AnaCom AnaSat-C Series User manual

1961 Concourse Dr. San Jose, CA 95131, USA
P/N 30723 Rev 13 www.anacominc.com Phone: [phone] FAX: [phone]
AnaSat®-C series
AnaSat® Transceiver
Operating Manual
Extended EC
Super Extended SEC
Russian RC
PALAPA PC
INSAT XC
LMC

1961 Concourse Dr. San Jose, CA 95131, USA
P/N 30723 Rev 13 www.anacominc.com Phone: [phone] FAX: [phone]
ANACOM AnaSat® Transceiver C-Band 2
You have just received an AnaSat®-C Transceiver, a cost-effective product with no
compromise on quality and reliability. This product should provide tireless performance in any
reasonable operating environment.
We at AnaCom have taken great care to provide a convenient, easy-to-use product in a single
package. Should a situation arise beyond the operator’s control, just give us a telephone call. Many
situations can be diagnosed and solved by AnaCom’s trained customer-service personnel over the
phone.
If you have any questions, require technical assistance or training please call AnaCom directly
at [phone] or FAX to us at [phone]. You can also send e-mail to
[email protected] and one of our engineers will contact you.
ANACOM, INC.
1961 Concourse Dr.
San Jose, CA 95131
Tel: [phone]
Fax: [phone]
 2018 AnaCom, Inc. All rights reserved. The information furnished by AnaCom, Incorporated, in this
publication is believed to be accurate and reliable. However, no responsibility is assumed by AnaCom for its
use, nor any infringements of patents or other rights of third parties resulting from its use. No license is
granted by implication or otherwise under any patent or patent right of AnaCom, Inc. AnaCom reserves the
right to change circuitry and specifications at any time without prior notice.
The following terms are trademarks of their respective holders:
AnaSat, ELSAT, AnaCom, Inc.
Polyswitch
Teflon
Duroid
VT52, VT100 Digital Equipment Corp.
INTELSAT

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ANACOM AnaSat® Transceiver C-Band 3
Operating Manual
for
AnaSat® C-Band Transceivers
Table of Contents
AnaSat®-C Quick Start Guide .......................................................................................... 5
Introduction ........................................................................................................................ 6
Typical Operating Parameters - AnaSat® C-Band ......................................................... 7
Physical Characteristics - AnaSat® C-Band .................................................................... 8
Installation .......................................................................................................................... 9
Unpacking ................................................................................................................................ 9
Tools and Test Equipment ............................................................................................... 9
Safety Precautions ................................................................................................................ 9
General ............................................................................................................................. 9
Power Supply ................................................................................................................. 10
Transceiver ..................................................................................................................... 10
Power Amplifier............................................................................................................. 10
LNC/LNA ...................................................................................................................... 10
Site Considerations ............................................................................................................ 10
Antenna .......................................................................................................................... 10
Power Requirements ...................................................................................................... 11
Transceiver Mounting Considerations ............................................................................... 11
Transceiver Mounting .................................................................................................... 11
Grounding ...................................................................................................................... 11
LNC/LNA/TR Filter Mounting...................................................................................... 14
Cable and Waveguide Connections ................................................................................... 14
Cabling Requirements .................................................................................................... 14
1.Transmitter Feed .................................................................................................... 14
2.70MHz Modem ...................................................................................................... 14
3.AC Power ............................................................................................................... 15
4.LNC/LNA .............................................................................................................. 15
5.Terminal Connections ............................................................................................ 15
Final Check .................................................................................................................... 16
Water Resistance Wrap .................................................................................................. 16
Operation .......................................................................................................................... 18
Preliminary Steps ............................................................................................................... 18
Terminal Connection and Configuration ....................................................................... 18
Autolink ......................................................................................................................... 18
Frequency Programming ................................................................................................ 18
TXC; RXC ..................................................................................................................... 18
TXF; RXF ...................................................................................................................... 18

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ANACOM AnaSat® Transceiver C-Band 4
Antenna Adjustment ...................................................................................................... 20
M & C Operation ............................................................................................................... 20
Terminal Display ........................................................................................................... 20
Gain Adjustments............................................................................................................... 22
Transmitter Gain ............................................................................................................ 22
Receiver Gain................................................................................................................. 22
Basic M & C Commands ............................................................................................... 23
Maintenance ..................................................................................................................... 24
LNC/LNA Replacement .................................................................................................... 24
LNC/LNA Replacement Procedure ............................................................................... 24
Checking Receive Gain .................................................................................................. 24
Fan Replacement ................................................................................................................ 25
Alarm Relay Closure Option .......................................................................................... 26
Monitored Values ........................................................................................................... 26
18-Pin Circular Weathertight Connector ....................................................................... 26
Appendix A. M & C Command Set .............................................................................. 27
Alphabetical Listing of M & C Commands ........................................................................... 27
Appendix B. ARM9 M&C Card Connection Methods ............................................... 34
Serial Port Methods................................................................................................................ 34
RS-232 ........................................................................................................................... 34
RS-485 ........................................................................................................................... 34
FSK ................................................................................................................................ 34
Ethernet-based Methods......................................................................................................... 35
Supervisor 10 ................................................................................................................. 36
Telnet ............................................................................................................................. 37
HTTP (web browser) ..................................................................................................... 38
SNMP ............................................................................................................................. 39
Appendix C. Serial Port Wiring .................................................................................... 40
COM1, 6-Pin Circular Weathertight Connector .................................................................... 40
COM0, 18-Pin Circular Weathertight Connector .................................................................. 40
RS485/RS232 Selection ......................................................................................................... 41
Data Terminal Connection ................................................................................................. 41
Alternative Alarm Relay Wiring ........................................................................................ 41
Appendix D. Satellite Channel Listings ......................................................................... 42
Appendix E. dBm/Watts Conversions ............................................................................ 43
LIMITED WARRANTY ................................................................................................. 44

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ANACOM AnaSat® Transceiver C-Band 5
AnaSat®-C Quick Start Guide
1. Mount the transceiver and the LNC/LNA on the antenna.
2. Connect the cables as shown in the drawing (See page 16 of Operations Manual).
3. Connect a terminal to a serial port, configured to 1200bps, 8 data bits, no parity, 1 stop bit, CR/LF
Off. Connection diagrams are in Appendix C.
4. Install a proper power connector on the (included) power cable. Plug the cable into 110 or
240VAC, 50/60Hz. Verify the green LED on the transceiver is blinking, indicating normal
internal operation. The red LED is usually OFF. If illuminated, it indicates an alarm condition
requiring attention. Refer to the ALARM command for details (Appendix A).
5. Using the terminal, configure the transceiver to the proper frequency:
RXFREQ nnnn (nnnn in MHz —see Appendix D for channel)
TXFREQ nnnn (nnnn in MHz —see Appendix D for channel)
6. Configure receive gain and transmit output power:
RXGAIN nnn nnn ranges from 85 to 100
TXGAIN nn nn ranges from: 10 to 36 [0C] 44 to 70 [2C]
48 to 74 [5C] 51 to 77 [10C]
54 to 80 [20C] 57 to 83 [30C, 40C]
58 to 84 [50C, 60C] 60 to 86 [70C, 80C]
61 to 87 [100C] 62 to 88 [125C]
63 to 89 [150C] 64 to 90 [180C]
64 to 90 [200C]
7. Enable the Transmitter:
TX ON (TX OFF takes the transmitter OFF air)

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ANACOM AnaSat® Transceiver C-Band 6
Introduction
The AnaSat®-C VSAT series C-Band transceivers are designed for continuous outdoor duty in all
types of environments. Ideally suited for SCPC, MCPC, and DAMA applications, the AnaSat®-C series
transceivers transmit in the 6 GHz frequency range and receive in the 4 GHz range.
The AnaSat®-C VSAT transceiver integrates all necessary functions, including the solid-state
power amplifier (PA), into a small, highly integrated outdoor package. The only cabling required to the
indoor plant are the IF and AC power cables. The LNC or LNA connects to the transceiver with a single
coaxial cable.
Designed to interface with any 70 MHz modem, the AnaSat®-C VSAT transceiver may be used in
a wide variety of communication networks. The earth stations may be configured in Star, Mesh, or Ring
networks and with the optional Station Management System (SMS) tied to a PC, you can monitor and
control all local transceivers and other network-compatible equipment.
The AnaSat®-C transceiver upconverts the modulator’s 70 MHz IF output to an RF signal in the 6
GHz range for transmission, and downconverts the 4 GHz received RF signal to a 70 MHz IF signal for
use by the demodulator.
The PA uses Internally-Matched Field-Effect Transistors (IMFET) to achieve highly linear power
and gain with minimal intermodulation distortion (IMD) products.
High Electron Mobility Transistors (HEMT) and Gallium-Arsenide Field-Effect Transistors
(GaAs FET) enable the Low-Noise Down-Converter (LNC) to achieve a noise figure better than 35 ºK.
The transmit (TX) and receive (RX) synthesizers are locked to an oven controlled, high-stability
crystal oscillator (OCXO) and can provide 1 MHz frequency selection step sizes over the entire
bandwidth. TX and RX frequency selection is completely independent for extra flexibility.
In this manual, all frequency ranges reflect the Standard “C” model of the AnaSat®-C transceiver
except as noted.
Figure 1 - 5W AnaSat®-C VSAT transceiver Figure 2 - 100W AnaSat®-C VSAT transceiver

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ANACOM AnaSat® Transceiver C-Band 7
Typical Operating Parameters - AnaSat® C-Band
Unit Power 0W 2W 5W 10W 20W 30W 40W 50W 60W
1 dB Compression Point 8 33 37 40 43 44.8 46 47 47.8
TX Gain 31 64 68 71 74 75.8 77 78 78.8
Unit Power 70W 80W 100W 125W 150W 180W 200W 300W 350W 400W
1 dB Compression Point 48.5 49 50 51 51.8 52.6 53 54.8 55.4 56
TX Gain 79.5 80 81 82 82.8 83.6 84 85.8 86.4 87
TX Gain Range +6/-20 dB variable in 1 dB steps via M&C
TX Level Flatness ± 1.5 dBp -p max / 500MHz
TX Gain Over Temperature ± 1.5 dB max
TX Input IF Frequency 52 to 88 MHz
TX Input IF Impedance 50 ohms (75 ohms optional)
TX Input IF Level -30 dBm for rated output with nominal gain
TX Output Frequency EC = 5.850 to 6.425 GHz SEC = 5.850 to 6.725 GHz PC = 6.425 to 6.725 GHz
RC = 5.975 to 6.475 GHz XC = 6.725 to 7.025 GHz
TX Frequency Step Size 1 MHz (XC Band 500 KHz step size)
TX Phase Noise -60 dBc/Hz max @ 100Hz -70 dBc/Hz max @ 1KHz
-80 dBc/Hz max @ 10KHz -90 dBc/Hz max @ 100KHz
Intermod -33 dBc max (2 carriers, each 9dB back off brom P1dB rating)
Spurious -65 dBc max out of band
RX Input Frequency EC = 3.625 to 4.200 GHz SEC = 3.400 to 4.200 GHz PC = 3.400 to 3.640 GHz
RC = 3.650 to 4.150 GHz XC = 4.500 to 4.800 GHz
RX Frequency Step Size 1 MHz (XC Band 500 KHz step size)
RX Output Frequency 52 to 88 MHz
RX Gain 75 to 100 dB M&C controlled
RX Noise Figure 0.9 dB (65K) MAX / Optional 0.63 dB (45K) and 0.49 dB (35K)
RX Linearity -35 dBc intermod, MAX
RX Phase Noise -60 dBc/Hz max @ 100Hz -70 dBc/Hz max @ 1KHz -80 dBc/Hz max @ 10KHz
-90 dBc/Hz max @ 100KHz -100 dBc/Hz max @ 1MHz
RX Output Impedance 50 ohms (75 ohms optional)
Alarm Relays FORM C for Summary Alarm; Isolated
Power 100 to 250 VAC; 47 to 63 Hz optional 48V DC
M&C SNMP, HTTP, Telnet Ethernet, RS-232, RS-485, FSK
Temperature -50 to +55oC operational -50 to +75oC storage
Humidity 95% at 45C
Altitude 6500 meters (21,325 ft)
Rain 20 inches per hour
Wind 150 miles per hour
Vibration 1.0 g random operational, 2.5 g random survival
Shock 10 g operational, 40 g survival

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ANACOM AnaSat® Transceiver C-Band 8
Physical Characteristics - AnaSat® C-Band
Unit Power 0W 2W 5W 10W 20W 30W 40W 50W 60W
Typical Power Consumption 41 73 83 125 229 280 390 394 398
Prime Power Recommendation 100 150 220 340 600 730 870 880 890
Weight (lbs.) 23 27 29 34 40 43 45 57 57
(kg.) 10 12 13 15 18 20 20 26 26
Unit Power 70W 80W 100W 125W 150W 180W 200W 300W 350W 400W
Typical Power Consumption 570 572 762 1179 1179 1539 1539 2832 2832 2832
Prime Power Recommendation 1200 1200 1600 2400 2400 3100 3100 6200 6200 6200
Weight (lbs.) 67 67 67 135 164 164 164 260 260 260
(kg.) 30 30 30 61 74 74 74 118 118 118
Dimensions:
0W 21.6” x 9.0” x 6”
549 x 229 x 152 mm
20W 30W 21.6” x 9.0” x 10.3”
549 x 229 x 262 mm
70W 80W
100W
21.6” x 13” x 11.2”
549 x 330 x 284 mm
2W 5W 21.6” x 9.0” x 7”
549 x 229 x 177 mm
40W 21.6” x 9.0” x 11.4”
549 x 229 x 289 mm
125W 150W
180W 200W
34.5” x 12.75” x 12.4”
876 x 324 x 315 mm
10W 21.6” x 9.0” x 9.4”
549 x 229 x 238 mm
50W 60W 21.6” x 9.0” x 12.5”
549 x 229 x 317 mm
300W 350W
400W
34.5” x 25.5” x 12.36”
876 x 648 x 314 mm

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ANACOM AnaSat® Transceiver C-Band 9
!
!
Installation
The AnaSat®-C transceiver package consists of the transceiver, the Low Noise Converter (LNC),
and the LNC interconnection cable.
This chapter contains the general requirements for installing the transceiver and LNC on the
antenna and making the cable and waveguide connections. Specific mounting methods may vary
considerably depending upon particular antenna and site characteristics. Refer to the antenna
manufacturer’s instructions for more detailed instructions.
AnaSat®-C transceivers are designed for installation and setup without removing the cover. The
transceiver may be completely initialized for normal operation using an ASCII terminal or a local
computer.
Unpacking
Check to make sure that the Transceiver has not suffered any damage in shipment. Compare
contents of the crate to ensure items received match those listed on the packing slip. Retain all shipping
containers for future use.
Tools and Test Equipment
Have on-hand a standard electrician’s tool kit and any tools listed in your antenna installation
instructions.
Safety Precautions
General
Ensure the AnaSat®-C transceiver and LNC are properly grounded. Do not rely on coaxial cable
shields for the ground connection. If the cover is removed from any AnaCom product, ensure that all:
 gaskets are intact and free of damage prior to reinstallation
 mounting screws are properly installed
Ensure all connectors are properly waterproofed.
Observe normal safety precautions when operating this equipment.
Removal of any cover may jeopardize the weather seal, which may cause problems
later.
For installation purposes, LNCs and LNAs are identical in terms of dimensions and structure,
including mounting holes. Anywhere this manual refers to "LNC," the instructions are valid for
LNA installation and operation as well.

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ANACOM AnaSat® Transceiver C-Band 10
!
Power Supply
Confirm that AC Power is disconnected before removing the transceiver or LNC cover.
Transceiver
Take adequate precautions to ensure the AnaSat®-C transceiver does not transmit a signal
until it has been properly connected and set up for authorized frequencies and power levels.
The transmitter is normally shipped from the factory with TX ON!
Power Amplifier
Be sure the transceiver TX OUT port is properly terminated prior to operation. Ensure all the
correct waveguide gaskets are used to prevent water damage.
TO ENSURE PROTECTION OF PERSONNEL AND EQUIPMENT, USE CARE DURING
ANTENNA INSTALLATION AND WHENEVER WORKING ON OR AROUND THE SYSTEM.
LNC/LNA
Be sure the LNC/LNA unit is properly terminated prior to operation. Ensure all the correct
waveguide gaskets are used to prevent water damage.
Site Considerations
The installation requirements of any particular site are the responsibility of the system operator.
AnaCom offers an optional installation mounting kit, that can be used at most sites. Contact AnaCom
for details.
Antenna
The transceiver must be attached to some form of mounting structure which is usually the antenna
feed boom or the antenna bracket structure. Specific mounting procedures will depend on the antenna
used. The transceiver and LNC are designed to be mounted on most antennas. Locate and install the
antenna according to the antenna manufacturer’s instructions. Choose an area that is free of extraneous
interference from motors and electronic equipment and has a clear line-of-sight from the antenna to the
satellite.
Lightning arrestors should be used at the site to protect personnel and equipment. Size 3/0 or 4/0
stranded copper wire should be used to bond the transceiver to the antenna frame and to the lightning
protection ground rod.
Transmitter RF output power levels are adequate to cause blindness or other serious
injury to body tissues. Use caution when working around the Transceiver or antenna
when the system is active.

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ANACOM AnaSat® Transceiver C-Band 11
Power Requirements
The AnaSat®-C transceiver requires a power source that supplies 110 VAC or 220 VAC at 50 or
60 Hz, through a circuit breaker. Specific circuit breaker size will depend on which transceiver is being
used. To assure uninterrupted service, some method of backup AC power is recommended. Installing
surge arrestors and AC power line filters will reduce voltage surges from the AC power input. .
NOTE: AC TRANSIENTS AND SURGES MAY CAUSE DATA TRANSMISSION ERRORS AND LOSS OF SYNCHRONIZATION IN THE
TRANSCEIVER SYNTHESIZERS AND/OR THE EXTERNAL MODEM EQUIPMENT.
Transceiver Mounting Considerations
The AnaSat®-C transceiver must be mounted such that:
1. Sufficient support is afforded the transceiver to minimize the effects of antenna sway in strong
winds.
2. Air movement is possible across the heat sink fins. Ideally, the fins should be aligned
vertically, but this is not required.
NOTE: The length (and associated RF losses) of the interconnecting cables must be considered
when determining the location of the transceiver and LNC.
Transceiver Mounting
The AnaSat®-C transceiver is designed for mounting in any position. For optimal heat sink action,
the heat sink fins should be vertical, or as nearly vertical as is practical. Figure 2-1 shows a common
installation example where the transceiver is mounted on the antenna feed support arm.
When mounting the transceiver, allow enough room to adjust the antenna’s azimuth and elevation.
Throughout installation and during any polarization, azimuth, or elevation adjustment, ensure the power
cables, IF cables, and any waveguide parts are not crimped or pinched.
Grounding
Electrical bonding (grounding) of the
transceiver is required to prevent possible
damage from lightning or other induced
electrical surges.
The transceiver is provided with both an
M3, and a #6 grounding point. It is
recommended that heavy gauge copper wire or
copper braid be used to bond this unit to the
earth ground (grounding rod) using the most
direct (shortest) route possible.
Figure 2-1. Typical Transceiver mounting

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ANACOM AnaSat® Transceiver C-Band 12
Figure 2-1a Transceiver Mounting for Single Thread

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ANACOM AnaSat® Transceiver C-Band 13
Figure 2-1b Transceiver Mounting for Single Thread

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ANACOM AnaSat® Transceiver C-Band 14
LNC/LNA/TR Filter Mounting
The LNC is shown in Figure 2-2 (LNA in figure 2-3).
Normally the LNC/LNA is directly bolted to the antenna RX feed.
In some situations, additional transmit-to-receive isolation may be
required to achieve true low-noise receive operation. In that case,
the optional TR filter (Figure 4-3) should be bolted between the
LNC/LNA and the antenna receive port. An appropriate
waveguide gasket must be included at both ends of the TR filter.
Connect one end of the coaxial cable with male N-connectors
(included) to the LNC/LNA. Refer to the note at the end of this
section regarding watertight connections. Route the 10-foot cable
to the transceiver and connect to the LNC/LNA N-connector.
Longer or shorter cable lengths may be used; contact ANACOM
for details.
Caution: Never touch the ground-plane antenna pin found
inside the wave-guide flange of the LNC/LNA. The front-end
preamp is susceptible to static discharge.
Cable and Waveguide Connections
Cabling Requirements
Local regulations may require that cables in occupied buildings
be installed in steel conduit. Local government agencies may waive
this requirement for the use of Plenum cables, which are standard cables entirely encased in solid
Teflon. Check the codes in your area.
NOTE: EQUIPMENT OUTAGES DUE TO FAULTY CABLE MATERIALS OR INSTALLATION ARE NOT
COVERED BY YOUR WARRANTY.
Figure 2-5 provides the cabling diagram for the AnaSat®-C transceiver.
1. Transmitter Feed
Connect a section of low loss cable with a type N connector between the OMT transmit port and
the transceiver’s transmit output, TX OUT. Ensure the connections are weather-tight.
For transceivers with the CPR-137 flange option, connect a section of flexible CPR-137G
waveguide between the antenna OMT transmit port and the transceiver’s transmit output, TX
OUT. (Waveguide should be attached to the antenna feed per manufacturer’s instructions).
Ensure a gasket is fitted at each flange.
2. 70MHz Modem
Attach a coaxial cable with male N-connectors between the transceiver’s TX IF and the
modulator IF OUTPUT. Make sure that the connections are weather-tight.
Attach a coaxial cable with male N-connectors between the transceiver’s RX IF and the
demodulator IF INPUT. Make sure that the connections are weather-tight.
Figure 2-2. LNC assembly.
Figure 2-3. LNA assembly.

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ANACOM AnaSat® Transceiver C-Band 15
3. AC Power
Attach the AC input cable to the 4-pin connector on the transceiver. Run the AC cable to the
power source but do not attach yet. The supplied power cable has a weather-tight circular
connector attached to one end. The other end is terminated with flying leads. Attach the proper
AC power connector for your location to the end of this cable.
Color Code:
Brown................ AC Hot power lead
Blue ................... AC Neutral power lead
Green/Yellow .... Ground
4. LNC/LNA
Attach the RF cable between the LNC connector and the transceiver LNC input connector. If a
longer cable is required, insure that the replacement cable is designed for low loss at microwave
frequencies. Maximum loss of the LNC cable must be 5 dB or less at 5 GHz! This restriction
does not apply for an LNA cable.
5. Terminal Connections
A data terminal or a computer with terminal software connects to the AnaSat®-C via either RS-
232 or RS-485 serial ports. Appendix C shows the pinout of the serial outputs. Both 6-pin and
18-pin weather-tight circular connectors are included. An optional serial computer cable is
available from ANACOM.

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ANACOM AnaSat® Transceiver C-Band 16
Final Check
Recheck all bolts and cabling. Refer to Figure 2-5 to verify cable connections.
After all other connections have been made, connect the AC power cord to an active outlet.
Water Resistance Wrap
The application of moisture-resistant wrap (mastic tape) to all connectors is
recommended to prevent water entry and resultant water damage. See Figure 2-4.
Apply the mastic tape as follows:
1. Ensure that all connectors are tight.
2. Pre-cut the mastic tape to the desired size.
3. Center the tape on the connector to be sealed and wrap the tape tightly
around the connector. Squeeze the tape tightly and ensure that both ends of
the tape have formed around the connector and the cable.
4. Apply the mastic tape to all connectors that may be exposed to moisture.
Figure 2-4.
Mastic Tape
Application

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ANACOM AnaSat® Transceiver C-Band 17
Fig 2-5. Transceiver Cabling Diagram

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ANACOM AnaSat® Transceiver C-Band 18
!
Operation
Preliminary Steps
After the AnaSat®-C hardware is mounted and verified, the antenna must be aimed toward the
desired satellite. Follow the antenna/mount manufacturer’s instructions, using coordinates provided by
the satellite operator. Do not transmit until you have received authorization from the satellite network
operation center, and a transmit power level from its engineering staff.
Terminal Connection and Configuration
Autolink
The AnaCom M&C features automatic baudrate sensing on the serial ports. If a wrong baudrate is
detected, the M&C will drop to 1200 baud and wait for user to move to 1200 baud. AnaCom provides a
CD with both our Supervisor and Supervisor Jr. software on it that will establish a link with the ODU
automatically, regardless of the last used settings.
Connect a terminal or computer running terminal emulation software to either serial port.
Generally, COM 1 (the 6-pin circular connector) is used for on-site maintenance and control. COM 0 is
often used in its RS-485 mode, with multi-unit, packetized protocol and differential mode signals good
for moderately long distance (up to 4000 feet or 1200m) remote control. Either port or either serial
protocol can be used to accomplish setup. Set the terminal to 1200 baud, eight data bits, no parity, and
one stop bit (1200,N,8,1 protocol). Refer to Appendix C for wiring diagrams for the COM ports.
Frequency Programming
TXC; RXC
The transmit and receive frequencies are set independently using the TXCHAN (TXC) and
RXCHAN (RXC) commands. Refer to Appendix D for calculations of channel numbers versus
frequency. NOTE: Appendix D assumes an IF of 70 MHz for both TX IN and RX OUT. Add or
subtract any difference between the actual IF and 70 MHz to determine the exact RF frequency
employed.
TXF; RXF
Direct frequency entry in MHz can also be done by typing TXF**** or RXF**** where **** are
the transceiver frequencies desired. This also assumes exactly 70MHz (or 140 MHz) TXIF & RXIF.
Operating frequencies for standard C-band channels (EC and SEC) are calculated with the
following formulas (see next page):
AnaCom Transceivers are shipped from the factory with TX ON as active.

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ANACOM AnaSat® Transceiver C-Band 19
fTX = TX IFIN + 5854 + Ch# MHz
fRX = RX IFOUT + 3629 + Ch# MHz
For negative channels:
fTX = TX IFIN + 5855 + Ch# MHz
fRX = RX IFOUT + 3630 + Ch# MHz
For example, if the following commands are given to the transceiver:
RXCHAN 50
TXCHAN 50
Then with a TX IN intermediate frequency of 72.5 MHz the result is an output frequency of
5976.5 MHz. Likewise, with an RX OUT IF of 67.5 MHz, then the received RF frequency is 3746.5
MHz.
For XC (INSAT) frequencies, the formulas are:
fTX = TX IFIN + (13259 + Ch# ) / 2 MHz
fRX = RX IFOUT + (8859 + Ch# ) / 2 MHz
NOTE:XC CHANNEL SPACING (STEP SIZE)IS 0.5 MHZ.
For RC (Russian) frequencies, the formulas are:
fTX = TX IFIN + 5904 + Ch# MHz
fRX = RX IFOUT + 3579 + Ch# MHz
For PC (PALAPA) frequencies, the formulas are:
fTX = TX IFIN + 6354 + Ch# MHz
fRX = RX IFOUT + 3329 + Ch# MHz
Both fTX and fRX may be directly entered and displayed via the M & C by using the TXFREQ and
RXFREQ commands. These commands will change the terminal display from channel number to RF
frequency. These frequencies assume exactly 70 MHz IF.

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ANACOM AnaSat® Transceiver C-Band 20
!
Antenna Adjustment
Follow the antenna manufacturer’s instructions for antenna position adjustment. For final alignment,
contact the satellite operator and get the correct polarization, azimuth, and elevation of the satellite and
also confirm the desired transponder is operational.
Apply power to the AnaSat®-C. While the transceiver requires about 5 minutes for the OCXO to
reach full stability, antenna adjustments may be performed by monitoring other signals, such as
beacons.
Connect a spectrum analyzer to the RX IF output. Set the AnaSat®-C to the desired frequency
using the RXCHAN (or RXFREQ) command, as described above. While monitoring the IF output for
signals, slowly sweep the antenna through azimuth and elevation. Adjust antenna position for maximum
signal strength.
Please note that the fan, on units so equipped, is thermostatically controlled and does not turn on when
the unit is cold.
M & C Operation
Terminal Display
The M & C terminal display gives a complete accounting of transceiver alarms and status. The
display is sent to the terminal every 30 seconds. This interval can be changed with the UTIMER
command (See Appendix A).
The top line shows the transceiver model and serial number.
The second line gives the primary transceiver operating parameters:
ꞏ Status of the TXREQ setting: “ON” or “OFF”
“ON” indicates the transceiver will transmit when all major transmitter alarms are cleared. This is
the normal setting.
“OFF” indicates the transmitter will not turn on even if all alarms are clear.
ꞏ Transmitter status is either “TX ON AIR” or “TX OFF AIR”
The third line gives a summary alarm indication. The alarm can be “CLEAR”, “MINOR”, or
“MAJOR”. See Appendix A for specific alarms.
The fourth and fifth lines give TX and RX channel (or frequency) and gain values.
ꞏ TXCHAN number is the actual transmit channel selected. Alternately, TXFREQ number is the
actual transmit frequency for 70 MHz (140 MHz) input.
ꞏ TXGAIN is the actual transmit gain value selected in dB.
ꞏ RXCHAN number is the actual receive channel selected; or RXFREQ number is the actual receive
frequency for 70 MHz (140 MHz) output.
Do not transmit while adjusting the antenna position.