[time-nuts] Joining Antenna Cables (Again)

Bruce Griffiths bruce.griffiths at xtra.co.nz
Tue Mar 25 01:01:08 EDT 2008


Matthew Smith wrote:
> Hi Folks
>
> I know that we talked about extending antenna cables not that long ago, 
> but I don't think that we resolved *how* the cables should be joined 
> other than that the type of soldered splice I was proposing was not a 
> good thing.
>
> I've decided to run the indoor sections on RG6, since that's what I've 
> got.  I also have a couple of splitters with power pass-through that are 
> rated up to 1.8GHz - these have F connectors on them.
>
> As there don't appear to be any MCX to F or BNC or SMB to F or BNC 
> adapters available, I'm still puzzling how to hook this up.
>
> All I can think of is to have either:
>
> 1) A metal box with a bulkhead SMB connector on one end and a bulkhead 
> BNC or F connnector on the other or:
>
> 2) A metal box containing a PCB with the two appropriate connectors at 
> either end of the PCB, a single trace linking the two centres and the 
> rest of the board being ground.
>
> I know that I'm doing a mix'n'match of impedances, but comments from the 
> previous thread indicated to me that this shouldn't cause any real 
> problems, even if it is a 'dirty hack'.
>
> Cheers
>
> M
>
>   
Matt

Using a small length of low loss coax to connect between the 2 
connectors is virtually essential.
This will have lower loss than most PCB substrates.
The connectors in question can in turn be mounted on a plate or box wall.

Bruce



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