Mobula 7 1s range issues

[gaunt fiber]

When I get around 20-30m away or have a few walls between me (flying around the outside of the house) my mob 7 will loose all RX. The video stays but no control and will just drop out the air. Any ideas? I have the ELRS 1s version and a RadioMaster zorro. It’s not my radio as I fly a 3” just fine with it so I think the mob 7 is the issue.

I’ve seen Nathan loops take his miles away and be just fine so that’s why idk what’s up.

I’m thinking maybe something needs updating or smth but I have no idea

[rocky nimbus]

Increase OUTPUT POWER

[gaunt fiber]

How would I do that?

[rocky nimbus]

The elrs lua

If you haven't changed it, it probably set to 25mw

[gaunt fiber]

Oh right ok, is that the thing u do over WiFi

[rocky nimbus]

No

Look it up im at work atm

[gaunt fiber]

How?

Oh I remember

[rocky nimbus]

100mw is the legal limit outside the US

[gaunt fiber]

Yea I’ll bump it up to that

Just plug drone in and launch the ELRS app thingy

[gaunt fiber]

Wait the output of my radio?

[rocky nimbus]

Ye

[gaunt fiber]

My radio is fine, I can fly my 3” as far as I can before the video breaks up. My mob 7 will just drop at 20m

I’m pretty sure it’s on 100

[rocky nimbus]

Check your antenna is still there. Looks something like this

[gaunt fiber]

Yea I’m thinking that could be the issue lol I can’t remember if I’ve seen it recently 😂

I’ll have a look when I get home. Can I get a replacement if it’s gone?

[rocky nimbus]

Well... Yeah, but actually replacing it is a different story

[gaunt fiber]

Or can I just put a new receiver in it

I think the board has a UART spare

[gaunt fiber]

I read something about soldering on a piece of copper wire

[gaunt fiber]

Yea it’s gone

There’s a little UART there I could use

Welp now I know, seems easy ish to fix

[daring tusk]

Just solder a piece of maggnet wire the correct length to the signal pad where the tower antenna was

Dont add another receiver

[gaunt fiber]

Magnet wire?

And which pad there’s 4?

Oh is it the slightly blue one

[daring tusk]

I cant tell from the 1 mp blurry photo, its the one with a trace going to it

[daring tusk]

Google it

[gaunt fiber]

Sorry what’s a trace?

[daring tusk]

The little things on the pcb that carry signal and power like a wire would

[gaunt fiber]

Oh right ok

[gaunt fiber]

Is that ok? It’s copper wire out of a copper wire

[daring tusk]

Enamel wire, aka magnet wire, is enameled. Meaning it has a thin coating to prevent shorts

[gaunt fiber]

Awww

Thought I was onto something 😂

[daring tusk]

Ive used normal 32 gauge wire before in a pinch

Just look up the oscar liang diy antenna article

[daring tusk]

Its good to have on hand for shit like this, especially if you fly whoops a lot

If you live near a hardware store and need it fast they probably have it

[gaunt fiber]

Eh it is what it is. It flys just fine without it the range is just shitty

[gaunt fiber]

I have some of these are they usable

I have 2 that I’d never use sooo

[daring tusk]

Kinda, they are great to diy a vtx antenna for a ufl rx, kinda a pita to do on that pad from the tower

[gaunt fiber]

So could I makeshift an ELRS antenna outta it somehow

[daring tusk]

The exposed element at the top is probably long enough to cut into a diy monopole actually

[gaunt fiber]

Sick

[daring tusk]

Just look up the length first, and leave a little extra to go into the solder

[gaunt fiber]

It’s like 32mm

[daring tusk]

Sounds right to me

[gaunt fiber]

This is 31

[gaunt fiber]

Will 31 still work

Well better than none

[daring tusk]

That black wire is shielding, then a layer of grounding wire, then that white wire underneath

You definitely have enough length in that antenna to do it right

[gaunt fiber]

The long black wire?

[daring tusk]

Yeah

The wite part goes all the way through it

[gaunt fiber]

Yea

So measure 32 and have one end exposed to solder

[daring tusk]

Under that silver stranded wire should be the white wire

[gaunt fiber]

Yup there is

[daring tusk]

Yeah, first extract that white wire from the rest

[daring tusk]

Now expose a little bit of the wire inside that, pre tin it, then measure the 32.whatever of shielding after that and you have your diy monopole

[gaunt fiber]

Is it ok there are strands?

[daring tusk]

Yeah

[gaunt fiber]

How do I expose this lol

Their tiny af

[daring tusk]

You didnt remove the clear shielding right?

[gaunt fiber]

Maybe I did lol

[daring tusk]

The wire makeup is signal wires, clear shielding, grounding wires, black shielding

[gaunt fiber]

I’ve got loads nw

[daring tusk]

You should have only removed the grounding layer and black layer

[gaunt fiber]

So I’ve got a plastic wrapped stranded wire basically

[daring tusk]

Yeah

[daring tusk]

Now treat it like any other wire and solder it up

Looks good

[gaunt fiber]

Lovely

Hang on a sec, can you tell me which pad it is if I send a better picture?

[gaunt fiber]

Which pad

@daring tusk

Well I think it’s them

[gaunt fiber]

Done it I’ll test it next week thx for the help

[daring tusk]

I cant tell from the photo

Not enough detail

[gaunt fiber]

sorted it now cheers

[gaunt fiber]

I take it i don’t need to ground the antenna? I cut it so the solder point is as small as possible and there’s not exposed wire at the top. And I poked it through the canopy so it doesn’t hang around on the board

[daring tusk]

Yeah, the ground is for the shielding that we removed

[gaunt fiber]

So I’m fine as is?

[daring tusk]

Yes