Meter Dipole
is it possible to connect RC plane 2.4GHz transmitter with dipole omni-directional antenna?
I am using my 4 channel fatuba 2.4GHz transmitter and recevier for my RC plane. but the problem is it's less range about 500 meters. someone told me to connect dipole omni-directional antenna which will increase the controlling range upto 1.5 Km to 2 Km. so is it possible
Well, I suppose it is quite possible, so long as you keep the transmitter "looking" at the aircraft and have the dipole broadside to it. You may still have loss due to cross- polarisation of the antennas, if you have a "vertical" receive antenna. If the receive just uses a longish trailing wire like is used with lower frequency transmitters, this should be no problem.
For sizing, you need the wavelength, 300/Frequency in mHz.
300/2400 = .125 metres, 1/2 wavelength would be .0625 metres, so this is 62.5 mm tip to tip.
As you can see, the antenna is very small as a dipole!
This should be centre fed ... the fcentre feed impedance of a dipole is about 75 ohms, and probably the best way to feed it would be by a parallel feeder line of this impedance. Then I would wonder at the design impedance of the final amp. in the transmitter.?
This leaves me wondering whether you actually need to change anything, as 500 metres ground range translates to approx. 3 times that in the air! I would suspect that you would have trouble seeing an aircraft at 500 metres, let alone 1 1/2 kilometres.
I don't know what length your current transmit antenna is, if it were only 1/4 wavelength, it would only be around 31mm. long. If it is much longer than this, its radiation pattern is probably flattened, not truly omni. This would lessen the range above the transmitter some, if the antenna was kept vertical.
|
|
10-160 meter Steel Slinky HF Ham Radio Dipole Antenna $39.95 |
|
|
10-160 meter BRASS Slinky HF Ham Radio Dipole Antenna $89.95 |
|
|
10-160 meter BRASS Slinky HF Ham Radio Dipole Antenna $89.95 |
|
|
HAM - DIPOLE - ANTENNA - 15 Meters - NEW!! $22.50 |
|
|
10-160 meter BRASS Slinky HF Ham Radio Dipole Antenna $89.95 |
|
|
MFJ-1774 40-METER DIPOLE ANTENNA (NEW) $40.00 |
|
|
MFJ 17758 - Dipole 80/40 Meters - New $89.00 |
|
|
10-160 meter BRASS Slinky HF Ham Radio Dipole Antenna $89.95 |
|
|
Dipole Antenna For 20,17,15,12,11,10, 6 meter $39.99 |
|
|
CCD Dipole antenna 20 and 40 meter 114 Feet Long $14.00 |
|
|
10-160 meter BRASS Slinky HF Ham Radio Dipole Antenna $89.95 |
|
|
JETSTREAM DIPOLE KIT FOR 10,12,15, OR 17 METERS $39.95 |
|
|
10-160 meter BRASS Slinky HF Ham Radio Dipole Antenna $89.95 |
|
|
MFJ-1776 - 6 METER FOLDED DIPOLE-NEW MERCHANDISE $9.99 |
|
|
MFJ-1773 - 30 METER DIPOLE-NEW MERCHANDISE $8.99 |
|
|
10-160 meter BRASS Slinky HF Ham Radio Dipole Antenna $89.95 |
|
|
10-160 meter BRASS Slinky HF Ham Radio Dipole Antenna $89.95 |
|
|
10-160 meter BRASS Slinky HF Ham Radio Dipole Antenna $89.95 |
|
|
10 -11 METER DIPOLE HAM - CB - DIPOLE - ANTENNA $24.95 |
|
|
HAM - DIPOLE - ANTENNA - 12 Meters - NEW!! $25.60 |
|
|
HAM - DIPOLE - ANTENNA - 160 Meters - NEW!! $59.95 |
|
|
HAM - DIPOLE - ANTENNA - 60 Meters - NEW!! $34.95 |
|
|
HAM - DIPOLE - ANTENNA - 75/80 Meters - NEW!! $35.95 |
|
|
10-160 meter BRASS Slinky HF Ham Radio Dipole Antenna $89.95 |
|
|
HAM - DIPOLE - ANTENNA - 15 Meters - NEW!! $22.50 |
|
|
10-160 meter BRASS Slinky HF Ham Radio Dipole Antenna $89.95 |
|
|
20 Meter Ham Radio Dipole HF Antenna-FREE SHIPPING !!! $27.95 |
|
|
20 Meter Ham Radio Dipole Antenna W Balun - FREE SHIP $44.95 |
|
|
10-160 meter BRASS Slinky HF Ham Radio Dipole Antenna $89.95 |
|
|
10 Meter Ham HF Antenna/Dipole-Inverted V - 2KW PEP $18.99 |
|
|
15 Meter Ham HF Antenna/Dipole-Inverted V - 2KW PEP $14.99 |
|
|
11 Meter CB - HF Antenna/Dipole-Inverted V- 2KW PEP $18.99 |
|
|
10-160 meter BRASS Slinky HF Ham Radio Dipole Antenna $89.95 |
|
|
HAM - DIPOLE - ANTENNA - 20 Meters - NEW!! $25.65 |
|
|
10 Meter Ham HF Antenna/Dipole-Free Shipping!!! 2KW PEP $23.95 |
|
|
2 Meter Dipole Antenna, Inverted V, for Ham, Amateur $12.99 |
|
|
6 Meter Dipole Antenna, Inverted V, for Ham, Amateur $12.99 |
|
|
10 Meter Dipole Antenna, Inverted V, for Ham, Amateur $18.99 |
|
|
11 Meter CB Dipole Antenna - Handles 2000 Watts PEP $18.99 |
|
|
20 Meter Ham Radio Dipole Antenna W Balun - FREE SHIP $44.95 |
|
|
Falcon 11 Meter Dipole Cb Base Station Antenna $24.99 Product Description This is an Indoor, Outdoor apartment, house, condo, attic or garage CB, Citizens Band Radio Transmitting antenna. It is made to be hung in the rafters or from the ceilings. Or outside on the roof, or between 2 trees or the side of a wall, or whatever you can imagine. It will handle up to 1500 watts PEP and comes pretuned. These can be mounted almost any where, and in any shape,... |
|
|
#1 Falcon 2 Meter Dipole Amateur Ham Radio Antenna $23.99 Falcon Radio Antenna 2 Meter This is an Indoor, Outdoor apartment, house, condo, attic or garage, 2 Meter 1/2 Wave Ham Radio Transmitting antenna. It is made to be hung in the rafters or from the ceilings. Or outside on the roof, or between 2 trees or the side of a wall, or whatever you can imagine. It will handle up to 1500 watts PEP and comes pretuned. These can be mounted almost any wher... |
|
|
#1 Falcon Off Center Fed 40-6 Meter Dipole Amateur Ham Radio Antenna $50.99 40 to 6 Meter Off Center Fed Windom Style Dipole Base Station Antenna With A 4:1 Balun. It Will Handle The Legal Limit, 1500 Watts Of Power. These Are A Very Efficient Multi Band Antenna. It Is Made To Be Mounted Any Way You Like Horizontal, Vertical, Slope, Inverted V, or L Shape. It has an SO239 Connection so a PL259 Connector Will Screw Right on to The Bottom of The Antenna. Aprox. 66 ft ... |
|
|
Five-meter-diameter conical furlable antenna (Jet Propulsion Laboratory) ... |