# Stubby Antenna, 433MHz, 1.5 VSWR, 1dBi Gain, Vertical Polarisation, SMA Connector

![Product image](https://novapart.co/image/farnell:3020306/)

**URL**: https://novapart.co/products/DELTA21/X/SMAM/S/S/20/stubby-antenna-433mhz-15-vswr-1dbi-gain-vertical
**SKU**: DELTA21/X/SMAM/S/S/20
**Manufacturer**: SIRETTA
**Price**: €5.0000
**Stock**: 10+
**Lead Time**: 92 days (indicative)

## Description

Antenna Type:Stubby; Frequency Min:-; Frequency Max:433MHz; Antenna Mounting:SMA Connector; Gain:1dBi; VSWR:1.5; Input Power:50W; Input Impedance:50ohm; Antenna Polarisation:Vertical;

## Specifications

| Parameter | Value |
|---|---|
| Gain | 1dBi |
| Svhc | No SVHC (04-Feb-2026) |
| Vswr | 1.5 |
| Input Power | 50W |
| Antenna Type | Stubby |
| Frequency Max | 433MHz |
| Frequency Min | - |
| Product Range | Delta 21 |
| Input Impedance | 50ohm |
| Antenna Mounting | SMA Connector |
| Antenna Polarisation | Vertical |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3020306/)

## **Delta  21** 

433MHz ISM Stubby Antenna 

## **Key Features** 

- Dedicated ISM Antenna 

- ISM Band: 433MHz 

- Discrete Antenna size 

- TETRA Compatible. 

## **General Description** 

The Delta 21 is a dedicated 433MHz ISM band antenna which combines good performance with a small size, enabling its use with many of today’s remote control systems and 433MHz alarm systems. 

## **Additional Considerations** 

- Ideal for remote control systems and wireless alarms 

- Does not rely on mounting on metallic surface 

- Meets all EU compliance criteria for electronic goods 

Terminated with an SMA male connector, it is ideally suited to applications requiring a simple, cable free set up, such as alarm panel equipment, garage or gate remote controls and TETRA Radio Systems. 

The knuckle design allows the antenna to be positioned to take best advantage of the incoming signal. Allowing straight, 45° and 90° positions along with 360° rotation. The omni directional, radiating element is capped with a black high-grade rubber mould. 

Siretta Ltd sales +44(0)118 976 9014 Basingstoke Road fax +44(0)118 976 9020 Spencers Wood email sales@siretta.com Reading web www.siretta.com Berkshire RG7 1PW 

Registered in England No. 08405712 VAT Registration No. GB163 04 0349 

Rev 1.0 

**Delta  21** 433MHz ISM Stubby Antenna 

## **Electrical Specifications** 

## **Mechanical Specifications** 

|Impedance:|50 Ohm|
|---|---|
|Max Power:|50W|
|Peak Gain:|1 dBi|
|VSWR:|<1.5 @ 433MHz|
|Operating Frequencies:|ISM: 433MHz|
|Radiation:|Omni|
|Polarization:|Vertical|



|Operating Temperature range:|-20 - +60°C|
|---|---|
|Storage Temperature range:|-30 - +75°C|
|Dimensions:|L68mm|
|Connector:|SMA male|
|Mounting Method:|Direct connect|
|Radome Material:|Polyurethane|



**Radiation Plots Horizontal** LEX **Vertical** JER £|s {| EY NEY **VSWR** Frequency VSWR se MEET yt 433MHz 1.175:1 S ~~ee~~ SSE EEE a CeCe Pee a a a 2 **Ordering Details** Part Number 

**VSWR** 

## **Ordering Details** 

Part Number Description DELTA21/X/SMAM/S/S/20 Stubby 433MHz ISM Band Antenna, SMA Male 

Registered in England No. 08405712 VAT Registration No. GB163 04 0349 

Siretta Ltd sales +44(0)118 976 9014 Basingstoke Road fax +44(0)118 976 9020 Spencers Wood email sales@siretta.com Reading web www.siretta.com Berkshire RG7 1PW 

Rev 1.0 



## Links

- [View this product on Novapart](https://novapart.co/products/DELTA21/X/SMAM/S/S/20/stubby-antenna-433mhz-15-vswr-1dbi-gain-vertical)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/siretta/delta21-x-smam-s-s-20/433mhz-ism-band-68mm-stubby-antenna/dp/3020306)
---

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