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Re: [TenTec] more oscilloscope questions

To: tentec@contesting.com
Subject: Re: [TenTec] more oscilloscope questions
From: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Reply-to: geraldj@weather.net, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sun, 11 Jul 2010 09:30:44 -0500
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
If its not Tek or HP and if its HP before the 1740, its not really a 
scope that works well and reliably. Yes there were pretenders but their 
products tended to be poor with poor bandwidths and lousy sweep 
triggering. The Tek 465 except for the delayed sweep switch and the HP 
1740 or 1742 have been reliable tools that work well and are FLAT to 
their bandwidth spec, not 3 dB down a the bandwidth spec. These are 200 
MHz and most logic glitches will be seen by them. A 30 MHz scope can 
miss glitches that logic can make. With my 475 on the bench I used it 
for DC through UHF measurements and set the VTVM on the back test 
equipment shelf. I quit using a meter with a GOOD DC scope available.

73, Jerry, K0CQ

On 7/11/2010 9:22 AM, Michael Goins wrote:
> What about the more uncommon brands? Outside of Tek, B&K, Sencore are a
> number of more high end and less expensive scopes. I am sort of "Joe
> average" ham - build some, design a little, and want to design more and be
> able to troubleshoot deeper.
> I don't think I need a 200 MHz all-the-bells-and-whistles scope, but I'm not
> sure a 50 MHz is the best choice either - at least based on the information
> I received from some of the knowledgeable guys here.
> What I have planned is some design, more troubleshooting - deeper trouble
> shooting.
> I can most certainly appreciate the guys who have and know how to use a
> cutting-edge scope at ultra MHz, but I'm wanting to also upgrade some other
> test gear and funds are limited. I'm not talking about cheaping out here,
> but judicious use of what money I have to do this with. I don't operate
> above 6 meters - and 99% of the time I'm in the 10-40 meter range. To keep
> costs as reasonable as possible, why wouldn't something like a 60 MHz of any
> respectable manufacturer do 99% of what I would ever need?
> Mike, k5wmg
> Pipe Creek, Texas
> Fast cars, slow boats, big dogs, old trucks, little radios, and summers off
> to write
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