Availability: 18 In Stock
Sku: RMS-RX-R84

RadioMaster R84 4 Channel RC Radio Receiver

Click here to download product manual.

Channels: 4
Frequency range: 2400-2483.5Mhz
Power input range: 4.5-6V
Signal format: Frsky D8 Compatible
Output format: PWM
Support return: support return RSSI
Control distance: more than 1km
Antenna length: 6cm
Size: 17x11mm
Weight: 2 grams

Orders are shipped from Columbus, the capital city of Ohio, USA.

An order placed before 2:00pm Eastern Standard Time will be shipped the same working day.

We ship on Monday-Friday by US postal service (USPS) and UPS, and Saturday morning by USPS if a local post office is open. Any order placed on Saturday morning may or may not be shipped the same day. Orders placed on Sunday and US holidays will be shipped the next working day.


Retail orders above $80 may be eligible for free shipping, including contiguous United States, Alaska, Guam, Hawaii, Puerto Rico, and APO addresses. We will use either USPS or UPS that most packages can be delivered in 3-5 working days, but not guaranteed. However, for packages contain large and heavy items, such as power supply, we may use parcel post service or UPS Surepost that may take up to 7 working days to be delivered.

USPS First Class Mail and Priority Mail, Express Mail, and UPS services can be used for domestic addresses. Tracking number and delivery confirmation will be provided to the customer when they are available. If you have not received a tracking information E-mail, please log into your account and click the "view order" link, then click "Track your order" link to find out the tracking number and ship method.

USPS Priority Mail is typically delivered in 3 working days. But very occasionally a priority mail package may be delayed for several days in the mailing system. If delivery time is extremely critical to your order, we would recommend Priority Mail Express or other couriers.

Domestic First Class Mail is only 1-2 days slower than Priority Mail in delivery. We suggest domestic customers choose First Class Mail for an order under 15 oz to save shipping cost.

Real shipping cost is calculated according to package weight and distance, and can be found in the checkout page after delivery address is specified in the fields.

Any order of $200 and above requires addressee's signature confirmation upon receipt of the package. Please contact us in advance or leave a comment in the message box if you want to waive signature confirmation.

We always check the legality of potential fraudulent orders. This procedure may lead to 1-2 working days delay in shipping in some rare cases.

We do not ship products to shipping forwarding companies. Any order shows this kind of address will be cancelled and refunded without notification.


DHL, DHL Express, US Postal Service (USPS) First Class Mail, Priority Mail, and Express Mail (EMS), and UPS services can be selected for international addresses. Shipping cost is calculated according to package weight and distance, and can be found in the check out process. A package usually takes around 7-10 days to be delivered, or occasionally up to 45 days depending on the processing speed in your country, especially in some countries such as Brazil and Russia.

USPS First Class Mail is a budget shipping method. As soon as a First Class Mail package left USPS Chicago hub there will be no tracking information available. If you need detailed tracking information and timely delivery please do not use this shipping method.

Presently we cannot ship lithium batteries internationally by US Post Service or any other air shipping method. Please select UPS Ground if your order contains LiPo or LiFe battery.

We do not ship products to shipping forwarding companies. Any order shows this kind of address will be cancelled and refunded without notification.

RadioMaster R84 4 Channel RC Radio Receiver

Customer Reviews

Based on 5 reviews
Curtis S.
Challenging but no problems

TX16S MAX has been flawless so far. Open TX is challenging, but I am figuring it out.


Guy G.
These guys rock

Didn't realize why I felt so comfortable with Buddy RC till I realized my relationship with TJ from Flite test vids. I will shop here often and will continue to enjoy the vids and customer service at Buddy RC. 👍👍👍👍

John J.
Great tiny rx

Great tiny receiver that is easy to bind and configure for failsafe mode, at a nice price. Will use these for any small aircraft.

Daniel R.
radio master 4 channel

I've got an old electric powered Gentle Lady glider that I put this receiver in. Works grreat and I love the bind button. Its a big improvement over FrSky. I had a FlySky receiver in the plane and it worked great too - with the antennae inside the wood fuselage. With the Radio Master I got a low signal warning with the antennae in the fuse but it worked fine once I routed them out of the fuse.

John N.
Radiomaster TX16S MAX

WHAT AN AWESOME TX!!!!!!! Dont get me wrong, there is a learning curve (2 days for me) to find out where you do stuff, but after that OMG!!! My IX12 has sat on the shelf! BEST BANG FOR THE BUCK!!!!!!!!! have flown my helis, turbines, and various BNF with no issue what so ever.... I can't wait for glider season!!!! https://youtu.be/cU7TxqclamA

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