[time-nuts] EFRATOM LPRO-101
phill.r1 at btinternet.com
Wed Feb 3 12:08:17 UTC 2010
This would appear to be a faulty unit, I also purchased the same unit from
Bob Mokia two weeks ago and its performing very well. It gives a frequency
of 10.000,000,005 Mhz.
One very obvious fault is the BITE voltage - - this should initially be 4.5
volts, which falls to less than 30 mV. within a few minutes. The XTAL
Control Volts, after a short while falls to 6.145 V., so yours, at 14.67 V,
would seem to be wrong ! The Lamp volts settle to 6.736 V, and the Ext C
Field is 2.426 V. , which checks with your result.
I'm sure you will get a replacement.
From: "Jim" <jim at commo.com>
Sent: Tuesday, February 02, 2010 9:08 PM
To: <time-nuts at febo.com>
Subject: [time-nuts] EFRATOM LPRO-101
> Hello all.
> I received an EFRATOM LPRO-101 last week from eBay Fluke 1, and wired it
> up last night. The results are not good.
> Using a HP 5370B counter with calibration less than one year old, the
> frequency reads = 10,000,146,012.9
> Power Applied = 24.9Vdc @ 0.30 amps after warm up
> Lamp Voltage = 5.9 Vdc
> Ext C Field = 2.437
> XTL V Mon = 14.67
> Bite = 4.57
> Bite never goes low.
> I just sent an email to the outfit I purchased it from, but would like to
> get this working instead of waiting a month or so.
> Is it dead? Any thing I can do to revive it?
> Any suggestions?
> Thanks to all.
> Jim N0OBG
> The heart of the wise inclines to the right, but the heart of the fool to
> the left. Eccl 10:2 (NIV)
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