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Re: [Amps] Titan 425 keying issues

To: Amps group <>
Subject: Re: [Amps] Titan 425 keying issues
From: Bill Turner <>
Date: Mon, 16 Jul 2018 15:27:42 +0000
List-post: <>
------------ ORIGINAL MESSAGE ------------(may be snipped)

On Sun, 15 Jul 2018 10:41:00 -0700, Jim wrote:

> The only troubleshooting tool I needed was a Simpson 
>260 to check the semiconductors.


If I may make a suggestion:  A Simpson 260 was great in it's time but
not recommended for troubleshooting solid state equipment.  Its
voltage in the ohms mode is high enough to "turn on" a transistor or
diode and thus can cause errors when measuring components around  the
device.  I recommend a Fluke 87 or the equivalent. It's normal voltage
is low but it also has a "diode"  position which does apply higher
voltage when necessary.  

Expensive when bought new but many used ones are available. Be sure to
get a money back guarantee.

73, Bill W6WRT
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