Re: [time-nuts] Agilent / HP 117A on eBay...

2013-07-26 Thread J. Forster
On mine, the side arms are insulated at the bottom and the conduit screws
directly into the Tee at the top. That makes the shield symmetric about
ground at the vertical post.

-John

===


 the side loops are insulated at the top to prevent forming aa shorted
 turn. It's a loop antenna that works on the magnetic field component of
 the incoming wave, rather than the electric field, like a whip. So, if
 you put a bunch of turns inside the loop of conduit, a complete loop of
 conduit will be a shorted secondary.

 J. Forster
 The HP 117A antenna is a circular shielded loop, about 1 meter or 3' in
 diameter. I never bothered to measure it. It looks to be made out of
 roughly 1 OD aluminum electrical conduit components, a Tee at the top
 and
 a pull box at the bottom. There are three conduit sections, one a
 diameter
 that goes vertically from the bottom pull box to the top Tee. There are
 a
 pair of semicirllas, one on each side.  The two side loop halved are
 insulated from the pull box as I remember.

 There is a picture in the 117A manual on the Agilent site, but no
 dimensions I saw. It is a crummy scan. The loop dimensions may be in a
 catalog of the period.

 It'd be fairly easy to replicate w/ a hand conduit bender, IMO.

 -John

 



 I never bothered


 Hi Pete, I have a 14 diameter choke ring GPS L1 with a big spike on
 the
 top of it, on the peak of the roof :)

 That certainly gets some stares!

 As the HP antenna is VLF, is the Antenna Huge?

 I can't reliably get WWVB in Australia.
 Lots of fading etcetera, or I'd be in there like a shot :)

 We do have a beer called VB hmmm..

 --marki

 -Original Message-
 From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]
 On
 Behalf Of Pete Lancashire
 Sent: Friday, 26 July 2013 10:50 AM
 To: Discussion of precise time and frequency measurement
 Subject: Re: [time-nuts] Agilent / HP 117A on eBay...

 I still would like to find one of the HP antenna's just for the looks.
 Even the 10509A with 13CW4's .. ok the FET version would be better.

 At least give those passing by something else to point at :-)

 -pete




 On Thu, Jul 25, 2013 at 7:09 AM, Burt I. Weiner b...@att.net wrote:

 I always wanted on, but with the intention of using it.  To bad it's
 now useless now with the new WWVB format, otherwise I'd buy it.
 Antennas I got.

 Burt, K6OQK

 At 06:14 AM 7/25/2013, time-nuts-requ...@febo.com wrote

  Would this box work with the new WWVB format?
 
 
  On 07/25/2013 04:07 AM, Mark C. Stephens wrote:
 
  Oh my gosh, a 117A has popped up on eBay!
  Looks in pretty good condition given its age...
 
  Seller claims the antenna will be listed shortly!
 
  Item # 281141315740
 
 
  --marki


 Burt I. Weiner Associates
 Broadcast Technical Services
 Glendale, California  U.S.A.
 b...@att.net
 www.biwa.cc
 K6OQK
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 are as significant as experiment, for thence comes quiet to the mind.
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 Ghost in the Shell


 Dr. Don Latham AJ7LL
 Six Mile Systems LLP
 17850 Six Mile Road
 POB 134
 Huson, MT, 59846
 VOX 406-626-4304
 Skype: buffler2
 www.lightningforensics.com
 www.sixmilesystems.com





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[time-nuts] Agilent / HP 117A on eBay...

2013-07-25 Thread Burt I. Weiner
I always wanted on, but with the intention of using it.  To bad it's 
now useless now with the new WWVB format, otherwise I'd buy 
it.  Antennas I got.


Burt, K6OQK

At 06:14 AM 7/25/2013, time-nuts-requ...@febo.com wrote

 Would this box work with the new WWVB format?


 On 07/25/2013 04:07 AM, Mark C. Stephens wrote:

 Oh my gosh, a 117A has popped up on eBay!
 Looks in pretty good condition given its age...

 Seller claims the antenna will be listed shortly!

 Item # 281141315740


 --marki


Burt I. Weiner Associates
Broadcast Technical Services
Glendale, California  U.S.A.
b...@att.net
www.biwa.cc
K6OQK 


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Re: [time-nuts] Agilent / HP 117A on eBay...

2013-07-25 Thread Pete Lancashire
I still would like to find one of the HP antenna's just for the looks. Even
the 10509A with 13CW4's .. ok the FET version would be better.

At least give those passing by something else to point at :-)

-pete




On Thu, Jul 25, 2013 at 7:09 AM, Burt I. Weiner b...@att.net wrote:

 I always wanted on, but with the intention of using it.  To bad it's now
 useless now with the new WWVB format, otherwise I'd buy it.  Antennas I got.

 Burt, K6OQK

 At 06:14 AM 7/25/2013, time-nuts-requ...@febo.com wrote

  Would this box work with the new WWVB format?
 
 
  On 07/25/2013 04:07 AM, Mark C. Stephens wrote:
 
  Oh my gosh, a 117A has popped up on eBay!
  Looks in pretty good condition given its age...
 
  Seller claims the antenna will be listed shortly!
 
  Item # 281141315740
 
 
  --marki


 Burt I. Weiner Associates
 Broadcast Technical Services
 Glendale, California  U.S.A.
 b...@att.net
 www.biwa.cc
 K6OQK
 __**_
 time-nuts mailing list -- time-nuts@febo.com
 To unsubscribe, go to https://www.febo.com/cgi-bin/**
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Re: [time-nuts] Agilent / HP 117A on eBay...

2013-07-25 Thread Mark C. Stephens
Hi Pete, I have a 14 diameter choke ring GPS L1 with a big spike on the top of 
it, on the peak of the roof :)

That certainly gets some stares!

As the HP antenna is VLF, is the Antenna Huge?

I can't reliably get WWVB in Australia.
Lots of fading etcetera, or I'd be in there like a shot :)

We do have a beer called VB hmmm..

--marki

-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf 
Of Pete Lancashire
Sent: Friday, 26 July 2013 10:50 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Agilent / HP 117A on eBay...

I still would like to find one of the HP antenna's just for the looks. Even the 
10509A with 13CW4's .. ok the FET version would be better.

At least give those passing by something else to point at :-)

-pete




On Thu, Jul 25, 2013 at 7:09 AM, Burt I. Weiner b...@att.net wrote:

 I always wanted on, but with the intention of using it.  To bad it's 
 now useless now with the new WWVB format, otherwise I'd buy it.  Antennas I 
 got.

 Burt, K6OQK

 At 06:14 AM 7/25/2013, time-nuts-requ...@febo.com wrote

  Would this box work with the new WWVB format?
 
 
  On 07/25/2013 04:07 AM, Mark C. Stephens wrote:
 
  Oh my gosh, a 117A has popped up on eBay!
  Looks in pretty good condition given its age...
 
  Seller claims the antenna will be listed shortly!
 
  Item # 281141315740
 
 
  --marki


 Burt I. Weiner Associates
 Broadcast Technical Services
 Glendale, California  U.S.A.
 b...@att.net
 www.biwa.cc
 K6OQK
 __**_
 time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to 
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Re: [time-nuts] Agilent / HP 117A on eBay...

2013-07-25 Thread J. Forster
The HP 117A antenna is a circular shielded loop, about 1 meter or 3' in
diameter. I never bothered to measure it. It looks to be made out of
roughly 1 OD aluminum electrical conduit components, a Tee at the top and
a pull box at the bottom. There are three conduit sections, one a diameter
that goes vertically from the bottom pull box to the top Tee. There are a
pair of semicirllas, one on each side.  The two side loop halved are
insulated from the pull box as I remember.

There is a picture in the 117A manual on the Agilent site, but no
dimensions I saw. It is a crummy scan. The loop dimensions may be in a
catalog of the period.

It'd be fairly easy to replicate w/ a hand conduit bender, IMO.

-John





I never bothered


 Hi Pete, I have a 14 diameter choke ring GPS L1 with a big spike on the
 top of it, on the peak of the roof :)

 That certainly gets some stares!

 As the HP antenna is VLF, is the Antenna Huge?

 I can't reliably get WWVB in Australia.
 Lots of fading etcetera, or I'd be in there like a shot :)

 We do have a beer called VB hmmm..

 --marki

 -Original Message-
 From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
 Behalf Of Pete Lancashire
 Sent: Friday, 26 July 2013 10:50 AM
 To: Discussion of precise time and frequency measurement
 Subject: Re: [time-nuts] Agilent / HP 117A on eBay...

 I still would like to find one of the HP antenna's just for the looks.
 Even the 10509A with 13CW4's .. ok the FET version would be better.

 At least give those passing by something else to point at :-)

 -pete




 On Thu, Jul 25, 2013 at 7:09 AM, Burt I. Weiner b...@att.net wrote:

 I always wanted on, but with the intention of using it.  To bad it's
 now useless now with the new WWVB format, otherwise I'd buy it.
 Antennas I got.

 Burt, K6OQK

 At 06:14 AM 7/25/2013, time-nuts-requ...@febo.com wrote

  Would this box work with the new WWVB format?
 
 
  On 07/25/2013 04:07 AM, Mark C. Stephens wrote:
 
  Oh my gosh, a 117A has popped up on eBay!
  Looks in pretty good condition given its age...
 
  Seller claims the antenna will be listed shortly!
 
  Item # 281141315740
 
 
  --marki


 Burt I. Weiner Associates
 Broadcast Technical Services
 Glendale, California  U.S.A.
 b...@att.net
 www.biwa.cc
 K6OQK
 __**_
 time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to
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Re: [time-nuts] Agilent / HP 117A on eBay...

2013-07-25 Thread paul swed
Marki the antennas are about 3 foot as I recall not huge, really. But
Australia is a bit far away. I would think JJY might be better for you.
That said to actually improve the signal at that distance build a serious
loop. Mine is 10' by 10 ft 800 ft of wire and preamp. Does a heck of a job
for the east coast of the US. Australia is large so you could go really
big. :-) Seriously the larger the area the better. Though the limit seems
to be the turns and the ability to tune the coil with a cap.
There is a lot of good information on a site called vlf.it on loops.
Regards
Paul
WB8TSL


On Thu, Jul 25, 2013 at 8:57 PM, Mark C. Stephens ma...@non-stop.com.auwrote:

 Hi Pete, I have a 14 diameter choke ring GPS L1 with a big spike on the
 top of it, on the peak of the roof :)

 That certainly gets some stares!

 As the HP antenna is VLF, is the Antenna Huge?

 I can't reliably get WWVB in Australia.
 Lots of fading etcetera, or I'd be in there like a shot :)

 We do have a beer called VB hmmm..

 --marki

 -Original Message-
 From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
 Behalf Of Pete Lancashire
 Sent: Friday, 26 July 2013 10:50 AM
 To: Discussion of precise time and frequency measurement
 Subject: Re: [time-nuts] Agilent / HP 117A on eBay...

 I still would like to find one of the HP antenna's just for the looks.
 Even the 10509A with 13CW4's .. ok the FET version would be better.

 At least give those passing by something else to point at :-)

 -pete




 On Thu, Jul 25, 2013 at 7:09 AM, Burt I. Weiner b...@att.net wrote:

  I always wanted on, but with the intention of using it.  To bad it's
  now useless now with the new WWVB format, otherwise I'd buy it.
  Antennas I got.
 
  Burt, K6OQK
 
  At 06:14 AM 7/25/2013, time-nuts-requ...@febo.com wrote
 
   Would this box work with the new WWVB format?
  
  
   On 07/25/2013 04:07 AM, Mark C. Stephens wrote:
  
   Oh my gosh, a 117A has popped up on eBay!
   Looks in pretty good condition given its age...
  
   Seller claims the antenna will be listed shortly!
  
   Item # 281141315740
  
  
   --marki
 
 
  Burt I. Weiner Associates
  Broadcast Technical Services
  Glendale, California  U.S.A.
  b...@att.net
  www.biwa.cc
  K6OQK
  __**_
  time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to
  https://www.febo.com/cgi-bin/**
  mailman/listinfo/time-nutshttps://www.febo.com/cgi-bin/mailman/listin
  fo/time-nuts
  and follow the instructions there.
 
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Re: [time-nuts] Agilent / HP 117A on eBay...

2013-07-25 Thread Richard Solomon

I had one of those antennas some years ago. sold it to an outfit in
Washington State (I was in Boston). IIRC, it was over $300 to ship
it UPS due to the size.

73, Dick, W1KSZ


On 7/25/2013 6:23 PM, paul swed wrote:

Marki the antennas are about 3 foot as I recall not huge, really. But
Australia is a bit far away. I would think JJY might be better for you.
That said to actually improve the signal at that distance build a serious
loop. Mine is 10' by 10 ft 800 ft of wire and preamp. Does a heck of a job
for the east coast of the US. Australia is large so you could go really
big. :-) Seriously the larger the area the better. Though the limit seems
to be the turns and the ability to tune the coil with a cap.
There is a lot of good information on a site called vlf.it on loops.
Regards
Paul
WB8TSL


On Thu, Jul 25, 2013 at 8:57 PM, Mark C. Stephens ma...@non-stop.com.auwrote:


Hi Pete, I have a 14 diameter choke ring GPS L1 with a big spike on the
top of it, on the peak of the roof :)

That certainly gets some stares!

As the HP antenna is VLF, is the Antenna Huge?

I can't reliably get WWVB in Australia.
Lots of fading etcetera, or I'd be in there like a shot :)

We do have a beer called VB hmmm..

--marki

-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Pete Lancashire
Sent: Friday, 26 July 2013 10:50 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Agilent / HP 117A on eBay...

I still would like to find one of the HP antenna's just for the looks.
Even the 10509A with 13CW4's .. ok the FET version would be better.

At least give those passing by something else to point at :-)

-pete




On Thu, Jul 25, 2013 at 7:09 AM, Burt I. Weiner b...@att.net wrote:


I always wanted on, but with the intention of using it.  To bad it's
now useless now with the new WWVB format, otherwise I'd buy it.

  Antennas I got.

Burt, K6OQK

At 06:14 AM 7/25/2013, time-nuts-requ...@febo.com wrote


Would this box work with the new WWVB format?


On 07/25/2013 04:07 AM, Mark C. Stephens wrote:


Oh my gosh, a 117A has popped up on eBay!
Looks in pretty good condition given its age...

Seller claims the antenna will be listed shortly!

Item # 281141315740


--marki

Burt I. Weiner Associates
Broadcast Technical Services
Glendale, California  U.S.A.
b...@att.net
www.biwa.cc
K6OQK
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Re: [time-nuts] Agilent / HP 117A on eBay...

2013-07-25 Thread Chuck Forsberg WA7KGX

I have made a number of effective loop antennas for various frequencies
tuned with variable capacitors going into the gate of a FET.  A large
number of turns on a ferrite rod will tune to 60 KHz and pick up a
good signal if located away from noise sources.  Or you could get a
Hula Loop and paint it orange or silver.

On 07/25/2013 07:34 PM, Richard Solomon wrote:

I had one of those antennas some years ago. sold it to an outfit in
Washington State (I was in Boston). IIRC, it was over $300 to ship
it UPS due to the size.

73, Dick, W1KSZ


On 7/25/2013 6:23 PM, paul swed wrote:

Marki the antennas are about 3 foot as I recall not huge, really. But
Australia is a bit far away. I would think JJY might be better for you.
That said to actually improve the signal at that distance build a 
serious
loop. Mine is 10' by 10 ft 800 ft of wire and preamp. Does a heck of 
a job

for the east coast of the US. Australia is large so you could go really
big. :-) Seriously the larger the area the better. Though the limit 
seems

to be the turns and the ability to tune the coil with a cap.
There is a lot of good information on a site called vlf.it on loops.
Regards
Paul
WB8TSL


On Thu, Jul 25, 2013 at 8:57 PM, Mark C. Stephens 
ma...@non-stop.com.auwrote:


Hi Pete, I have a 14 diameter choke ring GPS L1 with a big spike on 
the

top of it, on the peak of the roof :)

That certainly gets some stares!

As the HP antenna is VLF, is the Antenna Huge?

I can't reliably get WWVB in Australia.
Lots of fading etcetera, or I'd be in there like a shot :)

We do have a beer called VB hmmm..

--marki

-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Pete Lancashire
Sent: Friday, 26 July 2013 10:50 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Agilent / HP 117A on eBay...

I still would like to find one of the HP antenna's just for the looks.
Even the 10509A with 13CW4's .. ok the FET version would be better.

At least give those passing by something else to point at :-)

-pete




On Thu, Jul 25, 2013 at 7:09 AM, Burt I. Weiner b...@att.net wrote:


I always wanted on, but with the intention of using it.  To bad it's
now useless now with the new WWVB format, otherwise I'd buy it.

  Antennas I got.

Burt, K6OQK

At 06:14 AM 7/25/2013, time-nuts-requ...@febo.com wrote


Would this box work with the new WWVB format?


On 07/25/2013 04:07 AM, Mark C. Stephens wrote:


Oh my gosh, a 117A has popped up on eBay!
Looks in pretty good condition given its age...

Seller claims the antenna will be listed shortly!

Item # 281141315740


--marki

Burt I. Weiner Associates
Broadcast Technical Services
Glendale, California  U.S.A.
b...@att.net
www.biwa.cc
K6OQK
__**_
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--
 Chuck Forsberg WA7KGX   c...@omen.com   www.omen.com
Developer of Industrial ZMODEM(Tm) for Embedded Applications
  Omen Technology Inc  The High Reliability Software
10255 NW Old Cornelius Pass Portland OR 97231   503-614-0430

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Re: [time-nuts] Agilent / HP 117A on eBay...

2013-07-25 Thread Don Latham
the side loops are insulated at the top to prevent forming aa shorted
turn. It's a loop antenna that works on the magnetic field component of
the incoming wave, rather than the electric field, like a whip. So, if
you put a bunch of turns inside the loop of conduit, a complete loop of
conduit will be a shorted secondary.

J. Forster
 The HP 117A antenna is a circular shielded loop, about 1 meter or 3' in
 diameter. I never bothered to measure it. It looks to be made out of
 roughly 1 OD aluminum electrical conduit components, a Tee at the top
 and
 a pull box at the bottom. There are three conduit sections, one a
 diameter
 that goes vertically from the bottom pull box to the top Tee. There are
 a
 pair of semicirllas, one on each side.  The two side loop halved are
 insulated from the pull box as I remember.

 There is a picture in the 117A manual on the Agilent site, but no
 dimensions I saw. It is a crummy scan. The loop dimensions may be in a
 catalog of the period.

 It'd be fairly easy to replicate w/ a hand conduit bender, IMO.

 -John

 



 I never bothered


 Hi Pete, I have a 14 diameter choke ring GPS L1 with a big spike on
 the
 top of it, on the peak of the roof :)

 That certainly gets some stares!

 As the HP antenna is VLF, is the Antenna Huge?

 I can't reliably get WWVB in Australia.
 Lots of fading etcetera, or I'd be in there like a shot :)

 We do have a beer called VB hmmm..

 --marki

 -Original Message-
 From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]
 On
 Behalf Of Pete Lancashire
 Sent: Friday, 26 July 2013 10:50 AM
 To: Discussion of precise time and frequency measurement
 Subject: Re: [time-nuts] Agilent / HP 117A on eBay...

 I still would like to find one of the HP antenna's just for the looks.
 Even the 10509A with 13CW4's .. ok the FET version would be better.

 At least give those passing by something else to point at :-)

 -pete




 On Thu, Jul 25, 2013 at 7:09 AM, Burt I. Weiner b...@att.net wrote:

 I always wanted on, but with the intention of using it.  To bad it's
 now useless now with the new WWVB format, otherwise I'd buy it.
 Antennas I got.

 Burt, K6OQK

 At 06:14 AM 7/25/2013, time-nuts-requ...@febo.com wrote

  Would this box work with the new WWVB format?
 
 
  On 07/25/2013 04:07 AM, Mark C. Stephens wrote:
 
  Oh my gosh, a 117A has popped up on eBay!
  Looks in pretty good condition given its age...
 
  Seller claims the antenna will be listed shortly!
 
  Item # 281141315740
 
 
  --marki


 Burt I. Weiner Associates
 Broadcast Technical Services
 Glendale, California  U.S.A.
 b...@att.net
 www.biwa.cc
 K6OQK
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Dr. Don Latham AJ7LL
Six Mile Systems LLP
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