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Re: 10 MHz reference inputs
I've never seen ics sanded on equipment from reputable manufacturers. It's always the marginal fly-by-nights. terrell.michael.a@...> wrote:
By Adrian Godwin · #579 ·
Re: 10 MHz reference inputs
The IC numbers have been visible in every Extron DA that I've looked at. No reputable OEM removes common part numbers. Even if they did, there aren't that many ICs designed for this application. I
By Michael A. Terrell · #578 ·
Re: clock calibrator
wrote: This compares frequencies with very high sensitivity. Is it too complex for your needs ? https://www.eevblog.com/forum/metrology/dmtd-board/
By Adrian Godwin · #577 ·
Re: clock calibrator
No, the Elektor circuit is a phase meter. It shows the instantaneous phase difference between two signals. If the frequencies are different, the phase will be continuously changing. The meter needle
By John Kolb · #575 ·
Re: 10 MHz reference inputs
I used an Extron dist amp for mine. I had seen a youtube video of someone making the conversion for his rubidium source, I just adapted it to my GPSDO (the Russian one). It's so far been working fine
By Vince Vielhaber · #574 ·
Re: clock calibrator
Hi, Max described a good solution. But FWIW, another way to do it more discretely is like this: - GIVEN that the signal is a relatively low-frequency square wave. - Use a diode and cap in series to
By saipan59 (Pete) · #571 ·
Re: 10 MHz reference inputs
I think I like a ground lift switch. Set for min common mode signals. Some where I saw or read about grabbing old lan cards. Each one has filters (band pass) and transformers. All set to work at 10
By Steve Lindberg · #570 ·
Re: 10 MHz reference inputs
I'm not familiar with that model number. It appears to be a low end VGA amplifier of three 80MHz channels with four outputs per channel. It looks like at least two versions were built. Both have a
By Michael A. Terrell · #569 ·
Re: 10 MHz reference inputs
Leon Robinson ?? K5JLR Is anyone familiar with the Extron ADA 3 80? RBGS distribution amp and havea manual for it. Political Correctness is a Political Disease. Politicians and Diapers should be
By Leon Robinson · #568 ·
Re: 10 MHz reference inputs
Sorry for being stupid, I am not a big RF dude. But at 10MHz, IMHO, one can run this over a schottky diode? Tam With best regards Tam HANNA Enjoy electronics? Join 21k4 other followers by visiting the
By Tam Hanna · #566 ·
Re: 10 MHz reference inputs
It is insane (I¡¯m looking at you, Siglent). Someone thought they¡¯ll be very clever by saving a BNC connector. Probably a beancounter idea, although this may be giving them too much credit. Once
By Kuba Sunderland-Ober · #565 ·
Re: Making a Q-meter /
Hi Mikek, Correct, X axis is units of MHz. Y axis is volts at one turn side of 50:1 injection transformer. At 10 MHz marker, injection voltage = 1V / 50 = 20mV. Power applied to 50 turn side is 0.02W
By John KN5L · #564 ·
Re: Making a Q-meter /
Could you explain the graph to me? I assume G.MHz is 1 MHz. What is the Y axis? Is it the output impedance of the secondary in milliohms? Thanks, Mikek
By Mikek · #563 ·
Re: 10 MHz reference inputs
A little known sometimes obtainable older device is the Spectracom 8140 frequency distribution amplifier. It s somewhat different in that it uses remote boxes called ¡°Line Taps¡± that are placed in
By Greg Muir · #562 ·
Re: clock calibrator
Hi Jeff. As compared to what I understand you want I think the answer you got from SCMenasian is overkill raised to the Nth power. The phase/frequency detector in the 4046 CMOS phase lock loop will do
By MAX · #560 ·
Re: 10 MHz reference inputs
The isolation transformer may have converted the square wave to a sine wave. Paul, W8AEF _____ From: [email protected] [mailto:[email protected]]
By Paul <w8aef@...> · #558 ·
Re: 10 MHz reference inputs
Hi Jeff, You are aware that the Leo Bodnar GPS Device is a Square Wave Output? What does the waveform look like on an Oscilloscope with a 50 Ohm Load? Ross Sent: Friday, September 09, 2022 5:26 PM To:
By si_emi_01 · #556 ·
Re: Making a Q-meter /
Attached is SimSmith model for T68-2 50T Injection Transformer low frequency limit. Source is set to 0.02W = 1V. L.V.M trace is injection transformer voltage. John KN5L
By John KN5L · #554 ·
Re: 10 MHz reference inputs
Hi Jeff, I think that should work. The calculator on Toroids.info doesn¡¯t give me the correct answer. The Material does have a high AL, though. It shouldn¡¯t saturate with 50 Ohms with a 5V applied
By si_emi_01 · #553 ·
Re: 10 MHz reference inputs
Hi, Most Distribution Amplifiers have one Input and several Outputs. When connected to multiple devices, you want good isolation both filtering and galvanic. It is very easy to run into a Ground Loop
By si_emi_01 · #551 ·