Jim,
You forgot to mention that you took out the Alpha Delta switch with your
Henry 8K amplifier. There are not to many switches that are built for
amateur service that can handle the 3CX3000A7 tube that comes in your 8K
amplifier.
You told this story on another reflector a while ago and if I remember
correctly you also took out a sensing unit for an RF Applications watt meter
that was rated for 3000 watts. I don't think the switch failure had anything
to do with high SWR.
Pat W1KA
----- Original Message -----
From: "Jim Reid" <jimr.reid@verizon.net>
To: <towertalk@contesting.com>
Sent: Monday, January 21, 2002 1:54 PM
Subject: [TowerTalk] Loss in Alpha Delta Switches ?
>
> Interesting to learn of the true loss in our connectors.
> Now, what about our AD switches. I have several:
> Delta 2's and 4's. I had occasion to open one following
> a switch failure.
>
> Was "shocked" to see that the contact was made when
> the EDGE of a thin strip of metal was pressed down
> against the flat surface of another strip. It was at such
> a contact I had experienced an arc or burning do to
> high swr, I guess. Anyway, the switch became NG.
>
> I can see why the "warranty" is void if you open the switch;
> no assurance at all that things will all fit back together
> properly when you "home assemble" it back together.
>
> Ever since, I have avoided the use of Alpha Deltas after
> my linear, but still use for rig switching ahead, etc.
>
> Was my experience unique; are these OK for use at power?
> I would like to use one to switch my 259B in/out to check the
> tuner settings after the linear occasionally.
>
> 73, Jim KH7M
>
>
>
>
> ________________________________________________________________________
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>
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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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