ETS-Lindgren 3149 Hybrid Log Periodic and Bowtie (BiConiLog) - Manual (Page 19)

Mounting Instructions | 19
Using the Stinger Mount
The stinger mount provides on-axis rotation during 90 ° horizontal or vertical
polarization. The stinger enables you to mount the antenna directly to an
ETS-Lindgren 7-TR Tripod or mast.
If mounting the Model 3149 to a 7-TR, use the center rotate boom
(part# 108197) for rear-mount stinger-type antennas.
Additional hardware is required to use the stinger to mount the
Model 3149 to a mast. For information on ordering optional mounting
hardware, contact the ETS-Lindgren Sales Department.
Do not use the stinger to mount the Model 3149 onto a 4-TR tripod.
1. With the 108197 center rotate boom installed
on the 7-TR, thread the antenna feed or
receiving cable through the center of the
boom so that the connector for the antenna
emerges at the clamp end of the boom.
2. Attach the cable to the Type N connector on
the antenna.
3. Slide the cable and stinger into the clamp on the boom, carefully guiding the
cable out the other end.
4. When you reach the back of the balun box, align it with the boom
receptacle, and then slide the smaller portion of the balun box into the
boom. This will prevent rotation of the antenna unless the boom is being
polarized.
5. Tighten the clamp knob on the boom to secure the antenna into place.