Yes I noticed some peculiar behavior when I operated the A7stand alone on my
lab bench, and tested the 2nd harmonic detector at 137and 274 Hz. Then when I
examined the schematic for thenewer version I could see that HP obviously
discovered the same thing.
I think I will make a home-brew
Hi Ulf
Also you noted the bulb had the thermionic device, That's used for
remigrating the Rb into the reservoir there is a procedure for doing it in the
manuals on the web.
It can take up to a week to draw all the Rb back into the reservoir after long
inactivity.Just make sure you use a
Totally agree with Scott.
On the lamp thats good it lights.
If you search older threads on Time-nuts you will see that on the FRS
rubidiums you can heat the lamp with a heat gun and re-migrate the RB off
of the glass. It makes them re-usable and extends the life very nicely.
I do not suggest doing
A friend of mine has bought a just out of calibration R & S XSRM Rubidium
standard from one of the so called "recyclers" on Ebay.
Although the price was good, and it came with the off air receiver, phase
meter, and frequency divider, it looks to have been heavily decommissioned
with
To all:
I would highly recommend not to buy used test equipment on e-bay , mine
(R) or HP or similar.
These pieces are mostly out of calibration , defective , just too expensive
to repair. I have 3 XSRM systems, which I co designed in 1970, they came
from e-bay and needed $ 5000 + to be
Ulrich:
So how was the WX?
Les
Lester B Veenstra K1YCM MØYCM W8YCM 6Y6Y
les...@veenstras.com
Physical and US Postal Addresses
5 Shrine Club Drive (Physical)
452 Stable Ln (RFD USPS Mail)
Keyser WV 26726
GPS: 39.336826 N 78.982287 W (Google)
GPS: 39.33682 N 78.9823741 W (GPSDO)
Picked up a scrapped 5065A tonight.
It was an early unit but a later one than the one I amtrying to fix.
The XO was gone. From what I could see, it had beena 10811 type with adapter
since there was no 115V wiring.
The RV Cavity was loose and I think that what was in this unit mayhave been a
It's that time again, just too much stuff, and not enough room at Sphere. For
time nuts, I have precision oscillators, HP counters and spare boards, and all
kinds of Time Code stuff.
I was just over at Okanagan College, and they would be interested in another
stuff day event for the students
I would say fix both units
The color of the bulb is simply Rb vapor condensed on the walls of the envelope.
10811 units are fairly common at good hamfests and ebay
Content by Scott
Typos by Siri
> On Sep 12, 2017, at 4:54 PM, Ulf Kylenfall via time-nuts
> wrote:
>
>
>
On 9/12/2017 5:58 AM, GandalfG8--- via time-nuts wrote:
A friend of mine has bought a just out of calibration R & S XSRM Rubidium
standard from one of the so called "recyclers" on Ebay.
Nigel / David,
Sorry to hear of your "bargain". However I doubt very much that the
lamp was made by R
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