Signal strength isn’t just about distance—or even obstacles like walls and metal. In many cases, your range comes down to something more basic: how radio waves are emitted from the antenna.

Wireless devices don’t broadcast equally in all directions. A small change in antenna orientation can dramatically affect performance. Before you move smokers, add gateways, or assume you’ve hit the limit of RFX range, try rotating a probe or repositioning a gateway. That alone can be the difference between a rock-solid connection and a dropped signal.

Direction Matters More Than Distance

Signal Transmission

RF Antennas transmit radio waves from their sides, not from the points. The RFX MEAT antenna is located in the handle of the probe. The top of the antenna (marked with the ThermoWorks logo) creates a “donut hole” where radio signal strength is weakest. This behavior isn’t unique to RFX MEAT, it’s true of all wireless probes.

Antenna Alignment

For best results, align the probe and gateway antennas in parallel. This orientation utilizes the antenna’s most effective transmission area—resulting in a stronger, more reliable signal.

The weakest signal strengths occur when the end of the RFX MEAT probe is pointed at RFX GATEWAY.

Check Your Signal Strength in the ThermoWorks App

You can test various configurations and verify signal strength in the ThermoWorks App.

From the RFX MEAT device page, tap settings and scroll down until you see 'Strength'.

Note: A minimum or fair signal strength will decrease battery life.

A Real Life Scenario

In most situations, you won't need to stress over antenna alignment. However, if you find yourself in a situation with a poor connection and your RFX MEAT probe is pointed towards your RFX GATEWAY. Simply rotate the meat 90 degrees, exposing the side of the handle towards your RFX GATEWAY.

You'll find that as you orient the antennas correctly, the connection through walls can be stronger than if the devices are close together with poor alignment.

What's the Deal with Aluminum Foil?

Aluminum foil is extremely effective at interfering with Radio Waves. (See Tin Foil Hats...) It's in large part because foil has high electrical conductivity.

When a radio wave hits aluminum foil:

• The electric field of the wave pushes the free electrons around
• Those electrons rearrange instantly
• That movement creates an opposing electromagnetic field
• The incoming wave is mostly reflected

Foil is a nuisance for any wireless probe. Here are a few tips to beat the foil:

Pierce the Shield (Recommended): Push the RFX handle directly through the foil. Wrap the foil tightly around the shaft at the minimum immersion line, leaving the top of the handle fully exposed to broadcast the signal.

Kill the Crinkles: If you must wrap the entire probe inside the foil, keep it completely smooth. Every single crinkle creates a new pocket of interference. Press it flat and tight.