How to test FE-5650A rubidium time standard against Leo Bodnar GPSDO
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TESTING THE FE-5650A RUBIDIUM STANDARD AGAINST A LEO BODNAR GPSDO The simplest useful test is to compare the FE-5650A 10 MHz output directly with the Leo Bodnar GPSDO, also set…
Leo Bodnar GPSDO (GPS-Disciplined Oscillator)
Comparing 5650A Rubidium Source with LBE-1421–23/9/2026
Video showing measurements: https://files.ad.thornett.net/astronet/5650A_vs_LBE-1421_measurements_230926.mp4 Long video showing drift of Rubidium 5650A time source in real time against the Leo Bodnar LBE-1421 GPS-disciplined time source (1 pps not used): https://files.ad.thornett.net/astronet/5650A_vs_LBE-1421_long_drift_video_230926.mp4
Comments on using Leo Bodnar LBE-1421 to produce 1 PPS output
Andy, First, I’m just curious why your focus on the 1‑second PPS output. Nearly every GPS module provides a PPS signal, so unless you specifically need a programmable frequency synthesizer,…
The Leo Bodnar LBE-1421 provides a 1 PPS output that can be used as a long-term GPS timing reference, while allowing the FE-5650A rubidium oscillator to provide the very stable short-term frequency, in a combined time source
You can use the 1 PPS as the long-term GPS timing reference, while allowing the FE-5650A rubidium oscillator to provide the very stable short-term frequency. Conceptually: The key point is…
How does rubidium locking link to PLL?
Yes — rubidium locking and a PLL are closely related ideas, although the atomic-lock servo is not necessarily a conventional electronic PLL in the narrow sense. Think of it like…
How does rubidium time source work?
A rubidium time source is slightly misnamed: fundamentally it is an extremely stable frequency source. Your FE-5650A, for example, produces a very accurate output such as 10 MHz. Electronics can…
Leo Bodnor low jitter GPS-locked frequency clock source 1 Hz to 1.1 GHz output LE-1420
Configuration screen at LRO 30/8/2026: Information about the device & software/datasheet: I have recently acquired one of these to help me with interferometry. This device comes recommended by members of…
Trimble and Leo Bodnar external RF clocks: Do they produce sine wave or square wave outputs?
TRIMBLE EXTERNAL CLOCKS: It depends on the specific Trimble device. For Trimble GPS-disciplined oscillators (GPSDOs) commonly used as 10 MHz frequency references: If you mean one of the surplus Trimble…
LBE-1420 GPSDO locked clock source : Leo Bodnar Electronics
This is an example of a clock source which can be used with SDRs that will accept external clocks for e.g. pulsar observations – the recommendation was made by a…
One upgrade that often improves hydrogen-line observations more than adding extra amplifiers or filters is improving the frequency stability of the SDR.
One upgrade that often improves hydrogen-line observations more than adding extra amplifiers or filters is improving the frequency stability of the SDR. Use a stable reference (TCXO or external clock)…