul></ul></ul><ul><ul><ul><li>Blonder Tongue (Agile Modulator) </li></ul></ul></ul><ul><ul><ul><ul><li>Video, Audio Inputs </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Low Power Output </li></ul></ul></ul></ul><ul><ul><ul><ul><ul><li>Will require an amplifier </li></ul></ul></ul></ul></ul><ul><ul><ul><ul><li>Typically available on eBay </li></ul></ul></ul></ul><ul><ul><ul><ul><ul><li>Running around $50 last year </li></ul></ul></ul></ul></ul><ul><ul><ul><ul><ul><li>Significantly higher recently </li></ul></ul></ul></ul></ul>
  15. 15. 70cm FS ATV <ul><li>Home Brew Equipment </li></ul><ul><ul><li>PC Electronics </li></ul></ul><ul><ul><ul><li>Individual pieces </li></ul></ul></ul><ul><ul><ul><ul><li>Power Amps </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Modulators </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Down Converter </li></ul></ul></ul></ul><ul><ul><li>4ATV.com </li></ul></ul><ul><ul><ul><li>13cm and 23cm equipment </li></ul></ul></ul><ul><ul><li>MFJ </li></ul></ul><ul><ul><ul><li>Micro ATV </li></ul></ul></ul>
  16. 16. 70cm FS ATV <ul><li>Transmission Distance (Miles) </li></ul>133 53 21 16dBd 53 21 8 8dBd 21 8 3.4 Dipole 16dBd 8dBd Dipole Ant. Gain
  17. 17. 70cm FS ATV <ul><li>Local Usage </li></ul><ul><ul><li>Repeaters </li></ul></ul><ul><ul><ul><li>WA2PJP/R </li></ul></ul></ul><ul><ul><ul><ul><li>Located on Bald Hill in Selden </li></ul></ul></ul></ul><ul><ul><ul><ul><li>434.00MHz Input 421.25MHz Output </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Talkback 144.34MHz or 144.37 MHz </li></ul></ul></ul></ul><ul><ul><ul><li>W1NRE/R </li></ul></ul></ul><ul><ul><ul><ul><li>Located in Southern CT. </li></ul></ul></ul></ul><ul><ul><ul><ul><li>426.25MHz Input 439.25MHz Output </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Talkback 144.34MHz </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Currently Off the Air </li></ul></ul></ul></ul><ul><ul><ul><ul><ul><li>Power Problems </li></ul></ul></ul></ul></ul>
  18. 18. 70cm FS ATV <ul><li>Local Usage </li></ul><ul><ul><li>Operators </li></ul></ul><ul><ul><ul><li>WA2PJP – Joe (Wednesday 8PM) </li></ul></ul></ul><ul><ul><ul><li>WA2FNQ – Jerry (Wednesday 8PM) </li></ul></ul></ul><ul><ul><ul><li>W1CTC – Bob (Wednesday 8PM) </li></ul></ul></ul><ul><ul><ul><li>W2OTA – Mike (Nightly 7PM) </li></ul></ul></ul>
  19. 19. ATV Links <ul><li>PC Electronics </li></ul><ul><ul><li>www.hamtv.com </li></ul></ul><ul><li>ATV Research </li></ul><ul><ul><li>www.atvreasearch.com </li></ul></ul><ul><li>Directive Systems </li></ul><ul><ul><li>Antennas </li></ul></ul><ul><ul><li>www.directivesystems.com </li></ul></ul><ul><ul><li>www.icircuits.com </li></ul></ul>
  20. 20. ATV Links <ul><li>Intuitive Circuits </li></ul><ul><ul><li>Video Overlays, Character Generators </li></ul></ul><ul><ul><li>www.icircuits.com </li></ul></ul><ul><li>Connecticut – Long Island ATV </li></ul><ul><ul><li>www.ctliatv.org </li></ul></ul><ul><li>Southern CT Amateur Radio Assn </li></ul><ul><ul><li>www.wa2fnq.hamradios.com/scara.htm </li></ul></ul>

×