> **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

# Iridium Qualified 9704 Helical Antenna

**Type:** Product page · **SKU:** WRL-29361 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/sparkfun-iridium-helical-antenna-rockblock-9704-sma-ip67.html ([markdown](https://core-electronics.com.au/sparkfun-iridium-helical-antenna-rockblock-9704-sma-ip67.html.md))

The Maxtena M1621HCT-P-SMA is a compact, high-performance passive Iridium antenna, designed for reliable data communication over the Iridium satellite...

## Pricing

- **Price:** $234.95 (inc GST) — $213.59 AUD, exc GST
- **Quantity discounts:** 5+ $207.18 (exc GST) · 25+ $202.91 (exc GST) · 100+ $194.36 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 01 and Sep 07.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=WRL-29361:1` (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/WRL-29361:1.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

The Maxtena M1621HCT-P-SMA is a compact, high-performance passive Iridium antenna, designed for reliable data communication over the Iridium satellite network. It is ideal for use with the RockBLOCK 9704 satellite IoT module.

This rugged antenna features a precision-tuned helical design, providing consistent performance across the full Iridium band (1616–1626.5 MHz). It’s built for durability in challenging environments, with an IP67-rated housing and a low profile form factor that makes it ideal for mobile, maritime, and harsh outdoor deployments.

The M1621HCT-P-SMA connects via a standard SMA male connector and is compatible with a wide range of Iridium-enabled devices, including Ground Control’s RockBLOCK 9704 SMA.

### Features & Specs

- Frequency Range: 1616-1626.5MHz
- Polarization: RHCP
- Peak Gain: 2.8 dBic (typical)
- Axial Ratio: 0.2 dB (typical) / 0.5 dB (max)
- VSWR: 1.5 (max)
- Impedance: 50 ohms
- Connector: SMA Male
- Dimensions: 49mm (height) x 19mm (diameter)
- Weight: 52g
- Environmental Rating: IP67
- Operating Temperature: -40°C to +85°C
 
### Documentation

- [Datasheet](https://core-electronics.com.au/attachments/localcontent/Maxtena-M1621HCT-P-SMA-Data-Sheet_GPS-29361_28343638e7b.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/W/R/WRL-29361-1.jpg)