[Boatanchors] Johnson directional coupler

Dave Brown tractorb at ihug.co.nz
Sun Feb 3 02:56:50 EST 2008


I'm pretty sure Al is correct but look up the matchbox tuners on BAMA 
or wherever. The colours will no doubt be standard across the range.
The KW one (and maybe others) had a separate coupler that was cabled 
back to and metered in the matchbox itself-I sold a stray coupler I 
had here ex an estate to a local a few months back.
Dave, ZL3FJ


----- Original Message ----- 
From: "Al Klase" <al at ar88.net>
To: "Brian A Clarke" <brianclarke01 at optusnet.com.au>
Cc: <boatanchors at mailman.qth.net>
Sent: Sunday, February 03, 2008 5:18 PM
Subject: Re: [Boatanchors] Johnson directional coupler


> Hi Brian,
>
> From memory:  Black is common, red is forward power, and white is 
> reflected power.  Both are DC outputs from germanium diodes 
> rectifying the sampled signals.
>
> Regards,
> Al
>
> Brian A Clarke wrote:
>> Hi folks,
>> What are the connections to the Johnson 259 - 37 coupler?
>> Mine has the usual SO-239 sockets at each end, a white 4 mm socket 
>> at one end and a black and a red 4 mm sockets at the other.
>> 73 de Brian, VK2GCE.
>> _______________________________________________
>>
>>
>>
>
> -- 
> Al Klase - N3FRQ Flemington, NJ http://www.skywaves.ar88.net/
>
> _______________________________________________
>
>
> -- 
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