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Operation – Elecraft XV Transverter Owner's Manual User Manual

Page 20

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Operation

Once your transverter is hooked up to your antenna system and other
equipment as described under Installation (page 4), operation consists of
turning on the transverter and setting the output power.

Cautions to Avoid Spurious Emissions From Your Station

Do not use an antenna relay to switch the 28 MHz rig output between an
HF antenna and the transverter unless it has adequate isolation to ensure
that no RF energy leaks to the antenna when it is not selected. Most
normal coaxial relays do not provide adequate attenuation

When using a K2, do not use the 2nd antenna position. The K60XV
Adapter provides a well isolated transverter interface allows you to have
an HF antenna connected to the K2 without concern for spurious radiation
when using the transverter.

Turning the Transverter On

If an Elecraft K3 or K2 is being used for the I.F., the transverter power is
turned on automatically when the band assigned to the transverter is
selected. The front-panel band label on the transverter will light indicating
that power is applied and the transverter is operating.

When a rig other than an Elecraft K2 or K3 is used for the I.F., the
transverter is made active by pressing the front panel switch to turn the
transverter on. The front-panel band label on the transverter will light.

Power Output Control

Set the output power on your 28 MHz rig for the transverter power output
desired. Do not exceed 20 watts output from the transverter in CW or
SSB. Limit the output to 10 watts in FM or data modes that require a
steady carrier. On the transverter front panel, a yellow LED indicates 20
watts. Green LEDs indicate levels below 20 watts and red LEDs indicate
levels above 20 watts.

Local Oscillator Power Control

To minimize frequency drift you may want to have the local oscillator
running at all times, even when the transverter is inactive. However, in
some installations it is possible that a harmonic of the local oscillator
may produce unwanted birdies when operating on other bands.

In the Installation section you set up the local oscillator to switch on and
off with the transverter power.

The behavior of the local oscillator may be selected by a 2-terminal
shorting block at JP9 as follows:

JP9, 1-2: Default: The local oscillator power goes off whenever
the power is turned off or, when used with an Elecraft K2 or
K3, the transverter is deselected by changing bands.

JP9, 2-3: The local oscillator power is on whenever the
transverter power is on or, when used with an Elecraft K2 or
K3, whenever the K2 or K3’s power is on even though the
transverter band may not be selected.

JP9, 4-5: The local oscillator power is on whenever 12 volts is
applied at J7 on the back panel regardless of the state of the
power or band switches. This is the recommended jumper
setting if you have installed the optional crystal oven so the
oven will remain at operating temperature.

Regardless of the jumper setting you choose, power to the receive
circuits (other than the local oscillator) is turned off except during
receive mode. This avoids the possibility of strong signals leaking into
the I.F system when several transverters are used with the same H.F. rig.