ReadyMadeRC
8W V6 Pro Booster for 433MHz Digital Systems
| FEATURES of V5 | added safety and security |
Vin, Current in, RF Power Out, Efficiency:, 9.0V 2.58A 9.12W 39% DO NOT GIVE UNIT OVER 8V, Different cable types have different loss, here is the max length allowed using different cables:, RG-58CU 18meters (59ft), Old 3xx rx firmware:, The ultra sensitive receiver will be blocked/jammed if distance to booster antenna is under 10-20meters so avoid that !, NEW 307-308 or higher RX firmware:, No more blocking problems, an RX can be as close as 25cm (10 inch) from a booster at 7W before minor blocking is detected., WARNING:, Power supply MAX is 8.4V, max supply current 2.5A, newer ever exceed that., Notice: The use and operation of this product in the USA and many other countries requires an amateur/ham radio license, and some countries may forbid its use entirely. It is the responsibility of the purchaser to ensure that the use of this product meets the requirements imposed by your government’s rules and regulations for RF devices. Do not purchase this product if you are unsure of the government requirements or are not able to comply with them. ReadyMadeRC cannot be held responsible for your actions if you purchase and/or use this product in violation of your government's regulations.,
Here is the NEW PA Booster version 6 PRO, again like on the TX, running temperature, materials, and improved design has been the main goal of the new improved version.
The black anodizing protects the aluminum for oxidization, higher strength and better cooling.
Auto power on from 50mW input it will power up
if no RF signal input it will idle at zero current, so it can now be left powered on all day long
LED indicator one dual color, red-green
Green lit constantly = all is perfect, RF level in is fine, and DC supply is fine
Green off blinks start at 150mW and down to 50mW, longer and longer off time = less input power
Red blinks show input voltage is under 6.8V
longer and longer RED lit time when voltage drops more.
Green and Red blinks can be active at the same time in case both low rf level and low voltage
booster still works at different voltages, and can now be powered as low as 2-3V
The booster will give good power from 125mW to 500mW input
500mW is nominal input, 125mW is -6dB accepted max cable loss, at this point output will drop 1db
input will survive 1W for 10 sec, and 2W for 2 sec, maybe more but I did not dare to test the kill time
The previous booster versions had idle currents in the 400-600mA range, so booster could not be left powered on when not flying
risk of using all battery power existed. Users with V3.x boosters must be aware of this.
Idle current is defined as the current the booster draw with no RF input
Idle current for booster V5 is only 1.4 mA !
This PA booster is designed to get 500mW input from the V3 RC system
Boosting 0.5W to 7W will increase the range by at least a factor 3 !
The PA module consume about 2A at 7.2V and give 7 to 8 Watt out of pure long distance RF power
I use a big heatsink so it can be opperated 24hr if needed. The PA booster is 77mm wide, 107 mm long, 39 mm height Weight is 443 gr !! so it is solid quality !
Booster Specifications Version 4 at 500mW input
8.5V 2.50A 8.71W 41% DO NOT GIVE UNIT OVER 8V
8.0V 2.42A 8.51W 44% MAX recommended supply voltage
7.5V 2.32A 7.94W 45%
7.0V 2.22A 6.92W 44%
6.5V 2.12A 5.89W 43%
6.0V 2.00A 4.00W 33%
5.5V 1.90A 2.95W 28%
5.0V 1.78A 1.74W 19%
4.5V 1.67A 1.35W 18%
4.0V 1.55A 1.12W 18%
3.5V 1.40A 851mW
3.0V 1.03A 589mW
2.5V 613mA 245mW
2.0V 180mA 11mW
So it is possible to change RF power by simply using powersupply voltage adjust.
a 6 cell NIMH battery and a rotary switch (brake before make) can be used.
RF cable
The BNC - BNC cable you need to use from standard 500mW tx unit to your booster (is not supplied)
use any 50 ohm impedance cable with loss from 0dB to 6dB at 500MHz.
network cables with BNC 10base-2 are 50 ohm, cheap and available world wide.
RG-223 17meters (55ft)
RG213U 37meters (121ft)
Ecoflex10 67meters (219ft)
Install and use
It is recommended to place this booster with antenna as far away from ground station video receivers
as needed, to achive full video range ! this must be checked with booster on/off.
mount booster with antenna as hight and free as possible to achive as good range as possible.
Directional antennas will give you futher range, a gain of 10dB = 3 x the range !
ham radio beam antennas for the 70cm band are cheap and easy to get worldwide.
no permanent harm to the receiver, only RC lock up -> failsafe, but can be harmfull to plane !
With no booster (500mW standard) avoid distance to receiver under 2-3 meters !
Temperature Check your booster is not running too hot, a heatsink temperature of 50C (122F) is maximum allowed !
50C is arround that temperature it is impossible to touch the heatsink for 3sec !
Use 6 cell NIMH battery or 2 series LIPO cell.
Do NOT reverse voltage polarity, a fuse inside the Booster wil blow if reversed and if lucky the amplifier is possible to repair cheap
Do NOT opperate this PA without output antenna connected.
High / low power
see on the supply voltage chart you can use supply voltage to adjust the watt out,
and then also the range, the idea is to use as little as possible power, seek far away, looking for range problems,
when you get problems you can switch up the power and continue your mission or return home safely.
Heres the normal 8V supply from 2S lipo, and via the switch 3.6V will give you 1W
This is a more safe way to do it, you can change lo / hi on the switch.
And, when lipo is empty the nimh pack will save your plane. You can use other cell counts to fit your needs, for the low power section, maybe use 4 or even 5 NIMH cells.
Check price and availability
Found 10 years, 10 months ago