During my satellite presentations, I will ask attendees to access their slide rules as we together derive satellite pass data manually, to graph each pass on equatorial graph paper …
“What - no one has a slide rule?” I will playfully chide them. “Didn’t the club president tell you all to have him for the presentation?”
Well, the Puget Sound Repeater Group just floored me: EIGHT SLIDE RULES were in the audience (three from one person, including a circular one and I recognized another as a Pickett Vector Model 300 - in its original leather case)!
A wonderful club. Sixty-two total years of supporting their region. Multiple daily nets that are well-attended (I know - I monitored ‘em via Echolink for a couple days). ARRL Special Service Club …
https://web.psrg.org/ https://web.psrg.org/
And very exciting for them: a 89-degree elevation pass of the ISS this evening during their 9PM Net!
I lost count … I think this was the 144th or 145th show presented. It is not getting old … as long as clubs want to know how to work the "easy” satellites, AMSAT will get the information to them!
Clint Bradford K6LCS AMSAT Ambassador ARRL Affiliate Club Coordinator, registered instructor (909) 999-SATS - voicemail
I used a slide rule when taking the Advanced license test. Passed with flying colors. Still have it, and it still works.
Greg KO6TH
On May 14, 2022 3:18:24 PM PDT, Clint Bradford via AMSAT-BB amsat-bb@amsat.org wrote:
During my satellite presentations, I will ask attendees to access their slide rules as we together derive satellite pass data manually, to graph each pass on equatorial graph paper …
“What - no one has a slide rule?” I will playfully chide them. “Didn’t the club president tell you all to have him for the presentation?”
Well, the Puget Sound Repeater Group just floored me: EIGHT SLIDE RULES were in the audience (three from one person, including a circular one and I recognized another as a Pickett Vector Model 300 - in its original leather case)!
A wonderful club. Sixty-two total years of supporting their region. Multiple daily nets that are well-attended (I know - I monitored ‘em via Echolink for a couple days). ARRL Special Service Club …
https://web.psrg.org/ https://web.psrg.org/
And very exciting for them: a 89-degree elevation pass of the ISS this evening during their 9PM Net!
I lost count … I think this was the 144th or 145th show presented. It is not getting old … as long as clubs want to know how to work the "easy” satellites, AMSAT will get the information to them!
Clint Bradford K6LCS AMSAT Ambassador ARRL Affiliate Club Coordinator, registered instructor (909) 999-SATS - voicemail
And their batteries last a lifetime!
Clint
On May 14, 2022, at 4:59 PM, Greg D ko6th.greg@gmail.com wrote:
I used a slide rule when taking the Advanced license test. Passed with flying colors. Still have it, and it still works.
Greg KO6TH
My son-in-law has a fully functional SIX FOOT slide rule...
George, KA3HSW
On 5/14/2022 6:59 PM, Greg D wrote:
I used a slide rule when taking the Advanced license test. Passed with flying colors. Still have it, and it still works.
Greg KO6TH
On May 14, 2022 3:18:24 PM PDT, Clint Bradford via AMSAT-BB amsat-bb@amsat.org wrote:
During my satellite presentations, I will ask attendees to access their slide rules as we together derive satellite pass data manually, to graph each pass on equatorial graph paper … “What - no one has a slide rule?” I will playfully chide them. “Didn’t the club president tell you all to have him for the presentation?” Well, the Puget Sound Repeater Group just floored me: EIGHT SLIDE RULES were in the audience (three from one person, including a circular one and I recognized another as a Pickett Vector Model 300 - in its original leather case)! A wonderful club. Sixty-two total years of supporting their region. Multiple daily nets that are well-attended (I know - I monitored ‘em via Echolink for a couple days). ARRL Special Service Club … https://web.psrg.org/ And very exciting for them: a 89-degree elevation pass of the ISS this evening during their 9PM Net! I lost count … I think this was the 144th or 145th show presented. It is not getting old … as long as clubs want to know how to work the "easy” satellites, AMSAT will get the information to them! Clint Bradford K6LCS AMSAT Ambassador ARRL Affiliate Club Coordinator, registered instructor (909) 999-SATS - voicemail
Just located mine: In my U. S. Naval Academy issued navigation kit: 1972!!
Jim
On 5/14/2022 23:58, George Henry wrote:
My son-in-law has a fully functional SIX FOOT slide rule...
George, KA3HSW
On 5/14/2022 6:59 PM, Greg D wrote:
I used a slide rule when taking the Advanced license test. Passed with flying colors. Still have it, and it still works.
Greg KO6TH
On May 14, 2022 3:18:24 PM PDT, Clint Bradford via AMSAT-BB amsat-bb@amsat.org wrote:
During my satellite presentations, I will ask attendees to access their slide rules as we together derive satellite pass data manually, to graph each pass on equatorial graph paper … “What - no one has a slide rule?” I will playfully chide them. “Didn’t the club president tell you all to have him for the presentation?” Well, the Puget Sound Repeater Group just floored me: EIGHT SLIDE RULES were in the audience (three from one person, including a circular one and I recognized another as a Pickett Vector Model 300 - in its original leather case)! A wonderful club. Sixty-two total years of supporting their region. Multiple daily nets that are well-attended (I know - I monitored ‘em via Echolink for a couple days). ARRL Special Service Club … https://web.psrg.org/ And very exciting for them: a 89-degree elevation pass of the ISS this evening during their 9PM Net! I lost count … I think this was the 144th or 145th show presented. It is not getting old … as long as clubs want to know how to work the "easy” satellites, AMSAT will get the information to them! Clint Bradford K6LCS AMSAT Ambassador ARRL Affiliate Club Coordinator, registered instructor (909) 999-SATS - voicemail
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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Hi Jim,
Same as you.
Interesting subject which trigger my interest back in my Slide Rule from my school days. It was on a shelve for some 45-48 years and I tried it today but could not do any simple calculations from it as I just lost the basic skills.
I will try to learn the trade back in the coming days as really interesting that with this simple tool we may (AND DID) do complex maths.
73
Jean Marc (3B8Du)
On May 15, 2022, at 8:38 PM, Jim Sanford wb4gcs@wb4gcs.org wrote:
Just located mine: In my U. S. Naval Academy issued navigation kit: 1972!!
Jim
On 5/14/2022 23:58, George Henry wrote:
My son-in-law has a fully functional SIX FOOT slide rule...
George, KA3HSW
On 5/14/2022 6:59 PM, Greg D wrote:
I used a slide rule when taking the Advanced license test. Passed with flying colors. Still have it, and it still works.
Greg KO6TH
On May 14, 2022 3:18:24 PM PDT, Clint Bradford via AMSAT-BB amsat-bb@amsat.org wrote:
During my satellite presentations, I will ask attendees to access their slide rules as we together derive satellite pass data manually, to graph each pass on equatorial graph paper …
“What - no one has a slide rule?” I will playfully chide them. “Didn’t the club president tell you all to have him for the presentation?”
Well, the Puget Sound Repeater Group just floored me: EIGHT SLIDE RULES were in the audience (three from one person, including a circular one and I recognized another as a Pickett Vector Model 300 - in its original leather case)!
A wonderful club. Sixty-two total years of supporting their region. Multiple daily nets that are well-attended (I know - I monitored ‘em via Echolink for a couple days). ARRL Special Service Club …
And very exciting for them: a 89-degree elevation pass of the ISS this evening during their 9PM Net!
I lost count … I think this was the 144th or 145th show presented. It is not getting old … as long as clubs want to know how to work the "easy” satellites, AMSAT will get the information to them!
Clint Bradford K6LCS AMSAT Ambassador ARRL Affiliate Club Coordinator, registered instructor (909) 999-SATS - voicemail
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
-- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
I found mine from xx-years ago and IT STILL WORKS!! de Bob K8BL
On Sunday, May 15, 2022, 12:39:01 PM EDT, Jim Sanford wb4gcs@wb4gcs.org wrote:
Just located mine: In my U. S. Naval Academy issued navigation kit: 1972!!
Jim
On 5/14/2022 23:58, George Henry wrote:
My son-in-law has a fully functional SIX FOOT slide rule...
George, KA3HSW
On 5/14/2022 6:59 PM, Greg D wrote:
I used a slide rule when taking the Advanced license test. Passed with flying colors. Still have it, and it still works.
Greg KO6TH
On May 14, 2022 3:18:24 PM PDT, Clint Bradford via AMSAT-BB amsat-bb@amsat.org wrote:
During my satellite presentations, I will ask attendees to access their slide rules as we together derive satellite pass data manually, to graph each pass on equatorial graph paper …
“What - no one has a slide rule?” I will playfully chide them. “Didn’t the club president tell you all to have him for the presentation?”
Well, the Puget Sound Repeater Group just floored me: EIGHT SLIDE RULES were in the audience (three from one person, including a circular one and I recognized another as a Pickett Vector Model 300 - in its original leather case)!
A wonderful club. Sixty-two total years of supporting their region. Multiple daily nets that are well-attended (I know - I monitored ‘em via Echolink for a couple days). ARRL Special Service Club …
And very exciting for them: a 89-degree elevation pass of the ISS this evening during their 9PM Net!
I lost count … I think this was the 144th or 145th show presented. It is not getting old … as long as clubs want to know how to work the "easy” satellites, AMSAT will get the information to them!
Clint Bradford K6LCS AMSAT Ambassador ARRL Affiliate Club Coordinator, registered instructor (909) 999-SATS - voicemail
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
…still got my Pickett N-500-ES. It’s on the office windowsill along with my abacus and Univac 1108 assembler code card. Miniature museum of computing. Also, somewhere, I have a couple of circular slide rules. A case of miniaturization. Moore’s Law *NOT*. :-) 73,Ray KN2K
Sent from the all new AOL app for iOS
On Sunday, May 15, 2022, 1:05 PM, Bob Liddy (K8BL) k8bl@ameritech.net wrote:
I found mine from xx-years ago and IT STILL WORKS!! de Bob K8BL
On Sunday, May 15, 2022, 12:39:01 PM EDT, Jim Sanford wb4gcs@wb4gcs.org wrote:
Just located mine: In my U. S. Naval Academy issued navigation kit: 1972!!
Jim
On 5/14/2022 23:58, George Henry wrote:
My son-in-law has a fully functional SIX FOOT slide rule...
George, KA3HSW
On 5/14/2022 6:59 PM, Greg D wrote:
I used a slide rule when taking the Advanced license test. Passed with flying colors. Still have it, and it still works.
Greg KO6TH
On May 14, 2022 3:18:24 PM PDT, Clint Bradford via AMSAT-BB amsat-bb@amsat.org wrote:
During my satellite presentations, I will ask attendees to access their slide rules as we together derive satellite pass data manually, to graph each pass on equatorial graph paper …
“What - no one has a slide rule?” I will playfully chide them. “Didn’t the club president tell you all to have him for the presentation?”
Well, the Puget Sound Repeater Group just floored me: EIGHT SLIDE RULES were in the audience (three from one person, including a circular one and I recognized another as a Pickett Vector Model 300 - in its original leather case)!
A wonderful club. Sixty-two total years of supporting their region. Multiple daily nets that are well-attended (I know - I monitored ‘em via Echolink for a couple days). ARRL Special Service Club …
And very exciting for them: a 89-degree elevation pass of the ISS this evening during their 9PM Net!
I lost count … I think this was the 144th or 145th show presented. It is not getting old … as long as clubs want to know how to work the "easy” satellites, AMSAT will get the information to them!
Clint Bradford K6LCS AMSAT Ambassador ARRL Affiliate Club Coordinator, registered instructor (909) 999-SATS - voicemail
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
My K&E Cooke Radio (version of a Polyphase Duplex Decitrig) sits in its leather case on my desk. I have the original manuals as well. Bought it new from the K&E store in NYC and used while in USCG in ‘70’s and taught at the Electronics Training Center. Marvelous how the batteries are lifetime guaranteed, furthermore the battery “self resurrects” when the rule is passed along to a descendent. My 35 YO son is better with it than I am, but he prefers his circular rule.
Jack Spitznagel – KD4IZ
Associate Editor – AMSAT News Service
AMSAT Ambassador
kd4iz@arrl.net
From: Bob Liddy (K8BL) k8bl@ameritech.net Sent: Sunday, May 15, 2022 12:54 To: amsat-bb@amsat.org Subject: [AMSAT-BB] Re: Slide Rules
I found mine from xx-years ago and IT STILL WORKS!!
de Bob K8BL
On Sunday, May 15, 2022, 12:39:01 PM EDT, Jim Sanford <wb4gcs@wb4gcs.org mailto:wb4gcs@wb4gcs.org > wrote:
Just located mine: In my U. S. Naval Academy issued navigation kit: 1972!!
Jim
On 5/14/2022 23:58, George Henry wrote:
My son-in-law has a fully functional SIX FOOT slide rule...
George, KA3HSW
On 5/14/2022 6:59 PM, Greg D wrote:
I used a slide rule when taking the Advanced license test. Passed with flying colors. Still have it, and it still works.
Greg KO6TH
On May 14, 2022 3:18:24 PM PDT, Clint Bradford via AMSAT-BB <amsat-bb@amsat.org mailto:amsat-bb@amsat.org > wrote:
During my satellite presentations, I will ask attendees to access their slide rules as we together derive satellite pass data manually, to graph each pass on equatorial graph paper …
“What - no one has a slide rule?” I will playfully chide them. “Didn’t the club president tell you all to have him for the presentation?”
Well, the Puget Sound Repeater Group just floored me: EIGHT SLIDE RULES were in the audience (three from one person, including a circular one and I recognized another as a Pickett Vector Model 300 - in its original leather case)!
A wonderful club. Sixty-two total years of supporting their region. Multiple daily nets that are well-attended (I know - I monitored ‘em via Echolink for a couple days). ARRL Special Service Club …
And very exciting for them: a 89-degree elevation pass of the ISS this evening during their 9PM Net!
I lost count … I think this was the 144th or 145th show presented. It is not getting old … as long as clubs want to know how to work the "easy” satellites, AMSAT will get the information to them!
Clint Bradford K6LCS AMSAT Ambassador ARRL Affiliate Club Coordinator, registered instructor (909) 999-SATS - voicemail
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Back in the early 1970s, I was the only student in my Associates Degree program who did NOT yet have an electronic calculator. I have to admit to the "entertainment factor", however, in watching all my classmates try to negotiate a seat near an electrical outlet in the classroom during tests. LCD displays had not yet been born and the old phosflorescent displays were hard on batteries. My slide-rule didn't care about batteries, of course :-)
Ahhhh the good old days.... I miss some - but not all - of them.
Pete - N4YOT ----- Original Message ----- From: kd4iz@frawg.org To: amsat-bb@amsat.org Sent: Sun, 15 May 2022 13:26:04 -0400 (EDT) Subject: [AMSAT-BB] Re: Slide Rules
My K&E Cooke Radio (version of a Polyphase Duplex Decitrig) sits in its leather case on my desk. I have the original manuals as well. Bought it new from the K&E store in NYC and used while in USCG in ‘70’s and taught at the Electronics Training Center. Marvelous how the batteries are lifetime guaranteed, furthermore the battery “self resurrects” when the rule is passed along to a descendent. My 35 YO son is better with it than I am, but he prefers his circular rule.
Jack Spitznagel – KD4IZ
Associate Editor – AMSAT News Service
AMSAT Ambassador
kd4iz@arrl.net
From: Bob Liddy (K8BL) k8bl@ameritech.net Sent: Sunday, May 15, 2022 12:54 To: amsat-bb@amsat.org Subject: [AMSAT-BB] Re: Slide Rules
I found mine from xx-years ago and IT STILL WORKS!!
de Bob K8BL
On Sunday, May 15, 2022, 12:39:01 PM EDT, Jim Sanford <wb4gcs@wb4gcs.org mailto:wb4gcs@wb4gcs.org > wrote:
Just located mine: In my U. S. Naval Academy issued navigation kit: 1972!!
Jim
On 5/14/2022 23:58, George Henry wrote:
My son-in-law has a fully functional SIX FOOT slide rule...
George, KA3HSW
On 5/14/2022 6:59 PM, Greg D wrote:
I used a slide rule when taking the Advanced license test. Passed with flying colors. Still have it, and it still works.
Greg KO6TH
On May 14, 2022 3:18:24 PM PDT, Clint Bradford via AMSAT-BB <amsat-bb@amsat.org mailto:amsat-bb@amsat.org > wrote:
During my satellite presentations, I will ask attendees to access their slide rules as we together derive satellite pass data manually, to graph each pass on equatorial graph paper …
“What - no one has a slide rule?” I will playfully chide them. “Didn’t the club president tell you all to have him for the presentation?”
Well, the Puget Sound Repeater Group just floored me: EIGHT SLIDE RULES were in the audience (three from one person, including a circular one and I recognized another as a Pickett Vector Model 300 - in its original leather case)!
A wonderful club. Sixty-two total years of supporting their region. Multiple daily nets that are well-attended (I know - I monitored ‘em via Echolink for a couple days). ARRL Special Service Club …
And very exciting for them: a 89-degree elevation pass of the ISS this evening during their 9PM Net!
I lost count … I think this was the 144th or 145th show presented. It is not getting old … as long as clubs want to know how to work the "easy” satellites, AMSAT will get the information to them!
Clint Bradford K6LCS AMSAT Ambassador ARRL Affiliate Club Coordinator, registered instructor (909) 999-SATS - voicemail
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
I'm reminded of the quote by an unnamed accountant "Engineers don't need computers. They have perfectly good slide rules".
73, Terry Osborne ZL2BAC
On 15/05/2022 10:18 am, Clint Bradford via AMSAT-BB wrote:
During my satellite presentations, I will ask attendees to access their slide rules as we together derive satellite pass data manually, to graph each pass on equatorial graph paper …
“What - no one has a slide rule?” I will playfully chide them. “Didn’t the club president tell you all to have him for the presentation?”
Well, the Puget Sound Repeater Group just floored me: EIGHT SLIDE RULES were in the audience (three from one person, including a circular one and I recognized another as a Pickett Vector Model 300 - in its original leather case)!
A wonderful club. Sixty-two total years of supporting their region. Multiple daily nets that are well-attended (I know - I monitored ‘em via Echolink for a couple days). ARRL Special Service Club …
And very exciting for them: a 89-degree elevation pass of the ISS this evening during their 9PM Net!
I lost count … I think this was the 144th or 145th show presented. It is not getting old … as long as clubs want to know how to work the "easy” satellites, AMSAT will get the information to them!
Clint Bradford K6LCS AMSAT Ambassador ARRL Affiliate Club Coordinator, registered instructor (909) 999-SATS - voicemail
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Thanks for doing all that outreach, Clint!
Your post has generated a lot of slide rule nostalgia. There were a number of analog computing devices developed for the aerospace industry.
One of the ones I'm fascinated with is the "Martin Space Rule and Handbook" and I gave a talk about it at the https://www.oughtred.org/meetings/Virtual_IM2020.shtml virtual meeting a couple of years ago. I suspect the orbital mechanics in that recorded video will be "old hat" to the crew on this listserv but some of you you might be interested in the history of the rule.
One of the really cool things, in my opinion, is the handbook that goes along with the slide rule. And the Computer History Museum was kind enough to scan their copy and make it available on this https://www.computerhistory.org/collections/catalog/102746940 page for all of us to enjoy. 73, Will
On 5/14/22 6:18 PM, Clint Bradford via AMSAT-BB wrote:
During my satellite presentations, I will ask attendees to access their slide rules as we together derive satellite pass data manually, to graph each pass on equatorial graph paper …
“What - no one has a slide rule?” I will playfully chide them. “Didn’t the club president tell you all to have him for the presentation?”
Well, the Puget Sound Repeater Group just floored me: EIGHT SLIDE RULES were in the audience (three from one person, including a circular one and I recognized another as a Pickett Vector Model 300 - in its original leather case)!
I still use the E6B flight computer when flying around in a Cessna or Piper. Many years ago while serving "haze gray and underway", I would use a Nautical Slide Rule. Both of these are circular slide rulers.
From: Will Marchant will@spaceflightsoftware.com Sent: Sunday, May 15, 2022 11:02 AM To: amsat-bb@amsat.org Subject: [AMSAT-BB] Re: Slide Rules
Thanks for doing all that outreach, Clint!
Your post has generated a lot of slide rule nostalgia. There were a number of analog computing devices developed for the aerospace industry.
One of the ones I'm fascinated with is the "Martin Space Rule and Handbook" and I gave a talk about it at the https://www.oughtred.org/meetings/Virtual_IM2020.shtmlhttps://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.oughtred.org%2Fmeetings%2FVirtual_IM2020.shtml&data=05%7C01%7C%7C368304ca93fe4a52736808da369d1e13%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637882345680730147%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=X9DEFVTmrlGcMrZ0J25VVPd1aj%2FjuZ94RKb5qFgoOkA%3D&reserved=0 virtual meeting a couple of years ago. I suspect the orbital mechanics in that recorded video will be "old hat" to the crew on this listserv but some of you you might be interested in the history of the rule.
One of the really cool things, in my opinion, is the handbook that goes along with the slide rule. And the Computer History Museum was kind enough to scan their copy and make it available on this https://www.computerhistory.org/collections/catalog/102746940https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.computerhistory.org%2Fcollections%2Fcatalog%2F102746940&data=05%7C01%7C%7C368304ca93fe4a52736808da369d1e13%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637882345680730147%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=eHLvJp4q44qr07cqJ5E7VaJ5WjM1PWwkFstuaoRjbuo%3D&reserved=0 page for all of us to enjoy. 73, Will On 5/14/22 6:18 PM, Clint Bradford via AMSAT-BB wrote: During my satellite presentations, I will ask attendees to access their slide rules as we together derive satellite pass data manually, to graph each pass on equatorial graph paper ...
"What - no one has a slide rule?" I will playfully chide them. "Didn't the club president tell you all to have him for the presentation?"
Well, the Puget Sound Repeater Group just floored me: EIGHT SLIDE RULES were in the audience (three from one person, including a circular one and I recognized another as a Pickett Vector Model 300 - in its original leather case)!
--
Will Marchant, KW4WZ
will@spaceflightsoftware.commailto:will@spaceflightsoftware.com
http://www.spaceflightsoftware.com/will/https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.spaceflightsoftware.com%2Fwill%2F&data=05%7C01%7C%7C368304ca93fe4a52736808da369d1e13%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637882345680730147%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=om5uWrTTLxzaOYWfKEKyUc6LIaIpKHuxDtPn7eaNtV8%3D&reserved=0
Clint,
There is a Facebook Group "Slide Rule Fan Club" https://www.facebook.com/groups/739023722850607 that links those of us who collect rules. Maybe we have already seen each other's posts there? ;-)
Regards, Peter VK1PE Canberra, Australian Capital Territory (VK1)
On Sun, 15 May 2022 at 08:19, Clint Bradford via AMSAT-BB < amsat-bb@amsat.org> wrote:
During my satellite presentations, I will ask attendees to access their slide rules as we together derive satellite pass data manually, to graph each pass on equatorial graph paper …
“What - no one has a slide rule?” I will playfully chide them. “Didn’t the club president tell you all to have him for the presentation?”
Well, the Puget Sound Repeater Group just floored me: EIGHT SLIDE RULES were in the audience (three from one person, including a circular one and I recognized another as a Pickett Vector Model 300 - in its original leather case)!
A wonderful club. Sixty-two total years of supporting their region. Multiple daily nets that are well-attended (I know - I monitored ‘em via Echolink for a couple days). ARRL Special Service Club …
And very exciting for them: a 89-degree elevation pass of the ISS this evening during their 9PM Net!
I lost count … I think this was the 144th or 145th show presented. It is not getting old … as long as clubs want to know how to work the "easy” satellites, AMSAT will get the information to them!
Clint Bradford K6LCS AMSAT Ambassador ARRL Affiliate Club Coordinator, registered instructor (909) 999-SATS - voicemail
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participants (13)
-
Bob Liddy (K8BL) -
Clint Bradford -
crohtun＠aol.com -
George Henry -
Greg D -
Jean Marc Momple -
Jim Sanford -
kd4iz＠frawg.org -
Peter Ellis -
Petespin＠windstream.net -
Thomas Talley -
Wendy and Terry Osborne -
Will Marchant