Top Tags acer ahk antenna arduino basics capacitor car electroluminescent f-script fluke ford gti hack hardware iOS lumia mac microwave monitor moon mosfet mount mystery obd-ii oscillator osx phone plague repair satellite script serial software space utility vw windows yig. There is a spurious signal, about MHz above the center frequency. SimonsDialogs — A wild collection of random thoughts, observations and learnings. Notify me of follow-up comments by email.
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Minris Also probed other parts of the circuit, with a thin wire, under the microscope. The thick wire is the main tuning coil, which accepts 0. Notify me of follow-up comments by email. As expected from this helpful documenta fair amount of avantekk current was required before oscillation started. Power levels seemed to vary between 7 and 13 dBm across a wide range, however the analyzer calibration may be off somewhat.
Notify me of new posts by email. To look inside, carefully removed the top weld seam on a lathe, and the you can pry the case open. This is for much lower currently but high bandwidth modulation. 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. The analyzer allowed me to see the frequency move around as I changed the current on the tuning port. This is possibly throught the side opening, which is usually welded shut, but can be drilled up rather easily.
However, for the current unit under investigation from a GHz frontendtype S, 8. Voltage at the resistors is about 4. The coil — rather, the coils. Leave a Reply Cancel reply Your email address will not be published. This site uses Akismet to reduce spam. All is sealed and soaked with epoxy resin. The lower edge of the specified range 7. To determine the likely power output, I hooked the oscillator into a dummy load, then measured the current draw on the 15V input — it was almost exactly mA, which means it is probably a 30 mW Notify me of follow-up comments by email.
Learn more about dogecoin here. Before verifying the suspected power level, I used an inline attenuator to avoid any chance of damaging the machine. With mA flowing, a signal finally popped up at around 7. Learn how your comment data is processed.
What you can see is pretty straightforward, despite all the gold wires. Hope to trace the defect to some specific part. 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.
Your email address will not be published. Perhaps that was another thing that made this part a special order. These do require a good amount of power, magnetic coils, etc, but provide stable and rather low noise output, and good modulation capability.
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. Note the hand made labels which may explain the cost of these units if purchased new… looks like US style handwriting to me.
Then, join our amazing community. Current consumption on the 15 V rail is normal. Facebook Twitter Reddit Email Print. Sorry, your blog cannot share posts by email. Next, I measured the coil resistances. Leave a Reply Cancel reply Your email address will not avabtek published.
Well, with all the basics checked, what to do with such hermetically sealed unit, other than using avantei to satisfy my curiosity svantek its internals. TOP Related Posts.
Cross-reference to Legacy Avantek Oscillators
Satisfied that the module would behave somewhat as expected, I hooked it up to a spectrum analyzer. This is possibly throught the side opening, which is usually welded shut, but can be drilled up rather easily. Knocking it with a small! Your email address will not be published.
Avantek YF85-0107 YIG Filter
Kagalkree Satisfied that the module would behave somewhat as expected, I hooked it up to a spectrum analyzer. It matches the first pinout in this old zvantek sheet. The thick wire is the main tuning coil, which accepts 0. SimonsDialogs — Avantekk wild collection of random thoughts, observations and learnings.