[TowerTalk] So which is the best switch

[Mike]

The Diawa CS-201 is very good, but it is only 2 positions.
In some instances the contact wipers on this switch loosen
up where they attach to the output connector center contacts
and rotate out-of-plane. This is easily fixed with a dab of epoxy.
The isolation of this switch is around 80 dB at HF and it shorts
the unused output.

Unfortunately, I don't know what their 4 position switch
looks like inside. It could be a totally different design.

73 de Mike, W4EF................

----- Original Message -----
From: "Al Williams" <alwilliams@olywa.net>
To: "FireBrick" <w9ol@billnjudy.com>; "TowerTalk List"
<towertalk@contesting.com>
Sent: Monday, January 21, 2002 9:46 PM
Subject: Re: [TowerTalk] So which is the best switch


>
> Because my three position coax switch (MFJ 1702B  a/b/open) became a bit
> erratically open, I took it apart and am dismayed at what I see.
>
> First, It has a nice cam action that holds the open opposite input (a/b)
> contact
> about 1/4 inch open.  The contacts appear to be nice 1/8" round welded to
a
> springy metal about 1 1/4" long  with a fair amount of pressure on the
> contact.
>
>  However, the contacts were only making at the far tip of each i.e. the 1
> 1/4 inch
>  metal needed to be bent more at the far end in order to make full
contact.
>  Also, one contact was offset so that about 20% of the contact would miss
>  the center common contact post.
>
>  I assume that the design is good or adequate, but the workmanship was
>  poor.  In fairness, I don't know if it came from the factory that way as
it
> was
>  purchased at least second hand.
>
> k7puc
>
> ----- Original Message -----
> From: "FireBrick" <w9ol@billnjudy.com>
> To: "TowerTalk List" <towertalk@contesting.com>
> Sent: Tuesday, January 22, 2002 8:57 AM
> Subject: [TowerTalk] So which is the best switch
>
>
> >
> > Following the thread on antenna switches.
> > So for a inside the shack, multi coax/ant. switch. Who makes the
> > best/strongest/most reliable that is of a reasonable price for amateurs.
> >
>
>
>
> ________________________________________________________________________
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>




________________________________________________________________________
Where do you get ICE bandpass filters & beverage matching boxes?  The
same place that pays for the hosting of this list:  The eHam Store.
Order online at http://store.eham.net.
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