Does receiver voltage increase range??
 

I'm trying to get more range out of my Futaba 4PLS. I'm running either 304sb's, 203GF's, or 2008sb. I was hoping that the 2008sb would increase range a bit, however it seems to be about the same. In some recent searching/ testing, Ive noticed that if I power my receiver with a 2s lipo RX pack(from my nitro cars) I seem to get better range. Typically I run the internal ESC at 6.0v.

Does this seem to make any sense? Thanks for any experience, or different idea's on more range.

I didn't want to invest in a 4PX/4PX-r unless i'm guaranteed more range.

It is weird because inside the receiver there is a voltage regulator making a steady voltage for the electronics.

Exactly my logic, however, by setting the bec or external voltage higher, the servo/ electronics obviously get more V. I was just wondering if that somehow ups the range as the Rx side sees more V.

I wish futaba listed ranges, but I guess there are too many factors... Ideally I'd like to have 1/2mile

Maybe the voltage drops are less.....

RX, I don't think you are able to do that, its already a voltage regulator for servos and ESC. You can maybe do it with the TX. Radio operators of HAM and CB call it peak and tweak. Maybe Illegal to do. Radio systems of RC Futaba and Sanwa are different, each proprietary. One manufacture does better then the other.

FCC compliance come into the picture. Tweaking TX could cause static on home cordless phone that use 2.4mhz which RC runs. Cordless phone are regulated to 120ft from base, and also WiFi wireless on computers. CB limited to 4watts, 2 on walkie talkies. TX and home phones even less.

Be kinda funny when you are messing around on the street, and neighbors phones ringing!!!!

Hahahaha...."legally" limited...I used to peak and tweak CB's when I was in that hobby. In addition, I also had "HAM" amplifiers that were also modded for use in the 27Mhz band of CB. Dont get me started on the "HAM" radios that are modded to include the CB band..:sneaky::sneaky::lol:

Yes, that can make sense, and I've had similar results in the past. The battery is a "clean" source, i.e., free of electrical noise. Some receivers don't reject power supply noise as well as they should, and will therefore have more range when run from a battery. It's not necessarily the extra voltage that does the trick, but the lower noise.

This makes perfect sense... Using my data logs, when going from full throttle to brakes, I do see a small deviation in BEC output voltage from the ESC to RX. This is also typically when I loose reception/ control of car...

now all I need to do is figure out how to get some more power out of the Tx side... :)

Seriously??? Lucky you can see that far leave alone drive a car/truck that distance! That'd be like looking at a fly on the neighbors window across the street!

this specific application is for doing speed runs.. typically we do it at night utilizing lights.... typical distance of run is .45/mile or .9 total... crazy how much distance you can cover going 160mph....

When running my boat I have had similar issue's as well... easy to get it far out.

I have noticed a lot less issues when running high voltage batteries in the TX. I am sure others have gotten a lot better performance going to higher voltage batteries as well.

It would be binoculars for me!!! :nod:

I am running the LiFe 6.6v pack in my transmitter....

You know about aye!! RF with Cb's and HAM its not the power it puts out, its modulation to be clear. RC uses modulation. Other things to look at power line or telephone line, above ground or buried.

You can increase range by using better antenna's. Look for a WiFi shop and you will find larger antenna's with a better output and sensitivity

Update.. Tested out 3 different antenna's from a local computer store, no real sucess... Finally decided to pull the trigger on a 4Px transmitter to see if that would do any better, no such luck.

Looks like I will have to find a radio/electronics guy that is willing to bump the transmitter voltage, or just leave well enough alone.

Maybe changing the length of antenna if still using AM or FM. 2.4mhz a different animal, lengthening the antenna changes the wavelength, 4" antenna are good enough for 2.4mhz, some aircrafts are even shorter, some of them are 1" in length.

That's exactly what we used to do back in the 90's. A lot of the Futaba radios of the time used 7 'AA' batteries, but you could find battery holders that could hold 8. It pumped up the range slightly and cut down on glitches. But those were AM radios, and probably analog, so they didn't care what the voltage was as long as it wasn't ridiculous high. I don't know how today's digital radios would cope with the extra voltage.

There are certain +3 up to +12dB antenna's

Like:
https://www.amazon.com/2-4GHz-9dbi-R.../dp/B0044DX59M

gonna Test out a few tonight if the weather holds, I'll report back...

Just be aware that depending on your location, you may be breaking the law if you boost TX power above the legal limits.

IM in the sticks of Pa... I'll check out the FCC, but I doubt I'll be doing any harm. Crazy we make these laws, yet cant pay anyone to enforce them... :confused: Government:o

What you need is an air transmitter package, sticks but that is fine.

I am running a Heli receiver in 1 car, and see no difference... If what I am reading is true, 2.4ghz protocal is limited air or surface.... but there is so much conflicting data it makes my head spin.

I can confidently say that all of the futaba 2.4 stuff has about the same range.