[Test-Equipment] GR 1800A VTVM

[Barry]

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.
> 
> ______________________________________________________________
> Test-Equipment mailing list
> Home: http://mailman.qth.net/mailman/listinfo/test-equipment
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Test-Equipment at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html