I'm a big fan of Tektronix scopes. Have been through my share, including 465,
various 7603,23,33 etc. Problems with the old ones include non-obtainium ICs as
well as difficulty in repairing them, due to the use of so many small cables
with connectors, boards that are under other boards, and dedicated custom ICs.
I still have a couple of them running with my favorite 7L5 and 7L14 spectrum
analyzer plug-ins. I broke down and bought a TDS3000 series dual channel 300
MHz DSOs 5 years ago on Ebay. That scope has been incredible, the cats meow for
most uses. I hardly use the tube scopes anymore. Same is true at work, most of
them were salvaged some years ago.
At a recent hamfest, i saw knockoff DSOs of Tek made by Rigol of Beijing. I
wouldn't trust these for calibration and use at work, but wow, the prices were
incredible. Nearly all models up to 100 MHz with multiple channels for under a
kilobuck. I think the 100 Mhz can be had for about $400 or less. Thats only 3-4
times what a surplus 475 or 485 might be had for, and it not only works 100%
but has some warranty.
73
John
K5PRO
> Message: 3
> Date: Wed, 15 Aug 2012 13:36:56 -0700
> From: "Bill, W6WRT" <dezrat1242@yahoo.com>
> Subject: Re: [Amps] 87a will tell you, too
> To: AMPS <amps@contesting.com>
> Message-ID: <2v1o28he85g6n1onpajqg9bbul5vhbdvpi@4ax.com>
> Content-Type: text/plain; charset=us-ascii
>
> ORIGINAL MESSAGE:
> On Wed, 15 Aug 2012 12:07:03 -0500, you wrote:
>
> >that's way too high. You can get a Tek 475 for around $100 now. All
> >these great Tek scopes from the 1970s are a steal now. Slow one down,
> >turn up the trace and dim the lights and you'll see your overshoot.
> >Easy to measure once you get a v. / division for power fix.
>
> REPLY:
> Tek made some digital storage scopes in the '70's that would be excellent for
> examining overshoot. Look for a model 468.
>
> 73, Bill W6WRT
> ex-Tekie
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