feedback AntennaLab 57-200-USB, Operator'S Manual, Page: 20 / 31

Chapter 2
BoufoobMbc!
OPERATOR’S MANUAL Installing
BoufoobMbc
57-200-USB 2-7
2.4.6 Assembly
Figure 2-4: Assembling the H-frame
The first stage in assembly is to attach the H-frame to the horizontal bar which is in turn
attached to the mounting pillar, as shown in Figure 2-4. The combiner, Figure 2-5, is then
attached to the free end of the horizontal bar (see also Figure 2-6).
4 coaxial sockets for
antenna elements
coaxial socket for
receiver connection
Figure 2-5: The Combiner
Assemble the log-periodic assemblies to the H-frame as indicated in Figure 2-3, making
sure that the four antennas are correctly phased; ie, that the individual log-periodics all
have the cables emerging at the top (or all at the bottom) and that each element points the
same way as the corresponding ones in the other log-periodics.