Re: [midatlanticretro] Re: MARCH board promotion!
Does anyone know if NAVELEX in Norfolk Naval Shipyard still has the equipment Henry Trank left them thirty years ago?
It relates to the only true parts of the "Philadelphia Experiment" garbage. Trank and company were doing work on studying the magnetic image of ships.
The rest of that is like the initials to my name.
--- On Thu, 9/22/11, Dave McGuire <Mcguire@...> wrote:
From: Dave McGuire <Mcguire@...>
Subject: Re: [midatlanticretro] Re: MARCH board promotion!
Date: Thursday, September 22, 2011, 11:31 AM
On 09/22/2011 01:29 AM, Jeff Jonas wrote:
>> Ahh, a common abbreviation for what
>> oscilloscopes used to be called:
>> Cathode Ray Oscillograph!
> I'm one of the last to handle an electro-mechanical oscillograph.
> It was NOT a chart recorder but a galvanometer
> moving a mirror to draw the pattern on a screen
> (similar to infra-red chart recorders of later years).
> It had 2 modes: vertical deflection from the input
> and NO horizontal sweep (the film motion was the time-base),
> or with a motor sweeping the beam horizontally.
> Sadly, I have only the wood case and front panel.
> I gave all the guts to a classmate to keep his running.
Oh MAN that sounds cool! I have a large collection of 75-125 year
old electronics test equipment (potentiometers [not the same as
"variable resistors"!], galvanometers, bridges, etc), in gorgeous wood
cases with lots of brass, etc. Most of them are functional. I have
nothing even close to the level of awesomeness as an E-M oscillograph
though. Chase down that classmate and make sure he keeps that unit in
good shape, they're incredibly rare.
Port Charlotte, FL