coupling unit used in DX1 is very efective and requires no adjustment.
It provides predictable coupling loss and very high directivity. Power
flowing from J1 to J2 is sampled by the transformers so that it adds in
phase at J3 and cancels at J4. Power flowing from J2 to J1 behaves
identically, but in this case adds in phase at J4 and cancels at J3.
DX1 is very useful tool for the RF development, for example: to improve
antennas, amplifiers, or other transmission lines. The DX1 separates
the power flowing in each direction on a transmission line. By
measuring the power at each connector, an accurate measurement of
forward and reflected power can be made. This is very useful when
matching an antenna, the input to an amplifier, or other devices. (SWR
bridges and power meters use a similar coupler, often with inferior
performance, driving a simple diode detector.)
oscilloscope may be connected to the forward power connector and used
as a monitor scope. When used with a spectrum analyzer, the DX1 can be
used at either port to observe the transmitted spectrum. If a sweeper
is substituted for the transmitter, then swept-frequency measurements
can be made.
DX1 is a dual directional coupler that provides
high directivity. It can be used to sample a transmitter's forward and
reflected power output.
The DX1 is built and tested by TECHNO LAB USA
Frequency Range 1 MHz to 200 MHz
Coupling loss 20 dB (29.8) +/- 0.25 dB
Directivity 30 dB typical
Power Rating 30 dB coupler, 250 watts
$ 89.00 + $ 9.50 shipping
for all US regions
To order, click Storefront button to go to shopping cart; select "RF Test Equipment"
Inquiries from outside the US, please email for shipping quote
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