# 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.

## 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)