Th3jr manual

Slip on 6 tubing clamp, and tighten slightly. NOTE: The remaining elements will be installed in the same manner as above with the exception of using the trap designated for that particular element. Select the remaining director tube sections and install as before.

Select the beta match tombstone support insulators as shown in Figure 7. Select the beta shorting strap and install as shown in Figure 7. Tighten all hardware used with the beta match, shorting strap and driven element. Remeasure the dimensions between elements as shown in Figure 4. Tighten all hardware including the anchor screws at this time. A balun is not required for normal operation of this antenna.

However, there are three recommended feedpoint configurations, one of which utilizes the Hy-Gain Model BN balun for increased performance and convenience. The first feedline configuration involves connection of the coaxial feedline directly to the driven element. Other types of coaxial cable may be used if proper selection and careful assembly are utilized. The feedline should be stripped as shown in Figure 7.

Attach solder lugs not supplied to the center conductor and shield for easy connection to the driven element. Weatherproof all connections. The second feedpoint configuration involves construction and installation of a homemade RF choke. The RF choke will prevent RF from flowing on the outside of the coaxial shield.

This will block radiation from the coaxial feedline; thereby reducing the risk of TV1 and preventing radiation pattern degradation. The third feedpoint configuration involves using a 50 ohm balun to connect the feedline to the driven element.

Hy-Gain Model BN is recommended. A balun will act as an RF choke and will balance the flow of current on the driven element, resulting in a symmetrical radiation pattern. A balun will also have a coaxial connector, providing more convenience than a coax splice.

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