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RX Audite SDR Switch

This RX Audit splitter/switch is very powerful device combines TRX switch, RX splitter, RF limiter protection for both RX outputs, INBAND RX antenna input and optional RX preamplifier. You can share your main TX/RX ANT to two RX with RF power limiter protection.

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version
  • classic
  • with preamp
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Description

This is very powerful device that combines TRX switch, RX splitter, RF limiter protection for both RX outputs, INBAND RX antenna input and optional RX preamplifier. You can also share your main TX/RX ANT to two RX with RF power limiter protection.

This is ideal solution for Spectrum Panadapter, WebSDR or Skimmer Server - RBN.

When the controller is OFF then main TX/RX antenna goes to the SDR RX output - with 10 mW RF limiter protection. You can switch ON preamplifier even you left controller OFF by the POWER switch. When the controller is ON, Main TX/RX antenna is shared between TRX and SDR outputs. During TXing, the SDR RX output can be connected to the internal dummy load or to the INBAND RX antenna input. You can switch the SDR RX output to the INBAND RX ANT port not only while the TRX is TXing, but by the front panel switch, it can be switched all time. Optional HIGH IP3 internal preamplifier can be used for insertion loss compensation. Additional gain is variable, up to 14 dB.


Main functions

  • Frequency range: 0.1 to 60 MHz
  • Main TX/RX ANT splitter to two RX
  • RX RF limiter protections for both RX outputs
  • HPF (> 100kHz), high voltage and current protection at both RX outputs
  • RX ANT (INBAND) input - works only for SDR output
  • TX-RX switch controlled by the PTT
  • Designed for 2nd RX, WEB-SDR, SKIMMER or Panadapter
  • Controller OFF = TX/RX ANT port to SDR RX out via RF limiter protections - Skimmer/web-SDR
  • Controller ON = TX/RX ANT port splitted to TRX and SDR RX out via RF limiter protections
  • TRX TX to main TX/RX ANT = SDR RX out to dummy load or INBAND RX ANT input via RF limiter protections - see jumper switch
  • Front panel Switch - SDR RX output to RX ANT (INBAND) during transmitting or all time
  • Very high isolation when TRX transmitting and SDR goes to RX ANT (INBAND) 100 dB @ 14 MHz and 80 dB @ 50 MHz
  • DC plug included
  • Preamplifier as option version with PREAMP: insertion loss compensation, up to 14 dB of additional gain
  • Preamplifier could be ON for SDR even controller is OFF
  • Please, see also Frequently Asked Questins - FAQ
  • ASSEMBLED and TESTED VERSION

ONE black box but many different parts inside

  • TX/RX switch controlled by PTT signal
  • PTT splitter (IN/OUT) in sniffer mode (IN directly to OUT) or output PTT FET switch - image
  • 2-way RX splitter with low loss
  • 2x RF limiter RX protections - the best on the market :)
  • RX switch for RX ANT (INBAND) (only for SDR output) - settings
  • Both antennas with HPF > 100 kHz (blocking AC noise)
  • RX preamplifier (high IP3, 18 dB gain) with variable ATT - OPTIONAL - manual link
  • RX lines with High Voltage protections > 60 V AC
  • RX lines with SuperFuse current protections > 100 mA
  • Very high isolation TX to SDR, between RX output ports, INBAND RX and TX/RX ANT port

Parameters

  • Supply voltage DC + 12 to 14 V (13.8 V recommended)
  • Supply current DC max. 0.7 A with preamp
  • Maximal TX power 250 W, recommended 200 W
  • Very high isolation when TRX transmitting and SDR goes to RX ANT (INBAND) 100 dB @ 14 MHz and 80 dB @ 50 MHz
  • PTT IN open PTT = RX, GND = transmitting
  • PTT OUT sniffer (IN = OUT) or output FET (max. 35V DC and 0.5 A) - image
  • PTT is not designed for QSK but you can use witch right PTT lead/tail/TX delay time: min. 20/20 ms
  • Default configuration SDR to the internal dummy load (older 2211xx to RX ANT (INBAND) input) while TRX transmitting - settings
  • Optional Preamp preset to insertion loss + 6 dB (total gain about 10 dB)
  • Low insertion loss see measurements picture
  • TX insertion loss less than 1 W from 100 W @ 28 MHz

RF limiters

  • Limiter for RF signal to + 13 dBm = 20 mW (could be + 17 dBm) @ 50 Ohm
  • Current SuperFuse - the only at market
  • Can survive high input power (current) for long time
  • The soft clipping reduces the IMD products of a classic hard diode clip limiter

VERSION WITH PREAMP

Internal Preamplifier module

  • Preamplifier could be retrofitted also by you - customer
  • High IP3 preamplifier module with 18 dB gain
  • With 2SC5551 transistor
  • Real OIP3 is +34 dBm
  • Preset to 40 mA @ 13.8 V
  • Low Noise Figure (NF) < 2 dB (60 mA 50 MHz)
  • Variable gain by output ATT
  • Preset to 10 dB for TX/RX ANT to both RX outputs = insertion loss + about 6 dB (1S) of gain
  • Bypass relays
  • Could be switched ON even the controller has got power switch OFF - preamp for SDR output

Available as

ASSEMBLED: classic version - ready to use
ASSEMBLED: preamp version - ready to use

RECOMMENDATIONS TO BUY:

Manual

If you want to know more please check our wiki with RX Audite Switch manual.



rx audite sdr splitter switch by qro.cz hamparts.shop



rx audite sdr switch splitter by qro.cz hamparts.shop



rx audite sdr switch splitter by qro.cz hamparts.shop



 classic version

rx audite sdr switch splitter classic version without preamp module by qro.cz hamparts.shop



version with preamplifier

rx audite sdr splitter switch version with preamp module by qro.cz hamparts.shop



optional preamplifier module

rx audite sdr splitter switch version with preamp module by qro.cz hamparts.shop



example for External Relays

- You can use another 8 external relays. You can control another 8 things you like. It is simply 8 x ON/OFF
- Outputs can be configured as: switching to ground + voltage
- Output voltage could be the same as controller supply voltage or different - connected to Vext pin at connector

rx audite sdr switch how to set up by qro.cz hamparts.shop



rx audite sdr switch how to set up by qro.cz hamparts.shop



example with 2-way small splitter

- You can use passive 2-way of 3-way RX splitter (at the RX SDR output) and split signal to more receivers without any bad effect of the insertion loss

rx audite sdr switch with passive 2-way or 3-way rx splitter by qro.cz hamparts.shop



TX way parameters

rx audite sdr splitter measurement by qro.cz hamparts.shop



BOX OFF: TX/RX ANT to SDR out

rx audite sdr splitter switch measurement by qro.cz hamparts.shop



BOX ON: TX/RX ANT to TRX and SDR out

rx audite sdr splitter switch measurement by qro.cz hamparts.shop



Isolation between RX ports

rx audite sdr splitter switch measurement by qro.cz hamparts.shop



BOX OFF: TX/RX ANT + PREAMP to SDR

rx audite sdr splitter switch measurement by qro.cz hamparts.shop



TRX/RX ant + PREAMP to TRX and SDR

rx audite sdr splitter switch measurement by qro.cz hamparts.shop



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Product Details

Data sheet

type
ASSEMBLED
design
in enclosure
usage
RX + TX
impedance
50 Ohm
front-end protection
input and output
frequency range
0.1 MHz to 60 MHz

Specific References

ean13
1000090109309
Reviews(1)
Overall rating
0
1 Review
We used RX Audite throughout WW CW and it worked wonderfully. Congratulations! Nice equipment!! We use a single SDR RSP1A + CW Skimmer Server + Aggregator. Despite the SDR only working on 3 bands at the same time and the old notebook (I7 second generation + 8GB of RAM) we didn't notice a loss of performance and the information arrived in great quantity/quality. We had a quality leap in the multiplier hunt. Now let's calmly study what we will do to improve what we already have based on what was observed during the contest.

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The splitter or combiner is a very useful device. It can provide equal voltages, equal current, or equal power to matched or unmatched loads.
The splitter or combiner is a very useful device. It can provide equal voltages, equal current, or equal power to matched or unmatched loads.
The splitter or combiner is a very useful device. It can provide equal voltages, equal current, or equal power to matched or unmatched loads.
The splitter or combiner is a very useful device. It can provide equal voltages, equal current, or equal power to matched or unmatched loads.

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