21-869.fm Page 5 Wednesday, October 13, 1999 11:50 AM

TUNING THE ANTENNA

If you are using your antenna at frequen- cies in the range of 25 to 30 MHz, you can tune the antenna using an standing- wave ratio (SWR) meter (not supplied) and the dual tuning rings on the bottom element.

Notes:

•If you are using your antenna at fre- quencies below 25 MHz, you will need an antenna tuner (not sup- plied) to tune it.

•The antenna's coaxial cable con- nector is the best place to check your antenna's SWR, but you can also check it at the radio's coax con- nection.

Follow these steps to tune the antenna.

1.Follow the instructions supplied with your SWR meter to adjust your antenna’s SWR to the lowest possi- ble value.

SWR values of 2.0:1 are generally acceptable, with readings of 1.5:1 or lower being more desirable.

2.With the antenna assembled and mounted, slowly move the tuning rings up as you check the SWR, until you reach your desired fre- quency.

3.If the center frequency is still too low, follow the steps under “Pre- Tuning the Antenna” on Page 3 to shorten the top element by 1/2 inch. Then check the SWR again. Keep shortening the top element until you reach the desired SWR.

4.Using an SWR meter, check the SWR at the top and bottom of the band. If the SWR is higher at the top of the band than at the bottom, raise both tuning rings counterclockwise at increments of 1/4 to 1/2 turns.

5.Repeat Step 4 until the SWR is as low as possible at both ends of the band.

6.When you have set the desired SWR, tighten the tuning rings against each other by simulta- neously turning the top ring down (clockwise) and the bottom ring up (counterclockwise) to lock them.

After you have properly installed and tuned your antenna, use a watt meter (not supplied) to test the amount of pow- er your transmitter is sending to your an- tenna. If you have properly tuned the antenna, the meter should show the transmitter’s maximum output power and the SWR meter should show very low re- flected power.

5

Page 4 Page 6
Page 5
Image 5
Samsung 21-869 manual Tuning the Antenna
Page 4 Page 6

21-869 specifications

The Samsung 21-869 is a cutting-edge device that has captured the attention of technology enthusiasts and consumers alike. This innovative product showcases Samsung's commitment to blending high performance with aesthetic design, making it a worthy addition to the company's esteemed lineup of electronic devices.

At the heart of the Samsung 21-869 is its powerful processor, which ensures seamless multitasking and smooth operation, whether you are gaming, streaming, or handling productivity tasks. The device is equipped with an advanced octa-core chip that provides exceptional speed and efficiency, allowing users to enjoy a high-performance experience without any lags or slowdowns.

One of the standout features of the Samsung 21-869 is its stunning display. The device boasts a large and vibrant AMOLED screen, which produces vivid colors and deep blacks, creating an immersive visual experience. With a high resolution, users can enjoy their favorite movies, games, and applications in impressive detail. The display also supports HDR technology, enhancing the viewing experience further by delivering greater contrast and brightness.

In terms of photography, the Samsung 21-869 is equipped with a formidable camera system. The rear camera features multiple lenses, including a wide-angle and a telephoto lens, which enable users to capture stunning images in various settings. The advanced image processing algorithms ensure that photos are sharp, vibrant, and true to life, making it a great option for photography enthusiasts. The front-facing camera is equally impressive, perfect for selfies and video calls.

Additionally, the Samsung 21-869 is designed with connectivity in mind. It supports the latest 5G technology, allowing for faster download and streaming speeds. Users can also connect to Wi-Fi networks easily, ensuring smooth browsing experiences and seamless access to online services.

Battery life is another highlight of the Samsung 21-869. With its efficient power management system, this device is designed to last throughout the day, even with heavy usage. Fast charging capabilities further enhance usability, enabling users to quickly recharge their devices and get back to their daily activities without long interruptions.

The Samsung 21-869 combines quality build materials with a sleek design, making it visually appealing and durable. Its customizable software experience, featuring the latest version of Samsung's user interface, adds to the overall user satisfaction, offering a range of personalization options and features that enhance functionality.

In conclusion, the Samsung 21-869 is a remarkable device that embodies Samsung's dedication to innovation, performance, and design excellence, catering to a wide array of user needs and preferences. Whether for work or entertainment, this device stands out in today’s competitive technology landscape.
Top Page Image Contents