micro
HAM ©
2016
All rights reserved
Important Considerations
When Station Master Deluxe is used with
micro
HAM Keyer:
micro
KEYER,
micro
KEYER II, DigiKEYER, DigiKeyer II, CW Keyer, MK2R, or MK2R+
With
micro
HAM keyers, Station Master Deluxe monitors both the PTT output of the radio and the PAPTT signal
from the keyer. However, with VOX operation or FSK operation using MOX, the radio can switch to transmit and
generate power before Station Master Deluxe is able to switch all of the connected devices.
•
Be sure that Station Master Deluxe is connected according to the installation instructions.
•
Set the INHIBIT (INH) time slightly longer than the Switch Delay, any T/R delay in your power amplifier,
and/or longest sequencer lead delay.
•
Make the PTT lead time in the KEYER equal to the INH time in Station Master. If your transceiver does
not have an inhibit input, make the PTT lead time slightly longer than the longest Switch Delay, T/R delay
or sequencer lead time.
WARNING:
If your transceiver does not have an INHIBIT input or INHIBIT is not connected, the sequencer
can
not
protect your devices and prevent hot switching. Using VOX or FSK with MOX can result in switching
antennas with power applied when split TX and RX antennas are used. We strongly recommend that
you NOT use sequencer outputs or split TX/RX antennas without an INHIBIT connection when using a
power amplifier!!!
When Station Master Deluxe is used without a
micro
HAM keyer:
Station Master Deluxe monitors the PTT output of the transceiver. This means that the radio has already
switched to transmit and can be generating power before Station Master Deluxe has switched from receive to
transmit.
•
Be sure that the SMD is connected according to the installation instructions.
•
Use zero (0) lead time for all sequencer outputs.
•
Set the INHIBIT (INH) time slightly longer that Switch Delay or any T/R delay in your power amplifier.
WARNING:
If your transceiver does not have an INHIBIT input or INHIBIT is not connected, the sequencer
can
not
protect your devices and prevent hot switching. Antennas can be switched with power applied when
separate TX and RX antennas are used. We strongly recommend that you NOT rely on Station Master
Deluxe to bypass receive devices or use split TX/RX antennas without an INHIBIT connection when
using a power amplifier!!!
TIP:
If your radio does not have an INHIBIT input you may be able to use Station Master Deluxe to
bypass receive devices or for split TX/RX antennas. To do so, the transceiver PTT must be controlled
entirely by footswitch or computer generated PTT;
VOX, MOX and QSK can not be used.
Connect the footswitch and computer PTT output in parallel to Station Master's PTT IN connection. Set the Lead
time of one sequencer output slightly longer than any other lead time, Switch Delay and/or the T/R delay in your
power amplifier and connect this sequencer output to the PTT input of your transceiver. The sequencer output
used should be configured for common ground (sink) or use one of the isolated relay outputs B7-B10.
93
