Posted on: June 25, 2020 Posted by: admin Comments: 0


AVANTEK: YIG-Tuned Oscillator Part # ASF GHz. $ Buy It Now. or Best Offer. 2 watching. AVANTEK:Part #ASF YIG-Tuned Oscillator . Avantek: Avantek Octave Band Series YIG. Identifier avantek_Avantek_Octave_Band_Series_YIG. Identifier-ark ark://tk7g . I have a couple of AVANTEK YIG oscillators, models SF6- and AVM Both are 2 – 4 GHz units. None of the oscillators have their pins.

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These do require a good amount of power, magnetic coils, etc, but provide stable and rather low noise output, and good modulation capability.

Avantek K Band YIG Oscillator Yo57-4390 18-26.5ghz With Isolator

Core element is a small YIG sphere, placed in a magnetic field. However, for the current unit under investigation from a GHz frontendtype S, 8. Knocking it with a small! Varying the coil current — no effect.

Current consumption on the 15 V rail is normal. Well, with all the basics checked, what to do with such hermetically sealed unit, other than using it to satisfy my curiosity about its internals.


Hope to trace the defect to some specific part. This is possibly throught the side opening, which is usually welded shut, but can be drilled up rather easily.

To look inside, carefully removed the top weld seam on a lathe, and the you can pry the case open. What you can see is pretty straightforward, despite all the gold wires. Voltage at the resistors is about 4.

Also probed other parts of the circuit, with a thin wire, under the microscope. The coil — rather, the coils. The thick wire is the main tuning coil, which accepts 0.

Avantek S YIG oscillator: not oscillating at all | SimonsDialogs

This is for much lower currently but high bandwidth modulation. All is sealed and soaked with epoxy resin.

Note the hand made labels which may explain the cost yi these units if purchased new… looks like US style handwriting to me. Well, seems that fixing this is beyond what I can do here with the tools at hand.

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Mystery YIG Oscillator – Doogie’s Blog

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Mystery YIG Oscillator

Learn how your comment data is processed. A19 board, YTO unlock, bad precision trimmer s. Leave a Reply Cancel reply Your email address will not avnatek published. SimonsDialogs — A wild collection of random thoughts, observations and learnings.


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