time-nuts@febo.com
Sent: Monday, May 24, 2010 10:10 AM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Bob,
On 25 May 2010 00:27, Robert Benward rbenw...@verizon.net wrote:
Bob,
I just went out an ordered a bunch of gender changers and null modem
cables,
and a DB9 tester
I have been reading the posts with interest.
My biggest difficulty with ex-telecom GPSDO units has been
trying to get a USB to serial converter on a PC to talk to the unit.
There always seems to be another layer that has to be set before it
works.
So far I have always managed to make them work
if one is available.
Bob
- Original Message - From: Bob Camp li...@rtty.us
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, May 23, 2010 9:21 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Hi
Long ago I decided
-
From: Bob Camp li...@rtty.us
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Monday, May 24, 2010 7:15 AM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Hi
Gotta label them *something* or sorting through them in the cable bin becomes
pretty
My experiences with these serial USB adapters has been very good but
I've sort of only used these with Linux. They should be recognised by
the OS as a serial port providing device and allocated a device. You
need to find out what that device is as it's unlikely to be the next
COM port in
-422.
Bob
- Original Message - From: Steve Rooke sar10...@gmail.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Monday, May 24, 2010 1:40 AM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
On 24 May 2010 15:22, Robert Benward
: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Hi
Gotta label them *something* or sorting through them in the cable bin
becomes pretty difficult.
In addition to the wiring options you can (obviously) have either a male
or female on either end. There are so many odd pieces of gear out
Message
From: Robert Benward rbenw...@verizon.net
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Mon, May 24, 2010 7:20:32 AM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Steve,
If you are worried about ground loops you should be using RS-422. I
On 25 May 2010 00:54, jimlux jim...@earthlink.net wrote:
Bob Camp wrote:
Hi
Gotta label them *something* or sorting through them in the cable bin
becomes pretty difficult.
In addition to the wiring options you can (obviously) have either a male
or female on either end. There are so many
:32 AM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Steve,
If you are worried about ground loops you should be using RS-422. I can
almost guarantee you that pin 7 is attached to
the PCB ground plane which in turn is connected to chassis. Hopefully
everyone is plugged
of precise time and frequency measurement time-nuts@febo.com
Sent: Monday, May 24, 2010 10:01 AM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
On 25 May 2010 00:20, Robert Benward rbenw...@verizon.net wrote:
Steve,
If you are worried about ground loops you should be using RS-422. I can
Checked wires, measured voltages, -0.5 and +2.0 on TX and RX.
Bob
- Original Message -
From: Steve Rooke sar10...@gmail.com
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Monday, May 24, 2010 10:10 AM
Subject: Re: [time-nuts] Z3805 utility, Was: AW
Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Steve Rooke
Sent: Monday, May 24, 2010 9:45 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
My experiences with these serial USB
Anyway, the key was having null modem adapters that are clearly
identified as such, and everything else straight through.
I've had pretty good luck with the same sort of approach.
One aspect that hasn't been discussed much is the sex of the connectors. PCs
have male DB-9s. The other type
My biggest difficulty with ex-telecom GPSDO units has been trying to get a
USB to serial converter on a PC to talk to the unit.
There always seems to be another layer that has to be set before it works.
So far I have always managed to make them work in the end, but getting the
COM port
Robert Benward wrote:
Checked wires, measured voltages, -0.5 and +2.0 on TX and RX.
Bob
That does sound very odd if it is RS232.
Have you measured these voltages out of the Z38xx unit into just an open
cable? That would take any driving or loading from the PC-end serial
port out of the
Ah man!!! I had some of those red APC UPS cables!!! Drove me crazy!!!
Bob
- Original Message -
From: Hal Murray hmur...@megapathdsl.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Monday, May 24, 2010 2:51 PM
Subject: Re: [time-nuts] Z3805
-nuts@febo.com
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Didier Juges wrote:
Bill, I think you got it backwards. +/- 12V is typical for RS-232, 0/+5V is
for RS-422 and RS-485.
No RS-232 receiver should be damaged with +/- 12V or even +/- 15V because
that is their normal
[mailto:time-nuts-boun...@febo.com] Im Auftrag von Robert Benward
Gesendet: Sonntag, 23. Mai 2010 05:31
An: Discussion of precise time and frequency measurement
Betreff: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Thank you all for these inputs!
Most importantly, the big question
Bob,
I can't say for sure if the Z3805a will automatically initialize itself
from a power-on with no monitor on the serial port, but I think it
should. I got mine from China over a year ago and I don't recall telling
it to do a survey, but maybe I did. One thing that has been mentioned
here
thingy while I
do other things...
-Original Message-
From: Bruce Griffiths bruce.griffi...@xtra.co.nz
Date: Sun, 23 May 2010 10:39:21
To: Discussion of precise time and frequency
measurementtime-nuts@febo.com
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Didier
-nuts] Z3805 utility, Was: AW: (no subject)
Hi
As mentioned in the wiki, the standard dates to 1969. The interface dates
to (at least) 1962. I would not be at all surprised to find that it's older
than that. My first exposure was on Bell system modems, which were showing
up as surplus in the late
At 08:27 AM 5/23/2010, Bob Camp wrote...
As mentioned in the wiki, the standard dates to 1969. The interface
dates to (at least) 1962.
No, it says RS-232-C dates to 1969. The C revision was at least the 3rd
(probably the 4th, as they likely did not start with RS-232-A). It is
very probable
Hi
The DB-25 connector, with the pinouts detailed in the C rev and the levels in
C all existed in the early 60's / late 50's. It took them until C to get a
spec that was at least close to describing what was already common practice,
the A and B revs both had a lot missing in them.
Bob
On May
-
From: Ulrich Bangert df...@ulrich-bangert.de
To: 'Discussion of precise time and frequency measurement'
time-nuts@febo.com
Sent: Sunday, May 23, 2010 6:29 AM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Bob,
even without a computer connected the beast should do SOMETHING
and pin 7 grounded.
Bob
- Original Message - From: Ulrich Bangert df...@ulrich-bangert.de
To: 'Discussion of precise time and frequency measurement'
time-nuts@febo.com
Sent: Sunday, May 23, 2010 6:29 AM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Bob,
even
23 reversed and
pin 7 grounded.
Bob
- Original Message - From: Ulrich Bangert df...@ulrich-bangert.de
To: 'Discussion of precise time and frequency measurement'
time-nuts@febo.com
Sent: Sunday, May 23, 2010 6:29 AM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Bob
Robert Benward wrote:
Bob
Looking at al these pictures, I'm beginning to think I have a Z3801A,
not a 05A. After a few hours, the unit still has not locked. It is
possible the antenna is bad. I have a few more that I know are working.
I also took the precaution of connecting an antenna
In a message dated 23/05/2010 18:51:55 GMT Daylight Time,
rbenw...@verizon.net writes:
Looking at al these pictures, I'm beginning to think I have a Z3801A, not
a 05A. After a few hours, the unit still has
not locked.
--
Bob
It's easy enough to tell If you have a
- Original Message - From: Bob Camp li...@rtty.us
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, May 23, 2010 12:42 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Hi
The Symmetricom 3805's have an area on the lower board right
...@aol.com
To: time-nuts@febo.com
Sent: Sunday, May 23, 2010 2:10 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
In a message dated 23/05/2010 18:51:55 GMT Daylight Time,
rbenw...@verizon.net writes:
Looking at al these pictures, I'm beginning to think I have a Z3801A
- Original Message - From: gandal...@aol.com
To: time-nuts@febo.com
Sent: Sunday, May 23, 2010 2:10 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
In a message dated 23/05/2010 18:51:55 GMT Daylight Time,
rbenw...@verizon.net writes:
Looking at al these pictures, I'm
- Original Message - From: gandal...@aol.com
To: time-nuts@febo.com
Sent: Sunday, May 23, 2010 2:10 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
In a message dated 23/05/2010 18:51:55 GMT Daylight Time,
rbenw...@verizon.net writes:
Looking at al these pictures, I'm
...@rtty.us
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, May 23, 2010 3:20 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Hi
You might also be able to go to their web site and hit the send me a free
sample button
All the LEDs light upon POST.
- Original Message -
From: Bob Camp li...@rtty.us
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Sunday, May 23, 2010 4:24 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Hi
Sounds like a blown LED
- Original Message
From: Jeff Hook jeffh...@comcast.net
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Sun, May 23, 2010 12:42:45 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Bob
My 3805 cables look like this
DB9 DB25
2
, May 23, 2010 3:20 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Hi
You might also be able to go to their web site and hit the send me a
free sample button.
If it's a 3801, there's a good chance what you are looking at are RS-422
levels. The previous owner may have
of precise time and frequency measurement
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
John,
Did any of the other LEDs come on? All I had was power for a few hours.not
to mention the lack of
communications
Bob
- Original Message -
From: John Allen j
- Original Message -
From: Stanley Reynolds stanley_reyno...@yahoo.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, May 23, 2010 3:56 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
- Original Message
From: Jeff Hook
and frequency measurement time-nuts@febo.com
Sent: Sunday, May 23, 2010 4:56 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
- Original Message
From: Jeff Hook jeffh...@comcast.net
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Sun
and frequency measurement time-nuts@febo.com
Sent: Sunday, May 23, 2010 5:24 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Receive data is pin 2 on DB9 and 3 on DB25
Transmit data is Pin 3 on DB9 and 2 on DB25
A straight thru cable with DB9 on one end and DB25 on the other
...@verizon.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, May 23, 2010 4:41 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Jeff,
A plain serial cable will have 23 swapped, a straight through is 2-2
and 3-3. There were a lot of DB25
-
From: Robert Benward rbenw...@verizon.net
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Sunday, May 23, 2010 4:41 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Jeff,
A plain serial cable will have 23 swapped, a straight through is 2-2
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Sunday, May 23, 2010 7:09 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Bob,
Serial ports have always been tough to get working right.
I guess I shouldn't call a serial cable, a straight cable.
I just
- Original Message
From: Robert Benward rbenw...@verizon.net
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Sun, May 23, 2010 4:38:43 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Jeff,
Generally for a given DTE, there is a swap
playing with RS-232.
Bob
- Original Message -
From: Jeff Hook jeffh...@comcast.net
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Sunday, May 23, 2010 7:09 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Bob,
Serial ports have
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
- Original Message
From: Robert Benward rbenw...@verizon.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sun, May 23, 2010 4:38:43 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW
Stanley Reynolds wrote:
snip
Dec computers / terminal servers were as I described, but many brands
were different. Still have a BOB aka break out box with LEDs to
indicate levels, matching transmit and receive is easy, getting the
hardware flow control / signaling right was a little more
Bob,
Does your plain serial cable have 25pin on one end and 9pin on the other?
If so, it shoud be 2-3 and 3-2 (because of DB9 toDB25 conversion)
If its 2-2 and 3-3 its a null modem cable (this is what you want)
This is not true if its 9 pin to 9 pin or 25 pin to 25 pin cable
standard serial
...@earthlink.net
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Sunday, May 23, 2010 8:58 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Stanley Reynolds wrote:
snip
Dec computers / terminal servers were as I described, but many brands
: Sunday, May 23, 2010 9:15 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Bob,
Does your plain serial cable have 25pin on one end and 9pin on the other?
If so, it shoud be 2-3 and 3-2 (because of DB9 toDB25 conversion)
If its 2-2 and 3-3 its a null modem cable (this is what you want
Message - From: Jeff Hook jeffh...@comcast.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, May 23, 2010 9:15 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Bob,
Does your plain serial cable have 25pin on one end and 9pin
Hi
Long ago I decided to go with the terms straight and null modem for the
cables I use. NM and ST are easy to mark and hard to confuse.
Bob
On May 23, 2010, at 8:58 PM, jimlux wrote:
Stanley Reynolds wrote:
snip
Dec computers / terminal servers were as I described, but many brands
, 2010 8:27:01 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
OK. I think I know where some of this confusion I'm having is coming from..
All these descriptions are misleading in that they (Wiki) call pin 2 TX. On
wiki's page, both DCE and DTE are TX=2. The table below shows
that a try.
Jeff
- Original Message - From: Robert Benward rbenw...@verizon.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, May 23, 2010 4:41 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Jeff,
A plain serial cable will have
- Original Message - From: Jeff Hook jeffh...@comcast.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, May 23, 2010 7:09 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Bob,
Serial ports have always been tough to get
, Was: AW: (no subject)
- Original Message
From: Robert Benward rbenw...@verizon.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sun, May 23, 2010 4:38:43 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Jeff,
Generally
At 09:27 PM 5/23/2010, Robert Benward wrote...
If your device is a DCE, then pin 2 is really a RX input, not a TX
output.
You're looking at it wrong - a modem is a DCE, and pin 2 is Transmitted
Data (TX) input. That is, data input to the modem for transmission to
the remote. TX is an output
of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, May 23, 2010 5:24 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Receive data is pin 2 on DB9 and 3 on DB25
Transmit data is Pin 3 on DB9 and 2 on DB25
A straight thru cable with DB9 on one end
: Bob Camp li...@rtty.us
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Sunday, May 23, 2010 9:21 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Hi
Long ago I decided to go with the terms straight and null modem for the cables I use. NM
to the confusion.
Bob
- Original Message -
From: Mike S mi...@flatsurface.com
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Sunday, May 23, 2010 10:29 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
At 09:27 PM 5/23/2010, Robert Benward
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, May 23, 2010 9:21 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Hi
Long ago I decided to go with the terms straight and null modem for
the cables I use. NM and ST are easy to mark and hard
Bob,
everything you need for the Z3805 is included in my Z38XX utility, that has
already been mentioned. This includes sending commands to the receiver, you
do not need another terminal program. I own a Z3805 myself and basically I
have written the software for myself. A Z3801 manual in
Hi
The lower connector on the 3805 is the command port that appears to have the
422 / 232 option jumpers associated with it.
The upper connector looks like it's only wired for RS-232 . It's connected to
the lower board in the unit. What's it for?
Bob
On May 22, 2010, at 5:50 AM, Ulrich
To: 'Discussion of precise time and frequency measurement'
time-nuts@febo.com
Sent: Saturday, May 22, 2010 5:50 AM
Subject: [time-nuts] Z3805 utility, Was: AW: (no subject)
Bob,
everything you need for the Z3805 is included in my Z38XX utility, that has
already been mentioned. This includes sending
. Everything is warm, but nothing else. Any ideas?
Bob
- Original Message -
From: Robert Benward rbenw...@verizon.net
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Saturday, May 22, 2010 9:49 AM
Subject: Re: [time-nuts] Z3805 utility, Was: AW
-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Robert Benward
Sent: Saturday, May 22, 2010 2:08 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Hi All,
I hooked everything up and I still get nothing
and frequency measurement
time-nuts@febo.com
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Hi All,
I hooked everything up and I still get nothing. I can't seem to establish
communications with the Z3805. I tried a null modem as well, in case the
cable (supplied) was wired
: Saturday, May 22, 2010 3:09 PM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
When all else fails, get out the voltmeter.
Do you have power to the antenna? Is it the right voltage? All the way to
the antenna?
What volts
...@febo.com] On
Behalf Of Bill Hawkins
Sent: Saturday, May 22, 2010 3:09 PM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
When all else fails, get out the voltmeter.
Do you have power to the antenna? Is it the right voltage? All
and frequency measurement
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Have you looked at the serial connector with an oscilloscope? Pin 2 should
be the output data. Pin 3 is for data going into the GPS. And pin 7 is
ground. I use Z3801A systems which have a 25-pin connector
time and frequency measurementtime-nuts@febo.com
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Didier Juges wrote:
Bill, I think you got it backwards. +/- 12V is typical for RS-232, 0/+5V is
for RS-422 and RS-485.
No RS-232 receiver should be damaged with +/- 12V or even
-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Bill Hawkins
Sent: Saturday, May 22, 2010 3:09 PM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
When all else fails, get out the voltmeter.
Do you have
At 09:47 PM 5/22/2010, Robert Darlington wrote...
Was there ever a standard? I always thought the RS stood for
Recommended Standard, as in you *should* do the following as
Recommended Standard, and is this is a standard which is recommended
for use.
The latest standard I've seen is
Wireless thingy while I do
other things...
-Original Message-
From: Bruce Griffiths bruce.griffi...@xtra.co.nz
Date: Sun, 23 May 2010 10:39:21
To: Discussion of precise time and frequency measurementtime-nuts@febo.com
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject
Camp li...@rtty.us
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Saturday, May 22, 2010 10:54 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)
Hi
In this case the RS relates to Radio Shack ..
Not a lot of standardization in the RS-232
Mike S wrote:
At 09:47 PM 5/22/2010, Robert Darlington wrote...
Was there ever a standard? I always thought the RS stood for
Recommended Standard, as in you *should* do the following as
Recommended Standard, and is this is a standard which is recommended
for use.
The latest standard I've
Bob,
I have two Z3805A's. One is 1998 HP and one is a 2004 Symmetricom.
The older HP took a VERY LONG TIME to complete site survey.
Both use 24V power.
Both are also RS-232 on lower connector. (even though it says 422 on the
boards)
Use null modem cable (only three wires needed if you make
Do I need a computer to enable this thing?
I expect you need a computer to tell it to take a survey. Once that works,
you don't need a computer if you don't change the location. (It's actually
the antenna location that matters. You can move the unit around in your lab.)
You probably want
KO4BB
Bruce
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Bill Hawkins
Sent: Saturday, May 22, 2010 3:09 PM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] Z3805 utility, Was: AW
.
John Allen K1AE
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Robert Benward
Sent: Saturday, May 22, 2010 11:31 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject
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