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Author Topic: Arduino Controller for 6x2 Antenna Switch Request  (Read 784 times)
ZL1KFM
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Posts: 2




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« on: November 17, 2017, 12:11:43 AM »

G'Day fellow Hams,
I am searching for a design for a controller to control a 6x2 antenna switch.
The antenna switch has the capability to switch between 2 inputs and 6 outputs (antenna, in any combination).
Preferred option would be to have a Arduino control the selection, but not to have the other port to select an active connection that is already connected.
I would like to be able to use a graphical interface if possible.
Any help would be grateful.

Regards Kevin.
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KG4RUL
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Posts: 3064


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« Reply #1 on: November 19, 2017, 08:15:17 AM »

I can add part of the design.  MANY years ago I constructed an antenna switch for a USN project to allow 4 HF radios to share 2 antennas.  The switch was operated from the parallel port of an IBM PC and provides good isolation.  I have expanded the circuit and changed the nomenclature to instead switch 2 radios between 6 antennas.  Un-selected antennas are grounded.  

Here is the relay schematic:
http://www.kg4rul.info/AntennaSwitchRelays.jpg

A truth table for the relay operation:
http://www.kg4rul.info/RelayTruthTable.pdf
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ON5MF
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Posts: 137


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« Reply #2 on: November 19, 2017, 10:44:35 AM »

A few years ago I made one but it's not fully documented: http://www.on5mf.be/2013/04/12/my-current-project/

The rats nest you see is now in a box but it's still a rats nest :-)

I'm thinking of rebuilding it using a raspberry pi but I have way to many projects and an even bigger lack of time.
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Mostly (low power) rtty contesting using OQ6A, sometimes dxing using ON5MF
in november '14,'15,'16,'17 and '18 also OP5MF, special prefix in commemoration of 100 years WW 1

www.on5mf.be
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