by Dominique - F1FRV
50-650 MHz SYNTHETISED
PACKET AND MULTIMEDIA DATA
This transceiver can be used in simplex, semi or full duplex . The FM data
bandwidth is from 25 kHz, up to 650 kHz, with available 10.7 MHz ceramic
In bands 50-54, 70-76, 144-148, 219-225, 420-450 MHz, the power output
available is ~1 Watt up to 225 MHz, and ~500 mW above.
It can also be used on the same bands with an associated 200mW > 25
Watts power amplifier.
For high data rates, it is designed to be used as intermediate frequency
In this case 254.4 and 315 MHz can be used as IF’s (choice guided by
available SAW filters).
For transverter use, the on board final TX transistor is not installed,
and available output power is +12 dBm.
TRX_SCH.PDF: Schematics of transceiver main board
TRX_LAYOUT.PDF: Layout and PCB views
OVEN.PDF: Temperature stabilisation for oscillator
SIMPL_SW.PDF: Pin switch for simplex transceiver
25W_PA.PDF: Power amplifier for simplex transceiver
TRX_CALC.XLS: Some necessary calculations
Up to now, only a part of paperwork’s is done...
Availability is not for tomorrow morning….
A lot of remaining things have to be criticised, simulated, lab tested,
and certainly modified.
This transceiver will perhaps be inscribed as part of the “384 kB/s
multimedia project“ of a multi-national team... Several
radio clubs members are ready to be involved
Tasks assignments is to be defined in details with project co-ordinator
Paul Rinaldo W4RI.
Further information will be given as soon as available.
73’s de Dominique F1FRV
Update (June 2001)
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