Quelqu'un connait-il cet antenna analyser MFJ-269 HF-VHF-UHF
Je n' arrive pas a lire le conteur de fréquence en UHF dans les 400 mhz
il ne marque rien sur l' afficheur.
Je l' ai acheté neuf.
Merci a vous.
Ve2JGP Jean-Guy
Tiré du manuel d'instruction. En passant, le bouton UHF doit être poussé au fond et avec de gros doigts, c'est plus difficile.
2. UHF Operation: UHF coverage is broken into two bands. To measure UHF SWR (415-490 MHz),
first press in the UHF switch located just above the LCD display. Then, for 415-470 MHz coverage, set
the upper Frequency MHz switch to the 113-155 MHz band (UHF LO). For 470-490 MHz coverage,
set the upper Frequency MHz switch to 155-230 MHz. (UHF HI).
It is normal for the VFO's Tune range to exceed the analyzer's usable UHF measurement range. If the
VFO frequency is out of range in UHF Mode, one of the error messages shown below will instruct you to
increase or decrease frequency to bring it back in range.
Adjust Tune clockwise to increase frequency and counterclockwise to decrease frequency. When in
range, the operating Frequency will appear on the top line of the LCD display -- along with the SWR
reading. The bottom display line becomes an analog SWR bar-graph (see below).
Remember to set the top Frequency MHz selector fully counterclockwise (155-230) when setting up for
UHF HI (470-490MHz) or set to the second to last switch position (113-155) when setting up for UHF
LO (415-470 MHz) measurements. The analyzer converts the analyzer's VHF oscillator up to the UHF
band for those measurements.
http://www.mfjenterprises.com/Downloads/index.php?productid=MFJ-269C&filename=MFJ-269C%20User%20Manual%20REV1B.pdf&company=mfj (http://www.mfjenterprises.com/Downloads/index.php?productid=MFJ-269C&filename=MFJ-269C%20User%20Manual%20REV1B.pdf&company=mfj)
Au cas ou on t'aurait pas répondu, en UHF, il n'affiche pas la fréquence. Il t'indique plutot de monter ou descendre pour arriver dans la bande. C'est écrit en "petits caractères" dans le manuel.
73,