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Jan 22, 2012, 02:10 AM
Chinglish-funny
so not yours ,peter his rx also the got glitchy..
maybe you can make a video to show me the issue,and how to do the advanced binding mode.
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Jan 22, 2012, 02:28 AM
Member #1
Teamsherman's Avatar
Yep, both systems were glitching.
Jan 22, 2012, 03:23 AM
Registered User
Daemon's Avatar
And you tested that either one would stop glitching if the other one was off?

ian
Jan 22, 2012, 03:47 AM
Suspended Account
Quote:
Originally Posted by Daemon
And you tested that either one would stop glitching if the other one was off?

ian
ahhhhh yeah mate.. this aint the first time either teamsherman or i have used RC gear... lol
Jan 22, 2012, 07:17 AM
Chinglish-funny
Quote:
Originally Posted by Teamsherman
Yep, both systems were glitching.
email to me.

sid
Jan 22, 2012, 07:38 AM
NDw
NDw
Registered User
Quote:
Originally Posted by h0tr0d
Point being that you haven't posted enough information to help diagnose the issue. What antennas are you using on tx and rx? Are you holding the tx antenna vertical when you're pushing range?

I use the NA-771 whip attenuated down .5 db and the stock rangelink rx antenna Sid sells and still have 99% rssi @7km when I fly out in the middle of nowhere. When I fly in town around radio towers and on the other side of big buildings I take some big hits in RSSI even close in. Monitoring rssi is pretty much the MOST important thing to have on your OSD if you're attempting any range at all. According to your build pic I found, you're running CE OSD that requires you to solder 1 wire (instructions found on page 5 of ceosd manual) to enable the rssi display.
Out of curiousity did you find the NA-771 much better than the stock antenna? And why is it attenuated down .5 db?

Thanks.
Jan 22, 2012, 10:12 AM
KK4CCD
I Received my RangeLink yesterday. Thanks Sid for the very fast shipping. 9 days.
I was expecting at least 2 weeks considering the Chinese New Year.

R/Hank
Jan 22, 2012, 11:39 AM
FPV FTW
h0tr0d's Avatar
Quote:
Originally Posted by NDw
Out of curiousity did you find the NA-771 much better than the stock antenna? And why is it attenuated down .5 db?

Thanks.
Haven't really messed with the stock antenna for the TX. Sid recommended the diamond SRH-771 a while back and the Nagoya NA-771 is slightly less quality, but supposedly built in the same factory and half the price of the diamond. The only time I tested against the stock one was in micro power mode and I got a few steps more from the nagoya antenna over the stock one.

The RangeLink has good filtering on 1280Mhz, but when you have a lower output vtx and the vrx starts cranking in the gain at distance, it will start picking up more of the harmonic at (1299Mhz?) and distort the video. The clpfl 600 filter from digikey can be used on the rc tx, but it does attenuate the signal ~.5 db. A better SAW filter in the vrx will do the same thing, but it's harder to put in the vrx than it is to just screw the sma filter in line with the rc tx. Even with additional filtering that's really not needed (unless you're pushing distance), I'm seeing better RSSI numbers out of the RangeLink than I've seen from my friends with DragonLink.

Keep in mind that the issue with the harmonics is a problem with all UHF control systems used with 1280 video and not limited to the RangeLink.
Jan 22, 2012, 03:38 PM
Registered User
bingo17's Avatar
Quote:
Originally Posted by sid.huang
yeap,works with 2s or 3s lipo.
Thanks for the reply sid, I have another question.

I don't use a ground station, I have a lawmate 1.3GHz receiver mounted to the side of my goggles.
(So the receiver is in close proximity to the rc system)
If I use your lrs would I need a band pass filter for the lawmate?

Thanks
Jan 24, 2012, 06:52 AM
RC pilot by soul
Guys,

How bad will the range go down if i install the Rx dipole not straight (180 degrees) but with vertical elements (90 degrees to each other) ?
Jan 24, 2012, 07:11 AM
Registered FPVer :)
markus123456's Avatar
Quote:
Originally Posted by i3dm
Guys,

How bad will the range go down if i install the Rx dipole not straight (180 degrees) but with vertical elements (90 degrees to each other) ?
Assuming you keep it still vertical, this equals a so called vee antenna. It will be directional towards the "closer" end at the cost of the more "open" side. 90 degrees is a lot. This aporach only works if you can place the antenna compared to the level of the plane like this ">" cause if one of the poles is in the horizontal plane the directivity of the antenna would point towards the sky. Provided you can mount it as a vee, you should have the open side point in front of the plane so as you have best reception if you trun back to you. Otherwise you would have a high gain link when flying out but would risk to loose the signal once you try to return home.

If you need an alternative rx antenna, check out IBCrazy's turnstyle antenna. This antenna can be mounted horizontally and has four poles. Note, it's not just a cross kind of dipole there is more to it, but it's a good solution i.e. for wings. You would have to have the transmitter antenna horizontally too though as this antenna is horizontally oritented.

HTH

Markus
Jan 26, 2012, 04:16 AM
Registered User
mr..speed's Avatar
Hello Sid,
not sure if already asked, why is it not possible to have HT on channel 10 and 11 with a 9ch RC radio, That would be a nice feature adding additional channels.
It should be only a fw upgrade.
Last edited by mr..speed; Jan 28, 2012 at 05:09 PM.
Jan 26, 2012, 05:31 AM
Registered User
Anyone else running a sanders style antenna?

Got one made for the quad, seems to work alright

http://www.fpvmanuals.com/2011/03/23...nd-turn-style/
Jan 26, 2012, 05:56 AM
Opt
Opt
Registered User
Just got my rangelink
I have it working on the bench - it has bound and all servos are working.

When I connect the RSSI output to my OSD, the voltage jumps up and down between 0 and 1.5V or so. Any idea could be causing this?
Jan 27, 2012, 01:00 AM
Registered User
Locko's Avatar
Can you run your antenna like in this picture or will I loose range? ( Thats the wing picture)


If you run the antenna like this will you get interference from the Cp on 1w 1.3 lawman being so close?


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