EZUHF Epic Fail - Crash

[Coyote]

No idea if you can flash the Dx8, to be honest I never deal with them. Only the dx6i once. Once I tried a Futaba I stuck with them til my Turnigy 9x.

I see on the Lab one has recommended the Diamond antenna, that I can highly recommend.

[simondale]

The Diamonds are excellent by all accounts.  They are 433MHz but people on the forums (people much more clever than I) now seem to be taking the view that 433MHz and 459MHz are close enough as to make no difference.

We've got them in if you need one anyhow: http://www.firstpersonview.co.uk/antennas/433mhz/diamond-srh771-sma-433mhz-antenna

[Coyote]

I got an 8km range test on 459Mhz with 100mw on a Diamond, so it definitely works :)

[Flyn]

Hi guys, thanks for the help. I've just bought a futaba 9c that should be here Monday from the BMFA classifieds.

Simon thanks for the link, but you already sent me a diamond earlier this week, just waiting for my 9c.

I may still try to modify the dx8 plug to see if it helps as it is the 3.5mm plug that causes issues - maybe ppm signal too but I'll start at the trainer plug & go from there.

I'm also going to try to hook the ezuhf up to the 9c's module port so I can have the trainer plug free.

[Flyn]

Update,

Well ditched the idea of using/mod'ing the dx8 just modded the futaba's rf module to take UHF - worked a treat. I'm still yet to fly again on the UHF with the 9c & diamond antenna, but ground tests look promising.

I've also had to rebuild the plane the radio failure caused to crash, gotta love foamies, hot glue & tape!! It's gonna fly like a powered brick but it should fly well enough to test the ezuhf at range before it put it in my ZII.

Hopefully I'll be able to get some range on it with the diamond without any failsafes. I'm going to bring it to the Bardney meet this weekend so any & all help would be very much appreciated.

[Flyn]

Ok, I flew the ezuhf again this weekend with the diamond antenna but could only get about 1/4 max on low power while holding antenna vertical before I got glitches & failsafes. Whilst range has increase slightly it's still pants.

I really am starting to think that this thing isnt up to spec & there's something very wrong with it as I'm getting better range from my Spektrum DX8 & any & all confidence in the ezuhf is long gone. I doubt very much I'll ever put it to its indented use on my Zeph!

Shame. I'm very disappointed as the immersion video gear I've bought is great!

Simon - can you help out here please, thanks.

[simondale]

Hi Flyn,

I replied to your ticket yesterday afternoon.  Send it in and we'll test the output power.

All the best

Simon

[Flyn]

Hi Simon,

Just checked, yep so you did, for some reason my yahoo mail didn't send it down to me.

Thank you for your help on this, I'm guessing you just need the TX box & that's it. I'll send it you back as soon as I have a chance in the next day or so.

[Flyn]

Ok ezuhf sent back recorded & insured.

[Flyn]

Finally got to fly my newly replaced (thanks Simon!!!!) ezuhf TX today, I took it out LOS for the first few flights just to see how it would fair, it flew pretty well I must say, it equalled if not bettered the previous ones max distance with ease.

I did have a couple of glitches but I think that was down to me pointing the antenna at the plane (flying though the null) while flying as I'm used to a 2.4 antenna being angled at 90°.

I think I need an angled adaptor from the ezuhf to the antenna so it angles the antenna up toward the front of the TX. Either that or I need a hinged mount to let the ezuhf swing down so the antenna points up when flying with the Futaba TX near horizontal.

Can anyone help with this please? I would prefer the an angled adaptor I must say. Would this be ok on the ezuhf, & does anyone have one going spare?

[Zeeflyboy]

You can buy a 90 degree (also called right angle in some descriptions) SMA for a few quid on eBay.

Signal loss for adding the connector is utterly negligible.

[Coyote]

I use one on mine, but to be honest, I did technically buy it but didnt........

You can also get one, just as long as you buy the $90 Circular-Wireless helical that it comes with :)

[friesianflyer]

I have attached my ezuhf module to the back of my Tx stand. This protects the module when you put the Tx down, but more importantly, it puts the 433 antenna nearly vertical if you hold the Tx as normal....

Or horizontal if you can't attach a photo properly!