Adalm-Pluto For Amateur Radio
 Analogue Devices Adalm Pluto SDR
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The Adalm-Pluto is a development board designed by Analogue Devices. For more information see the description overview. This module can be used a basic building block to construct equipment for the 70cm 430MHz to 6cm 5.8GHz Amateur Bands. The Pluto along with a laptop can effectively be used to replace Transverters and ATV Transmitters/Receivers that were commonly used on these bands. A number of Pluto module boards are currently being developed.
Evariste F5OEO has modified the Pluto firmware to provide DATV capabilities, but also provides a TX control voltage output on the GPI0 connection on the Pluto board. All the standard functions appear to still work with the SDR Console software. The firmware is easily updated in the Pluto by dropping the firmware file into the main storage drive of the Pluto.
Full details on how the firmware is updated can be found at https://wiki.analog.com/university/tools/pluto/users/firmware
For the latest version of the F5OEO firmware see http://firmware.hackhamradio.com/
F5UII webpage on DATV using the Pluto.
BATC website Custom DATV Firmware for the Pluto
The EME243 is an interface module that has been designed to provide a PTT output from the PLUTO GPIO connection when used with the F5OEO firmware. The board uses a PDTC143XT digital transistor that has an open collector that can be used to pull a voltage low via a suitable resistor, when going into PTT mode. The PDTC143XT collector to emitter is rated at +50vdc and 100mA maximum, so it should only be used to switch low current logic circuitry and relays.
The module is easily fitted to the Pluto, and is a low risk operation. BUY A PLUTO PTT MODULE
- 1/ Remove the Pluto case covers.
- 2/ Carefully solder the EME243 module to the Pluto PC board as shown in the picture below.
- 3/ Remove the front cover by undoing the SMA connector nuts and washers.
- 4/ Carefully drill a hole to suit the RCA connector, and fit the connector.
- 5/ Reassemble the front cover and lightly tighten the SMA connector nuts.
- 6/ Fabricate a cable to connect the EME243 module to the RCA connector for the PTT output.
- 7/ Test that the module is working by fitting a 1K resistor from the TX output to an external +12vDC power supply, and using the SDR Console software go into TX mode making sure that the TX output goes from +12vdc to a low voltage.
Picture shows how the EME243 module is fitted to the Adalm Pluto.
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Picture shows the Pluto GPIO0 and the TX output connections from the PDTC143XT Transistors collector.
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Is a RF Amplifier Module board designed for either the 70cm or 23cm bands allowing the Pluto to be able to be used as a Transceiver using the SDR Console software.
To be updated
Top view of the Prototype Pluto-Charon for the 23cm band
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Bottom view of the Prototype Pluto-Charon for the 23cm band
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S21 Receiver gain showing the frequency response
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S11 RX Input showing the return loss across the 23cm band
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S11 RX Output showing the return loss across the 23cm band
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S21 Transmit Amplifier gain showing the frequency response due to the HFCN-1400 low pass filters.
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S11 TX Input showing the return loss across the 23cm band
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S21 Relay isolation from the antenna to RX input amplifier in TX mode using a 18uH inductor across the NC relay contacts.
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Shows the TX output when driven with the Adalm PLUTO with +2dBm input
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Shows the TX output and second harmonic when driven with the Adalm PLUTO with +2dBm input
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Is a Module board designed for either the 13cm or 9cm bands allowing the Pluto to be able to be used as a Transceiver using the SDR Console software.
To be updated
Top view of the Prototype Pluto-Styx for the 13 and 9cm bands
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Picture
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Is a Module board designed for the 6cm band allowing the Pluto to be able to be used as a Transceiver using the SDR Console software.
To be updated
Mini-Kits
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Picture shows
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