[R-390] ME-26D/U

Sun, 18 May 2003 08:25:04 -0400

The probes should be interchangeable but I think there might be 1 volt 
difference in the filament voltage. As I remember , the plastic head was 
difficult to unscrew from the body, but it does dismantle. The input cap is 
a disk ceramic (without a coating) and it is easy to burn out by putting 
more than 300 volts AC across it. I put a miniature toggle switch on the 
meter front plate to turn off the probe filament when I use the meter for 
ohms or DC.
....Steve...KJ8L

>From: "Kurt" <[email protected]>
>To: "Michael Melland" <[email protected]>, <[email protected]>
>Subject: Re: [R-390] ME-26D/U
>Date: Sat, 17 May 2003 16:09:01 -0700
>
>Michael
>Please tell me how you made your new tip for the RF probe. Looking at the
>inside of mine, all of the metal parts seem to be potted and do not turn
>even though from the outside the tip appears to be threaded. You are 
>correct
>in that the D model has a different RF probe from the HP 410B. Is it
>possible to put a 410B probe on the ME-26D/U ? The two different rectifier
>tubes you mention do not appear to be interchangeable. Any thoughts on this
>?
>Thanks,
>Kurt
>----- Original Message -----
>From: "Michael Melland" <[email protected]>
>To: "Kurt" <[email protected]>; <[email protected]>
>Sent: Saturday, May 17, 2003 3:04 PM
>Subject: Re: [R-390] ME-26D/U
>
>
> > The ME-26D/U is a militarized version of the HP-410B.  I had one and the
> > probe tip was broken off too..... I just took that cap off and made a 
>new
> > probe tip and installed it.
> >
> > The manual is available on the net if you need one.  It serves as the
>maint
> > manual for both the 26 and 410B.  Hardest part of the meter to find will
>be
> > a probe diode tube.  It's a Eimac 2-01C and I've seen them listed for up
>to
> > $125 each if you can find one.  I have several nos .... I don't think 
>they
> > ever switched the 26 to the EA-53 like HP did.... that's even rarer and
>more
> > expensive.
> >
> > Mike, W9WIS
> >
> >
>
>
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