[Test-Equipment] GR 1800A VTVM

[Barry]

Here's a picture of the sleeves and adapters I'm talking about:

https://n4buq.shutterfly.com/pictures/39

BTW, I realize now that the reason the inner sleeve will slide into the shorter sleeve is that one is slit (you can tell that in the picture).  Still not sure what the longer sleeve that is not slit is for.

Thanks,
Barry - N4BUQ

----- Original Message -----
> From: "Barry" <n4buq at knology.net>
> To: "Richard Knoppow" <1oldlens1 at ix.netcom.com>, "Discussion of Electronic Test Equipment"
> <test-equipment at mailman.qth.net>
> Sent: Thursday, December 19, 2013 2:32:48 PM
> Subject: Re: [Test-Equipment] GR 1800A VTVM
> 
> Okay, the cross-section diagram of the 774 coaxial connector makes
> sense.  Still unsure why there are two different threaded adapters -
> especially one where the slotted inner sleeve won't fit in it.
> 
> Wish I could attach a picture of what I have...
> 
> Thanks,
> Barry - N4BUQ
> 
> ----- Original Message -----
> > From: "Richard Knoppow" <1oldlens1 at ix.netcom.com>
> > To: "Discussion of Electronic Test Equipment"
> > <test-equipment at mailman.qth.net>, "Discussion of Electronic Test
> > Equipment" <test-equipment at mailman.qth.net>
> > Sent: Thursday, December 19, 2013 2:22:57 PM
> > Subject: Re: [Test-Equipment] GR 1800A VTVM
> > 
> > 
> > 
> > 
> > -----Original Message-----
> > >From: Barry <n4buq at knology.net>
> > >Sent: Dec 19, 2013 11:22 AM
> > >To: Discussion of Electronic Test Equipment
> > ><test-equipment at mailman.qth.net>
> > >Subject: Re: [Test-Equipment] GR 1800A VTVM
> > >
> > >Are there any examples or pictures of the 774 series on the net?
> > > I
> > >looked but, unless I don't recognize what I'm seeing, I didn't
> > >find
> > >any.
> > >
> > >I still don't quite know how these fittings are supposed to be
> > >assembled to make a different style connector.  The "double
> > >banana"
> > >arrangement is obvious enough, but don't understand how the other
> > >fittings are supposed to be used.
> > >
> > >Thanks again,
> > >Barry - N4BUQ
> > 
> > 
> >      See the description of an earlier UHF voltmeter at:
> > 
> > www.ietlabs.com/pdf/GR.../1946/GenRad_Experimenter_Oct_1946.pdf‎
> > 
> > This has a photo of the 774 fittings for the probe.  The 774 could
> > use a banana plug on the male side and also had a screw-in female
> > adaptor.
> >      The IET labs site has a complete collection of the
> > "General Radio Experimenter"    I have not searched them to see if
> > there was an article on the 774 connector but there certainly is on
> > the 874.  The 874 is hermaphroditic, that is, any two connectors
> > will mate while the 774 was a conventional male-female type.
> > 
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