I am not saying anything about any product associated with a DJI flight system, but this thread reminded me of something a friend of mine told me years ago. The guy was a microwave engineer and brilliant.
Back in the 1970's, when CB radios were the rage, a small company made a 'signal booster' that would be placed inline with the antenna coax. It was a simple device that had no battery. It was merely a box with two coax connections and a 2 position switch that was labeled 'normal' for one position and 'boost' for the second.
Everybody swore by these things. When they were installed, the first thing CB'ers would do would be to put it in the 'normal' position and fill the airwaves with their prose "Breaker breaker one nine... anyone copy?". Someone would answer "Gotcha here good buddy". "You got the Cracker Jack here. How's my signal?" "Ummm, it's OK. Maybe a little weak" "Hold on, let me put my new signal booster into BOOST mode...... how is it NOW" "Wow, that's much better. Like nigh and day. Where did you get that thing?" and a satisfied customer was born right along side a new one.
Now, what was actually going on here?
The sneaky guys that made this little box were later convicted of fraud. You see, the box was nothing but a switched resistor circuit. In 'BOOST' mode, the signal passed straight through and was unaltered. In NORMAL mode, the signal passed through a resistor where it was WEAKENED.
Buyer beware.
Back in the 1970's, when CB radios were the rage, a small company made a 'signal booster' that would be placed inline with the antenna coax. It was a simple device that had no battery. It was merely a box with two coax connections and a 2 position switch that was labeled 'normal' for one position and 'boost' for the second.
Everybody swore by these things. When they were installed, the first thing CB'ers would do would be to put it in the 'normal' position and fill the airwaves with their prose "Breaker breaker one nine... anyone copy?". Someone would answer "Gotcha here good buddy". "You got the Cracker Jack here. How's my signal?" "Ummm, it's OK. Maybe a little weak" "Hold on, let me put my new signal booster into BOOST mode...... how is it NOW" "Wow, that's much better. Like nigh and day. Where did you get that thing?" and a satisfied customer was born right along side a new one.
Now, what was actually going on here?
The sneaky guys that made this little box were later convicted of fraud. You see, the box was nothing but a switched resistor circuit. In 'BOOST' mode, the signal passed straight through and was unaltered. In NORMAL mode, the signal passed through a resistor where it was WEAKENED.
Buyer beware.