Ramsey Electronics FX-440 Manual page 7

SPECIFICATIONS FOR THE RAMSEY FX-440 440 MHz BAND
AMATEUR RADIO FM TRANSCEIVER:
General:
Frequency Range:
Tuning:
Programming:
Transmit Offset:
Mode:
Packet (Data} Operation:
Packet RX Audio:
Power Requirement:
Power Consumption:
Antenna Impedance:
Microphone Impedance:
T-R switching:
PTT circuit:
Semiconductors:
Transmitter:
Final Power Output
Final Output Stage:
Modulation:
Max frequency deviation:
Modulation distortion:
Receiver:
Circuitry:
Sensitivity:
Selectivity:
Squelch sensitivity:
Audio output:
Circuit access points:
FX-440
Any 20 MHz segment between 400 and
480 MHz
Diode-programmable PLL synthesis
12 front panel selected frequency pairs,
easily expandable by switches,
microprocessors, computers, etc. PLL
12.5 KHz steps with programmable offsets
Programmable: Simplex,
+
5, -5, Aux
NBFM
All rates incl. 9600 baud . 5-pin DIN jack
(TXD, RXD, PTT,
+
12VDC, GND}
I
Speaker, discriminator or true FSK
13.6V DC
+
/-10% (Negative ground}
1.0 A Transmit (for 3 watts RF output}
200 ma (Receive, no signal}
50 ohms
600 ohms or high impedance
PIN diodes
Solid State (for standard ICOM-type
speaker/mic connection}
10 IC's, 17 transistors, 24 diodes
(plus programming diodes}
2-4 watts RF
M RF630 or equivalent
True direct FM
+ /-
25 KHz,
+ /-
5KHz N BFM
Less than 5%
Double-conversion superhet
First IF: 21.4 MHz
Second IF: 455 KHz
12 db. SINAD less than 0.50
UV
±
7 KHz (-6db.},
±
15 KHz (-60db.}
Less than
O.
25 uv
More than 2.0 watts
COR, RSSI, PL tone input, FSK demod.
+
12V,
+
8V,
+
5V, PLL programming.
Ref. 5