Welcome
Username or Email:

Password:


Missing Code




[ ]
[ ]
Online
  • Guests: 66
  • Members: 0
  • Newest Member: omjtest
  • Most ever online: 396
    Guests: 396, Members: 0 on 12 Jan : 12:51
Members Birthdays:
One birthday today, congrats!
Daniel Davis (54)


Next birthdays
05/29 Zonalklism (34)
05/29 Dr Hankenstein (68)
05/30 Quantum Singularity (47)
Contact
If you need assistance, please send an email to forum at 4hv dot org. To ensure your email is not marked as spam, please include the phrase "4hv help" in the subject line. You can also find assistance via IRC, at irc.shadowworld.net, room #hvcomm.
Support 4hv.org!
Donate:
4hv.org is hosted on a dedicated server. Unfortunately, this server costs and we rely on the help of site members to keep 4hv.org running. Please consider donating. We will place your name on the thanks list and you'll be helping to keep 4hv.org alive and free for everyone. Members whose names appear in red bold have donated recently. Green bold denotes those who have recently donated to keep the server carbon neutral.


Special Thanks To:
  • Aaron Holmes
  • Aaron Wheeler
  • Adam Horden
  • Alan Scrimgeour
  • Andre
  • Andrew Haynes
  • Anonymous000
  • asabase
  • Austin Weil
  • barney
  • Barry
  • Bert Hickman
  • Bill Kukowski
  • Blitzorn
  • Brandon Paradelas
  • Bruce Bowling
  • BubeeMike
  • Byong Park
  • Cesiumsponge
  • Chris F.
  • Chris Hooper
  • Corey Worthington
  • Derek Woodroffe
  • Dalus
  • Dan Strother
  • Daniel Davis
  • Daniel Uhrenholt
  • datasheetarchive
  • Dave Billington
  • Dave Marshall
  • David F.
  • Dennis Rogers
  • drelectrix
  • Dr. John Gudenas
  • Dr. Spark
  • E.TexasTesla
  • eastvoltresearch
  • Eirik Taylor
  • Erik Dyakov
  • Erlend^SE
  • Finn Hammer
  • Firebug24k
  • GalliumMan
  • Gary Peterson
  • George Slade
  • GhostNull
  • Gordon Mcknight
  • Graham Armitage
  • Grant
  • GreySoul
  • Henry H
  • IamSmooth
  • In memory of Leo Powning
  • Jacob Cash
  • James Howells
  • James Pawson
  • Jeff Greenfield
  • Jeff Thomas
  • Jesse Frost
  • Jim Mitchell
  • jlr134
  • Joe Mastroianni
  • John Forcina
  • John Oberg
  • John Willcutt
  • Jon Newcomb
  • klugesmith
  • Leslie Wright
  • Lutz Hoffman
  • Mads Barnkob
  • Martin King
  • Mats Karlsson
  • Matt Gibson
  • Matthew Guidry
  • mbd
  • Michael D'Angelo
  • Mikkel
  • mileswaldron
  • mister_rf
  • Neil Foster
  • Nick de Smith
  • Nick Soroka
  • nicklenorp
  • Nik
  • Norman Stanley
  • Patrick Coleman
  • Paul Brodie
  • Paul Jordan
  • Paul Montgomery
  • Ped
  • Peter Krogen
  • Peter Terren
  • PhilGood
  • Richard Feldman
  • Robert Bush
  • Royce Bailey
  • Scott Fusare
  • Scott Newman
  • smiffy
  • Stella
  • Steven Busic
  • Steve Conner
  • Steve Jones
  • Steve Ward
  • Sulaiman
  • Thomas Coyle
  • Thomas A. Wallace
  • Thomas W
  • Timo
  • Torch
  • Ulf Jonsson
  • vasil
  • Vaxian
  • vladi mazzilli
  • wastehl
  • Weston
  • William Kim
  • William N.
  • William Stehl
  • Wesley Venis
The aforementioned have contributed financially to the continuing triumph of 4hv.org. They are deserving of my most heartfelt thanks.
Forums
4hv.org :: Forums :: Electromagnetic Radiation
« Previous topic | Next topic »   

Data transmission using amateur radio

Move Thread LAN_403
coillah
Tue May 25 2010, 05:08PM Print
coillah Registered Member #1517 Joined: Wed Jun 04 2008, 06:55AM
Location: Chico CA
Posts: 304
Hi everybody,

I just got a job working for my school on some engineering projects over the summer. I've been told to investigate building an amateur radio transmitter for relaying video and control signals between a car and remote operator. I am currently studying to get my ham license but I was hoping to get some input on the entire idea while I prepared.

Thanks in advance!
Back to top
coillah
Tue May 25 2010, 06:43PM
coillah Registered Member #1517 Joined: Wed Jun 04 2008, 06:55AM
Location: Chico CA
Posts: 304
Reading more about this stuff I came across Link2

Very interesting...
Back to top
Sulaiman
Tue May 25 2010, 08:06PM
Sulaiman Registered Member #162 Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3141
This year I have been 'dabbling' in the GHz region and my sincere advice to you is
don't even consider homebrew !
(other than connecting pre-manufactured modules together etc.)
If nothing else, how will you know that you're not generating out-of-band signals?

Loads of info here Link2

For the video part I would start with a "wireless video" search on eBay.

For the control;
- hobby RC
- modem - pair of cheap handheld vhf or uhf transceivers - modem
- audio channel of a video/audio wireless link with modems.
- cheap/used CB transceivers etc........

I lost a Jintong (3W) and now have a Puxing PX777 (5W and better features) both from eBay and I can recommend both as good cheap fm transceivers.
Back to top
radiotech
Wed May 26 2010, 04:41AM
radiotech Registered Member #2463 Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546
Amateur radio transmissions are subject to content regulations. Also be sure the remote operations are within regulations. Good luck on the ham ticket study.
Back to top
coillah
Wed May 26 2010, 07:08PM
coillah Registered Member #1517 Joined: Wed Jun 04 2008, 06:55AM
Location: Chico CA
Posts: 304
How crazy would it be to attempt HSMM on 70cm using a transverter? Is it conceivable? What would it take?

From what I have been reading here:
Link2

it sounds like we're on the brink. Anyone have some guiding advice if I was perhaps interested in working on that?

We are also thinking about employing something like eQSO to be able to access repeaters and transmit remotely. I am trying to imagine ways we could kludge something for the kind of data rates we'll be looking at... btw the data rates are at around 100kbs...
Back to top

Moderator(s): Chris Russell, Noelle, Alex, Tesladownunder, Dave Marshall, Dave Billington, Bjørn, Steve Conner, Wolfram, Kizmo, Mads Barnkob

Go to:

Powered by e107 Forum System
 
Legal Information
This site is powered by e107, which is released under the GNU GPL License. All work on this site, except where otherwise noted, is licensed under a Creative Commons Attribution-ShareAlike 2.5 License. By submitting any information to this site, you agree that anything submitted will be so licensed. Please read our Disclaimer and Policies page for information on your rights and responsibilities regarding this site.