SKU:300-00499
Sepura STP8000 STP9000 SC20 SC23 Extended Helical Antenna 407-473MHz (Yellow Dot)
+ VAT: £2.40
Couldn't load pickup availability
Genuine Sepura extended wideband helical antenna for the STP8000, STP8100, STP8200, STP9000, SC20 and SC23 TETRA radios. Covers the 407–473MHz UHF band with a centre frequency of 440MHz. Identified by a yellow dot on the tip. Length approximately 67mm.
Selecting the correct antenna
Antennas for the STP and SC20/SC23 series are selected by operational frequency band. You can identify the correct antenna by the coloured dot or the specific frequency range. Nominal gain figures are measured in free space at resonance and will degrade when used close to the body. Quarter wave whip antennas offer a modest gain advantage over extended helical antennas, particularly when the radio is worn on the belt rather than the shoulder, where body absorption is higher. VHF antenna options are also available for the SC20/SC23 — please contact us.
Extended Helical Antennas (>-1dBi)
| Colour | Frequency | Part No. |
|---|---|---|
| Red | 344–372MHz UHF | 300-00652 |
| Green | 380–430MHz UHF | 300-00417 |
| Blue | 380–400MHz UHF | 300-00661 |
| Yellow | 407–473MHz UHF | 300-00499 |
| White | 410–430MHz UHF | 300-00662 |
| Black | 450–470MHz UHF | 300-00663 |
Quarter Wave Whip Antennas (>0dBi)
| Colour | Frequency | Centre | Part No. |
|---|---|---|---|
| Brown | 300–344MHz | 322MHz | 300-00708 |
| Green | 380–430MHz | 405MHz | 300-00418 |
| White | 410–430MHz | 420MHz | 300-01031 |
| Black | 450–470MHz | 460MHz | 300-01032 |
| Orange | 806–870MHz | 838MHz | 300-00498 |
Technical specifications
- Nominal impedance: 50Ω
- VSWR at resonance: ≤1.5:1
- Connector type: SMA male
- Operational temperature: -20°C to +55°C (usable range -30°C to +75°C)
- Length: approximately 67mm
Part number: 300-00499.
Authorised Sepura Dealer: Showcomms is an authorised Sepura reseller. We supply individuals and organisations who need genuine Sepura products outside of their normal procurement route — whether that’s a one-off spare, an accessory not covered by your framework, or an officer assigned away from their usual radio pool who needs a charger or battery locally. If you are unsure whether we can help, please get in touch before ordering.
