PA LNA TRX TRCVR RF Relay Sequencer, 4 ports/3 events

Description

DESCRIPTION:
Event sequencer for proper RX to TX transmition, and the return to RX mode. This sequencer based on modern STM32F0 CPU. Internal CPU clocking
guarantees
high precision and long-term stability, no capacitors, no
external timing network, everything is digital
.
Sequencer has four high current MOSFET switches on output, they switching in 3 step (stage) with delay. Delay time can be selected by onboard jumper from two values - 15ms or 45ms.Three of MOSFET output port is "OPEN DRAIN" and "ground" active - OUT1, OUT2 and OUT3. Fourth MOSFET output port has external DC +12-30 input line (IN+) that switched ON (to OUT+ line) in TX mode and has same timing diagram as OUT3.
Output ports not protected, just bare DRAINS, so - be carefull, don't forget to use diodes in parallel with relay coils.
Sequencer can be switched to TX or RX mode by external footswitch only (active state - ground).
TECHNICAL SPECIFICATION:
* Board size is 70 x 45 mm
* Output ports: 4 ports, 50v/3a max
* Input ports: Footswitch (active state - ground)
Delay time: 15 ms or 45 ms, onboard jumper selectable
DC input: 5-12VDC, >0.1A
You will get soldered and tested PCB with uploaded firmware.
Packaging:
The product dispatched carefully packed
. We use only high quality and new packaging materials.
Please read carefully product title, description and include list. Any questions are welcome.
If you received broken or defective parts please contact us first, because we can resolve this problem in best way.
Handling time:
3 business days to process international orders required after receiving cleared payment. This does not include the number of business days the shipping service will take to deliver the item to you. We can upload a tracking number during handing time even before your package was transferred to logistic company for the delivery.
Shipping:
We dispatch your order during 1-3 business day. Take note, international shipping is more complicated and longer than domestic, that's why when you buy internationally it mean you are agree to wait for the package. For Economy International Delivery default stated time is 2-4 weeks. Some countries may take longer because of your country custom regulation rules or postal service. USA usually takes 3-4 weeks; Europe 2-3 weeks; Australia 3-4 weeks; Germany 2-3 weeks. All other countries 3-4 weeks default delivery time.
We are not accept any claims for shipping time! Economy Shipping mean we'll send your items with Air Mail, but we cannot promise it will be fast, because it depends on post service, flights schedules, weather accidents, custom processing and other things that out of our control.
We ship internationally and using
Standart International service (with tracking)
Usually it takes 2-4 weeks.
73!