With winter upon us here in the northern hemisphere many of us will do some indoor whoop'n. This will be my first indoor season and I have questions.

I have seen many videos of folks tearing around their houses up and down stairs and all over. I can't seem to get that far away without loss of video or horrible breakup. I wanted to ask if there is a certain combination of antenna for my EV800D's that will work better than the stock ones it came with.
I do understand the limitations of 5.8ghz in a multipath environment but would like the best I can get. Or is the trick running 2 patch antennas or 2 circular pitch ?
Or just a better quality pair ( one of each ) than are on the goggles now.
The vtx's are all 25mw and have the stubby dipole antennas. These are 30gram with battery whoops so can't change much on them. On one of them I do have a better quality camera/vtx  ( Caddix firefly ) and I do get a little better penetration with it. But still can't "change floors" in the house.

Your thoughts are welcomed and "Happy New Year "  ( I went to the liquor store today, boy were they busy !!  )

Scott

I have a two story house. And I can go through the whole house with the dipoles antenna that comes with my Baby Hawk.

I have a Fatshark with TrueD one circular and one patch.

I wonder if walls are more dense. Mine are basic wood frame with drywall.

Thanks voodoo
Same here, basic wood frame with drywall. If I sit on the basement steps I can do the whole basement even the shop, I do get a pretty bad signal when I go behind the milling machine so I just go faster so it out of the bad spot faster but If I go upstairs from the basement the back of the house is un-flyable. If I sit on the first floor it is all doable but I can't go downstairs.

Scott

With indoor, I think dual omnidirectional antennas is likely best. Maybe two different style. Patch is useless because the quad is really never in front of you.

With these cheaper VTX, sometimes the frequency is slightly off. I have scanned and pick up better signal from a different frequency. Sometimes just a few hz off.

Thanks voodoo I have some I can try out tomorrow if I'm feeling up to flying  ( where's the "I'm hung over" smile )

Scott

Linear antenna (the dipole you get from most VTX and VRX) are not the best for indoor because they are very sensitive to multipath interference which you get a lot flying in the house.
You should get much better signal using circular polarized antennas with good axial ratio
If you want to learn more about antennas take a look at this article:
https://oscarliang.com/best-fpv-antenna/

Hi Oscar, thanks.
My flying skills will not allow the use of the vertical cloverleaf, I would tear that sucker off in no time.   And I don't really want to add any weight on these little whoops. If I put a hoop around the cloverleaf that would add several grams.

I did switch the patch antenna this morning to another Omni style, a VAS ion left hand and I now have reception over the whole house !! It is a little fuzzy when I get as far away as possible but still flyable.

I was looking at these https://www.getfpv.com/ibcrazy-cloverlea...-rhcp.html and was wondering how small they are ?


Are they as big as the ones that come on AIO cameras ? or are they a mini size ?  Could I run it out the back of the whoop like the dipole ?

If not I think I am good for now.

Thanks a lot guys

Scott

(01-Jan-2019, 05:33 PM)Scott_M Wrote: I was looking at these https://www.getfpv.com/ibcrazy-cloverlea...-rhcp.html and was wondering how small they are ?

Are they as big as the ones that come on AIO cameras ? or are they a mini size ?  Could I run it out the back of the whoop like the dipole ?

There is one fitted to the following tiny whoop on RotorBuilds that will give you an idea of the size...

https://rotorbuilds.com/build/2954

Keep in mind that each of the "cloverleaf" wires are supposed to be quite fragile so I don't know how many crashes they will take. Maybe the power of a tiny whoop isn't enough to to cause them to be damaged as easily in a crash. I don't know.

Thanks Snow
They seem to be just as big as the regular ones. I am guessing full wavelength. I was hoping for a tiny one, maybe 1/4 WL, not even sure that is possible with this style.

Scott

If you want circular polarity, and willing to do some modification. I recommend the AXII MMCX. See size comparison at link. These are more durable than the cloverleaf. You will need to cut the MMCX off and separate the center wire and shielding and resolder to the VTX.

https://www.getfpv.com/lumenier-axii-mmc...-rhcp.html

AXII are expensive. For the bigger size, weight and durability, get A Pagoda MMCX and do the same modification.

Size comparison 



https://www.readymaderc.com/products/det...enna-black

Thanks voodoo
or maybe stay with the dipole and go to 200mw
https://www.readymaderc.com/products/det...audio-mmcx



I had not heard of that outfit before, they are only about 100 miles from here ( quick shipping )  Thanks

Scott

Before you pull the trigger, 200mW VTX actually can be worse indoor due to all the walls and rebound of signal. Here is an example.



ReadymadeRC is a solid vendor. Probably one of the first good FPV vendor. Also one of the first to have they owe well made frames. That is where you have to buy the Screech, which I built and destroyed.

Good point
Nice to know about ReadymadeRC.

I also haven't tried different bands and freq.'s I may be able to "tune" to closer matched signal. I am on A3 now ( 5825 ) it was fine outside. But I am pretty close to one end of the range. I'll try the both ends and the middle of race band and see if one of those is better for indoor use before I buy anything.

Scott