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A. StationPro II Operating Instructions
I. Introduction:
The W8ZR StationPro II is a
master station controller that integrates
seamlessly the switching and control
functions of complex amateur stations
consisting of up to three transceivers (or
receiver/transmitter pairs) and up to
three linear amplifiers. With the press of
a switch the StationPro II transfers to a
selected transceiver the operator’s key,
microphone, computer interface,
RTTY/packet, line in/out, speaker, and
numerous other control functions. A second switch transfers the transceiver’s RF output
to a selected linear amplifier, along with the amplifier relay and ALC control voltage.
The StationPro II was designed to be as flexible as possible, so as to
accommodate almost any amateur equipment, from vintage “boatanchor” rigs of the
vacuum tube era to computer-interfaced contemporary transceivers. Operators need not
fear incompatibility between their linear amplifiers and transceivers, since the StationPro
II includes a fast, silent relay driver that can accommodate any amplifier’s relay
requirements. It also incorporates several operator convenience features, including an ID
timer and an amplifier tune-up pulser. Easy firmware upgrades not only allow additional
new features but permit the operator to customize and upgrade the StationPro II as station
equipment changes. The RF relay circuits in the StationPro II introduce negligible VSWR
from 1.8-54 MHz and are conservatively rated at the U.S. legal power limit.
II. Specifications:
RF Relay Circuits
1. Frequency Range: DC – 54 MHz
2. Nominal Impedance: 50
Ω
unbalanced (SO-239 connectors)
3. Insertion VSWR: 1.1 or less (DC-30 MHz), 1.2 or less (54 MHz)
4. RF Power Rating: U.S. amateur legal power limit (1500 Watts)
Note: tested at 2500 Watts below 30 MHz, 800 Watts at 54 MHz.
Relay contacts rated at 12A DC continuous, 5000V dielectric rating (to coil)
5. Relay Control Voltage: +12V DC, supplied by control unit.
6. Relay Control Cable: Ethernet CAT5 cable, with RJ-45 connectors
