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Put a number next to anything you want, pick where it ships, and Checkout takes you to one Stripe page for all of it. Quantities can still be changed there. Free shipping in the US, $25 flat everywhere else; sales tax where it applies.

Companions

Item	Price	Qty
Spotter — pre-programmed ESP32 in a black enclosure, stealth antenna, set up for your area. Works on its own with your phone; no Pi needed. Details	$64
Full Spectrum kit Recommended Only 3 left — pre-programmed Raspberry Pi 4 + two RTL-SDRs with antennas + Spotter, tested together. Details	$499
Pre-configured RTL-SDR with mag-mount antenna. For a Pi you already have; two is the right number. Details	$40

Antennas

Item	Price	Qty
Car roof antenna kit Sold out — wideband mag-mount antenna on a 3 m SMA lead, plus a free tube of silicone sealant. Fits the RTL-SDR, a HackRF and any radio with an SMA socket.	$49
Directional Yagi Sold out for the RTL-SDR — 9 elements, SMA lead, bracket. Gain one way: a fixed plate reader or hotspot from blocks away.	$59

Cases and cables

Item	Price	Qty
Case set with hard carry case (for the Full Spectrum kit: Pi case with fan, ESP32 case, two RTL-SDR sleeves)	$99
Pi case with heatsinks and fan	$25
RTL-SDR sleeve	$12
USB extension, 1 m	$8
USB extension, 2 m	$10
USB extension, 3 m	$12

Shipping

United States — free Outside the US — $25 flat

On the next page Stripe asks where you'll use it (city or county), so the radios ship set up for your area. Receive only: they listen and talk only to your phone. Follow the laws where you drive.

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Prefer one thing at a time? Every product also has its own order button on the shop.