RE: antenna question?  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       

All Forums >> RC Airplanes >> Tips & Techniques >> RE: antenna question?
Page: <<   < prev  1 [2]

Login
Message << Older Topic   Newer Topic >>
RE: antenna question? - 9/12/2003 12:15:51 PM   
Hisham



Posts: 870
Joined: 2/13/2002
From: Beirut, LEBANON
Status: offline 		.

(in reply to flyfree69)
       Post #: 26

RE: antenna question? - 9/12/2003 10:12:56 PM   
nashtm



Posts: 290
Joined: 11/13/2002
From: Port Elizabeth, SOUTH AFRICA
Status: offline 		Hey Crash_N_Burn

Does that mean I dont have strip the last bit of may antenna to bare the wire ?????


Tim

(in reply to flyfree69)
       Post #: 27

RE: antenna question? - 9/12/2003 11:17:41 PM   
Crash_N_Burn



Posts: 535
Joined: 3/29/2002
From: d, AL,
Status: offline
quote:

Does that mean I dont have strip the last bit of may antenna to bare the wire ?????



Whoa....What is this? Stripping insulation? Why?

Is this another rumor???

Fill me in, please.


_____________________________

-dave-

(in reply to nashtm)
       Post #: 28

RE: antenna question? - 9/13/2003 7:44:52 AM   
nashtm



Posts: 290
Joined: 11/13/2002
From: Port Elizabeth, SOUTH AFRICA
Status: offline 		I have come across some people (non tech types) believe that the last 1/2 inch or so of the antenna should have the insulation stripped off for best reception !!!!!!!!!!

Anyway back to trimming my antenna.

Tim

(in reply to flyfree69)
       Post #: 29

RE: antenna question? - 9/13/2003 1:46:24 PM   
russellk


 

Posts: 77
Joined: 7/15/2003
From: Canberra, AUSTRALIA
Status: offline 		Cool. I've been tired of the myriad of urban myths at my field - for example "you shouldn't have a mobile phone near a computer transmitter because it could wipe the memories"

For revenge, I've been looking for an urban myth of my own to start spreading - the last 1/2" idea is a great one.

Needless to say, there is no truth to that particular theory.

(in reply to nashtm)
       Post #: 30

RE: antenna question? - 9/14/2003 1:54:11 AM   
Crash_N_Burn



Posts: 535
Joined: 3/29/2002
From: d, AL,
Status: offline 		You guys crack me up! Cut the last half-inch of insulation off the antenna for better reception! LOL

You know, to add a little Credibility, try fanning-out the strands of that last 1/2". Tell them it's a capacity hat for MUCH better range! LOL

You know these myths catch on. Like the knot thing, the fellow earlier said he had heard it, and read it, in the '60's! Somebody probably lost range and their plane and when they found the remains there was a knot in the antenna.

....And the story begins....


_____________________________

-dave-

(in reply to russellk)
       Post #: 31

RE: antenna question? - 9/14/2003 3:25:46 AM   
JPMacG


 

Posts: 1183
Joined: 1/2/2002
From: Ivyland, PA, USA
Status: offline 		I had a guy tell me that I should paint my ham radio antenna black to make it radiate better. He had the right idea, only he was off by 5 or 10 orders of magnitude in frequency.

(in reply to Crash_N_Burn)
       Post #: 32

RE: antenna question? - 9/14/2003 4:11:26 AM   
flianbrian



Posts: 329
Joined: 3/21/2002
From: Suthrun, IL, USA
Status: offline 		If you run the antenna through a pushrod tube inside the fuse, use the clear type so the radio waves can see the antenna better. It's TRUE, I SWEAR it!!!

(in reply to Crash_N_Burn)
       Post #: 33

RE: antenna question? - 9/15/2003 6:09:07 AM   
Barland


 

Posts: 128
Joined: 12/21/2002
From: Coon Rapids, MN, USA
Status: offline 		Crash_N-Burn,
To an earlier question of mine about looping and coiling you mentioned that the range might suffer, but only a small amount. You mentioned it might change from .5 (point 5) to .4 (point 4) miles. Is that all the range our controllers have? What is the practical range for a controller and receiver to safely operate? PS... love the humor showing up here.

(in reply to Crash_N_Burn)
       Post #: 34

RE: antenna question? - 9/15/2003 4:54:59 PM   
Crash_N_Burn



Posts: 535
Joined: 3/29/2002
From: d, AL,
Status: offline 		Theoretically stated, it’s line of sight. If you can see, you can control it. My guess for practical outer limits of having control would be perhaps one 1 to 1-1/2 mile maximum with the plane flying away from you. If it were flying straight up above, you could probably double the range. I used the .4 and .5 miles as an example.

I think we generally fly within ¼ mile (or less) of our control position and the receiver is in complete saturation (lotsa signal) almost all the time.

We do meteor-burst antenna tests at a slightly lower frequency but with ½ watt at ½ mile and the receiver is solid as a rock, so I cannot see why .75 watt at 72MHz would be any different, even with a unity gain (zero gain) receive and transmit antenna.

Perhaps if they used clear insulation on the receive antennas instead of black the range would increase, yes? LOL


_____________________________

-dave-

(in reply to Barland)
       Post #: 35

Page:   <<   < prev  1 [2]
All Forums >> RC Airplanes >> Tips & Techniques >> RE: antenna question?
Page: <<   < prev  1 [2]





Jump to:


Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Member Video Posts | RCU Video Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

© 2001 - 2007 24-7 RC, LLC, all rights reserved.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America

Kaango.com Classifieds

0.672RCU2