Date   

Re: Peter Keller's book Domestic Mail Problem Deliveries

stevenhorii
 

Dennis,

My Zip code is 19010 and the book was not in today's mail. Pennsylvania
seems to have been hard hit by the USPS slowdown. A package I sent
using USPS Priority Mail 2-day took over two weeks to get from here to
Springboro, OH (a suburb of Dayton). Some of our Christmas cards sent
during the early second week of December did not get to their destinations
until this week. So I am not surprised that my copy of the book has not
been delivered yet. It is not that the local post office is not trying - we
sometimes do not get our mail delivery until after 7:00 PM.

I will let you know when it arrives.

Thanks for the concern and posting the tracking numbers.

Steve Horii

On Thu, Jan 14, 2021 at 11:26 PM Dennis Tillman W7pF <dennis@ridesoft.com>
wrote:

I entered all 72 tracking numbers to see what was going on with domestic
book deliveries.
One package is awaiting another attempt at delivery to the recipient in
Fairfield OH.
These 15 of 72 packages I mailed have NOT arrived:

These six books are being held at the Seattle Regional Facility because, I
believe, of problems at the regional destination facilities since they are
all clustered by zip code:
Tracking #: 9549016335941002723294, Zip Code: 01460
Tracking #: 9549016335941002723478, Zip Code: 01510
Tracking #: 9549016335941002722846, Zip Code: 01742
Tracking #: 9549016335941002723218, Zip Code: 02090
Tracking #: 9549016335941002722921, Zip Code: 04605
Tracking #: 9549016335941002723485, Zip Code: 06057

These two books are also being held at the Seattle Regional Facility. I
don't know why.
Tracking #: 9549016335941002723034, Zip Code: 67212
Tracking #: 9549016335941002723140, Zip Code: 89511

These four books arrived at the Washington Distribution Center just
recently. Once again I suspect problems at the regional destination center
delayed their arrival because they are clustered by zip code:
Tracking #: 9549016335941002722877, Zip Code: 20169
Tracking #: 9549016335941002722990, Zip Code: 20613
Tracking #: 9549016335941002722839, Zip Code: 20872
Tracking #: 9549016335941002723416, Zip Code: 22406

Tracking #: 9549016335941002723232, Zip Code: 23236
January 14, 2021, 3:36 am Arrived at USPS Regional Destination Facility
RICHMOND VA DISTRIBUTION CENTER

Tracking #: 9549016335941002722860, Zip Code: 19808
January 9, 2021, 2:37 am Arrived at USPS Regional Facility WILMINGTON DE
DISTRIBUTION CENTER

Tracking #: 9549016335941002722853, Zip Code: 19010
January 8, 2021, 9:45 pm Departed USPS Regional Destination Facility
PHILADELPHIA PA NETWORK DISTRIBUTION CENTER
Note: There was no information on where it is at the present time or if it
is at the Bryn Mawr Post Office.

Tracking #: 9549016335941002723409, Zip Code: 45014
ALERT We attempted to deliver your package at 9:55 am on January 9, 2021 in
FAIRFIELD OH 45014 but could not access the delivery location.

Dennis Tillman W7pF











Re: Peter Keller's book Domestic Mail Problem Deliveries

Vince Vielhaber
 

On 01/14/2021 11:26 PM, Dennis Tillman W7pF wrote:

ALERT We attempted to deliver your package at 9:55 am on January 9, 2021 in
FAIRFIELD OH 45014 but could not access the delivery location.
Every time I see that around here it means the carrier missed it in the truck and didn't discover it wasn't delivered till (s)he got back to the post office.

Vince.
--
K8ZW http://www.metalworkingfun.com http://www.hamradio.fun


Re: CRT book by Keller

Harvey White
 

so if you make one, and it doesn't work?

is it a coketron zero?

Harvey

On 1/14/2021 11:05 PM, Roy Thistle wrote:
On Thu, Jan 14, 2021 at 12:20 PM, Tom Lee wrote:

If someone were to hand you a non-Coke bottle crt, would you ask, "Yeah, but what does it do?"
No... but if it was claimed to be an "operable" Coketron, I would. (... a topic which is apparently broached in subsequent posts.)





Peter Keller's book Domestic Mail Problem Deliveries

 

I entered all 72 tracking numbers to see what was going on with domestic
book deliveries.
One package is awaiting another attempt at delivery to the recipient in
Fairfield OH.
These 15 of 72 packages I mailed have NOT arrived:

These six books are being held at the Seattle Regional Facility because, I
believe, of problems at the regional destination facilities since they are
all clustered by zip code:
Tracking #: 9549016335941002723294, Zip Code: 01460
Tracking #: 9549016335941002723478, Zip Code: 01510
Tracking #: 9549016335941002722846, Zip Code: 01742
Tracking #: 9549016335941002723218, Zip Code: 02090
Tracking #: 9549016335941002722921, Zip Code: 04605
Tracking #: 9549016335941002723485, Zip Code: 06057

These two books are also being held at the Seattle Regional Facility. I
don't know why.
Tracking #: 9549016335941002723034, Zip Code: 67212
Tracking #: 9549016335941002723140, Zip Code: 89511

These four books arrived at the Washington Distribution Center just
recently. Once again I suspect problems at the regional destination center
delayed their arrival because they are clustered by zip code:
Tracking #: 9549016335941002722877, Zip Code: 20169
Tracking #: 9549016335941002722990, Zip Code: 20613
Tracking #: 9549016335941002722839, Zip Code: 20872
Tracking #: 9549016335941002723416, Zip Code: 22406

Tracking #: 9549016335941002723232, Zip Code: 23236
January 14, 2021, 3:36 am Arrived at USPS Regional Destination Facility
RICHMOND VA DISTRIBUTION CENTER

Tracking #: 9549016335941002722860, Zip Code: 19808
January 9, 2021, 2:37 am Arrived at USPS Regional Facility WILMINGTON DE
DISTRIBUTION CENTER

Tracking #: 9549016335941002722853, Zip Code: 19010
January 8, 2021, 9:45 pm Departed USPS Regional Destination Facility
PHILADELPHIA PA NETWORK DISTRIBUTION CENTER
Note: There was no information on where it is at the present time or if it
is at the Bryn Mawr Post Office.

Tracking #: 9549016335941002723409, Zip Code: 45014
ALERT We attempted to deliver your package at 9:55 am on January 9, 2021 in
FAIRFIELD OH 45014 but could not access the delivery location.

Dennis Tillman W7pF


Re: CRT book by Keller

Roy Thistle
 

On Thu, Jan 14, 2021 at 12:20 PM, Tom Lee wrote:


If someone were to hand you a non-Coke bottle crt, would you ask, "Yeah, but what does it do?"
No... but if it was claimed to be an "operable" Coketron, I would. (... a topic which is apparently broached in subsequent posts.)


Re: CRT book by Keller

Tom Lee
 

Not a dumb question at all! These were (supposed to be) working crts, so they pulled a vacuum. In the picture in Pete's book, though, there's no visible close-off nipple. I also don't see a getter, so the cathode didn't have a long life. But I would still want one (lit up and showing a trace, of course).

--Tom

--
Prof. Thomas H. Lee
Allen Ctr., Rm. 205
350 Jane Stanford Way
Stanford University
Stanford, CA 94305-4070
http://www-smirc.stanford.edu

On 1/14/2021 19:01, n4buq wrote:
Maybe a dumb question, but did they pull a vacuum on the coke bottle?

Thanks,
Barry - N4BUQ

----- Original Message -----

From: "Tom Lee" <tomlee@ee.stanford.edu>
To: TekScopes@groups.io
Sent: Thursday, January 14, 2021 6:32:05 PM
Subject: Re: [TekScopes] CRT book by Keller
The Coketron actually has no components inside the Coke bottle. It takes what
I believe is a 1EP1, sans screen, and mates it to a Coke bottle. It actually
has deflection plates (at least, that’s what I recall from visiting
Vintagetek, where they have one on display), so it has all the guts of an
electrostatically deflected scope crt.
I never saw one light up, though.
—Cheers,
Tom
Sent from my iThing, so please forgive typos and brevity.
On Jan 14, 2021, at 3:47 PM, Jeff Dutky <jeff.dutky@gmail.com> wrote:

Chuck,

That's what I figured. The neck of a Coke bottle is pretty narrow to get
much of a mechanism through.

-- Jef Dutky






Re: CRT book by Keller

n4buq
 

Maybe a dumb question, but did they pull a vacuum on the coke bottle?

Thanks,
Barry - N4BUQ

----- Original Message -----

From: "Tom Lee" <tomlee@ee.stanford.edu>
To: TekScopes@groups.io
Sent: Thursday, January 14, 2021 6:32:05 PM
Subject: Re: [TekScopes] CRT book by Keller
The Coketron actually has no components inside the Coke bottle. It takes what
I believe is a 1EP1, sans screen, and mates it to a Coke bottle. It actually
has deflection plates (at least, that’s what I recall from visiting
Vintagetek, where they have one on display), so it has all the guts of an
electrostatically deflected scope crt.
I never saw one light up, though.
—Cheers,
Tom
Sent from my iThing, so please forgive typos and brevity.
On Jan 14, 2021, at 3:47 PM, Jeff Dutky <jeff.dutky@gmail.com> wrote:

Chuck,

That's what I figured. The neck of a Coke bottle is pretty narrow to get
much of a mechanism through.

-- Jef Dutky





Re: Who has not received their book in the US by now?

 

FastGuido:
The reason I requested people to reply OFF-LIST was to avoid unnecessary (and useless) replies to TekScopes that serve no purpose for every one of our 8,000+ members who received it wasting their bandwidth and storage, and requiring them to take time to delete.

Please use some common sense and stop replying to the list when someone says to specifically contact them OFF-LIST.

Dennis Tillman W7pF

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of fastguido@charter.net
Sent: Thursday, January 14, 2021 4:37 PM
To: TekScopes@groups.io
Subject: Re: [TekScopes] Who has not received their book in the US by now?

Also sent off a email.







--
Dennis Tillman W7pF
TekScopes Moderator


Re: T912 storage oscilloscope - No 2.7 KV high Voltage

Trevor
 

Attilio-

Please note that the two diodes should be "Fast Recovery" (100ns) since the frequency is 50 kHz or so.

Trevor


Re: Who has not received their book in the US by now?

fastguido@...
 

Also sent off a email.


Re: 2465B trace and readout focus at different positions of focus knob

Mark Hatch
 

Thanks! I remember several years ago replacing the u400 hybrid because I had a distorted video (see https://www.youtube.com/watch?v=KGj_ssJxkEA&t=42s ), but I suspect I never ran through the calibration procedures fully after that.

Regards,

Mark


Re: CRT book by Keller

Tom Lee
 

The Coketron actually has no components inside the Coke bottle. It takes what I believe is a 1EP1, sans screen, and mates it to a Coke bottle. It actually has deflection plates (at least, that’s what I recall from visiting Vintagetek, where they have one on display), so it has all the guts of an electrostatically deflected scope crt.

I never saw one light up, though.

—Cheers,
Tom

Sent from my iThing, so please forgive typos and brevity.

On Jan 14, 2021, at 3:47 PM, Jeff Dutky <jeff.dutky@gmail.com> wrote:

Chuck,

That's what I figured. The neck of a Coke bottle is pretty narrow to get much of a mechanism through.

-- Jef Dutky





Re: CRT book by Keller

 

Chuck,

That's what I figured. The neck of a Coke bottle is pretty narrow to get much of a mechanism through.

-- Jef Dutky


Re: Who has not received their book in the US by now?

Stephen
 

E-mail sent offline.


Re: CRT book by Keller

Chuck Harris <cfharris@...>
 

Originally, the cathode ray tube, was a device to project
"cathode rays" at a phosphor screen... possibly with some
object (Maltese Cross) in between.

As I understand the description of the Coketron, it has something
like one of the ubiquitous 5UP1 gun assemblies in the neck, and
no internal deflection plates.

So, you should be able to focus the beam, and with a magnet do
experiments with magnetic deflection of said beam.

-Chuck Harris

Jeff Dutky wrote:

Tom,

I actually have the same question as Roy.

There are "CRTs" that merely illuminate the entire face of the tube, and others that have some limited amount of control over the illumination (e.g. the 6E5 tuning eye, or DM160 "Magic-Eye" indicator tubes). It is not clear from the description that the "coketron" was able to scan the beam, or whether it merely caused the end of the tube to illuminate like these Russian ILD3-K tubes (https://www.ebay.com/itm/ILD3-K-P590-ULTRARARE-VINTAGE-CRT-VFD-INDICATOR-TUBE-for-DIY-and-education/112031678404).

My copy of Peter Keller's book has not arrived, so I am speaking from a certain depth of ignorance.

-- Jeff Dutky






Re: Tektronix 492BP

 

I think option 8 remove the extended frequency. This unit may had that as the options tag has been erased as it is old probably 90s.


Re: 2465B trace and readout focus at different positions of focus knob

Chuck Harris <cfharris@...>
 

Yes, that is where the compromise that makes both
focus at about the same point happens.

Unfortunately, it is a compromise adjustment. The
readout is considered the designated loser in this
race.

-Chuck Harris

Mark Hatch wrote:

Hi,

Have a late model 2465B. Noticed today that the focus point for the readout is at one point on the focus knob. But it I also want to get an optimal focus for the trace, I need to turn the knob to a different position.

I guessing that I should first perform the 2465B CRT Adjustments (Grid Bias, High Drive Focus, and Edge Focus). Is this the right path here?

Focus knob is more or less in the center position when Readout is in focus and only a little off center with trace in focus.

Thanks

Mark






Re: Tektronix 492BP

 

May have been unit has been opened before, but works fine up to 21GHz. But what switches do you refer to on what board? Where can I find where the switches suppose to be?


Who has not received their book in the US by now?

 

If you have NOT received Peter Keller's book by now please contact me
off-list at dennis at ridesoft dot com and I will see if I can locate it for
you. Include your zip code in your email.

If you DID NOT receive Peter's book in the mail by TUESDAY EVENING please
let me know and include your zip code in the email.

Dennis Tillman W7pF


Re: CRT book by Keller

 

Tom,

I actually have the same question as Roy.

There are "CRTs" that merely illuminate the entire face of the tube, and others that have some limited amount of control over the illumination (e.g. the 6E5 tuning eye, or DM160 "Magic-Eye" indicator tubes). It is not clear from the description that the "coketron" was able to scan the beam, or whether it merely caused the end of the tube to illuminate like these Russian ILD3-K tubes (https://www.ebay.com/itm/ILD3-K-P590-ULTRARARE-VINTAGE-CRT-VFD-INDICATOR-TUBE-for-DIY-and-education/112031678404).

My copy of Peter Keller's book has not arrived, so I am speaking from a certain depth of ignorance.

-- Jeff Dutky

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