[Hallicrafters] any who worked for Hali still on?

[Paul Kraemer]

What! You mean we aren't using chart recorders anymore!
Paul K0UYA
----- Original Message ----- 
From: "Robert Nickels" <w9ran at oneradio.net>
To: "Dan Cotsirilos K9DTC" <k9dtc at comcast.net>
Cc: "Hallicrafters list" <hallicrafters at mailman.qth.net>
Sent: Monday, June 02, 2008 9:53 AM
Subject: Re: [Hallicrafters] any who worked for Hali still on?


> Dan Cotsirilos K9DTC wrote:
>> I just got a very interesting item that has what looks like a 
>> Hallicrafters inventory sticker on it? The instrument is some type of amp 
>> meter made by Esterline-Angus. It is all black with a glass front that 
>> has a graph similar to a lie detector. Is this familiar to anyone?
>>
>>
> Dan,
>
> Esterline-Angus (now Esterline Technologies Inc, is still in business, 
> (NYSE ESL).  While primarily now an aerospace company, they made chart 
> recorders for years.  Companies like Hallicrafters would have used these 
> recorders for any number of test and measurement tasks, such as monitoring 
> circuit performance, temperature, frequency variation, etc over time. 
> The chart recorder will have a motor that can be adjusted to various 
> (slow) speeds to esablish the timebase for the recording, along with 
> signal conditioning and amplification to drive the pen that  traces the 
> recording on the moving paper.   Pretty much what we'd use a PC with a 
> data acquisition system or datalogger for today.
>
> 73, Bob W9RAN
> ______________________________________________________________
>