[HomeBrew] RE: HomeBrew digest, Vol 4 #90 - 3 msgs

Tue, 7 Oct 2003 09:15:21 -0500

RE: SWR Meter

You might want to see if the wiring on the Forward/Reverse switch has been
flipped...

Bill

-----Original Message-----
From: [email protected]
[mailto:[email protected]]
Sent: Tuesday, October 07, 2003 3:06 AM
To: [email protected]
Subject: HomeBrew digest, Vol 4 #90 - 3 msgs

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Today's Topics:

   1. 1N34 diodes (Durwydd MacTara)
   2. Re: 1N34 diodes ([email protected])
   3. SWR Meter (Jim Miller)

--__--__--

Message: 1
From: "Durwydd MacTara" <[email protected]>
To: [email protected], [email protected]
Date: Mon, 06 Oct 2003 16:08:21 +0000
Subject: [HomeBrew] 1N34 diodes

I need a good source for a mess of these to sort into mached paiirs for a 
precision QRP wattmeter I want to build. Any suggestions as to possible 
vendors?

  "Communications" is a People skill, the rest is technology.
             Durwydd MacTara

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--__--__--

Message: 2
To: [email protected]
Date: Mon, 6 Oct 2003 11:19:43 -0500
Subject: Re: [HomeBrew] 1N34 diodes
From: [email protected]

I think any good germanium signal diode would work. Just don't use the
silicon diodes because of the higher voltage drop. There are even better
HP signal diodes you can buy in pairs but I don't think you need to go
that far. 

73 Kees K5BCQ

--__--__--

Message: 3
From: "Jim Miller" <[email protected]>
To: <[email protected]>
Date: Mon, 6 Oct 2003 22:43:00 -0500
Subject: [HomeBrew] SWR Meter

I have an SWR meter and I can't believe I can't fix it.  There is nothing in
it.  Two diodes, replaced them (with silicone signal diodes) did not fix it.
(Are these supposed to be germanium?)  Let's say your real swr is 1.7 - this
thing shows 7 or 8 to 1.  Similar results after the diode swap (not sure of
the actual measurement but it sure didn't fix it).  It doesn't have any
laminations that I can find cracked and I resoldered all the connections.
It is the old 4 1/2 inch Drake style meter.  I am about to give in to the
meter itself being bad but am still stuck with the idea that a lot of other
problems get blamed on "bad meter" and it is usually something else.

Your thoughts
Tnx es 73, de Jim KG0KP.

--__--__--

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