Turnigy 9x 8 channel rx aerial problem

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Turnigy 9x 8 channel rx aerial problem

Postby bloodnock » Sun Sep 05, 2010 5:36 pm

The 8 channel receiver with my new Turnigy 9x was a real Friday made one. None of the servo plugs would fit due to the pins fouling the case, then the brass tube at the end of the aerial fell off reducing the range to around 10 mtrs. The aerial looks complex, is there any solution other than the bin?
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Re: Turnigy 9x 8 channel rx aerial problem

Postby RCModelReviews » Mon Sep 06, 2010 12:50 am

The antenna is simply what's called a "sleeved dipole". You can get the same effect by peeling back the outer metal braid of the antenna wire to the same length as the brass section was and pulling it back over the remainder of the cable. Trim the (now much longer) inner to the length that was previously poking out and put heatshrink over the whole lot -- that should work. I can do a diagram if that's not clear.
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Re: Turnigy 9x 8 channel rx aerial problem

Postby JMP_blackfoot » Mon Sep 06, 2010 1:37 am

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Re: Turnigy 9x 8 channel rx aerial problem

Postby RCModelReviews » Mon Sep 06, 2010 3:31 am

Exactly
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Re: Turnigy 9x 8 channel rx aerial problem

Postby bloodnock » Mon Sep 06, 2010 7:44 am

Many thanks, thats just what I needed - and so quick too.
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Re: Turnigy 9x 8 channel rx aerial problem

Postby JMP_blackfoot » Tue Sep 07, 2010 2:04 am

Do tell us how it worked for you, with maybe a range test?
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Re: Turnigy 9x 8 channel rx aerial problem

Postby bloodnock » Tue Sep 07, 2010 3:05 am

Great - it worked a treat but teasing the coax back over the cable was fun! Quick range check (150 metres) looks good but wet weather has prevented a full range check.
Thanks again folks.
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Re: Turnigy 9x 8 channel rx aerial problem

Postby bloodnock » Wed Sep 08, 2010 11:18 am

Just an update. Range seems limited to 150 metres but I did not get a chance to range check that receiver before the aerial fell apart so it may well be the receiver and not the new aerial mod. that is the problem. For interest, I borrowed my son's 3 channel GT2 rx from his model car for a comparison and stopped walking at over 500 metres when it was still going strong. That looks like a single aerial on that. Pretty good for a $6 rx. I also tried an aerial from an old GT2 rx on the 8 channel rx and got the same 150 mtrs as before.
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Re: Turnigy 9x 8 channel rx aerial problem

Postby RCModelReviews » Wed Sep 08, 2010 11:22 pm

Maybe your transmitter module/antenna is a bit suspect too.

My ground testing showed that the V2 system was still rock-solid at 500m on the ground so something is not quite right.
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Re: Turnigy 9x 8 channel rx aerial problem

Postby derku » Thu Sep 09, 2010 2:34 pm



I accidentally trimmed too deep on one of my receivers and much of the outer braid came off - if you dont put the outer braid back down the antenna, would this severly affect its performance?

Thanks in advance,
Derku
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