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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Varying the coil current — no effect. Save my name, email, and website in this browser for the next time I comment. The lower edge of the specified range 7. Note the hand made labels which may explain the cost of these units if purchased new… looks like US style handwriting to me.

Learn how your comment data is processed. There are also tons of Avantek modules, in their standard round format, but a lot of them are custom part numbers with no specifications known. Your email address will not be published. Core element is a small YIG sphere, placed in a magnetic field. What you can see is pretty straightforward, despite all the gold wires.

Well, seems that fixing this is beyond what I can do here with the tools at hand. The thick wire is the main tuning coil, which accepts 0.

Your email address will not be published. Before verifying the suspected power level, I used an inline attenuator to avoid any chance of damaging the machine. Notify me of new posts by email. Power levels seemed to vary between 7 and 13 dBm across a wide range, however the analyzer calibration may be off somewhat. To look inside, carefully removed the top weld seam on a lathe, and the you can pry the case open. The particular oscillator I received is marked with model number SO and is labelled for 7.


A range of 6 dB matches the units on the spec sheet, but a 7 dBm minimum power is below that of any of the comparable modules. Knocking it with a small!

These do require a good amount of power, magnetic coils, etc, but provide stable and rather avantfk noise output, and good modulation capability. This is for much lower currently but high bandwidth modulation. Then, join our amazing community. Notify me of follow-up comments by email. With mA flowing, a signal finally popped up at around 7.

For a project I am currently working on, which I will detail here too eventually, I needed an oscillator capable of covering 8 to 12 GHz. With the specs determined, I now have enough information to continue work on my project using this oscillator. It matches the first pinout in this old spec sheet.

Mystery YIG Oscillator – Doogie’s Blog

This is possibly throught the side opening, which is usually welded shut, but can be avabtek up rather easily. Notify me of follow-up comments by email.

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Sorry, your blog cannot share posts by email. Voltage at the resistors is about 4. Learn more about dogecoin here. Current consumption on the 15 V rail is normal. Also probed other parts of the circuit, with a thin wire, under the microscope. This site uses Akismet to reduce spam. The coil — rather, avantej coils. A19 board, YTO unlock, bad precision trimmer s.


Next, I measured the coil resistances. Leave a Reply Cancel reply Your email address will not be published. Satisfied that the module would behave somewhat as expected, I hooked it up to a spectrum analyzer.

YIG Oscillator

Hope to trace the defect to some specific part. Well, with all the basics checked, what to do with such hermetically sealed unit, other than using it yib satisfy my curiosity about its internals. Facebook Twitter Reddit Email Print. Since this particular project wasn’t very sensitive to any of the parameters, I waited for a cheap one to show up with the right range and went for it.

Perhaps that was another thing that made this part a special order. The closest standard units appear to be avamtek AV through AV, which cover 8 to SimonsDialogs — A wild collection of random thoughts, observations and learnings. The analyzer allowed me to see the frequency move around as I changed the current on the tuning port.

All is sealed and soaked with epoxy resin. There are quite a few of the miniature Stellex units on eBay, but they generally don’t yug much past 10 GHz.