Brian,
The support board part number indicates that it was used in a model HP 5328A or
B counter. I find that some versions of that model used a 05328-60027 board.
Maybe you misread the part number?
Anyway, There are a number of complete manuals for the 5328A & B counters on
the web,
- Original Message -
From: "Brian Lloyd"
To: "Discussion of precise time and frequency measurement"
Sent: Saturday, November 3, 2018 8:53:19 AM
Subject: Re: [time-nuts] OCXO info
On Fri, Nov 2, 2018 at 11:40 PM, DM wrote:
> Brian,
> The support b
Bob,
Please advise the make & model of your counter, and if possible, the make &
model of the OCXO it contains, or if you have the manual, the aging spec on the
time base. It's entirely possible (probable) that the OCXO is already several
orders of magnitude better than any HF WWV broadcast.
Excellent advice from Charles, especially concerning isolation criteria.
Should you be looking to distribute a standard 10 MHz frequency to various
bench instruments, I'd recommend that you take a look at Extron video
distribution amps. Several models on Ebay right now, at reasonable prices.
Yep, been there, done that!
I used a modified Extron ADA 3-80, then replaced it with an ADA 6, both of
which did have the CLC409 amps. Eventually, I replaced all with a real DA from
Montronics (Fluke). Had to modify it for 10 MHz, since it maxed out at 5 MHz.
Changing capacitors in tuned
Wes,
Here are a few links that should get you started in the right direction.
[ http://pe9ghz.org/cmsms/index.php?page=gpsd |
http://pe9ghz.org/cmsms/index.php?page=gpsd ]
[ https://easyeda.com/vr2wwp/Temp-b69e1159c6e04e98a45d2de8cb413c79 |
Manfred,
The 05328-20027 part number is the HP part number for the bare PCB used in the
A3 assembly 05328-60027 interface board. You can find the schematic for that
assembly in the manual for the militarized version of the 5328A (AN/USM-459) at
[
I must caution all who would buy the 5-digit panel meters, thinking that they
are actually capable of accuracy that you would normally expect from a 5-digit
meter.
The panel meters in question use a STM8S003F3 micro-controller, which contains
a single 10-bit A/D. Depending on which eBay or
back on track.
Hopefully, this program will help with that.
Thanks to all who replied.
DaveM
From: "DM"
To: time-nuts@lists.febo.com
Sent: Thursday, March 25, 2021 4:42:55 PM
Subject: FE-5680A Calibrator program by Bob Campbell VK4XV
I've run across several references to a FE-56
1:31:42 PM
Subject: [time-nuts] Re: Fwd: FE-5680A Calibrator program by Bob Campbell VK4XV
On 2021-03-26 19:18, DM wrote:
> The search is complete!! A friend sent me what appears to be the full
> package, the .exe and source code (although the source code is all Greek to
> me).
A
I've run across several references to a FE-5680A Calibrator program by Bob
Campbell VK4XV, but searches for it have been quite unfruitful. Does anyone
have a link to it, or know how to get in touch with Bob Campbell? I've searched
for his web site, but it seems to have gone into never-never
Here are a few online projects for GPS-controlled clocks. Most (all?) have a
PIC or Arduino to run the clock and sync to GPS time.
[ http://w8bh.net/avr/clock2.pdf | http://w8bh.net/avr/clock2.pdf ]
https://www.elprocus.com/how-to-build-a-gps-clock-using-arduino/
On a hunch, I searched for the other part number on the nameplate (0960-0477)
in one of the military stock reseller's database and found that the only end
item that this oscillator was used in was the AN/FPS-115 PAVE PAWS (Precision
Acquisition Vehicle Entry - Phased Array Warning System) radar
Jim,
That oscillator was a component in the old AN/USM-247V Versatile Avionics Shop
Test (VAST) automatic test system for Naval avionics systems. Many years ago, I
was a civil servant at the Naval Aviation Depot in Jacksonville, FL. While
there, I was one of a team of technicians that
Gerhard,
May I have a copy of the Gerbers for the Doubler-Distribution amp? I started
designing a PCB for the board myself, but if you could send me a copy of your
files, surely would save me a ton of time and work.
Thanks for your willingness to share your work.
DaveM
Hazel Green, AL, USA
To all who are interested in Gerhard's boards;
If you just send a zip file of the Gerber files that Gerhard has provided to
JLCPCB, you can get 5 boards, including shipping to your address (I'm in the
USA; I can't say what shipping would be to other countries) for a grand total
of $5.90 USD.
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