Description: What's special about this Pi 4 Model B? Want to use an external antenna with the Raspberry Pi 4 Model B? These Raspberry Pi 4 boards are carefully hand-modified to add a U.FL connector and connect it up. This greatly expands the options for external antennas, and there is no additional dongle needed. For the greatest flexibility with your plans, these are available as the board only, with an included Molex antenna on the end of a 100mm flexible coaxial cable (Manufacturer part #206994-0100), or with a panel mount antenna with a +2dBi gain (Manufacturer part #SC0480). They are available with 2GB, 4GB, or 8GB of RAM. Does the external antenna provide a better WiFi signal?That depends on the choice of antenna. However, in my testing I've noticed an improvement over the built-in antenna when using even a mildly directional antenna, properly positioned. The largest reason to use an external antenna is if the Pi is being used in a project where the PCB antenna will be obscured (for example, inside a metal enclosure). In that case, using an antenna on the end of a short piece of coax can let you route the antenna onto the outside of the enclosure. What quality assurance (QA) testing is performed?Following the modification, every Pi is tested using a partially automated process to confirm that the new antenna connection is working properly. These are all logged by Pi serial number along with the test statistics to determine a PASS/FAIL state. A QA testing certificate is provided with every individual Pi following a successful PASS. There may be some cosmetic melting of the GPIO header plastic due to its close proximity with the modification area. However, this doesn't impact the functionality or performance of the device. For general Raspberry Pi 4 Model B information, check out the official webpage: https://www.raspberrypi.org/products/raspberry-pi-4-model-b/ For information on the 100mm antenna (if you select an option that includes an antenna), check out the manufacturer's webpage: https://www.molex.com/molex/products/part-detail/antennas/2069940100 For information on the panel mount antenna, check the product brief: https://datasheets.raspberrypi.org/cm4/cm4-antenna-kit-product-brief.pdf FAQ/Troubleshooting:Q: Does this impact bluetooth? A:Yes, bluetooth and WiFi share the same antenna. Q: Does this make the WiFi any faster? A: It depends. With an antenna with higher gain (like the +2dBi whip antenna option), it might if the signal level was low enough that it impacts the speed substantially. But generally the impact on speed is only going to be marginal. Q: My Pi keeps disconnecting from WiFi every 5 minutes, and doesn't reconnect! A: There are a few things that can be causing this. The most common is you have power management turned on. Run iwconfig wlan0 and look at the output. If it says "Power Management: on" or "Power Mgmt: on" then to turn it off run sudo iwconfig wlan0 power off to turn it off. It can also be due to periodic interference from other devices, or due to a defective router.
Price: 63 USD
Location: Colorado Springs, Colorado
End Time: 2024-01-19T18:55:57.000Z
Shipping Cost: 0 USD
Product Images
Item Specifics
Return shipping will be paid by: Seller
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Model: Raspberry Pi 4 Model B
Country/Region of Manufacture: United Kingdom
Operating System: Linux
Item Height: 19.5mm
Item Width: 58mm
California Prop 65 Warning: Cancer and Reproductive Harm
Connectivity: 3.5 mm Audio Jack, Display Serial Interface (DSI), Camera Serial Interface (CSI), Gigabit Ethernet, Micro-HDMI, USB 2.0, USB 3.0
Series: Raspberry Pi 4
Type: Raspberry Pi 4 with Antenna Modification
Processor Speed: 1.50 GHz
Maximum RAM Capacity: 8 GB
Features: Built-in Wi-Fi Adapter
MPN: Raspberry Pi 4 4G Model B, Raspberry Pi 4 2G Model B, Raspberry Pi 4 8G Model B
GPU: Broadcom VideoCore VI
Item Length: 88mm
Storage Type: MicroSD
RAM Size: 2GB/4GB/8GB
Brand: Raspberry Pi
Most Suitable For: Image Processing, Casual Computing, Gaming
Processor: Broadcom BCM2711 quad-core
Available Variations
Color: No antenna, modified Pi only
Price: 63 USD
Available Quantity: 29
Quantity Sold: 29
Color: No antenna, modified Pi only
Price: 86 USD
Available Quantity: 33
Quantity Sold: 33
Color: Molex 100mm flexible antenna
Price: 65 USD
Available Quantity: 2
Quantity Sold: 2
Color: Molex 100mm flexible antenna
Price: 88 USD
Available Quantity: 24
Quantity Sold: 24
Color: Molex 100mm flexible antenna
Price: 107 USD
Available Quantity: 28
Quantity Sold: 28
Color: No antenna, modified Pi only
Price: 105 USD
Available Quantity: 41
Quantity Sold: 41
Color: +2dBi Panel Mount Antenna
Price: 70 USD
Available Quantity: 6
Quantity Sold: 6
Color: +2dBi Panel Mount Antenna
Price: 93 USD
Available Quantity: 36
Quantity Sold: 35
Color: +2dBi Panel Mount Antenna
Price: 112 USD
Available Quantity: 63
Quantity Sold: 63
