However, that issue is moot if you use the Fan on your ground station receiver. In the event of a roll over into the ground, I'm afraid it wouldn't have much of a chance for survival. The Fan uses very precise solder joints and thin wire. True, most omni-directional antennas are also delicate, but some use thicker wires on the lobes and large globs of hot glue to keep everything together. The only downside I can think of for the fan is that it's delicate.
While flying around the local construction site, I was able to go between heavy earth moving equipment and behind dirt hills with very little multipath interference showing up. The Fan has proven to be a great transmitter antenna on my FLIP quad. I used a 90-degree connector in lieu of bending it. The Fan comes in 6, 8, 10, and 12-inch lengths, and the white plastic tube between the SMA connector and antenna is rigid but easily bendable with a little heat.
#Fpv antennas install#
I decided to install the Fan on a Hoverthings FLIP fpv quadcopter, since I will be flying generally closer to my ground station than typical fixed wing platforms, and I'll be using the Horizon antenna on the receiver. However, this assumes you are flying a standard outbound and return leg if you are exploring your airspace at average distances from your receiver antenna or flying a multicopter, the fan can be used as a transmitter antenna quite effectively. If you're flying a three lobe Windmill (available here) on your aircraft, pointing a lobe forward will yeild the best signal on the return flight. Additionally, the inherent drag of the five lobe Fan makes it more suitable on the ground. This is due to the increased multipath rejection associated with the antenna with the higher number of lobes, and the higher gain on the antenna with the lower number of lobes. The general rule of thumb is to place the antenna with the most lobes on the receiver. It's designed as a ground-based receiver antenna, but it's equally at home on a transmitter. The Fan is a circular-polarized omni antenna with five lobes. Now, let's take a closer look at these antennas. The frequency of choice in this review is 1.2GHz. The Fan design was developed by Hugo at TrueRC, while the crosshair was a joint development between IBCrazy and Hugo. The third antenna we will test is a long range cp directional called a crosshair. The second antenna, designed for long range multicopter and ground applications, is a combination of two fans called the Horizon. The Fan is designed for general flying at close to medium distances. The first antenna is a circularly polarized omni called the Fan.
In this review we'll explore a few different cp antennas from Hugo at. CP antennas shrug off the multi-pathing issues that have plagued lp antennas, and allow for a bit of leeway with regards to flight location and antenna placement. But, as most fpv pilots have experienced first hand, lp antennas are susceptable to multi-pathing as the incoming signal reflects off objects and hits the antenna from multiple angles, causing video distortion and at worst, cancelling out the signal entirely.īut in recent years, a small group of dedicated hobbyists began experimenting with existing circular polarization technology (cp) and applying it to fpv platforms. With proper setup and adherance to the laws that governed their performance, you could get exceptional distance from linearly polarized antennas. Up until a few years ago, linearly polarized (lp) antennas were the only choice available commercially. PolarizationĪlways make sure you buy antennas with the same polarization of your goggles (RHCP or LHCP).ĭJI Goggles and the Caddx Vista VTX come with LHCP as standard (the “L” stands for Left).Īnalog antennas are more likely to come with RHCP (Right) polarisation.Using the right antennas for your style of flying is an important (and often overlooked) aspect of setting up a great performing fpv system. FPV antennas don’t actually strengthen the output power measured in mW (milliwatts).įPV antennas allow you to fly further than you otherwise would within your given limits. FPV Antenna CompromisesįPV antennas only funnel or direct the video signal direction. SMA-type connectors are more sturdy, cheaper and withstand crashes. Some of the most common antenna connectors are SMA, RP-SMA and U.FL. What to keep in mind before buying FPV Antennas Different Antenna ConnectorsĪntennas use different connectors. 5.2.5 Can I use an analog FPV antenna with the DJI Air Unit or Caddx Vista? Best FPV Drone Antennas (Analog and Digital) Requirementīest FPV Analog Goggle Antennas (Omnidirectional) Requirementīest DJI FPV Drone Antennas (Directional) Requirementīest Analog FPV Goggle Antennas (Directional) Requirement
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