Date   

Re: Testmart

Craig Sawyers <c.sawyers@...>
 

I went looking for the old catalogues that were available on Testmart.
They seem to be gone (or well hidden).
They are now under "help" on the top rhs of the home page.

Craig


Re: spam

Jose V. Gavila <eb5agv@...>
 

My 0.02 Euro worth on this, as other Yahoo e-mail lists administrator for several years, is to manually approve subscriptions to the lists. That way, when spammers try to subscribe, they are nor allowed to get in (if e-mail address is not evidently an spammer but I am unsure about it, I write an e-mail and ask some clever question ;-) )

Only trouble with this is some extra work for the administrator but results are, so far, excellent. Some of you could recall the spammers intrussion in the European Boatanchors list some months ago. I have filtered about 20 or so spammers since then.

Best regards,

JOSE


Re: spam

Miroslav Pokorni
 

I am not speaking with any great experience about web groups, but spamming
here was not bad so far. The best thing was that you can spot it in subject
line. It is true that transporting all that e mail waists CPU cycles and
bandwidth, but is it a loss if bandwidth and CPU cycles are squandered
rather then go unused?

Regards

Miroslav Pokorni

----- Original Message -----
From: "Mark Anton" <heightstv@hotmail.com>
To: <TekScopes@yahoogroups.com>
Sent: Tuesday, November 25, 2003 9:46 PM
Subject: [TekScopes] spam






Mark Anton, Owner
Heights TV & VCR Service
3946 Central Ave. NE
Columbia Heights MN, 55421

Phone is 763-789-1767

(area code formerly 612)



Hey...this really inst too bad here.....try belonging to a group that the
moderator abandoned...:(
We really dont get all that much spam here..I finally figured out on the
other group to set myself to no mail...as seems like unsubscribing there
needed the moderator....was getting like 30 porn spam a day.

Mark

----Original Message Follows----
From: "Brian Goldsmith" <brian.goldsmith@echo1.com.au>
Reply-To: "Brian Goldsmith" <brian.goldsmith@echo1.com.au>
To: <TekScopes@yahoogroups.com>
Subject: Re: [TekScopes] Give It to me Nuaghty
Date: Wed, 26 Nov 2003 10:30:09 +1100


----- Original Message -----
From: "Dale H. Cook"

I've had enough, too much really. I sub to about 30 mailing lists, and
this
is the only one plagued by this junk, so I'm unsubbing.

**** I also have many subscriptions and am only plagued on this list.I
ask again,is the rubbish actually coming via the list or are we being
spoofed.If it is coming through the list,it is possible to stop it.
Brian Goldsmith.

_________________________________________________________________
Need a shot of Hank Williams or Patsy Cline? The classic country stars
are
always singing on MSN Radio Plus. Try one month free!
http://join.msn.com/?page=offers/premiumradio


Re: Audiophile "spam"

Miroslav Pokorni
 

My dear Albert,

You would be surprised if you were to examine all those 'double blind
tests'. In most cases, they turn out not to be blind, at all.

As for 'hope of scientifically evaluating assertions', the very quality of
flying in face of current knowledge does not prove validity of an assertion.
The cases when new thinking shows that a decease comes from bacteria rather
than sawdust are quite rare, at least in these days. I am not trying to say
that a pinnacle of knowledge has been reached, but some strides have been
made. Assertions made about some qualities of sound reproduced by tubes,
oxygen free copper, etc. are closer to cold fusion and gravity shields then
to anything rational.

Regards

Miroslav Pokorni

----- Original Message -----
From: "Albert LaFrance" <lafrance@att.net>
To: <Tekscopes@yahoogroups.com>
Sent: Tuesday, November 25, 2003 10:28 AM
Subject: [TekScopes] re: Audiophile "spam"


----- Original Message -----
From: "Miroslav Pokorni" <mpokorni2000@yahoo.com>
To: <jbarnes@aztec-net.com>; <Tekscopes@yahoogroups.com>; "Mark Anton"
<heightstv@hotmail.com>
Sent: Monday, November 24, 2003 5:24 PM
Subject: Re: [TekScopes] Audiophile "spam"


No John, you do not know the lingo. Any audiophile worth its salt will
never
say 'blind test', it is always 'double blind'.
<SNIP>

And he probably disparages such testing as a means of determining the
relative performance of any given item of audio equipment, thus banishing
any hope of scientifically evaluating his assertions!

Albert




spam

Mark Anton
 

Mark Anton, Owner
Heights TV & VCR Service
3946 Central Ave. NE
Columbia Heights MN, 55421

Phone is 763-789-1767

(area code formerly 612)



Hey...this really inst too bad here.....try belonging to a group that the moderator abandoned...:(
We really dont get all that much spam here..I finally figured out on the other group to set myself to no mail...as seems like unsubscribing there needed the moderator....was getting like 30 porn spam a day.

Mark

----Original Message Follows----
From: "Brian Goldsmith" <brian.goldsmith@echo1.com.au>
Reply-To: "Brian Goldsmith" <brian.goldsmith@echo1.com.au>
To: <TekScopes@yahoogroups.com>
Subject: Re: [TekScopes] Give It to me Nuaghty
Date: Wed, 26 Nov 2003 10:30:09 +1100

----- Original Message -----
From: "Dale H. Cook"

I've had enough, too much really. I sub to about 30 mailing lists, and
this
is the only one plagued by this junk, so I'm unsubbing.

**** I also have many subscriptions and am only plagued on this list.I
ask again,is the rubbish actually coming via the list or are we being
spoofed.If it is coming through the list,it is possible to stop it.
Brian Goldsmith.

_________________________________________________________________
Need a shot of Hank Williams or Patsy Cline? The classic country stars are always singing on MSN Radio Plus. Try one month free! http://join.msn.com/?page=offers/premiumradio


Testmart

Denis Cobley <denis.cobley@...>
 

Hi all
I went looking for the old catalogues that were available on Testmart.
They seem to be gone (or well hidden).
Anyone know if access has been removed ?
Pity if so as they were a good reference on older products from several manufacturers.
Regards
Denis Cobley


Re: Tek 551 with cart for sale on EBAY

Miroslav Pokorni
 

The price is high, I wonder whether there would be any taker. We'll see in
six days.

Regards

Miroslav Pokorni

----- Original Message -----
From: <jhwestfall@comcast.net>
To: <TekScopes@yahoogroups.com>
Sent: Tuesday, November 25, 2003 3:50 PM
Subject: [TekScopes] Tek 551 with cart for sale on EBAY


Check it out!!


Re: Tektronix model 604A X-Y monitor

Mark KAHRS <kahrs@...>
 

Looking at my manual, it looks like there is a "Line Selector Block" on
the power supply rectifier board. And I quote (page 5-2):

"To convert from 120v to 220 v (nominal) line voltage or vice versa,
remove the line selector block from the square pin connectors and replace
it with the unused block.

NOTE

The 120v block is coded brown and it connects the transformer primary
windings in parallel. The 220v block is color coded red and it connects
the primary windings in series.

The replaced block may be stored on the rectifier board in the unused
block position. Remove the line fuse from the fuse holder and replace it
with one having the correct rating."


Re: Give It to me Nuaghty

Brian Goldsmith <brian.goldsmith@...>
 

----- Original Message -----
From: "Greyhawk"


My Advice Is To Ignore It (Don't Let It Ruffle Your Feathers), And Use
The Delete Key. Remember If You Ignore It, It Will Go Away.

**** With all due respect it will NOT go away,that is just wistful
thinking!!!

Brian Goldsmith.


Tek 551 with cart for sale on EBAY

jhwestfall@...
 

Check it out!!


Re: Audiophile "spam"

kiyoinc@...
 

** Reply to note from <stevehogan@soundsteward.com> 25 Nov 2003 22:45:20 -0000

There are lots of viewpoints and similar to the audiophile slamming,
I've detected a reverse prejudice in the Ham Radio circles.

It's the belief that a modern, computerized, digital signal processing,
radio has a profound advantage over a 30/40 year old boat anchor.

In this case, the belief can be substantiated using state of the art
test equipment to compare the specifications. Modern radios have fully
agile IF filters, noise rejection, notch filters, and tricks that were
only appoximated using analog devices.

On another list, someone pointed out that a good analyzer would show
the unevenness of the old 6 pole crystal filters compare to the
square IF filter in a modern radio.

Then there's VFO accuracy and tightness of the AGC etc.

All true but the problem is that in real world usage, multi-skip
propagation, atmospheric noise, and so on, you can't hear the advantage
of the modern radio.

If you need a ten thousand dollar piece of equipment to show you the
difference, then you'll never hear it in an on-the-air trial.

Similar conflict of beliefs, old vice new.

== But ==

Here's the question for the list. Anyone have an 8072 tube, socket,
and heat sink? I believe these were used in land mobile radios. I
need a set up for a radio restoration.

Just so no one gets in a tizzy about being off-topic, Yes, I used my
TDS-210 and my 2215 to repair this radio. These worked quite nicely as
I was able to: 1) compare the waveforms produced by the two analog
VFO's and 2) get an approximation of the frequency.

As I dig deeper into the high power RF section, I'll depend more on the
2215 and less on the TDS-210.


Re: Give It to me Nuaghty

Brian Goldsmith <brian.goldsmith@...>
 

----- Original Message -----
From: "Dale H. Cook"

I've had enough, too much really. I sub to about 30 mailing lists, and
this
is the only one plagued by this junk, so I'm unsubbing.

**** I also have many subscriptions and am only plagued on this list.I
ask again,is the rubbish actually coming via the list or are we being
spoofed.If it is coming through the list,it is possible to stop it.
Brian Goldsmith.


Re: Give It to me Nuaghty

Dale H. Cook <radiotest@...>
 

I've had enough, too much really. I sub to about 30 mailing lists, and this is the only one plagued by this junk, so I'm unsubbing.

Dale H. Cook, Chief Engineer, WWWR Roanoke VA, WCQV Moneta VA, WKBA WZZI Vinton VA, WKPA WLNI WZZU Lynchburg VA, WMNA/WMNA-FM Gretna VA
The Star City Pages - Antique Radios & Test Equipment, Engineering, Computers: http://members.cox.net/dalehcook/starcity.shtml


Re: Tek 577 parts

ROLYNN PRECHTL K7DFW
 

I'm looking for the common (commercial) name of the two FETs (or MOSFET, I
don't know) thermally coupled, in the input stage of the Tektronix 577 D2
curve tracer. They are located in the PCB under the DUT socket.

=========================
Hello Marcello,

You're looking for a device in a 177 Standard Test Fixture (part of a 577
D2).

Q604A&B
151-1049-00
FET N Channel Si pair in a TO-71 case.
DN872 is the mfg nomenclature.

http://tinyurl.com/hetm was the only place found on the www.

Just got a 577 D2 and a 576 in during the past month and now use them as
much as the 575.

K7DFW

..._._


Spectrum Analyzers

Richard Oglebay <richardoglebay@...>
 

Hello anyone out there have a 1l5 plug in for the tek 500 series scope or any spectrum analyzer plug in for 500 series, it does not have to work but be in repairable condition,please contact me if you have one forsale or know of someone who does,thank you , richardoglebay@yahoo.com nov.23 2003


---------------------------------
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Protect your identity with Yahoo! Mail AddressGuard


Tek 577 parts

Marcello Pellerano
 

Hello all,
I'm looking for the common (commercial) name of the two FETs (or MOSFET, I don't know) thermally coupled, in the input stage of the Tektronix 577 D2 curve tracer.
They are located in the PCB under the DUT socket.
Thanks for all your hints
Best regards
Marcello


Give It to me Nuaghty

blindfoldmejen5 <blindfoldmejen5@...>
 

I need someone to bend me over
Smack my hottness a few times
Then Give it to me dirty

http://www.hotpersonalad.com/landing.asp?afl=YYHO


Re: Audiophile "spam"

Robert Morein <morepub@...>
 

Guys,
I'm a hard core audio debater, as my presence on rec.audio.opinion and rec.audio.tech will indicate. But out of respect for the people who want this list used for it's chartered purpose, I suggest we take it elsewhere.

See ya on rec.audio.opinion,
Bob Morein

----- Original Message -----
From: Albert LaFrance
To: Tekscopes@yahoogroups.com
Sent: Tuesday, November 25, 2003 1:28 PM
Subject: [TekScopes] re: Audiophile "spam"


----- Original Message -----
From: "Miroslav Pokorni" <mpokorni2000@yahoo.com>


Re: Audiophile "spam"

Albert LaFrance <lafrance@...>
 

----- Original Message -----
From: "Miroslav Pokorni" <mpokorni2000@yahoo.com>
To: <jbarnes@aztec-net.com>; <Tekscopes@yahoogroups.com>; "Mark Anton"
<heightstv@hotmail.com>
Sent: Monday, November 24, 2003 5:24 PM
Subject: Re: [TekScopes] Audiophile "spam"


No John, you do not know the lingo. Any audiophile worth its salt will
never
say 'blind test', it is always 'double blind'.
<SNIP>

And he probably disparages such testing as a means of determining the
relative performance of any given item of audio equipment, thus banishing
any hope of scientifically evaluating his assertions!

Albert


Re: Audiophile "spam"

tss_steve_990
 

ehsjr wrote:
So you think old or retired or deaf guys are worse than porno-spammers.
Nice.
Perhaps you might consider re-reading what I wrote.

The only thing more irritating to read on this board than the occasional
porno-spammer is the group of participants that find it necessary to spend
whole threads making jokes about audiophiles. An informative discussion re:
black beauty caps and the comment that Stan sold them to some audiophile
starts the whole yuk yuk about oxygen free copper yuk yuk etc. etc. I feel
like I'm on a board with a bunch of old retired deaf guys debating if there
there really is such a thing as sound.

My complaint (which I now regret) is against the practice of making jokes
about audiophiles. Perhaps I was not clear in my analogy which was really
not intended to disparage the age, the work status, or the hearing accuity
of anyone on this board. The point was that just because someone is not able
to perceive something himself (deaf) does not necessarily mean that it
doesn't exist (sound). My sincere apologies go out to every member of this
group who was hurt my my post. I should have been more careful and
sensitive.

Let me again clarify: There was nothing offensive whatsoever about Stan's
original post about unloading the black beauty caps on some
audiophile --Caveat Emptor (I would never consider using such a junky cap in
any piece of audio gear, but that's another story). My complaint was the
round of jokes that followed about the oxygen free wire etc. all of which
have been told many times before and seem to me to happen any time the word
"audiophile" appears in any post in any context. The reason those jokes
bugged me is because of the underlying viewpoint that everything
"audiophile" is bunk and unscientific and medicine show etc. Some of it
is-- some of it isn't.
I love a good joke too, the one about the vacuum-tube life support machine
had me doubled over laughing for 5 minutes. I will have to leave
instructions not to put me on one, though, in case it were to develop a
heater to cathode short and take me blissfully away.

ehsjr wrote:

Lets get to something more related to this group. I assume you are an
audiophile
with good to great hearing.
You assume wrong. Although my latest hearing test shows I have no
significant hearing losses other than those that naturally occur with age (I
am 51), I would not consider myself an "Audiophile". I was serious that
the only working "stereo" I own is my boombox. I do, however, design and
build and service and modify equipment that is used to make "audiophile"
quality recordings that my "audiophile" clients enjoy. (Cobbler's children
have no shoes.)
Many of my clients listen for a living. They own private high-end recording
studios and they work really hard to make recordings that are
state-of-the-art.
I can usually hear the differences that my circuit modifications make, but
they ALWAYS can.

What kind (and cost) of instrumentation
does it take
to detect distortion that cannot be detected by audiophiles with great
hearing?
And wht kind (and cost) of instrumentation can great hearing beat at
detecting
distortion?
I have read these two questions about 10 times and I still am not sure what
you are asking, but I will try to give some insight from my point of view.
I can tell a lot about a piece of analog gear by looking at its square wave
response on a scope. It shows low frequency rolloffs, high frequency
bandwith, overshoot and ringing of circuits and transformers, group delay
problems. Fixing the circuitry so it passes clean square waves is my first
start to making equipment sound better. Cost is that of a decent square
wave generator and a good scope.

Audio Precision System One or System 2 are the industry standard audio
measurement tools for thd, intermod distortion and a host of other
measurements. Cost depends on options, but figure between 10 and 20 thousand
dollars. I don't have one.

Some of the problems that people hear turn out to be dynamic problems like
overload recovery latch-ups, power amp current limiting weirdnesses and
other things that are really hard to find with any kind of conventional
measurements.

Jitter is a serious problem in Digital audio. Measuring and mimimizing it
goes a long way to making the sound better. There are various ways to
measure jitter and the people on this board have much more knowledge about
it than I do.

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