FXT 5.8 GHz FPV Transmitter 25/200/400mW Switchable Video with Smart OSD (FX878T Black Knight) – Is this the right VTX for you?

Conclusion: all in all, this ‘should’ be extremely reputable and i appreciated the type factor and 400mw energy output level. Fxt is 1 of several companies out there that i’ve not had any catastrophic failures with. This is very crucial to note for a vtx of course. Since 20×20 4in1’s aren’t very up to par nonetheless, a vtx that mounts on a 30×30 system will make additional sense for the way i build points. Fxt has long gone above and outside of and created an osd on the vtx alone. You can plug a regulate board directly into the vtx and go to city with all the configurations correct in front of your facial area. I typically you should not improve my vtx configurations a great deal but if i did, i might possibly want smart audio but this is a seriously positive fire way to go about issues as effectively.

Instructions delivered are crystal clear and correct, osd interface is straightforward sufficient to use. I like the two mounting holes on the aspect so it’s easy to include to a stack.

A bit of a perplexed style and design as this vtx is mostly a mounted wing intended offering. It features a thirty by thirty set of mounting holes additional for a stack on a multi rotor. If your bay inside your plane has this mount selection then it will function beautifully. The set up osd is a bit wonky to access with the integrated joystick in tight builds but will operate high-quality if you system your access stage. Fantastic for a mounted wing pilot not needing a flight controller but redundant if you do. Selection and clarity are a substantial uptick for this unit. Invest in a well designed mmcx antenna right and crank it to 400mw. Paired with a good receiver it will go quite a length, farther that you want to crash anyway. I constantly electrical power my vtx independent on a wing make so ise a excellent clean up 5 volt bec.

What i appreciated:- the osd, displaying battery voltage, channel, energy output, and on time- it fits on a 30×30 stack- has an mmcx connector- the pigtail it comes with is not too long- the vtx can be powered on but shut off the video transmitting- has a pit modewhat i dislike:- the sizing, it is a little even bigger than most vtx’s- you are not able to regulate the electricity output or the channel by smart audio or tramp telemetry- you have to use a command board/buttons to regulate the electrical power output and channeli have not completed a flight check with it still, soon to appear.

This video transmitter is compact and quick to mount on the stack inside my drone. The solder joints are great top quality and it’s uncomplicated to swap involving bands and channels with smartaudio. Smartaudio is a will have to-have since configurations can be improved with out using off your goggles. The max 400mw ability that it emits is plenty of to penetrate via some trees at my neighborhood park.

Wow let me commence by expressing that the vtx is a amazing transmitter and consumer company was good.

  • FXT makes good equipment
  • Is this the right VTX for you?
  • Great full feature video transmitter in a small package.

This is a good vtx, modest and light-weight. It has two mounting holes so it can be mounted on best of a stack or zip tied to the frame. I use warmth sinks on my vtx’s and this one particular is best for that. Full attributes in small deal, has smart audio and switchable ability. This might be my new favored vtx.

Very best rate all over and operates terrific.

Summary
Review Date
Reviewed Item
FXT 5.8 GHz FPV Transmitter 25/200/400mW Switchable Video with Smart OSD (FX878T Black Knight)
Rating
4.2 of 5 stars, based on 10 reviews

1 Comment

  1. This video transmitter is compact and easy to mount on the stack inside my drone. The solder joints are good quality and it’s simple to switch between bands and channels with smartaudio. Smartaudio is a must-have because settings can be changed without taking off your goggles. The max 400mw power that it emits is enough to penetrate through some trees at my local park.
    1. This video transmitter is compact and easy to mount on the stack inside my drone. The solder joints are good quality and it’s simple to switch between bands and channels with smartaudio. Smartaudio is a must-have because settings can be changed without taking off your goggles. The max 400mw power that it emits is enough to penetrate through some trees at my local park.
  2. A bit of a confused design as this vtx is mainly a fixed wing intended offering. It offers a 30 by 30 set of mounting holes more for a stack on a multi rotor. If your bay inside your plane has this mount option then it will work perfectly. The installed osd is a bit wonky to access with the included joystick in tight builds but will work fine if you plan your access point. Perfect for a fixed wing pilot not needing a flight controller but redundant if you do. Range and clarity are a huge uptick for this unit. Invest in a well made mmcx antenna directly and crank it to 400mw. Paired with a good receiver it will go quite a distance, farther that you want to crash anyway. I always power my vtx separate on a wing build so ise a good clean five volt bec.
    1. A bit of a confused design as this vtx is mainly a fixed wing intended offering. It offers a 30 by 30 set of mounting holes more for a stack on a multi rotor. If your bay inside your plane has this mount option then it will work perfectly. The installed osd is a bit wonky to access with the included joystick in tight builds but will work fine if you plan your access point. Perfect for a fixed wing pilot not needing a flight controller but redundant if you do. Range and clarity are a huge uptick for this unit. Invest in a well made mmcx antenna directly and crank it to 400mw. Paired with a good receiver it will go quite a distance, farther that you want to crash anyway. I always power my vtx separate on a wing build so ise a good clean five volt bec.
  3. This review is from : FXT 5.8 GHz FPV Transmitter 25/200/400mW Switchable Video with Smart OSD (FX878T Black Knight)

    I like all the features on this. Favorite channels and smart osd and a controller for the osd. I cant seem to pick out the channel i want though. I watched a video and did what he did but i cant get it to scroll through the programed favorites. I can get it to change channels but cant see what im getting and then have to search the channels with my fat sharks then i can see what its on. Maybe im doing something wrong or maybe some functions arent working right on this. I have also tried to pick a channel in the menu under ch with no success. This would be a cool vtx if i could figure out why its not letting me scroll through numbers. The instructions really suck too and videos on youtube are not much better.
    1. I like all the features on this. Favorite channels and smart osd and a controller for the osd. I cant seem to pick out the channel i want though. I watched a video and did what he did but i cant get it to scroll through the programed favorites. I can get it to change channels but cant see what im getting and then have to search the channels with my fat sharks then i can see what its on. Maybe im doing something wrong or maybe some functions arent working right on this. I have also tried to pick a channel in the menu under ch with no success. This would be a cool vtx if i could figure out why its not letting me scroll through numbers. The instructions really suck too and videos on youtube are not much better.
      1. Wow let me start by saying that the vtx is a awesome transmitter and customer service was good.
  4. Wow let me start by saying that the vtx is a awesome transmitter and customer service was good.
    1. Conclusion: all in all, this ‘should’ be very reliable and i liked the form factor and 400mw power output level. Fxt is one of few companies out there that i’ve not had any catastrophic failures with. This is extremely important to note for a vtx of course. Because 20×20 4in1’s aren’t quite up to par yet, a vtx that mounts on a 30×30 platform makes more sense for the way i build things. Fxt has gone above and beyond and created an osd on the vtx itself. You can plug a control board directly into the vtx and go to town with all the settings right in front of your face. I usually don’t change my vtx settings much but if i did, i’d probably prefer smart audio but this is a really sure fire way to go about things as well.
  5. This review is from : FXT 5.8 GHz FPV Transmitter 25/200/400mW Switchable Video with Smart OSD (FX878T Black Knight)

    Conclusion: all in all, this ‘should’ be very reliable and i liked the form factor and 400mw power output level. Fxt is one of few companies out there that i’ve not had any catastrophic failures with. This is extremely important to note for a vtx of course. Because 20×20 4in1’s aren’t quite up to par yet, a vtx that mounts on a 30×30 platform makes more sense for the way i build things. Fxt has gone above and beyond and created an osd on the vtx itself. You can plug a control board directly into the vtx and go to town with all the settings right in front of your face. I usually don’t change my vtx settings much but if i did, i’d probably prefer smart audio but this is a really sure fire way to go about things as well.
    1. Instructions provided are clear and accurate, osd interface is easy enough to use. I like the two mounting holes on the side so it’s easy to add to a stack.
  6. This review is from : FXT 5.8 GHz FPV Transmitter 25/200/400mW Switchable Video with Smart OSD (FX878T Black Knight)

    Instructions provided are clear and accurate, osd interface is easy enough to use. I like the two mounting holes on the side so it’s easy to add to a stack.
  7. This review is from : FXT 5.8 GHz FPV Transmitter 25/200/400mW Switchable Video with Smart OSD (FX878T Black Knight)

    This is a great vtx, small and light. It has two mounting holes so it can be mounted on top of a stack or zip tied to the frame. I use heat sinks on my vtx’s and this one is perfect for that. Full features in small package, has smart audio and switchable power. This might be my new favorite vtx.
    1. This is a great vtx, small and light. It has two mounting holes so it can be mounted on top of a stack or zip tied to the frame. I use heat sinks on my vtx’s and this one is perfect for that. Full features in small package, has smart audio and switchable power. This might be my new favorite vtx.
  8. This review is from : FXT 5.8 GHz FPV Transmitter 25/200/400mW Switchable Video with Smart OSD (FX878T Black Knight)

    What i liked:- the osd, showing battery voltage, channel, power output, and on time- it fits on a 30×30 stack- has an mmcx connector- the pigtail it comes with isn’t too long- the vtx can be powered on but shut off the video transmitting- has a pit modewhat i dislike:- the size, it’s a little bigger than most vtx’s- you cannot control the power output or the channel through smart audio or tramp telemetry- you have to use a control board/buttons to adjust the power output and channeli have not done a flight test with it yet, soon to come.
    1. What i liked:- the osd, showing battery voltage, channel, power output, and on time- it fits on a 30×30 stack- has an mmcx connector- the pigtail it comes with isn’t too long- the vtx can be powered on but shut off the video transmitting- has a pit modewhat i dislike:- the size, it’s a little bigger than most vtx’s- you cannot control the power output or the channel through smart audio or tramp telemetry- you have to use a control board/buttons to adjust the power output and channeli have not done a flight test with it yet, soon to come.

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