[time-nuts] time-nuts Digest, Vol 41, Issue 78

[brice at weaponeer.com]

Re: precisoion AC Source.

Howdy Randy,
Audio amps can make a great cheap tinkering/testing tool.
You could buy one of those 120 lb Fluke Precision amps, same problem in any situation.. What are you feeding it?
I have a HP 3325A generator for tooling around, I could precicely control the amplitude so not to overdrive the line level inputs in a audio amp. 
The cal amps are complicated because they are more stable and accurate, etc... (avoid $200 ones that "look good")
I started out like you probably, Just remember this:
Never try to cal stuff with other unknown stuff, and it may already be quite close and messing around with it will only make it worse.
What are you up to? 
Cheers, Bill


>-----Original Message-----
>From: time-nuts-request at febo.com [mailto:time-nuts-request at febo.com]
>Sent: Tuesday, December 25, 2007 03:09 PM
>To: time-nuts at febo.com
>Subject: time-nuts Digest, Vol 41, Issue 78
>
>Send time-nuts mailing list submissions to
>	time-nuts at febo.com
>
>To subscribe or unsubscribe via the World Wide Web, visit
>	https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>or, via email, send a message with subject or body 'help' to
>	time-nuts-request at febo.com
>
>You can reach the person managing the list at
>	time-nuts-owner at febo.com
>
>When replying, please edit your Subject line so it is more specific
>than "Re: Contents of time-nuts digest..."
>
>
>Today's Topics:
>
> 1. Re: Needed: 58532A Antenna (Bruce Lane)
> 2. Ronald Held's main question (Max Robinson) (Ronald Held)
> 3. Re: Needed: 58532A Antenna (Tom Van Baak)
> 4. Precision AC source - build one ? (Randy Leifer)
> 5. Re: Needed: 58532A Antenna (Hal Murray)
> 6. Re: Needed: 58532A Antenna (Bruce Lane)
> 7. Re: Needed: 58532A Antenna (Rob Kimberley)
> 8. Re: Precision AC source - build one ? (WB6BNQ)
>
>
>----------------------------------------------------------------------
>
>Message: 1
>Date: Tue, 25 Dec 2007 08:59:52 -0800
>From: "Bruce Lane" <kyrrin at bluefeathertech.com>
>Subject: Re: [time-nuts] Needed: 58532A Antenna
>To: time-nuts at febo.com
>Message-ID: <200712250859520220.B19BAFF7 at 192.168.42.129>
>Content-Type: text/plain; charset="us-ascii"
>
>Good day,
>
>*********** REPLY SEPARATOR ***********
>
>On 25-Dec-07 at 02:43 Norman J McSweyn wrote:
>
>>Bruce,
>>Have you checked ebay?
>
>	That's the first place I checked, and I've had a standing search in place since November. No hits whatsoever.
>
>	Thanks.
>
>
>-=-=-=-=-=-=-=-=-=-=-=-
>Bruce Lane, Owner & Head Hardware Heavy,
>Blue Feather Technologies -- http://www.bluefeathertech.com
>kyrrin (at) bluefeathertech do/t c=o=m
>"If Salvador Dali had owned a computer, would it have been equipped with surreal ports?"
>
>
>
>
>------------------------------
>
>Message: 2
>Date: Tue, 25 Dec 2007 12:32:24 -0500
>From: "Ronald Held" <ronaldheld at gmail.com>
>Subject: [time-nuts] Ronald Held's main question (Max Robinson)
>To: time-nuts at febo.com
>Message-ID:
>	<9a86fb0e0712250932y5c48a749o77a0d871fd5a5880 at mail.gmail.com>
>Content-Type: text/plain; charset=ISO-8859-1
>
>Max:
> Thanks for the corrected link.
> Ronald
>
>
>---------- Forwarded message ----------
>From: <time-nuts-request at febo.com>
>Date: Dec 25, 2007 12:00 PM
>Subject: time-nuts Digest, Vol 41, Issue 77
>To:
>
>
>Send time-nuts mailing list submissions to
> time-nuts at febo.com
>
>To subscribe or unsubscribe via the World Wide Web, visit
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>or, via email, send a message with subject or body 'help' to
> time-nuts-request at febo.com
>
>You can reach the person managing the list at
> time-nuts-owner at febo.com
>
>When replying, please edit your Subject line so it is more specific
>than "Re: Contents of time-nuts digest..."
>
>
>Today's Topics:
>
> 1. Re: Ronald Held's main question (Max Robinson)
> 2. Re: Ronald Held's main question (Magnus Danielson)
> 3. Cs tube cost vs unit replacement (David Welch)
> 4. Needed: 58532A Antenna (Bruce Lane)
> 5. Re: Needed: 58532A Antenna (Norman J McSweyn)
> 6. Re: Efratom M100 oscillator connector (Robert E. Martinson)
> 7. Re: Efratom M100 oscillator connector (mlmccauley)
>
>
>----------------------------------------------------------------------
>
>Message: 1
>Date: Mon, 24 Dec 2007 15:03:43 -0600
>From: "Max Robinson" <max at maxsmusicplace.com>
>Subject: Re: [time-nuts] Ronald Held's main question
>To: "Discussion of precise time and frequency measurement"
> <time-nuts at febo.com>
>Message-ID: <011d01c84670$77920980$6401a8c0 at BACKROOM>
>Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
>Here's wishing you a marry time this Christmas and a happy leap second.
>
>Regards.
>
>Max. K 4 O D S.
>
>Email: max at maxsmusicplace.com
>
>Transistor site http://www.funwithtransistors.net
>Vacuum tube site: http://www.funwithtubes.net
>Music site: http://www.maxsmusicplace.com
>
>To subscribe to the fun with tubes group send an email to,
>funwithtubes-subscribe at yahoogroups.com
>
>----- Original Message -----
>From: <GandalfG8 at aol.com>
>To: <time-nuts at febo.com>
>Sent: Tuesday, December 18, 2007 3:40 AM
>Subject: Re: [time-nuts] Ronald Held's main question
>
>
>> In a message dated 18/12/2007 07:59:49 GMT Standard Time,
>> magnus at rubidium.dyndns.org writes:
>>
>> The link you get from their page
>> http://tf.nist.gov/timefreq/general/generalpubs.htm
>>
>> is however wrong, as it only gives the front document. Maybe one needs to
>> indicate to them that they should make a propper page for it. I have
>> downloaded
>> the full TN1337 before, so I'll be fine, but they should fix their
>> webpage.
>> ----------------------------------------
>>
>>
>> Magnus, many thanks for the pointer.
>>
>> The full document is here.......
>>
>> _http://www.boulder.nist.gov/timefreq/general/pdf/868.pdf_
>> (http://www.boulder.nist.gov/timefreq/general/pdf/868.pdf)
>> (http://tf.nist.gov/ofm/smallclock/References.htm)
>>
>> regards
>>
>> Nigel
>> GM8PZR
>>
>>
>>
>>
>>
>> _______________________________________________
>> time-nuts mailing list -- time-nuts at febo.com
>> To unsubscribe, go to
>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow the instructions there.
>>
>>
>>
>> --
>> No virus found in this incoming message.
>> Checked by AVG Free Edition.
>> Version: 7.5.503 / Virus Database: 269.17.4/1189 - Release Date:
>> 12/18/2007 9:40 PM
>>
>>
>
>
>
>
>------------------------------
>
>Message: 2
>Date: Mon, 24 Dec 2007 22:24:18 +0100 (CET)
>From: Magnus Danielson <magnus at rubidium.dyndns.org>
>Subject: Re: [time-nuts] Ronald Held's main question
>To: time-nuts at febo.com, max at maxsmusicplace.com
>Message-ID: <20071224.222418.1063024433.cfmd at bredband.net>
>Content-Type: Text/Plain; charset=us-ascii
>
>From: "Max Robinson" <max at maxsmusicplace.com>
>Subject: Re: [time-nuts] Ronald Held's main question
>Date: Mon, 24 Dec 2007 15:03:43 -0600
>Message-ID: <011d01c84670$77920980$6401a8c0 at BACKROOM>
>
>Max,
>
>> Here's wishing you a marry time this Christmas and a happy leap second.
>
>Um, no leap second is scheduled for this new years eve.
>
>http://hpiers.obspm.fr/iers/bul/bulc/bulletinc.dat
>
>Maybe it would be time for another leap-second at next new-years eve.
>
>God Yule, Merry Christmas and Happy New Year!
>
>Cheers,
>Magnus
>
>
>
>------------------------------
>
>Message: 3
>Date: Mon, 24 Dec 2007 17:18:01 -0600
>From: "David Welch" <aceamusements at mchsi.com>
>Subject: [time-nuts] Cs tube cost vs unit replacement
>To: "Discussion of precise time and frequency measurement"
> <time-nuts at febo.com>
>Message-ID: <001e01c84683$3a987830$7110ca0c at win127r2p7m70t>
>Content-Type: text/plain; charset="iso-8859-1"
>
>Does anyone know how much a decent 5071a goes for these days..I hear the tube
>new is about 15k..would 27K be a good price for a new unit?
>
>I think upgrading from 5061b to 5071a might be better investment due to the high
>cost of a new tube..
>
>
>------------------------------
>
>Message: 4
>Date: Mon, 24 Dec 2007 22:18:59 -0800
>From: "Bruce Lane" <kyrrin at bluefeathertech.com>
>Subject: [time-nuts] Needed: 58532A Antenna
>To: time-nuts at febo.com
>Message-ID: <200712242218590666.AF50EE8E at 192.168.42.129>
>Content-Type: text/plain; charset="ISO-8859-1"
>
>Fellow clock-tickers,
>
> I have need of an HP/Symmetricom 58532A reference antenna. It
>doesn't have to be in pristine shape as long as it's functional and
>'reasonably' priced. For purposes of this argument, 'reasonably' means
>anything significantly less than the $130 that Symmetricom wants for a
>new one.
>
> Granted, that is not an unreasonable price to pay for a
>good-quality antenna, and if it comes down to it I will order one from
>them. However, I feel compelled to exhaust all other possibilities
>first. ;-)
>
> Please drop me a note if you've got one available. Thanks much.
>
>
>-=-=-=-=-=-=-=-=-=-=-=-
>Bruce Lane, Owner & Head Hardware Heavy,
>Blue Feather Technologies -- http://www.bluefeathertech.com
>kyrrin (at) bluefeathertech do/t c=o=m
>"If Salvador Dali had owned a computer, would it have been equipped
>with surreal ports?"
>
>
>
>
>------------------------------
>
>Message: 5
>Date: Tue, 25 Dec 2007 02:43:08 -0500
>From: Norman J McSweyn <normn3ykf at stny.rr.com>
>Subject: Re: [time-nuts] Needed: 58532A Antenna
>To: Discussion of precise time and frequency measurement
> <time-nuts at febo.com>
>Message-ID: <4770B48C.1090105 at stny.rr.com>
>Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
>Bruce,
>Have you checked ebay?
>Merry Christmas,
>Norm n3ykf
>
>
>
>------------------------------
>
>Message: 6
>Date: Tue, 25 Dec 2007 02:49:08 -0500
>From: "Robert E. Martinson" <REMartinson at rcn.com>
>Subject: Re: [time-nuts] Efratom M100 oscillator connector
>To: "'Robert E. Martinson'" <REMartinson at rcn.com>, "'Discussion of
> precise time and frequency measurement'" <time-nuts at febo.com>
>Message-ID: <000501c846ca$a1b87e60$6400a8c0 at PentD>
>Content-Type: text/plain; charset="us-ascii"
>
>A connector on Ebay now, see: 250200168413.
>
>Kind of pricey with no backshell or screws.
>
>
>Bob
>
>
>
>-----Original Message-----
>From: Robert E. Martinson [mailto:REMartinson at rcn.com]
>Sent: Sunday, December 23, 2007 1:34 AM
>To: 'Discussion of precise time and frequency measurement'
>Subject: RE: [time-nuts] Efratom M100 oscillator connector
>
>
>HI Mike,
>
>I have 2 FRK's here, both use a connector made by Positronic, it's a "SGM
>20".
>See http://www.connectpositronic.com/downloads/pdf/C008RevC_HighDenRec.pdf
>
>The Positronic site (for Australia) is:
>
>Australia (Commercial & Industrial & selected Military Accounts)
>Walcom Pty. Ltd
>118 Pryor Road
>Ourimbah, NSW 2258 Australia
>Phone: + 61 2 4362 3477
>Fax: + 61 2 4362 3293
>www.walcom.com.au
>Contact: Mark Walpole
>mark at walcom.com.au
>
>
>I bought one complete, used connector assembly on Ebay a while ago for like
>$10. The P/N on the backshell is stamped "M28748/8-D10L1A".
>
>
>
>Regards,
>Bob Martinson, N1VQR
>
>
>
>-----Original Message-----
>From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>Behalf Of mlmccauley
>Sent: Saturday, December 22, 2007 10:20 PM
>To: time-nuts at febo.com
>Subject: [time-nuts] Efratom M100 oscillator connector
>
>
>
>I got a really good deal on a used Ball Efratom M-100 oscillator, and I
>am unable to find a power connector for it. The manual for the unit
>states that it is a part number
>
>M28748-/8-D10LIA
>
>Evidently the M28748 series of connectors are fairly widely used in
>military equipment, but a search for that particular p/n didn't turn up
>anything, none of the parts houses that I deal with handle mil type
>connectors, and I really doubt of I would have any luck at all as an
>electronics hobbyist calling up a defense contractor trying to buy one
>connector (to say nothing of what they would want for it even if they
>agreed to sell one to me...).
>
>The connector is rectangular and has three rows of pins, seven in the
>two outer rows and six in the center.
>
>Anyone have any ideas?
>
>Thanks in advance,
>
>Mike
>
>
>_______________________________________________
>time-nuts mailing list -- time-nuts at febo.com
>To unsubscribe, go to
>https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>and follow the instructions there.
>
>
>
>------------------------------
>
>Message: 7
>Date: Tue, 25 Dec 2007 02:10:58 -0600
>From: mlmccauley <mlmccauley at tx.rr.com>
>Subject: Re: [time-nuts] Efratom M100 oscillator connector
>To: Discussion of precise time and frequency measurement
> <time-nuts at febo.com>
>Message-ID: <4770BB12.403 at tx.rr.com>
>Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
>Robert E. Martinson wrote:
>> A connector on Ebay now, see: 250200168413.
>>
>> Kind of pricey with no backshell or screws.
>>
>>
>> Bob
>>
>>
>>
>>
>
>Thanks for the additional tip, Bob. Based on my post, I got hooked up
>with a guy on the list that had one available.
>
>Never the less, thanks again.
>
>Mike
>
>
>
>
>
>------------------------------
>
>_______________________________________________
>time-nuts mailing list
>time-nuts at febo.com
>https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>
>End of time-nuts Digest, Vol 41, Issue 77
>*****************************************
>
>
>
>------------------------------
>
>Message: 3
>Date: Tue, 25 Dec 2007 10:19:34 -0800
>From: "Tom Van Baak" <tvb at LeapSecond.com>
>Subject: Re: [time-nuts] Needed: 58532A Antenna
>To: "Discussion of precise time and frequency measurement"
>	<time-nuts at febo.com>
>Message-ID: <001d01c84722$b3c15070$0800a8c0 at pc52>
>Content-Type: text/plain; format=flowed; charset="Windows-1252";
>	reply-type=original
>
>> Fellow clock-tickers,
>>
>> I have need of an HP/Symmetricom 58532A reference antenna. It doesn't have to be in pristine shape as long as it's 
>> functional and 'reasonably' priced. For purposes of this argument, 'reasonably' means anything significantly less than 
>> the $130 that Symmetricom wants for a new one.
>>
>> Granted, that is not an unreasonable price to pay for a good-quality antenna, and if it comes down to it I will order 
>> one from them. However, I feel compelled to exhaust all other possibilities first. ;-)
>>
>> Please drop me a note if you've got one available. Thanks much.
>
>Bruce,
>
>I have extras, NIB. Send me your mailing address off-line.
>Merry Christmas,
>/tvb 
>
>
>
>
>
>------------------------------
>
>Message: 4
>Date: Tue, 25 Dec 2007 11:21:41 -0800 (PST)
>From: Randy Leifer <redrabbitlosangeles at yahoo.com>
>Subject: [time-nuts] Precision AC source - build one ?
>To: time-nuts at febo.com
>Message-ID: <61107.1673.qm at web35513.mail.mud.yahoo.com>
>Content-Type: text/plain; charset=iso-8859-1
>
>Hello everyone, Merry Holidays.
>
>I am young at test gear knowledge, keep this in mind.
> I'd like to calibrate some older test gear, and one
>of the required items that I don't have, is an AC
>voltage source -- w/adjustable volts and frequency.
>
>Ebay items cost $200-$2000.
>But I figure I can send an adjustable sine wave into a
>"power amplifier", to get what I need......and an
>analog AC voltmeter, to read/check the voltage on the
>amp's output.
>Does this sound correct?
>Are there other ways ?
>
>thanks,
>=Randy=
>
> 
>
>
> ____________________________________________________________________________________
>Be a better friend, newshound, and 
>know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ 
>
>
>
>
>------------------------------
>
>Message: 5
>Date: Tue, 25 Dec 2007 11:44:51 -0800
>From: Hal Murray <hmurray at megapathdsl.net>
>Subject: Re: [time-nuts] Needed: 58532A Antenna
>To: Discussion of precise time and frequency measurement
>	<time-nuts at febo.com>
>Message-ID: <20071225194452.228C5BE33 at ip-64-139-1-69.sjc.megapath.net>
>Content-Type: text/plain; charset=us-ascii
>
>Why do you need the 58532A?
>
>If you like HP, there are a couple of 58504As on eBay. There are a zillion 
>other GPS antennas on eBay, a few have similar dimensions.
>
>Does anybody have a summary of which ones work well? Are newer units 
>significantly better? ...
>
>
>-- 
>These are my opinions, not necessarily my employer's. I hate spam.
>
>
>
>
>
>
>------------------------------
>
>Message: 6
>Date: Tue, 25 Dec 2007 11:49:56 -0800
>From: "Bruce Lane" <kyrrin at bluefeathertech.com>
>Subject: Re: [time-nuts] Needed: 58532A Antenna
>To: time-nuts at febo.com
>Message-ID: <200712251149560604.B23765B8 at 192.168.42.129>
>Content-Type: text/plain; charset="us-ascii"
>
>Hi, Hal,
>
>*********** REPLY SEPARATOR ***********
>
>On 25-Dec-07 at 11:44 Hal Murray wrote:
>
>>Why do you need the 58532A?
>
>	"Prefer" would be a better word. No worries - Tom just popped into my mailbox with word that he has extras, and he's local to me. Problem solved.
>
>	There are a couple of reasons I prefer the 58532's. First is the design -- They fit PERFECTLY on top of the pipe of a standard DirecTV/Dishnet satellite mount. Also, the conical shape helps greatly to shed snow and ice, which is an important consideration in my area (Pacific Northwest).
>
>	Second: Performance. The two I currently have operating do an outstanding job, even with limited sky view.
>
>	Thanks much.
>
>
>-=-=-=-=-=-=-=-=-=-=-=-
>Bruce Lane, Owner & Head Hardware Heavy,
>Blue Feather Technologies -- http://www.bluefeathertech.com
>kyrrin (at) bluefeathertech do/t c=o=m
>"If Salvador Dali had owned a computer, would it have been equipped with surreal ports?"
>
>
>
>
>------------------------------
>
>Message: 7
>Date: Tue, 25 Dec 2007 20:04:53 -0000
>From: "Rob Kimberley" <rk at timing-consultants.com>
>Subject: Re: [time-nuts] Needed: 58532A Antenna
>To: "Discussion of precise time and frequency measurement"
>	<time-nuts at febo.com>
>Message-ID: <000c01c84731$6b833670$0402a8c0 at quaddra>
>Content-Type: text/plain; format=flowed; charset="iso-8859-1";
>	reply-type=original
>
>Try the Panasonic/Matsushita VIC 100. Excellent all round antenna.
>http://pewa.panasonic.com/emp/products/gps_pdf/vic100_2004.pdf
>Rob Kimberley
>
>
>----- Original Message ----- 
>From: "Bruce Lane" <kyrrin at bluefeathertech.com>
>To: <time-nuts at febo.com>
>Sent: Tuesday, December 25, 2007 7:49 PM
>Subject: Re: [time-nuts] Needed: 58532A Antenna
>
>
>> Hi, Hal,
>>
>> *********** REPLY SEPARATOR ***********
>>
>> On 25-Dec-07 at 11:44 Hal Murray wrote:
>>
>>>Why do you need the 58532A?
>>
>> "Prefer" would be a better word. No worries - Tom just popped into my 
>> mailbox with word that he has extras, and he's local to me. Problem 
>> solved.
>>
>> There are a couple of reasons I prefer the 58532's. First is the design -- 
>> They fit PERFECTLY on top of the pipe of a standard DirecTV/Dishnet 
>> satellite mount. Also, the conical shape helps greatly to shed snow and 
>> ice, which is an important consideration in my area (Pacific Northwest).
>>
>> Second: Performance. The two I currently have operating do an outstanding 
>> job, even with limited sky view.
>>
>> Thanks much.
>>
>>
>> -=-=-=-=-=-=-=-=-=-=-=-
>> Bruce Lane, Owner & Head Hardware Heavy,
>> Blue Feather Technologies -- http://www.bluefeathertech.com
>> kyrrin (at) bluefeathertech do/t c=o=m
>> "If Salvador Dali had owned a computer, would it have been equipped with 
>> surreal ports?"
>>
>>
>> _______________________________________________
>> time-nuts mailing list -- time-nuts at febo.com
>> To unsubscribe, go to 
>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow the instructions there.
>> 
>
>
>
>
>------------------------------
>
>Message: 8
>Date: Tue, 25 Dec 2007 12:08:47 -0800
>From: WB6BNQ <wb6bnq at cox.net>
>Subject: Re: [time-nuts] Precision AC source - build one ?
>To: Discussion of precise time and frequency measurement
>	<time-nuts at febo.com>
>Message-ID: <4771634F.55266724 at cox.net>
>Content-Type: text/plain; charset=us-ascii
>
>Hello Randy,
>
>Can you give more information on the equipment you are trying to calibrate ? For example the make and model
>and what level of accuracy you expect to reach. What is your intended use of this equipment, i.e., general
>hobby use or more serious purposes ?
>
>Bill....WB6BNQ
>
>Randy Leifer wrote:
>
>> Hello everyone, Merry Holidays.
>>
>> I am young at test gear knowledge, keep this in mind.
>> I'd like to calibrate some older test gear, and one
>> of the required items that I don't have, is an AC
>> voltage source -- w/adjustable volts and frequency.
>>
>> Ebay items cost $200-$2000.
>> But I figure I can send an adjustable sine wave into a
>> "power amplifier", to get what I need......and an
>> analog AC voltmeter, to read/check the voltage on the
>> amp's output.
>> Does this sound correct?
>> Are there other ways ?
>>
>> thanks,
>> =Randy=
>>
>>
>>
>> ____________________________________________________________________________________
>> Be a better friend, newshound, and
>> know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ
>>
>> _______________________________________________
>> time-nuts mailing list -- time-nuts at febo.com
>> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow the instructions there.
>
>
>
>
>------------------------------
>
>_______________________________________________
>time-nuts mailing list
>time-nuts at febo.com
>https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>
>End of time-nuts Digest, Vol 41, Issue 78
>*****************************************
>