Re: Some interesting Nuvistor information
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When I read CEI my interest perked up. Do you have any documentation that you would share on either the CEI ST2045-2 or the Aydin Vector RLS-2000A receivers, particularly the AV since mine doesn't work and the construction is formidable for a hobbyist to work on.
To continue the thread: The 1968 Heathkit HW-17 2meter transceiver used Compactrons in the transmitter section and FETs in the front end.
73 Eric WB6KCN@sbcglobal.net
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of stevenhorii
Sent: Thursday, June 18, 2020 8:52 AM
Subject: Re: [TekScopes] Some interesting Nuvistor information
I have a series of various telemetry receivers - mostly DEI and Microdyne.
These are all solid-state as far as I know (the ones I've opened up). I
have a couple of oddball Microdyne 1100 series plug-ins (most came from Ron
Baublitz at US Surplus). These are VLF and a friend told me he thought they
might be for telephone interception. I think these came from one of the US
security agencies. The others are mostly S-band and were ex-NASA stuff. A
couple of the Microdyne mainframes in odd paint/anodize colors (all black
and one a dark blue). I think I have an old Nems-Clark somewhere - I'll
have to see if it has Nuvistors in it.
The other oddball - I think of them as odd since I was used to the classic
octal and the miniature 7- and 9-pin tubes - were the ones with more pins
and used in TV sets prior to the change to all solid-state. I don't recall
what these were called but they were fairly "squat" shaped and had more
pins than the miniature ones - maybe 11 or 12 pins? I found a photo of a
12-pin one here:
Have you ever seen these in anything other than vintage TVs? I don't think
Tek ever used them. Others on this list might know.
On Thu, Jun 18, 2020 at 10:02 AM Jeff Kruth via groups.io <kmec=
I have read several times in the thread that Nuvistors do not seem to fail