Re: [time-nuts] Vintage Quartz Crystal Manufacturing

Hi The CR-24/U is a *very* unusual crystal package. They had a tough time getting that one to work. Bob > On Nov 26, 2016, at 4:58 PM, Brooke Clarke wrote: > > Hi Adrisn: > > The BC-611 Walkie-Talkie is a crystal controlled 2-way radio where there are > a set of 4

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

Hi Adrisn: The BC-611 Walkie-Talkie is a crystal controlled 2-way radio where there are a set of 4 components that need to be changed whenever a different frequency is needed. This needs to be done in a workshop and not it the field. http://www.prc68.com/I/BC611.shtml Those 4 components are

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

ember 26, 2016 12:40 PM Subject: Re: [time-nuts] Vintage Quartz Crystal Manufacturing I bought some old crystals on ebay : http://www.ebay.co.uk/itm/15114483 Is anyone familiar with this style ? I don't think the quartz is visible in the glass section : I imagine that's just an insulator

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

, 2016 10:47 AM Subject: Re: [time-nuts] Vintage Quartz Crystal Manufacturing Not sure where you got the 80 K cps the seller mentions 80M(eter) and the items are clearly marked 3720 KCS 3760 KCS and 3780 KCS which would be in the 80 meter band. Paul. On 2016-11-26 11:15 AM, Bob Camp

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Adrian Godwin Sent: Saturday, November 26, 2016 7:41 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Vintage Quartz Crystal Manufacturing I bought some old crystals on ebay : http://www.ebay.co.uk/itm

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

The markings are actually 3720 k/cs, 3760 k/cs and 3780 k/cs. And I think it's probably for the wireless No 7 shown in http://www.wftw.nl/wsets.html. But you could be right - they may not be crystals. As for ebay .. yes, buyer beware. Though in this case I know the seller personally and while he

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

Actually, there is a 37 before the last digits, so they are 3720, 3760 and 3780 kHz. On Sat, Nov 26, 2016 at 7:15 AM, Bob Camp wrote: > Hi > > Welcome to eBay ….. > > I don’t believe those are crystals at all. If you take a look at the > markings on the parts > they are labeled

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

Not sure where you got the 80 K cps the seller mentions 80M(eter) and the items are clearly marked 3720 KCS 3760 KCS and 3780 KCS which would be in the 80 meter band. Paul. On 2016-11-26 11:15 AM, Bob Camp wrote: Hi Welcome to eBay ….. I don’t believe those are crystals at all. If you

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

Hi Welcome to eBay ….. I don’t believe those are crystals at all. If you take a look at the markings on the parts they are labeled “80 K cps”. In other words they are 80 KHz not 80M devices. Looking at the gap, if there is a crystal in there it’s not obvious that it’s big enough for 80 KHz.

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

Might be worth popping over to the GQRP mailing list and asking, there are a few enthusiasts there but wireless set no. 7 makes it sound like they were from a military radio. On 26 Nov 2016 13:00, "Adrian Godwin" wrote: > I bought some old crystals on ebay : > >

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

Alan G3NYK - Original Message - From: "Adrian Godwin" <artgod...@gmail.com> To: "Discussion of precise time and frequency measurement" <time-nuts@febo.com> Sent: Saturday, November 26, 2016 12:40 PM Subject: Re: [time-nuts] Vintage Quartz Crystal Ma

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

I bought some old crystals on ebay : http://www.ebay.co.uk/itm/15114483 Is anyone familiar with this style ? I don't think the quartz is visible in the glass section : I imagine that's just an insulator. I think the quartz is under a brass disc, with a sping to hold the disc down visible

[time-nuts] Vintage Quartz Crystal Manufacturing

Can you say "Mr Rogers' Neighborhood?" I knew you could... He (along with creepy Mr McFeelie) always ran segments on how some item was made. Geared towards pre-schoolers, but always worth watching. - Compare the Science channel's new "How Do They Do It" to the older

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

I watched the video when it first hit the list and found it interesting, as I would any complex industrial process. I've seen another crystal film that was available a few years ago as a file, but can't find the reference. The people who can't believe people ever worked under those conditions

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

On 9/25/2016 6:53 AM, Bob Camp wrote: Hi If you dropped in to a crystal manufacturing plant at any point over the next 30 years after that film was made, the styles of dress had changed. The crystal holders had changed. Most of the processes were still the same and some of the gear was

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

ency measurement < time-nuts@febo.com> Subject: Re: [time-nuts] Vintage Quartz Crystal Manufacturing Hi It’s interesting how much controversy that film stirred up. Literally 30 years after it was made, you could get a fairly excited conversation going about it at the FCS. On one side

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

ety hazards! Maybe I need to watch it again and not be so >> engrossed with the technical and working aspects? >>> >>> Thanks for your thoughts, and thank you to whomever linked it - I really >> enjoyed it! Any others I should see? >>> >>>

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

enjoyed it! Any others I should see? > > > > -Randal R > > (at CubeCentral) > > > > > > -Original Message- > > From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob > Camp > > Sent: Saturday, 24 September,

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

> (at CubeCentral) > > > -Original Message- > From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob Camp > Sent: Saturday, 24 September, 2016 09:53 > To: Discussion of precise time and frequency measurement <time-nuts@febo.com> >

[time-nuts] Vintage Quartz Crystal Manufacturing

Something tells me those crystals cost more than 10 cents... and were probably quite a bit worse than today's 10 cent Chinese processor crystals. Young'uns today have no idea how good they have it... and get off my lawn! I just sorted through a $10 (shipped from China) bag of 100 crystals

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

September, 2016 09:53 To: Discussion of precise time and frequency measurement <time-nuts@febo.com> Subject: Re: [time-nuts] Vintage Quartz Crystal Manufacturing Hi It’s interesting how much controversy that film stirred up. Literally 30 years after it was made, you could get a fairly exci

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

Hi It’s interesting how much controversy that film stirred up. Literally 30 years after it was made, you could get a fairly excited conversation going about it at the FCS. On one side were the people who felt it was a sweetheart deal to Reves at a point that other companies were being

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

In message , Bryan _ writes: >May find this old video interesting. >https://youtu.be/Iy23Us3nrX8 There are some very informative articles about quartz crystals in Bell Systems Technical Journal (on archive.org for instance) -- Poul-Henning

[time-nuts] Vintage Quartz Crystal Manufacturing

May find this old video interesting. https://youtu.be/Iy23Us3nrX8 -=Bryan=- ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and