Topic: What colour pennant should be used for 2.4 G radios? (Read 10153 times)

Martin (Admin) · « **on:** April 15, 2008, 02:38:52 pm »

Via email to Mayhem...

Hi Martin,
Hope you are well, the website is looking great!

I am getting asked what colour pennant should be used for 2.4 G radios and if any information needs to be displayed. Any help or web pointers appreciated!
Best regards,

Kev

alan colson · « **Reply #1 on:** April 15, 2008, 03:04:24 pm »

We have a few members in the club running with 2.4G radios, they do not use a pennant, but that is not necessarily correct. Have not seen anything written down anyware, as a show organiser (Alfold) and frequency control officer (Merstham) it would be nice to have the correct information.
Alan

HS93 (RIP) · « **Reply #2 on:** April 15, 2008, 03:39:08 pm »

Putting a pennant or a bobble on the end of an antenna at 2,4 ghz may effect range I think it says in the instructions of one of thew makes available to even make shore it is upright and not to cover the TX antenna. so it would have to be hung from somewhere else.

HS93

Peterm · « **Reply #3 on:** April 15, 2008, 04:09:42 pm »

I could be wrong, but I thought the system hops around until it finds a channel free from transmissions. Come on you experts! Pete M

HS93 (RIP) · « **Reply #4 on:** April 15, 2008, 04:20:41 pm »

Peter m

yep they do, I think it was just to show they where on 2.4 mhz

DickyD · « **Reply #5 on:** April 15, 2008, 05:45:03 pm »

From the United Kingdom Radio Control Council Web site:

What does the modeller need to know about this new band? Well forget about crystals and frequency flags - although some aircraft clubs that use the 'peg on' system are putting a named peg on their board to indicate a model in use. For those who have that annoying twitch from electric motors and such, these sets can be the answer. They are also immune to ignition interference, microwave interference and are likely to be very resistant to any on board 'metal to metal' interference.

malcolmfrary · « **Reply #6 on:** April 15, 2008, 10:08:03 pm »

As a matter of form, some form of tag should be shown.
If a pegboard is in action, and someone is transmitting without a peg having seen someone else transmitting without one, they usually say "Well HE didn't have one".
Us ordinary mortals who use crystals need to refer to a pegboard and this can be explained to a newbie, but a set that doesn't need crystals should conform visibly to avoid unnecessary confusion and explanations.

rcfred · « **Reply #7 on:** April 16, 2008, 01:47:23 pm »

The UKRCC allocated a black flag for the 2.4GHz band transmitters, although the length of the aerial makes it fairly clear what band it is on. For the newbie seeing two transmitters with a black flag might suggest he can do the same on other bands. Like the rest of us all, it is a matter of the newcommer learning the system with a little help from his friends.

Fred

alan colson · « **Reply #8 on:** April 16, 2008, 03:19:20 pm »

rcfred
I think that may be a little confusing as there is a frequency on 27meg that if you check is either Black or Grey/Brown (26.975). I have seen both combinations of flag flown on aerials.
Alan

Arrow5 · « **Reply #9 on:** April 16, 2008, 05:24:07 pm »

Purple with yellow "2.4" wouldnt clash with anything else

DickyD · « **Reply #10 on:** April 16, 2008, 05:38:21 pm »

Only your eyes.

Arrow5 · « **Reply #11 on:** April 16, 2008, 07:54:27 pm »

Ah , you`ve seen me after an evening of malt testing

DickyD · « **Reply #12 on:** April 16, 2008, 09:20:02 pm »

As the aerial on these new sets are only about 12" long will it not be pretty obvious that they are on 2.4 without any pennant ?

meridian · « **Reply #13 on:** April 16, 2008, 09:33:12 pm »

I've just bought a Futaba 6EX-2.4GHz system and the transmitter antenna is only four inches long so that is pretty obvious!

subjockey · « **Reply #14 on:** April 16, 2008, 09:53:34 pm »

IT IS COMMON COURTESY TO PLACE A PEG MARKED WITH SKIPPERS NAME AND 2.4, ON FREQUENCY BOARD

DickyD · « **Reply #15 on:** April 16, 2008, 09:58:35 pm »

Quote from: subjockey on April 16, 2008, 09:53:34 pm

IT IS COMMON COURTESY TO PLACE A PEG MARKED WITH SKIPPERS NAME AND 2.4, ON FREQUENCY BOARD

Oy!!! who you shouting at !!

alan colson · « **Reply #16 on:** April 16, 2008, 10:25:37 pm »

There is poor subjockey posting his first thread on Mayhem and DickyD shooting him down in flames. It was only a few months ago when I sent an email in CAPITALS that I learned that this was shouting on the internet.
Welcome to Mayhem subjockey, just keep the noise down or you'll get it in the neck

Alan

DickyD · « **Reply #17 on:** April 16, 2008, 10:27:29 pm »

Light hearted joshing, shooting down in flames not allowed Alan.

Welcome subjockey.

smbc · « **Reply #18 on:** April 16, 2008, 11:29:51 pm »

I agree with Malcolm, even though the aerial length is small at 2.4 gig , some form of pennant should be attached to the handset, black has been quoted for a particular for 27 meg frequency so maybe black with 2.4 in white would be a reasonable suggestion?

The aerial length may be obvious to the seasoned modeller but meaningless to the newcomer!
so some pennant is better than no pennant.
Regards, Kev

surabaya · « **Reply #19 on:** April 17, 2008, 12:04:31 am »

Surely on a short antenna a pennant would not really be visable.

Maybe a hat with a flag or a number on your back ( like come dancing)

I think most people who start up will know as much about pennants as they do about 2.4 sets.Not a lot. But they will learn just the same, at least it won`t matter so much with a 2.4 rig when they don`t know

Arrow5 · « **Reply #20 on:** April 17, 2008, 10:00:48 am »

Any guidance on the aircraft sites ?

grasshopper · « **Reply #21 on:** April 18, 2008, 07:57:31 pm »

I wouldn't of thought any pennant was required - the aerial is so short it would not be readily visible, looking more like a luggage tag!
The whole point of 2.4Ghz is that your Tx and Rx bind to each other and therefore exclude all others. Anyone else switching on whilst your system is in use won't affect you at all, and vice versa. The principle behind the 2.4GHz band means if all possible channels are in use (80+?) then the last one on will not operate until a channel is free.

Out of courtesy one could put their name on a pegboard - but clashes should be a thing of the past. I know at the RC car club we have no problems at all with 2.4, it's only the few left on 40MHz and 27MHz that have any problems.

gadget555 · « **Reply #22 on:** April 19, 2008, 09:32:11 pm »

hi to all at mbm i race large scale car's, we also use a peg board but we don't have penant's hanging from are Aeriel's,it would give the driver next to you a clue when you are trying to poke him in the eye so i can get past him

. As for 2.4's it's quiet obvious as you don't have 3" of Aeriel sticking out in front of your hand set.
regards Keith

dougal99 · « **Reply #23 on:** April 22, 2008, 04:33:46 pm »

Quote from: grasshopper on April 18, 2008, 07:57:31 pm

The principle behind the 2.4GHz band means if all possible channels are in use (80+?) then the last one on will not operate until a channel is free.

As a point on information/interest the Futaba system works on spread spectrum technology which essentially means that the transmitter moves up and down the frequency band not staying on anyone frequency for more than 2 milliseconds. The receiver obviously has to follow the transmitter. Consequently, there is theoretically no limit to the number of systems that can operate at the same time.

Cheers

Doug

GaryM · « **Reply #24 on:** April 30, 2008, 12:44:34 am »

I read it was 134 million, may have got it mixed up with the No of peeps going to Wicksteed tough

regards
Gary

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Author Topic: What colour pennant should be used for 2.4 G radios? (Read 10153 times)

rcfred

meridian

subjockey

smbc

surabaya

gadget555

GaryM