Built-in a TCXO (temperature compensated crystal oscillator)
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Description
RadioMaster RP1 V2 ELRS 2.4GHz Nano Receiver w/ UFL AntennaThe RadioMaster RP series receivers V2 have now a built in TCXO (temperature compensated crystal oscillator) which ensures reliable, stable, and accurate signal reception, allowing for superior performance in demanding environments and enhancing the flight experience. The RP1 and RP2 2. 4GHz ELRS nano series receivers are open source receivers based on ExpressLRS. The Nano receivers, first developed by Jye Smith from the ExpressLRS development team,
The RadioMaster RP series receivers V2 have now a built-in TCXO (temperature-compensated crystal oscillator) which ensures reliable, stable, and accurate signal reception, allowing for superior performance in demanding environments and enhancing the flight experience.
The RP1 and RP2 2.4GHz ELRS nano series receivers are open-source receivers based on ExpressLRS. The Nano receivers, first developed by Jye Smith from the ExpressLRS development team, feature ESP8285 MCU and SX1280 RF chip. The RP1 has a UFL antenna socket for full-range antenna use. The RP2 has a built-in ceramic antenna which is super light and small in size and ideal for racing.
The RP1 and RP2 feature WIFI built in so you can upgrade firmware by WIFI and configure the Receiver via the built-in WebUI with your PC or mobile phone.
Due to the low-latency and high-refresh-rate RF module, the RP1 and RP2 are ideal for FPV races or Long Range. Suitable for many models due to the ultra-light and Nano size, these receivers can fit just about anywhere!
Check out all our ExpressLRS Products, Receivers, and the rest of our RadioMaster Products!
TCXO (temperature compensated crystal oscillator)
The TCXO ensures high stability and accuracy in frequency control, compensating for temperature variations. This results in consistent and reliable signal reception, even in extreme temperature conditions. It also reduces frequency drift over time, providing long-term frequency stability and preventing signal degradation. Click to learn more about the TCXO.
Dimensions:
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Features:
- Improved PCB design is better for heat dissipation.
- Upgraded rigid antenna with greater durability and performance.
- LED on the top side of PCB.
- Solder pads are improved and easier to solder to.
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Specifications:
- Item: RP1 Nano ExpressLRS 2.4ghz Receiver
- Type: ISM
- MCU: EPS8285
- RF Chip: SEMTECH SX1281
- Telemetry RF power: 10mW
- Antenna: 65mm 2.4ghz T Antenna
- Frequency Range: 2.404 - 2.479 Ghz
- Maximum receive refresh rate: 500Hz / F1000Hz
- Minimum receiver refresh rate: 25Hz
- Working voltage: 5v
- Weight: 2.2g (Including antenna)
- Dimension: 13mm*11mm*3mm
- Firmware Version: ExpressLRS v2.4 pre-installed
- FW Target: RadioMaster RP1/2 2400 RX
- Bus interface: CRSF
Package Includes:
- 1 * RP1 ExpressLRS 2.4ghz Nano Receiver
- 1 * 65mm UFL 2.4Ghz T Antenna
- 1 * User Manual
- 1 * CRSF wire
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.3 ★★★★★
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Product Reviews
★★★★★ 5
Happy with everything 👍🏽
Color: Black
Happy with everything 👍🏽
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Takes a Licking and Keeps on Ticking
Color: Green/Black
I love this watch despite the fact that it is really a toy. I love the look of the watch, I love how lite the weight of the watch is on my wrist, and it really does keep good time if you manage the solar charge properly. Other than looking cool on your wrist, this watch has absolutely no functions other than time keeping. The black plastic bezel is molded into the case and does not turn, so don't plan on using that. The watch has no light, the dial numbers are non-luminous and the hands are very limited in terms of luminosity. No buttons. All you can do is adjust the time and date by pulling out what used to be a winding stem in the good old days.
The small tag on the strap with Geographic coordinates shown on it indicate the location of the old Timex manufacturing facility (SW of Waterbury, CT).
I have a nice ledge at my bedroom window and it gets good western sun for a good part of the day regardless of the time of year. On this ledge you will find a half dozen solar powered watches (mostly Casio) properly aligned to maximize the charge they may receive each day. Note that the description for this Timex watch specifically states that a lightbulb won't charge this watch. You need direct sunlight for several hours if you want to get more than a 3-week charge into this watch.
So, I'll leave you with a couple of tips, my friends; 1.) If you are looking for a first watch to give your outdoorsy oriented Son or Daughter, then give them this one. Why? Because it is cool looking, fairly well built, and it actually works, 2.) After you receive your Timex watch, be sure to keep the display mount it is packaged with. It makes a great fixture to mount your watch on for charging and allows you to maximize the position of the solar cells on the dial so that you can optimize charging time.
Have Fun!
Jimmy
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Reviewed in the United States on February 28, 2026
★★★★★ 5
Excellent value, flawless performance for well over a year and no signs of quitting.
Color: Green/Black
Excellent value, had this for well over a year and it still keeps perfect time, still water resistant.
No worries about having to change batteries.
Owned a fancy expensive (battery) watch once and the dept. store repair intentionally sabotaged the watch in the hopes I would purchase another from them. Yeah, good luck with that, lost my business forever.
This is the 21st century, cell phones are the new time pieces, but solar is totally reliable and Timex makes it happen.
Holds a charge for many months, although I prop it in a bright window for a few days every few months or so just to make sure the cells are always fully charged, although it's probably unnecessary, just being over cautious. I haven't actually experienced this watch ever running out of power even after months of use. Damn impressive, as it should be.
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Reviewed in the United States on October 12, 2025
★★★★★ 4
Good value for solar watch
Color: Black/Orange
Nice watch! It is plastic like but it is solar. No indiglo button only a little luminous on the hands so you don't want to wear it in tje dark and expect to check the time. 45mm case is good size for my wrist and the band works good also, Not too long not too short. Overall a good watch with no problems
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Amazing Solar for the price
Color: Black/Orange, Color: Black/Orange
Great watch. Very good visibility. Ligh and feels quality. Easy to swap straps. Same size as my Casio Duro. Highly recommend.
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Reviewed in the United States on April 30, 2026