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Old Feb 27, 2012, 10:57 AM
H19
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United States, ME, South Portland
Joined Feb 2011
187 Posts
can i use, RG-6 75ohm 3.0GHZ direct TV digital cable?
or
F6TSVV-or-UU-cant read it right) ETL CATTV 18AWG

to make a BiQuad?

thanks
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Old Mar 30, 2012, 07:20 PM
You can't take the sky from me
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Slovakia, Bratislava Region, Bratislava
Joined Jun 2006
752 Posts
Hi Alex, please, is it OK to cover resonator with plastic cover - in this example I used plastic box from Carte D'or ice cream ? Or it will damage the antenna gain or characteristics or all together...
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Old Mar 31, 2012, 03:43 AM
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Joined Jul 2009
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Quote:
Originally Posted by Rastislavko View Post
Hi Alex, please, is it OK to cover resonator with plastic cover - in this example I used plastic box from Carte D'or ice cream ? Or it will damage the antenna gain or characteristics or all together...
I do not think there are problems, it's just plastic!
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Old Apr 07, 2012, 02:06 PM
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United States, UT, Ogden
Joined Oct 2008
35 Posts
5.8ghz Biquad

Hey, I freaking love this Antenna, I built one for these Biquads for 5.8ghz. I'm

Running one of your clover leaf antennas on my Transmitter, and this biquad, on

the receiver. Its flawless video, I haven't found the limits yet. Iv'e been out over three

miles and not a blip. My Dad has access to a network analyzer. These are the

results of my Biquad. -20.60dB and a 1.2swr
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Old Apr 07, 2012, 09:14 PM
Engineer for Christ
IBCrazy's Avatar
Amherst, VA
Joined Jun 2006
10,538 Posts
Quote:
Originally Posted by Rastislavko View Post
Hi Alex, please, is it OK to cover resonator with plastic cover - in this example I used plastic box from Carte D'or ice cream ? Or it will damage the antenna gain or characteristics or all together...
That cover is fine. Good idea, actually.
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Old Apr 08, 2012, 10:45 AM
Still hackin'
Thermicdude's Avatar
Port Elizabeth, South Africa
Joined Nov 2005
428 Posts
Tuning

Hi Alex - how do you tune a BiQuad for SWR? ie you can trim a patch and use gamma match on a yagi...
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Old Apr 08, 2012, 10:47 AM
MyFlyDream
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The Netherlands
Joined Jun 2010
414 Posts
Quote:
Originally Posted by Thermicdude View Post
Hi Alex - how do you tune a BiQuad for SWR? ie you can trim a patch and use gamma match on a yagi...
Make the figure 8 as best as you can in measurements..
Then tune it by moving the figure 8 up and down from the reflector plate
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Old Apr 08, 2012, 10:52 AM
Still hackin'
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Port Elizabeth, South Africa
Joined Nov 2005
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Quote:
Originally Posted by erazotropa View Post
Make the figure 8 as best as you can in measurements..
Then tune it by moving the figure 8 up and down from the reflector plate
Duh... that makes sense!
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Old May 27, 2012, 06:41 AM
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Australia, QLD, Maleny
Joined Jul 2009
376 Posts
I'm struggling to find a solderable reflector for a reasonable price, do you think this would be ok http://www.ebay.com/itm/1-X-Copper-P...item4ab435f257
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Old May 30, 2012, 04:05 AM
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Port Elizabeth, South Africa
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Quote:
Originally Posted by hwat rc View Post
I'm struggling to find a solderable reflector for a reasonable price, do you think this would be ok http://www.ebay.com/itm/1-X-Copper-P...item4ab435f257
I used PCB on mine - perfect
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Old May 30, 2012, 04:37 AM
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Portugal
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+1

Used single sided copper clad PCB
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Old May 30, 2012, 09:07 AM
KJ4YYJ
EugeneFlorida's Avatar
Saint Petersburg FL
Joined Jun 2009
763 Posts
New at this

BiQuad 11dbi antenna.

what would give the further distance.
A BiQuad with 4 squares in a row
or
Two BiQuad on stacked on top of the other?

Thanks for the Help
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Old Jun 04, 2012, 11:21 AM
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Joined Oct 2006
30 Posts
Pcb active element?

Has any one made the active element from a etched pcb trace. I am considering making the bowtie for 2.4ghz by etching on a pcb. I see a lot of commercially made antennas use this method. Will it work as good as 14-16 awg?

Thanks

Joe
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Old Jun 23, 2012, 10:47 PM
100mph club member
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NW O-town
Joined Jun 2005
1,653 Posts
I've made two biquads for my 1280mhz diversity setup. For medium range flying (1-3 miles) what do you think is the best way to mount these both to my tripod? I'm thinking side by side angled up slightly of course and also so that each antenna's 50 degree beam overlaps the other by a few degrees? I don't have a tracker.
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Old Jun 25, 2012, 09:04 AM
Engineer for Christ
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Amherst, VA
Joined Jun 2006
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Quote:
Originally Posted by turbodriven View Post
I've made two biquads for my 1280mhz diversity setup. For medium range flying (1-3 miles) what do you think is the best way to mount these both to my tripod? I'm thinking side by side angled up slightly of course and also so that each antenna's 50 degree beam overlaps the other by a few degrees? I don't have a tracker.
I would say this is an acceptable system. In fact, this is exactly what I personally use. I angle mine at 45 degrees up with a 20 degree tilt

-Alex
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