τα φωτα σας κυριοι περι sangean ats909

[a75]

προσφατα επεσε στα χερια μου ενα sangean 909 παρατηρησα δυο τριμερ πισω απο το πλαστικο της προσοψης (που λειπει ) μηπως γνωριζει καποιος τι ακριβως ρυθμιζουν ευχαριστω11052012179.jpg11052012180.jpg

[a75]

How do I adjust the LSB/USB offset?"

You should only need to adjust the BFO if it is noticeably out of adjustment.
The BFO can be adjusted as follows: The radio should be at normal room temperature, not in the sun nor out in the cold. Let it sit there for about 30 minutes.

1. Tune to WWV, CHU, or an equivalent frequency standard. If none is available at your location, a local MW station will do.
2. Remove the plastic LCD cover with a thin metal or plastic object.
3. There are two adjustment pots under the display, they may be gray or orange. The pot to adjust is TC301, on the right side.
4. Switch from LSB to AM to USB and compare the beat note. If you don't notice a difference in the beat notes, don't bother changing it.
5. If the beat note is low on LSB, turn the pot slightly clockwise.
6. If the beat note is high on LSB, turn the pot slightly counterclockwise.
7. Repeat step #4 until the beat notes sound the same.

Note that TC302 adjusts the clock. If you find your SSB unchanged and your clock very fast (or slow), you adjusted the wrong pot!
This is at best only a rough adjustment. You'll need a frequency counter and the service manual if you want to do it right.




ευχαριστω πολυ τα βρηκα

[Dimpas]

Το δικό μου 909Χ έχει κάποια θέματα με το tuning knob και το keypad . Ποιός μπορεί να το επισκευάσει ? Υπάρχει εξουσιοδοτημένος αντιπρόσωπος ? Προτιμώ στην Αθήνα !