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Time Variable Sequencer Unit - DXE-TVSU-1A
The DX Engineering TVSU-1A
Time Variable Sequencer Unit
is a microprocessor-based transmit /
receive control-signal delay unit. It provides 0-30 ms of delay, programmable in 2 ms increments, to as
many as five outputs tied to the CW keying or push-to-talk (PTT) lines. By controlling the receive-to-
transmit (and back) timing of linear amplifiers, preamplifiers, and other sensitive equipment, damage
caused by improper switching can be eliminated. This sequencer improves CW performance by
eliminating annoying leading edge chopping or truncating of Morse characters. This is especially important in contests or pileups
where sending accuracy is critical. Now RoHS compliant, the TVSU-1A can also control external devices such as preamps, active
antennas, or external relays that need to have power removed during transmit. Separate power-in and power-out jacks on the
front panel are used to control external power in this type of application. Two 2.1 mm power plugs and two 3.5 mm stereo
plugs are provided.
Benefits
Control timing of PTT turn-on, hang delay of PTT, amplifier hang delay, external antenna relay hang delay and turn-on
delay of auxiliary output
Dip switch settable delays of 0-30 milliseconds in 2 millisecond steps
Side tone generator that follows input of keyer or hand key not transmitter
Side tone pitch can be programmed from 300 to 1000 Hz in 50 Hz steps, front panel headphone jack with adjustable
volume
Supports CW full break in
Can control external power to our Active Receive Antennas and permit operation in closer proximity to transmit antennas
DXE-CW9-1K - Shielded Control Wire, Economically Priced, 9 Conductor, 1000 ft Reel
Economically priced DXE-CW9-1K is a 1000 foot box of high quality shielded outdoor FTP (Foil Twisted Pair) Cat 5e
cable. It features 4 Twisted pairs of 24 AWG solid wires with Al foil shielding plus a solid tinned copper drain wire -
providing a total of 9 conductors for DC switching applications. It has a polyethylene jacket and is rated for direct
burial. A nice feature is the "rip cord", which allows for easy stripping of the heavy jacket without worry about nicking
or accidentally cutting the conductors. Excellent for use in all outdoor applications of switching, networking, data
transfer and phone lines. As a data transfer line, it supports 10/100/1000 Mbps.
The Shielded Control Wire may also be purchased 'by the foot' - call DX Engineering for details.
DXE-CW9S - Shielded Control Wire, 9 conductor stranded, per foot
DXE-CW9S is a high quality shielded outdoor cable. It features 9 #24 AWG stranded conductors with aluminum foil shielding plus
a #24 stranded tinned copper drain wire. This gives you 8 switch positions plus common ground - plus the separate shield. It has a
gray PVC jacket. This cable is ideal for DX Engineering Remote Antenna Switches and Four Square arrays, and
should be considered for any low-current custom remote switching application you have - such as receiving antenna
arrays. Order by the foot in the length you require. Price shown is per foot. A nice feature is the "rip cord", which
allows for easy stripping of the heavy jacket without worry about nicking or accidentally cutting the conductors.
KLE-11055 - Klein-Kurve Wire Stripper / Cutter 11055, 18-22 AWG
Klein Tools Klein-Kurve wire strippers are ideal for stripping solid (10-18 AWG) and stranded (12-20 AWG) wire cleanly
and easily. The 7 1/8 in. strippers also have precise shear-type blades to cut copper wire nicely, easy-to-read markings on
both sides, and extra-soft grips and curved handles for comfort.
DXE-CIT-1 - F Connector Tightening Tool
The CIT-1 installs and removes F connectors in high density and hard to reach locations, and is the only tool that works
with bent coax. Only finger force is required. Provides enough leverage to achieve a 30 in/lb tightening force by hand.
Helps insure proper connections thereby reducing the potential of loose connector related service calls.
