FPV HUB

Radio Equipment => UHF Systems => Topic started by: n00b@FPV on November 26, 2011, 08:12:15 PM

Title: The New ChainLinkDare!
Post by: n00b@FPV on November 26, 2011, 08:12:15 PM
http://www.bevrc.com/chainlinkdare-uhf-long-range-system-p-272.html (http://www.bevrc.com/chainlinkdare-uhf-long-range-system-p-272.html)

new diversity recivers basiclly
(http://www.bevrc.com/images//e-dm/paypal/ChainLinkDare%201.jpg)
(http://www.bevrc.com/images//e-dm/paypal/ChainLinkDare.jpg)
Title: Re: The New ChainLinkDare!
Post by: Sheldon Holy on November 26, 2011, 08:50:12 PM
We ordered one last week, so when (if, I suppose) it arrives I'll post some pics.
Title: Re: The New ChainLinkDare!
Post by: g.collins on November 26, 2011, 09:10:36 PM
great news, something else that you cant buy, because of no stock, I have made a brilliant VTX it will give you perfect video up to 1000 miles, yours for a tenner, unfortunately I haven't got any in stock. sorry
;D G
Title: Re: The New ChainLinkDare!
Post by: Dizzy on November 26, 2011, 09:45:41 PM
G-collins your priceless :P

can i pre order x2 for 2015 thanks ;D

dizzy
Title: Re: The New ChainLinkDare!
Post by: Sheldon Holy on November 26, 2011, 09:52:50 PM
Quote from: Dizzy on November 26, 2011, 09:45:41 PM
G-collins your priceless :P

can i pre order x2 for 2015 thanks ;D

dizzy

Yes hilarious G  ;D

We pre-ordered it last week, since then it has gone out of stock so I honestly have no idea when it will turn up.

Title: Re: The New ChainLinkDare!
Post by: keith on November 27, 2011, 12:41:38 PM
Could someone explain what these are, exactly? I've seen that you can them as a transmitter for a Futaba by plugging them into the trainer port, but where does the "diversity" element come into it? That's about choosing the better of two signals, isn't it?

Cheers,
Keith
Title: Re: The New ChainLinkDare!
Post by: Dizzy on November 27, 2011, 01:13:30 PM
Hi Keith the reciever diversity that is mentioned is actually two recievers in one case it compares the two signals and outputs from them with hopefully the correct signals to your servos's Hence the two connections for two antenna

hope that helps

dizzy
Title: Re: The New ChainLinkDare!
Post by: keith on November 27, 2011, 01:21:35 PM
Cheers, Dizzy. So say I plug this into the back of my Futaba. Do both this unit and the Futaba then transmit a signal - the Futaba on 2.4ghz, and this on UHF - and then the receiver uses whichever signal is the strongest?
Title: Re: The New ChainLinkDare!
Post by: Sheldon Holy on November 27, 2011, 07:18:23 PM
Quote from: keith on November 27, 2011, 01:21:35 PM
Cheers, Dizzy. So say I plug this into the back of my Futaba. Do both this unit and the Futaba then transmit a signal - the Futaba on 2.4ghz, and this on UHF - and then the receiver uses whichever signal is the strongest?

One signal transmitted by this unit that sticks on the back of your Tx. You have two antennas in different places on the plane and the idea is that it picks the signal from whatever antenna with the best reception. It doesn't use the 2.4GHz signal at all.
Title: Re: The New ChainLinkDare!
Post by: keith on November 27, 2011, 09:20:17 PM
Quote from: Sheldon Holy on November 27, 2011, 07:18:23 PM
One signal transmitted by this unit that sticks on the back of your Tx. You have two antennas in different places on the plane and the idea is that it picks the signal from whatever antenna with the best reception. It doesn't use the 2.4GHz signal at all.
Thanks, Sheldon. It's starting to drop into place now. I guess you could have one antenna mounted vertically and one mounted horizontally, and then you wouldn't run into problems if you were running a linearly polarized antenna on the transmitter.

I've seen a few set-ups like this one (http://screencast.com/t/hSUKuMux). That guy is using a Scherrer which I believe is similar to the Chainlink. I'm guessing that one of those is a patch antenna. Would that be right? How would that connect to his transmitter? Would he just run a cable from it?

Title: Re: The New ChainLinkDare!
Post by: Sheldon Holy on November 28, 2011, 10:31:10 AM
Hmm...

I would imagine those patch antennas are for receiving his video signal.

I guess the polarization thing makes sense, but I don't really know. Ask in the shoutbox and there will be people who are far more knowledgeable than me on that subject. If you can, try and collar Coyote, he knows everything :)
Title: Re: The New ChainLinkDare!
Post by: keith on November 28, 2011, 12:05:45 PM
Will do, Sheldon. Thanks for your help.