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4-way PTT sequencer manual

This 4-way PTT sequencer is product designed for PTT switching from one input to four outputs with different (fixed) delay. You can split PTT signal to 4 independent devices with different timing: LNA, PA, RF relays etc. This device also protects your PTT output from external accessories. There is optocoupler isolator between PTT input and all four PTT outputs. Outputs are switched to ground when PTT is active. There are FET outputs without any additional delays.



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Applications
Sequencer
Sequencer Timing
Schematic example
Product details


Applications

4-way ptt sequencer by qro.cz hamparts.shop



Sequencer

assembled version in box

4-way ptt sequencer in box assembled qro.cz hamparts.shop



4-way ptt sequencer assembled qro.cz hamparts.shop

assembled board version

4-way ptt sequencer assembled board qro.cz hamparts.shop


Sequencer Timing

Here is an example of a timing measurement. The first state change is from RX to TX, where PTT IN is connected to ground. It triggers a timing circuit where T0 is no delay, T1 is delayed by 60 ms, T2 by 120 ms and T3 by 180 ms. The outputs are like switches to ground - the active output is connected to ground. When transitioning from TX to RX, reverse timing occurs. T0 is still 0 ms (it is analog connected to PTT IN), T1 is delayed by 180 ms, T2 by 120 ms and T3 by 60 ms.

4-way ptt sequencer timing qro.cz hamparts.shop



4-way ptt sequencer timing qro.cz hamparts.shop


Schematic example

There is an example for positive voltage switch with no additional delay. You can use relay but do not forget to additional delay by relay.

4way ptt sequencer schematic example by qro.cz hamparts.shop



Product details

Included in package

Sequencer assembled and tested
DC plug (box version) - image
4pcs self adhesive feet pads (box version) - image

Box dimensions (mm) 58x50x24 mm - al box
PCB dimensions (mm) 50x50.4 mm
Weight brutto (kg) 0.045 (board) to 0.12 (in box version) kg

Manufacturer:

Ing. Jan Šustr
ID 05476356, VAT CZ8407024780
Palachova 1777/7, 591 01 Žďár nad Sázavou, Czech republic, Europe

General instructions:

Please also read general instructions before handling the product.

European Union Declaration of Conformity

Manufacturer Ing. Jan Šustr (QRO.cz):

ID 05476356, VAT CZ8407024780
Palachova 1777/7, 591 01 Žďár nad Sázavou, Czech republic, Europe

declares that the assembled product:

4-WAY PTT SEQUENCER

is compatible with the relevant Union harmonisation legislation directives:
EMC Directive 2014/30/EU
ČSN EN 61000-6-3 ed. 2
ČSN EN 61000-6-1 ed. 2 (333432)

On behalf of Ing. Jan Šustr (QRO.cz)
Ing. Jan Šustr, CEO
22th May 2023

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55.66 € (tax incl.)
This is simply 4-way analog splitter. Designed for no-delay PTT switching. From one input to four outputs. You can split PTT signal to four independent devices.
65.34 € (tax incl.)
This is simply 4-way analog splitter. Designed for no-delay PTT switching. From one input to four outputs. You can split PTT signal to four independent devices.
38.72 € (tax incl.)
This is simply 4-way PTT sequencer, designed for PTT switching from one input to 4 outputs with different (fixed) delay.
65.34 € (tax incl.)
This is simply 4-way PTT sequencer, designed for PTT switching from one input to 4 outputs with different (fixed) delay.
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