RX antenna - Bi-directional 2-wire beverage TWO coax output

This revision is from 2016/07/21 18:20. You can Restore it.

← Back to Index | ← Web page


rev.1 6/2016 by Jan OK2ZAW

Assembled KIT

The drill drawing

Paste the drawing on the box and fix it with some tape.

Drill 3 or 3,2mm holes for connector.

Drill 4mm holes for antenna screws.

Bend the screw heads into box

- use 6mm drill and do it slowly by hand

- drill 16mm hole for connector

Insert the screws

Insert stainless screws 4mm with

Mount the RF connector

insert connector and use steinless M3x8 and one M3x10 with grounding eye.

Drill the hole for the PCB holder

- mark the hole center by the PCB

- drill the 3 to 3,2mm hole.

Feeder PCB assembling

- LOAD unused coax line with right impedance (50 or 75 Ohm) !!! Never use it unloaded!

KIT parts example

Assembling

TRANSFORMERS winding - very important thing!

- example of 3,5 turns

- 2 and 6 turns

- 2 x 3,5 turns on secondar and 2 turns on primar

- example for terminator 9 turns and 6 turns, where 9 is two times 4,5 turns

- example two time 5 turns and 3

Connect PCB to the screws

- check the lable on the box and connect wires. There must A, B and GND connected to right screws on the box.

Common-mode coax choke

- choke measurements

Wind the coax

- Wind the coax as is on the picture, there should be 7 or 8 turns.

- fix it by one binder and use second one to fix choke to the PCB

Solder the coax

The Terminator

- Do right turns calculation or use table values.

Drill the hole for GND screw

Connect wires

Insert the PCB and fix it with the steinless M4 screw.

Connect the wires to the screws.

- Connect in the right order! A on PCB to A screw - check the lable on the box

Ready to use. Go to the field! :-)

Example of beverage direction switching

Example of beverage construction

  • Example of the construction details. Two wires with the distance of 10 to 13 cm.

- PC5M 4 direction design - source PC5M

- ZL3IX Bi-dir beverage notes


← Back to Index | ← Web page