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I0JXX SEQJXXBOX Sequencers

I0JXX SEQJXXBOX Sequencers are advanced switching control units for preamplifiers, power amplifiers, transceivers and transverters typical of VHF, UHF and SHF amateur and commercial radio systems. When using independent low-noise mast-mounted or inline preamplifiers and inline power amplifiers, the correctly sequenced timing of PTT and disconnect signals must be sent before keying a transceiver or transverter. The required task of preventing preamplifier burnout, power amplifier hot switching and potential relay damage is very well handled by the SEQJXXBOX. Featuring independently configurable time delay sequencing for SSB and CW modes, the SEQJXXBOX has four separate output relays which are tied in series to ensure the proper switching sequencing of every critical component in the receive-transmit chain. Configurations and functions are entered with a four-button control and Status info in RX and TX is displayed on a 2x16 alpha-numeric blue-tone readout. Independent front panel switches for turning on or off the Preamp, the Power Amp, and the Sequencer, along with programmable control over CW Break-In and relay timing provides intuitive and helpful operational flexibility. Two rear panel 8-screw barrier strips handle all input and outputs, so simple stripped lead wiring is required from all peripheral components. A simple Foot Switch for SSB PTT is provided with each unit. FEATURES of the I0JXX SEQJXXBOX Sequencer: • Switching delay time RX>TX TX>RX Every mode from 50 to 500 mS (step 10 mS) • Switching delay time CW TX>RX from 100 to 900 mS (step 100 mS) • CW Break-In operations configurable (enabled by default) • Name or Call Sign on display (up to 6 alphanumeric characters) • Display lighting 2 modes: always on / on only during configuration SPECIFICATIONS of the I0JXX SEQJXXBOX Sequencer: INPUT: MIC-PTT (foot switch) CW-KEY (3 contacts, straight key or Iambic paddle Display: LDC 2 lines per 16 letters, blue color (with contrast adjustment) Menu access: 4 front panel pushbuttons Power Requirement: 12 VDC @ 180 mA TX; 40 mA RX. (No internal battery) Dimensions, WHD: 3.937 x 1.969 x 4.331in. (100 x 50 x 110mm) Weight: 1.343 lbs. (650 g) The I0JXX SEQJXXBOX is an indispensable tool for proper and successful operation of each crucial component in a VHF, UHF, or SHF station.

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