Motorola MICOM-500E-A Manuel d'utilisateur Page 11

  • Télécharger
  • Ajouter à mon manuel
  • Imprimer
  • Page
    / 11
  • Table des matières
  • MARQUE LIVRES
  • Noté. / 5. Basé sur avis des utilisateurs
Vue de la page 10
HF-SSB Micom 500E
10
RADIO MODIFICATION
Modifications that had been taken in the radio, in order to integrate it with the
400W amplifier.
1. Omit R325 and R326 from the High-power board.
2. Add 150Ωin parallel to R274.
3. Add diode in the ALC section.
4. Increase C127 to 4.7 μF, R189 to 12KΩand decrease C117 to 10μF.
3. Omit L1FL22 from the LORD board.
4. Add 10KΩin parallel to C7018.
5. Jumper between R1FL22 and L1FL22 junction to the radio ALC circuit.
RADIO TUNING PROCEDURE
Before operating the 400W transceiver, a calibration procedure should been taken.
An IBM PC and RSS (Radio Service Software) package, FLN2514, are required
to align the radio.(factory setting)
1. On the accessories section, please mark the check box of the 1kw Amplifier.
2. There are 4 steps of power outputs as noted above. If you need to perform a power
calibration, please refer to the power calibration procedure in the MICOM-2E
RSS manual.
3. Only the Low RF test can be tested. Do not use the Full test and the Channel
test.
4. On the option section, please mark the check box of the power data level to LOW
in order to reduce the sounding and data communication power output to 200W.
ALE
Automatic Link Establishment (ALE) is an embedded feature inside the Micom-2E/R
ALE family of mobile/fixed station HF-SSB radios.
Through the combined use of channel scanning, selective calling and Link Quality
Analysis, ALE automatically selects the best available communications link. It is no
longer necessary for an operator to be familiar with the varying factors, which affect high
frequency (HF) propagation between two points.
Each ALE equipped Micom-2 ALE family radio stores a matrix of Link Quality Analysis
(LQA) scores for all other stations in the HF network. Memorized LQA scores are
derived from an analysis of channel "soundings" which are periodically transmitted by
each network station. When an operator selects the individual or net call address of the
receiving station, ALE automatically determines the optimum available channel and
automatically initiates calling procedures. Sending and receiving operators are alerted
when a communication link has been established.
Vue de la page 10
1 2 ... 6 7 8 9 10 11

Commentaires sur ces manuels

Pas de commentaire