Transverter Operation - Yaesu FT-1000MP Operating Manual

Operation
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Transverter Operation
Although Yaesu Musen does not presently
manufacture transverter units, the FT-1000MP
can be used with some transverter units from
other manufacturers, or older Yaesu units, such as
the FTV-107R and FTV-707.
Transverter Operation Overview
Transverters allow operating your HF trans-
ceiver on VHF and UHF bands. Many commer-
cially available transverters provide coverage of
the 50, 144, and/or 430 MHz amateur bands.
During receive, the VHF or UHF input passband
is amplified, filtered, and mixed with a local signal
to provide a "down-converted' output falling within
the receive range of the FT-1000MP (usually 28 ~
30 MHz). Likewise, a low-level 28 ~ 30 MHz
transmitted signal is sent to the transverter where
it is again mixed with a local signal, band-pass
filtered, and amplified several stages to provide a
"up-converted" VHF or UHF signal output.
The TRV jack on the rear panel of the trans-
ceiver provides a variable low-level (approxi-
mately -6 dBm, 100 mVrams @ 50 2) RF signal
output used to drive the transverter circuitry. This
low-level output should be connected to the trans-
verter RF IN jack (or equivalent).
Slide the TRV switch on the ALC Unit to the
"TRV' position to disable the HF power amplifier.
Use the front panel RF PWR control to adjust the
low-level drive level applied to the transceiver's RF
input jack (-6dBm maximum). Check with the
documentation sup- TRV Switch
plied with your trans-
verter to ensure this (( ¢
level is adequate for AN al
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All RX
operation (Tx excita-
tion). If you happen to
forget to adjust this
setting, you might end
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FT-1000MP in YQ tr re G i OUTPUT
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AC
Example of Transverter Station Interconnections
page 70
wi
FTV-707
up transmitting full HF power output while also
exciting your transverter.
Note - The switching circuitry of many trans-
verters is not designed to handle the high power
output direct from the amplifier section of a trans-
ceiver. Do not connect your transverter directly to
the FT-1000MP's ANT jack.
Transverter Operation
A transverter station setup example is shown
below. It utilizes the RX ANT IN jack for connection
of the 28 MHz RX (converted) signal, which allows
keeping the installed HF antenna connected di-
rectly to the transceiver. The TRV output from the
rear panel of the tranceiver must be connected to
the RF IN jack of the transverter.
O During transverter operation, remember to
move the TRV switch on the ALC Unit to the
"TRV" position, and adjust the RF PWR control
fully clockwise (unless a lower drive level is
needed).
OC) Press the RX ANT switch to receive the "trans-
verted" (downconverted) VHF input. Press @ |
to select 28 MHz for operation, and refer to the
documentation provide with your transverter for
tune-up and operation.
Transverted Frequency Display
Most transveter outputs usually fall some-
where within the 10-meter band (28~30 MHz),
which requires mentally "substituting" the actual
MHz digits of frequncy digits of the operating
frequency in place of the displayed 28.xxx or
29.xxx panel frequency.
You can use menu selection 3-3 to temporarily
change the MHz panel digits to a VHF or UHF
band (50, 144, or 430) to give a direct-reading
frequency display during transverter operation.