Ramsey Electronics FZ-146 Specifications download pdf (Page 5)

FX-146 • 5

SPECIFICATIONS FOR THE RAMSEY FX-146

General:

Frequency Range: Any 20 MHz segment between 140 and 180

MHz

Tuning: Diode-programmable PLL synthesis 12 front

panel selected frequency pairs, easily

expandable by switches, microprocessors,

computers, etc.

Programming: 5 KHz steps with programmable offsets

Transmit Offset: Programmable: Simplex, +1.2, -1.2, Aux

Mode: NBFM

Packet (Data) Operation: All rates incl. 9600 baud . 5-pin DIN jack

(TXD, RXD, PTT, +12VDC, GND)

Packet RX Audio: Speaker, discriminator or true FSK

Power Requirement: 13.6V DC +/-10% (Negative ground)

Power Consumption: 1.0 A Transmit (for 5 watts RF output) 200

ma. (Receive, no signal)

Antenna Impedance: 50 ohms

Microphone Impedance: 600 ohms or high impedance

T-R switching: PIN diodes

PTT circuit: Solid State (for standard ICOM-type

speaker/mic connection)

Semiconductors: 10 IC's, 16 transistors, 24 diodes (plus

programming diodes)

Transmitter:

Final Power Output: 4-6 watts RF

Final Output Stage: MRF237 or equivalent

Modulation: True direct FM

Max frequency deviation: +/- 25 KHz, +/- 5KHz NBFM

Modulation distortion: Less than 5%

Receiver:

Circuitry: Double-conversion superhet

First IF: 21.4 MHz

Second IF: 455 KHz

Sensitivity: 12 db. SINAD less than 0.35 uv

Selectivity: 7 KHz (-6db.), 15 KHz (-60db.)

Squelch sensitivity: Less than 0.25 uv

Audio output: More than 2.0 watts

Circuit access points: COR, PL tone input, FSK demod. +12V,

+8V, +5V, PLL programming.

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Ramsey Electronics FZ-146 Specifications Page 5