DX DXE-RXSHARE, Instructions Manual

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Introduction
Multi-operator contesting is challenging, especially
when a pair of operators are unable to hear what the
other operator is hearing. DX Engineering presents an
elegant but simple solution with the “RX SHARE
Audio Switch” – a flexible switching device that
allows two operators to hear exactly what they want to
hear, whenever they want to hear it. Audio from two
separate radios or one shared radio can be controlled by either operator’s three-position rocker
switch to select the specific audio they want fed to their stereo headphones. With the RX SHARE
placed between each operator, these selections can be changed independently by each operator
quickly and easily, at will and on the fly, with the light-touch rocker switches. The RX SHARE has
been extensively tested and used in competition by experienced, world-class contesters.
Multi-operator contesting in the “Multi-Two” or “Multi-Single” category often involves
simultaneous use of separate radios on a single band or on two different bands. The “run” operator
calls CQ and makes a constant string of contacts on one frequency. Meanwhile, the second operator
searches for new stations. Limited to transmitting only one signal at a time, the ops take turns as
soon as a new contact becomes available. Using the RX SHARE in the SEPARATE RADIOS
mode, each operator may choose to listen to the Radio 1 audio or the Radio 2 audio in both ears. Or,
at any time either operator can listen to the audio from one radio in each ear, allowing better
coordination and fewer interruptions. This translates to a higher QSO rate, higher scores and less
operator fatigue!
A single-operator using two radios in “SO2R – Single-Op, 2 Radios” mode has similar needs. The
operator may want to focus on just one of the radios, listening to the same audio in both ears. Or
the operator can hear the audio from each radio in one ear, allowing simultaneous CQ-ing and
tuning for new contacts. Advanced operators can even manage two pileups at once on different
bands! Doing these things effectively requires the easy, intuitive audio control provided by the RX
SHARE.
When one radio is shared by two operators, common during Field Day or training activities, the RX
SHARE is placed in the SHARED RADIO mode. Both operators can share the receive audio or
audio from a sub-receiver, if available, can be selected by either operator. The RX SHARE
provides a convenient way of splitting the audio output of a single radio.