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Re: Duplexer modification


 

Thanks for the input guys.

I have been to the manufacturers web page, sadly no can length is given, I do not blame them for that.

My desire is to push the bottom of the can in to the correct length, I have made a small frame that will push and pull the bottom.


We were unable to tune one can and find a dip. So I have replaced the plunger with a threaded rod and?hope the increased adjustment and moving the bottom will get things going.


If it starts to tune then I will worry about the loop. Maybe someone has a picture of the correct loop?

If the one can starts to shape up I will start to abuse the rest of them and then work on the cable lengths.

I have been looking for a chart showing correct cable lengths also but this is a one step at a time project.


We have the modules in place but of course can only run Digital Data for now.


The frequencies involved are:

Rx?? 1271.600

Tx???1291.600

DD?? 1251.600


Just in case that becomes relevant to this conversation.


Any other comments are welcome.


Rex AJ4GC

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