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Reeve UPC-1 Installation And Operation Manual

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1. Description
The model UPC-1 is a heterodyne converter with 20 to 90 MHz RF input and 220 to 290 MHz IF output. It uses
high-quality commercial RF modules and has internal regulated power supplies. The UPC-1 has the same form
factor and is designed to be used with the Callisto instrument. Converters that are to be used with the LWA
Antenna are factory modified to reduce the converter gain. These factory modifications are reversible as
described in Appendix I. The factory modifications themselves are described in Appendix II.
The UPC-1 panel layouts are shown below. The front panel (left) has input connectors for power (2.1 x 5.5 mm
coaxial jack) and RF from the antenna system (type N-female) and a power switch and power indicator. The rear
panel (right) has an output connector for the IF to the receiver (type N-female).
Power
ON
+15 Vdc
The basic configuration is shown below. The up-converter provides approximately 16 dB conversion gain. A low
noise preamplifier near the antenna (tower-mounted amplifier, TMA) will improve system sensitivity. The TMA-1
or TMA-2 tower-mounted amplifiers may be used with the UPC-1 up-converter (all TMAs are tested from 10
MHz to 1 GHz). The Converter is inserted between the LNA power coupler or bias-tee and the Callisto
instrument.
Antenna
Tower-
Mounted
Amplifier
See last page for copyright and document information, File: Reeve_ConverterInstructions.doc, Page 1
UPC-1 Up-Converter Installation and Operation
RF IN
Model:
S/N:
Date:
RF+dc
RF
LNA Power
Coupler
IF OUT
e-CALLISTO-NA
Anchorage, Alaska USA
Heterodyne Converter
IF
Converter
Callisto
15 Vdc
Callisto
12 Vdc
Power
Adapters

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Summary of Contents for Reeve UPC-1

  • Page 1 1. Description The model UPC-1 is a heterodyne converter with 20 to 90 MHz RF input and 220 to 290 MHz IF output. It uses high-quality commercial RF modules and has internal regulated power supplies. The UPC-1 has the same form factor and is designed to be used with the Callisto instrument.
  • Page 2 Power supply The UPC-1 requires 15 to 17 Vdc input voltage. The power supply ac adapter should be regulated such that the input never drops below 15 V under all anticipated input and output conditions. The power supply should be high quality and electrically quiet with low ripple.
  • Page 3 IF output range. When finished with this step close callisto.exe Open the Frequency Genie software tool and load the spectral overview from step 3 For the UPC-1 up-converter, setup Frequency Genie as follows. Channel selection method: Minimum detection (see note) Type of converter:...
  • Page 4 UPC-1 Up-Converter Installation and Operation 10. Edit scheduler.cfg for the desired observing schedule 11. Open callisto.exe. It will automatically load the new frequency file 12. If callisto.cfg is not setup for automatic execution, manually start the new observation. When the Automatic radio button is selected, Callisto will observe according to the scheduler.cfg file setup in step...
  • Page 5 UPC-1 Up-Converter Installation and Operation Spectrum Y(f) plot from callisto.exe showing the frequency range 20 to 90 MHz for the UPC-1 up-converter with no signal input Part of an example frequency list generated by Frequency Genie with 200 channels/sweep between 20 and 90 MHz and local oscillator of 200 MHz See last page for copyright and document information, File: Reeve_ConverterInstructions.doc, Page 5...
  • Page 6 UPC-1 Up-Converter Installation and Operation 4. UPC-1 Up-Converter Description Block diagram Refer to block diagram below. The RF input is first applied to a 20 to 90 MHz bandpass filter and then amplified approximately 22 dB by a low noise amplifier (typical noise figure 2.9 dB). A voltage controlled oscillator (VCO), tuned to 200 MHz, is mixed with the filtered RF input to provide an IF output range of 220 to 290 MHz.
  • Page 7 UPC-1 Up-Converter Installation and Operation Specifications (all values nominal) • RF input frequency range: 20 to 90 MHz • RF input connector: Type N-female • IF output frequency range: 220 to 290 MHz • IF output connector: Type N-female •...

  • Page 8: Appendix I ~ Restore Modified Upc-1 Converter

    The LWA Antenna is an active antenna with 35 dB gain and 2.7 dB noise figure. Therefore, when the LWA Antenna is used with the UPC-1 and Callisto instrument, the internal amplifier in the UPC-1 is not required and the IF Output level must be reduced.
  • Page 9 UPC-1 Up-Converter Installation and Operation 15. Check your work and do not apply power until you are sure the Power Connector is connected properly to the power supply PCB header. Check that the connectors on K1 and K3 have not been disturbed;...

  • Page 10: Appendix Ii ~ Modification Of The Upc-1 Converter For The Lwa Antenna

    Appendix II ~ Modification of the UPC-1 Converter for the LWA Antenna To modify the UPC-1 converter from its original unmodified condition follow the steps below. These steps add a 20 dB attenuator on the IF output, disconnect the preamplifier on the RF input and disconnect the power leads for the preamplifier: 1.
  • Page 11 UPC-1 Up-Converter Installation and Operation Document information Author: Whitham D. Reeve Copyright: © 2014, 2020 W. Reeve Revision: 0.0 (Original draft started, 2 Jul 2014) 0.1 (Added images and screenshots, 7 Jul 2014) 0.2 (Corrected block diagram and revised description, 14 Jul 2014) 0.3 (Final edits prior to distribution, 7 Aug 2014)