Ez UHF issues

[Jameskibler]

the first graph is the baseline. nothing but rx connected to the computer via usb:

[Jameskibler]

With Vtx on:


Vtx power cable REMOVED:

[Flyn]

Hi bud, just a little confused....

your baseline shot shows more noise than the everything on shot?!?

As well your Vtx on & off graphs seem to be reversed - never seen a vtx lowering the noisefloor at about 12" from the rx

Can you double check fella ;)

[Jameskibler]

haha, thats what i was thinking! two minutes...  :laugh:

[dogzilla]

What firmware version are you running?

[Jameskibler]

1) just rx and comp


2) servos and ubec


3) everything including Vtx on


4) same as '3' but without Vtx

[Jameskibler]

the 1.43 uk firmware

[Flyn]

shit the bed dude thems aint good graphs! Under -80dbm you're not going to get too far especially on 100mw UK firmware. They have 1.45 out now with some good reports of being better than 1.43

The all powered noise floor on my EZUHF ZII is -103dbm

Have you tested it without the EZOSD current sensor?

[Jameskibler]

so just test it as a bare rc plane? no FPV gear powered?

[Flyn]

Yeah RX only powered, disconnect osd & current sensor from plane & leave all other fpv stuff off.

Plug in 3s lipo to current sensor & OSD & hold near RX & see.

This will tell you if the current sensor is faulty & kicking out uhf noise. Mine effected the RX from 3ft!!!

[Jameskibler]

1) baseline with just rx servos and ubec on:


2) ez osd and CS 5 inches away from rx:

[Flyn]

hmmm, does look a bit fishy bud. Mine kicked out a wide band uhf noise of about 12-15dbm across entire spectrum.

That could be your problem.

I loaded the 433mhz firmware on mine too to test - did it across that as well.

[Jameskibler]

http://i.imgur.com/xVyoSl.jpg

[Flyn]

LOL - think you just found a possible issue for your problems.

[Jameskibler]

When configuring the rx what does the frequency band need to be on?