Review: Hitec Spectra AFHSS 2.4GHz receiver and Optima 7 module (part 2)

Part 2: a look at the "scan mode" of the Hitec AFHSS system in operation and how it might be useful for those who enjoy flying FPV models.

Category:

Sports

Tags:

• hitec
• spread
• spectrum
• rc
• plane
• radio
• control
• frequency
• hopping
• FPV
• wireless
• video

[gsm1021]

Hi, I had my plane crash due to RF from the electronic ignition noise. I was using the Aurora9 radio system with a BME 50cc engine can you do some testing and see if you can duplicate the failure.

[RCModelReviews]

@gsm1021 It's worth noting that *all* 2.4GHz radios are affected to some degree by ignition noise. I helped diagnose another flier's problems a few weeks ago -- the left aileron on his gaser would sometimes go into the full-up position by itself, but only when the engine was running. He'd flown several flights before that day with no issue. When we looked, he'd recently moved the receiver batteries closer to the engine -- and RFI was getting into the battery lead. Not a Hitec radio either.

[RCModelReviews]

@gsm1021 The *golden* rule with all RC gear in gasers is to keep every bit of RC wiring well away from the ignition system. If you have a servo, battery or wire within 6 inches of any of the ignition wiring or the engine then you are significantly increasing the risk of problems. I see people who fit their throttle servo to the firewall and use a 3" metal pushrod and I shudder. I see people who use a servo to operate a switch in the ignition wiring to act as a kill-switch and I shudder.

[HeliEye]

Good review, glad to see the Frsky comparison, I have the Frsky DF combo with telemetry.

I like the spectrum analyser, what system is that? expensive?? I would like to get a spectrum analyser that covers 5.8GHz ideally, as I use that band for FPV.

Steve

[gsm1021]

Hi thank you for the great reviews you are doing. I try to watch them as much as possible to see what is new.

[TheFlyinfreak]

Thanks for your awesome review, it has helped me heaps with the choice of my new receiver. Cheers

[Kjetilaf]

i dont understand the point in make so many videos about this, and i dont understand what you are saying.

but i can english ^.-

[jbx907]

that good but it will still defen the front end of the rx on the model!

[jcer93705]

Hi can you tell us what software and hardware you use to take measurement of 2.4ghz?

[lunarhemal]

Hello Sir,

that was a lovely review in 3 parts. Any videos showing a lock out due to intereference ??

Thanks for your efforts.

Hemal