PUMA T2
Technical Handbook
Technical description
Page 48 OTE Proprietary information
P/N: 779-0306/01
Revision 03
VCOH (SYNTH)
The oscillator operates at the frequency Foh, and the final stage selects the
second harmonic. The BSW selects the B bands as shown in Tab. 2.4:
Tab. 2.4: VCO frequencies
Version TX/RX B (MHz) Foh (MHz) BSW (V)
TX
380÷400
190÷200
5
PUMA T2-400
RX 380÷400 235÷245 0
TX 410÷430 205÷215 5
PUMA T2-430
RX 410÷430 250÷260 0
TX 445÷470 225.5÷235 5
PUMA T2-470
RX
445÷470
267.5÷280
0
TX
806÷825
403÷412.5
5
RX
851÷870
403÷412.5
5
PUMA T2-870
TX
851÷870
425÷435
0
VCOL
This oscillator is used during the second conversion in the receiver section with the
Fol frequency according to Tab. 2.5.
Tab. 2.5: VCOL frequencies
Version Fol
PUMA T2-400 75.6 MHz
PUMA T2-430 75.6 MHz
PUMA T2-470
70.2 MHz
PUMA T2-870 59.4 MHz
AMPLOTX
This band pass filter filters the VCOH second harmonic (electronic tuning). The
tuning is set with VT1 e VT2. The output level is +16 dBm.
AMPLORX
This selective amplifier gives the input for the first mixer in the receiving section.
The output level is +5 dBm.
The figure in the following page shows the power supply and control signals for the
transmitter and the receiver block.
To Next Page
Loading...