> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# GPS Antenna Ground Plate

**Type:** Product page · **SKU:** GPS-17519 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/gps-antenna-ground-plate-48091.html ([markdown](https://core-electronics.com.au/gps-antenna-ground-plate-48091.html.md))

Many magnetic mount GPS antennas rely on being mounted on a car or other large metallic object to provide a good ground plane. But what if you want to use an antenna...

## Pricing

- **Price:** $16.75 (inc GST) — $15.23 AUD, exc GST
- **Quantity discounts:** 5+ $14.77 (exc GST) · 25+ $14.46 (exc GST) · 100+ $13.85 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 1 today, and up to 18 more in 5–11 days.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=GPS-17519:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/GPS-17519:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

Many magnetic mount GPS antennas rely on being mounted on a car or other large metallic object to provide a good ground plane. But what if you want to use an antenna not on a car? The GPS Antenna Ground Plate is the solution! This plate significantly increases the performance of GPS and GNSS antennas.

We're always trying to improve things here at SparkFun. This updated design features a 1/4-20 UNC nut welded to the bottom of a thinner plate (1/8" is now 1/16"). The nut adds additional thickness so now the tripod screw is no longer prone to the plate. We've also decreased the thickness of the plate to reduce weight.

The steel disc provides a ground plane for a low cost u-blox ANN-MB-00 antenna and enables centimeter-level positioning when coupled with a L1/L2 capable GNSS receiver such as the ZED-F9P.

The 1/16” thick steel plate fits onto the standard ¼-20 UNC camera mounting screw. While it is not the cleanest piece of steel and weighs in at a hefty 0.4211 lbs, it does provide a solid base to allow a GPS Magnetic Mount Antenna to sit flat on the ground plane while mounted to a tripod.

**Features**

- **Diameter:** 4 Inches
- **Thickness:** 1/16"
- **Weight:** 0.4211 lbs
- **Center Thread:** 1/4-20 UNC Thread
- **Finish:** Industrial

**Documents**

- [u-blox white paper on using low cost antennas for RTK](https://core-electronics.com.au/attachments/localcontent/AntennasForRTK_WhitePaper__UBX-16010559__161866fe800.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/1/7/17519-gps_antenna_ground_plate-01.jpg)