565 manual
September 2003
Part #74279
Printed in USA
26
(66) AMP KEY 1
ORION is equipped with two sets of
amplifier keying outputs to allow two linear
amplifiers to be simultaneously connected to
the transceiver. AMP KEY 1 (and TX OUT 1
/ TX EN 1, described next) utilize the ANT 1
antenna connector for interfacing to an amp.
AMP KEY 1 is typically used as a non-QSK
keying connection for a linear amplifier.
However, it is acceptable to connect QSK
linear amplifiers that do not employ a full
break-in keying loop to this jack as well.
AMP KEY 1 (and AMP KEY 2) are open
collector outputs. RF appears
approximately 15 mS after AMP KEY
contacts close.
An adjustable delay (called
EXT T/R Delay
1
) gives the operator the ability to keep the
amplifier keyed longer, preventing drop outs
between words of SSB or CW operation.
EXT T/R Delay 1
is found in the TX
submenu under MENUS.
The external amplifier key line should not
apply more than +100V (output inactive) nor
should it draw more than 250 mA (output
active). Many older linear amplifiers like
those manufactured by Collins, Drake, and
Heathkit have a higher voltage on the
keyline. Such amplifiers require a relay or
transistor switch between the ORION AMP
KEY 1 jack and the amplifier keyline. If you
are unsure if your amplifier is suitable,
please consult the operator’s manual for
your amplifier or contact the Ten-Tec service
department. See chapter 4 for a complete
description on interfacing a linear to the
ORION.
(67) TX OUT 1 / TX EN 1
Many QSK linear amplifiers are equipped
with a full break-in keying loop to assure
proper sequencing of amplifier keying when
operating full break-in CW. TX OUT 1 and
TX EN 1 are used for a full break-in linear
amp using ANT 1.
TX OUT and TX EN should be connected to
the corresponding QSK loop IN and OUT
jacks on your amp. On a Ten-Tec QSK
amp, TX OUT is connected to KEY IN and
TX EN is connected to KEY OUT via
shielded cables (consult the operator’s
manual of your non-Ten-Tec QSK amp for
the proper loop information).
To use the full break-in keying loop, it must
be enabled from the MENUS. The keying
loop is turned on and off via the TX
submenu in the MENUS (see the
TX MENU
description in Chapter 3). Note: If the loop is
turned on, and no connections are made it
will prevent the ORION from transmitting.
See chapter 4 for a complete description on
interfacing a linear to the ORION.
TX EN can also act as a transmit inhibit
input if it is desirable to prevent ORION from
transmitting until other station accessories
have been switched. Example: The last
item keyed from a sequencer used for VHF
transverter operation. To use the loop in
this manner, turn the keying loop on in the
MENUS. Connect inhibit line to the TX EN
jack. The ORION will not transmit until a
closure to ground appears at the TX EN
jack.
(68) AMP KEY 2
AMP KEY 2 is for connection of a second
linear amplifier to be used with the ANT 2
antenna connector.
AMP KEY 2 is typically used as a non-QSK
keying connection for a linear amplifier.
However, it is acceptable to connect QSK
linear amplifiers that do not employ a full
break-in keying loop to this jack as well.
AMP KEY 2 (and AMP KEY 1) are open
collector outputs.
An adjustable delay (called
EXT T/R Delay
2
) gives the operator the ability to keep the
amplifier keyed longer, preventing drop outs
between words of SSB or CW operation.
EXT T/R Delay 2
is found in the TX
submenu under MENUS.
The external amplifier keyline voltage
warning as described for AMP KEY 1 also
applies to AMP KEY 2. See
(66)
.
See Chapter 4 for a complete description on
interfacing a linear to the ORION.
(69) TX OUT 2 / TX EN 2
TX OUT 2 and TX EN 2 are used for a full
break-in linear amp using ANT 2.
TX OUT and TX EN should be connected to
the corresponding QSK loop IN and OUT
jacks on your amp. On a Ten-Tec QSK
amp, TX OUT is connected to KEY IN and
TX EN is connected to KEY OUT via
