Home |
Search |
Today's Posts |
#9
|
|||
|
|||
The interior of the VHF TW antenna essentially is a 50 ohm center conductor
against the ID of the pylon. Beam tilt is done by the location of the slots on the pylon. The useful part of the elevation pattern of these antennas is made very smooth (no sharp nulls), and it produces fairly uniform fields near the ground from close to the tower base on out toward the radio horizon. The antenna was designed by RCA (Gibbsboro), and the design and production facilities for it were acquired from them by Dielectric when RCA folded in the mid-1980s. As for the effects of beam tilt, Figure 1 in paper #9 at http://rfry.com gives a graphical representation and discussion of what can be expected. P1-8-3246 (1950s). RF |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Questions -?- Considering a 'small' Shortwave Listener's (SWLs) Antenna | Shortwave | |||
Discone antenna plans | Antenna | |||
Understanding Shortwave Radio Listening and Antenna Design and Construction | Shortwave | |||
Outdoor Antenna and lack of intermod | Scanner | |||
Antenna down tilt in pattern | Antenna |