MagicBox Specifications
General
System
160 through 10 meter operation
5.3" X 4.0 " PCB, fits TenTec TP-41 case
Approximately 120 parts
Beginning builder skills level project
Construction time approximately 8 hours
Power Supply
10-15 volts dc; 120 milliamps
RF Section
Receive Mode
Antenna to Receiver Input Loss:
Less than 2 dB, 1.8 - 28 MHz
Transmitter to Receiver Input Isolation:
Greater than 25 dB, 1.8 - 28 MHz
Transmit Mode
Maximum transmit power
Less than 10 watts
Transmitter Output to Antenna Loss:
Less than 0.25 dB, 1.8 - 28 MHz
Antenna to Receiver Input Isolation:
Greater than 90 dB, 1.8 - 10 MHz
Greater than 85 dB, 14 MHz
Greater than 80 dB, 28 MHz
Audio Section
(32 Ohm source and load)
Receive Mode
Receiver Audio Loss:
Less than 2 dB
Transmit Mode
Receiver Audio Isolation:
Greater than 200 dB
Keying
QSK Mode
Up to 50 WPM
Non-QSK Mode
1 second receiver delay
Transmitter Types
Solid state or cathode keyed tube
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