You are viewing the article How to DIY FM Antenna at Tnhelearning.edu.vn you can quickly access the necessary information in the table of contents of the article below.
This article is co-authored by a team of editors and trained researchers who confirm the accuracy and completeness of the article.
The wikiHow Content Management team carefully monitors the work of editors to ensure that every article is up to a high standard of quality.
This article has been viewed 4,783 times.
This wikiHow teaches you how to make your own antenna to improve the range of your FM receiver. Depending on your preferred frequency, you can use coax cable or speaker wire.
Steps
Use coax cable
- 50 Ohm (or 75 Ohm) coaxial cable with copper shielding.
- FM receiver with coaxial connector.
- 9.5 mm . diameter copper tube
- Wire cutting pliers
- Hacksaw
- Welding tools
- Divide 468 by the frequency you want to connect (eg: 468/108MHz = 4.3).
- Divide the last result by 2 (for example, 4.3/2 = 2.15).
- Continue multiplying by 30.5 cm (12 inches) to calculate the antenna length (for example, 2.15*30.5 cm = 65.57 cm).
- You can use wire cutters or hacksaws to do this.
- For example, if the antenna is estimated to be 15 cm long, you need to strip 7.5 cm of the length of the protective case.
- You will need to remove the copper protective cover during this process. The easiest way is to use a saw to mark a shallow line around the area to be cut and and then try to peel the copper sheath off the cable.
- As a reminder, if you plan to use a 15 cm antenna, the copper tube should be 7.5 cm long.
- The less obstructions between the antenna and the FM radio, the stronger the signal you will receive.
- The coax cable is stiff enough to lie in the desired direction without support, but you can use brackets or tape to secure the antenna if necessary.
Use speaker wire
- Speaker cables are not the ideal solution for long-range reception. If the signal malfunctions continuously, you should use coax cable.
- 3 meters speaker wire
- FM receiver with clamp (or straight) connector
- Wire stripping pliers
- FM receivers will have a clamp or straight connector. A clamp-on connector is clamp-like as the name suggests, while a straight connector takes the form of a metal pin that plugs into a connection post.
- If there is only one connection port on the FM receiver, you can twist the two bare ends of the “T” end together to form one and connect to a clamp or post.
- You may need to move the FM receiver so that the signal is strongest.
Advice
- Both antennas in this article are designed to be “balanced” and would be inconvenient to connect to a typical “unbalanced” drawstring antenna.
- Coax and speaker cables are relatively cheap. If you already have the right tools to make the antenna, you can do it yourself for much less than buying a new FM antenna.
Warning
- An outdoor antenna requires a weatherproof solution (such as a waterproof junction box).
- If the antenna is installed outdoors, additional lightning protection is required.
This article is co-authored by a team of editors and trained researchers who confirm the accuracy and completeness of the article.
The wikiHow Content Management team carefully monitors the work of editors to ensure that every article is up to a high standard of quality.
This article has been viewed 4,783 times.
This wikiHow teaches you how to make your own antenna to improve the range of your FM receiver. Depending on your preferred frequency, you can use coax cable or speaker wire.
Thank you for reading this post How to DIY FM Antenna at Tnhelearning.edu.vn You can comment, see more related articles below and hope to help you with interesting information.
Related Search: