5-section telescopic antenna with adjustable length from 7 to 25 cm

Information about this module is generated with the help of AI. The description may be incomplete, inaccurate, or subject to change.
Telescopic antenna with 5 sections and a diameter of approximately 5 mm. The antenna can be collapsed to approximately 7 cm and extended to approximately 25 cm. The adjustable length makes the antenna suitable for experiments and electronic projects where the antenna length needs to be adapted to the radio frequency.

The antenna length can be used to adjust the electrical resonance. As an approximate starting point, one quarter of the wavelength can be used for a simple monopole antenna. At 315 MHz, one quarter of the wavelength is approximately 23.8 cm, while at 433 MHz it is approximately 17.3 cm. The antenna can therefore be adjusted to approximately these lengths for experiments at these frequencies.

Higher frequencies can also be of interest. At 868 MHz, one quarter of the wavelength is approximately 8.6 cm, while at 915 MHz it is approximately 8.2 cm. The collapsed length of approximately 7 cm therefore also makes the antenna useful for experiments at these frequencies.

The actual resonant frequency is affected by factors such as antenna diameter, connection, ground plane and surrounding electronics. The stated lengths should therefore be regarded as approximate starting values. For precise tuning, the antenna length can be adjusted while measuring the antenna impedance or standing wave ratio.

The antenna is suitable for various electronic projects, radio experiments, receivers and transmitters where a compact and adjustable antenna solution is required.

Facts.
Number of sections: 5
Maximum extended length: approximately 24 cm
Minimum collapsed length: approximately 7 cm
Diameter: approximately 5 mm
Antenna type: Telescopic antenna
Calculated quarter wavelength at 315 MHz: approximately 23.8 cm
Application: Radio experiments and electronic projects
Tuning: By adjusting the antenna length
Suitable principle: Quarter wavelength for monopole antenna

Included.
1 pc module.

About the product.
Weight: approx 8 gram.
Contact us if you have questions at info@pchbutik.se
Article no: 4358
Remaining stock quantity can be found under the Product details tab.
In our range since: 2026-09-21

For you.
Components and building materials for those who build electronics themselves experiment and develop.