RSS Facebook

RCMF

Welcome, Guest. Please login or register.
September 25, 2017, 10:57:42 AM

Login with username, password and session length

Articles

Recent Posts

Pages: [1] 2 3 4 5 6 ... 10
1
Radio Gear / Re: 2.4GHz being affected - several makes.
« Last post by pooh on Today at 10:14:17 »
There are two ways interference can operate - the first is by simply competing with the wanted signal, by being on the same  frequency and masking the information in the wanted signal. Spread-spectrum systems are designed to prevent this happening by rapidly changing the operating frequency, so that any specific channel will only be interfered with for a very short time.

The second form of interference is caused by the overloading of the receiver, to the point that the semiconductors in the receiver are permanently switched "on", so no useful signals are detected. Any electronic equipment can be interfered with in this way (try holding your mobile phone near a stereo amplifier or PA system)

I would guess that it is the second type of interference, as several different makes/models were affected.

However, you need a lot of radio energy to cause this sort of problem. Microwave communications equipment could provide this sort of energy - I recall experiencing interference problems at one flying site which was almost certainly due to a narrow beam coming from a microwave dish, the interference only happened in line with the beam direction and height.

But whatever the source, it needs investigating.
2
Jet Turbines / Re: Wot 4 turbo prop
« Last post by JimG on Today at 10:12:07 »
Hi Barrie
a bit more size information.
Tailplane span is about 30 in or 76cm.
Fin Height  is 20 in or 50.5cm from fin tip to bottom of tailwheel.
Fuselage height at the main wheels is 17in or 43.5cm.

Jim
3
Radio Gear / Re: 2.4GHz being affected - several makes.
« Last post by itsme on Today at 08:59:23 »
Any factories opened nearby? Some machinery can cause problems on 35, not heard of it on 2.4 though.
4
Thanks guys..Can't take things further at the moment - suddenly found myself in hospital for a while, but hopefully normal service will be resumed soon
Mike
Sorry to hear that Mike. Get well soon!
5
Thanks guys..Can't take things further at the moment - suddenly found myself in hospital for a while, but hopefully normal service will be resumed soon
Mike
6
Radio Gear / Re: 2.4GHz being affected - several makes.
« Last post by firefox on Yesterday at 23:16:00 »
Hi

You need to report this to the BMFA with as much detail as you can.

.
7
Radio Gear / 2.4GHz being affected - several makes.
« Last post by Bad Raven on Yesterday at 21:30:15 »
Today Sun 24/9/17 our club field seemed to be being swamped by some sort of interference never experienced by us before.

This affected people who are thoroughly competent builders/radio installers/pilots.

Affected planes (only fixed wing was bring used at the time) covered several differing makes of 2.4GHz frequency hopping radio.

Lets not have the "little kiddies" trolling posts about Spektrum here please, this was serious and significant interference inc makes with the best reputation in the industry.

Not heard any other experiences like this with 2.4GHz, but any RELIABLE info appreciated.
8
RC Model Flying Events / ASHBOURNE SCALE DAY 2017
« Last post by Propsize on Yesterday at 21:14:50 »
Hi Chris,

Can you put Ryan Oakley and myself down for your spiffing fly-in please!

Thanks,

Dave Oakley


Sent from my iPhone using Tapatalk
9
RC Model Flying Events / Re: ASHBOURNE SCALE DAY 2017
« Last post by Sparkyrobbo on Yesterday at 20:58:58 »
Hi Chris I put my name down but you haven't added me to the list 😔
Mark (sparky)
10
Jet Turbines / Re: Wot 4 turbo prop
« Last post by JimG on Yesterday at 19:46:40 »
Hi Barrie,
still flying well, it was flown this afternoon down at the club field. Not flown enough yet to be fully wrung out but I am at ease with flying it. There is a short video on the Dundee clubs facebook page https://www.facebook.com/dundeemodelaircraftclub/videos/vb.1567111516914087/1786837868274783/?type=2&theater although it only shows the takeoff not the rest of the flight.
The length is 185cm or about 72 3/4 in. I don't know how well it fits in cars as mine travels on top af a small trailer towed by a motorbike.

Jim
Pages: [1] 2 3 4 5 6 ... 10
BloQcs design by Bloc
SMF 2.0.2 | SMF © 2011, Simple Machines
SMFAds for Free Forums
TinyPortal © 2005-2012
Page created in 0.14 seconds with 19 queries.