GARRETT 2050 HF S88 TRANSCEIVER it is recommended that the transceiver chassis is connected to ground using the bolt on the rear panel to stop pick-up of unwanted noise from local power supplies and electrical equipment. Power supply All Barrett transceivers require a supply valiance of 13.8 VDC. In most vehicles or vessels this is available from the battery, in the case of vehicles with a 24Y system a 24V to 12V converter rated at 26 amps should be used (Barrett P/N BCAS0014).
BARRETT 2050 HF S8B TRANSCEIVER Antenna The antenna is a most critical part of the complete radio installation. 1 must accept the output power from the transmitter, radiate that power with minimum loss and in the receive mods, accept weak signals for input to the receiver. incorrect antenna installation will yield poor system performance and are often the cause of complaints of poor transceiver performance. A range of antennas is available from Barrel! to suit most small fixed stations.
EGE EES RES a tubular telecasts or other support structures that may be available locally. it is recommended that the halyards used to support the antenna be either LV stabilized Dacron cord or wire rope and that pulleys should be of stainless steel construction. install the antenna as illustrated in the diagrams, in the inverted *V' configuration the eye on the top of the banal is used to attach the support halyard.
BARRETT 2050 HF SSB TRANSCEIVER! 912 Multi wire Broadband Dipoles Barrett Pins 8C91200, BCO1202 and B8CY1203 Barrett 812 broadband dipoles are ideal for base stations that require operation on multiple frequencies throughout the HF spectrum using a single antenna. 125/500 watt multi wire broadband dipole The Barrett 912 antenna can be mounted ether in a horizontal or inverted VV configuration as illustrated in the following diagrams.
ES EER RES Install the antenna as illustrated in the diagrams, in the inverted 'V' configuration the eye on the top of the banal is used © attach the support halyard. in the horizontal configuration the banal hangs below the antenna.
BARRETT 2050 HF SSB TRANSCEIVER 913 series helical dipoles Barrett P/AN's BC1301 to BC9130S 913 series helical dipole antennas are compact and easily installed, having extremely narrow bandwidth characteristics and a performance approaching that of a wire dipole when used at frequencies over 4.5 MHz, The helical dipole antenna is fed by a single coaxial feeder and can accommodate up fo § frequencies. 3 frequency helical dipole The 913 helical dipole requires a 50mm diameter mounting pole.
YE Hub detail 3 frequency helical dipole Helical dipoles are manufactured to specific frequencies, but may require fine tuning after installation. To enable this the dipole elements have an adjustable length tip fo allow fire tuning for optimum SWERVE during installation. install the antenna in its final position and check the VB on each of the frequencies that the antenna was manufactured for.
EEE EEE ERR EE 915 wire dipole Barrett PIN BCO1500 Single frequency wire dipole antennas, spot tuned to the required operating frequency(s}, are the most efficient antennas for use in HF base stations. They arg simple to install and have a relatively narrow bandwidth, Single frequency wire dipole Dipole antennas should be Mounted at least 1/2 wavelength from the ground, Dipoles may be mounted either between two dowers ar in an inverted "VV" configuration (requires only one mast).
GARRETT 2050 HF SSB TRANSCEIVER # a unable transmitter is available, determine at what frequency the best SWERVE is. obtained. If this occurs at a frequency below the required frequency the dipole is fo jog, if it occurs on a frequency higher than the required frequency then the dipole is to short. Drop the dipole and adjust both ends by an equal amount and repeat the above sequence untie an optimum SWERVE is obtained. if a unable transmitter is.
ERR EEE EE Barrett 911 Automatic Antenna Tuner for base station installations Antenna Various antenna configurations, such as vertical whips, long-wires and loops, can be used for base station installations, using the Barrett 911 automatic antenna niter.
BARRETT 2050 HF SSB TRANSCEIVER A low resistance joint is made with the water pipe. Frequently the ground conductivity will riot be sufficient to provide a satisfactory ground for the Barrett $11 tuner. This wil almost certainly be the case in well drained sandy sols or on rock. In these cases a counterpoise must be used as a ground system. This will also be the case in rooftop installations where no existing ground plate {such as metal roofing exists).
BARRETT 2050 HF SSB TRANSCEIVER 212 of 237 Connection details « 2050 transceiver and 811 automatic antenna tuner in a base station configuration.
Mobile installations Transceiver position The following points must be considered when mounting the transceiver. Safety It is essential that the transceiver be mounted in a place where it cannot cause injury to the occupants of the vehicle in the event of a motor vehicle accident. For this reason overhead mounting is not generally recommended and "under dash” mounting must take into account the possibility of injuring the legs of front seat occupants.
BARRETT 2050 HF SSB TRANSCEIVER Air circulation Most transceivers rely on air flow around casing fins to dissipate heat generated by the transmitter. The mounting position must aglow free airflow around these fins. Obstruction The installation of a transceiver into a vehicle should not inhibit the normal use of the vehicle. Before finally selecting equipment positions, check that normal operation of steering, foot pedals, gear change, hand brake etc.
BARRETT 2050 HF S88 TRANSCENDENT! Connection details 2050 transceiver with mobile pack and 914 manual tapped mobile antenna 2060 Transceiver body € 914 Manual tapped whip antenna troll hes supplied Extension speaker supplied Et i with 2050 transceiver Cable with RIS connectors 9 0 PIN BCAZ000S €) connection for textual fan unit option videophone Coaxial cable and connectors PIN OCCASION © Her duty fuse & raider PA BCAZDG21 Salary popcorn 6 meter power cable supplied with transceiver Textual GPS receiver opt
GARRETT 2050 HF $SB TRANSCEIVER Antenna In any radio system an effective antenna installation is essential. Because of the need fo reduce the size of HF antennas so that they can be fitted to a vehicle, mobile antenna bandwidth becomes quite narrow and hence fining is critical. in most cases the only tuning adjustment that can be effected is adjustment to position. Particular fertilization must be given to the antenna position if satisfactory performance is to be obtained.
BARRETT 2050 HF SSB TRANSCEIVER Connection details 2050 transceiver with mobile pack and 910 automatic tuning mobile antenna 910 automatic tuning mobile antenna 2080 control head PIN BCA20G05 Microphone Heavy dy fuse & holder P/N BCAZ00Z1 supplied in mobile pack © meter parer cable supplied with transceiver © o Cable with ROJAS connectors.
21801237 Noise suppression Noise generated by motor or electrical accessories on the vehicle may cause objectionable interference to the received signal. This nose enters the receiver either by means of the battery leads or the antenna system. Providing that the recommendations concerning battery wiring given earlier in this book are followed, noise injected via the battery lead is unlikely to be significant. Most noise problems result from pick-up by the antenna.
BARRETT 2050 HF SSB TRANSCEIVER Coll to battery wiring A tow pass filter such as that supplied in the interference suppression it or similar should be fitted at the coil end of this wire. The earth connection of the filter should be short and well-bonded to the coil body.
220 of 237 0 HF SSB TRANSCEIVER! General noise suppression tips When searching for sources of noise, some of their characteristics can be helpful in oversimplification engine ignition noise and contact breaker noise is a sharp staccato ‘plop’ varying with engine speed. It is only with this class of noise that the impulse noise limiter incorporated within some transceivers is effective Noise from either sources generally has a more ‘mushy’ sound.
EES PRECISE) less 910 automatic tuning mobile antenna Barrett P/N BC91000 The 910 antenna plugs directly into the rear of a 2050 transceiver using the cables supplied. Important:2060 transceivers must have the 810 antenna option set during programming. The 910 antenna should be mounted in positions similar to those illustrated in the diagrams below. Select a position free from excessive vibration.
BARRETT 2050 HF SSB TRANSCEIVER Acceptable Mounting Positions ABSOLUTE MINIMUM CLEARANCE TOP VIEW | BONNET | ONSET 0mm 160m] x BULL BAR | ABSOLUTE MINIMUM CLEARANCE TOP VIEW REAR OF VEHICLE EE names Important: Please note that the mounting of a 910 Antenna on the front of a vehicle may be considered illegal in some pleasantries. Please check wih your local transportation authority prior fo installation on the front of your vehicle.
BARRETT 2050 HF SSB TRANSCEIVER A good earth (ground) to the main body of the vehicle is essential for efficient operation of the antenna. To achieve this clean all joints to bare metal and use copper braid earth straps if any non-metallic joints are encountered. After mounting the main body of the antenna, screw the black coil onto the antenna body followed by the stainless cites! whip. Note:Some models of the 910 antenna have a one piece spring and a stainless steel whip in place of the call and whip.
224 of 287 le = = ‘The antenna is supplied with a per-terminated 1.8 meter cable tail. This should be routed into either the engine compartment or boot {trunk} of the vehicle. A 8 meter per-terminated extension cable is supplied to connect the antenna to the transceiver {this cable may be extended to 12 meters by use of another extension cable}.
GARRETT 2050 HE SSB TRANSCEIVER 914 series manual tap whip antenna Barrett P/N BC91401 to BC81424 Installation 914 series manual tapped whip antennas are mounted on vehicles using a heavy duly base and spring (Barrett PAN BCA91400). The whip should be mounted on the vehicle in positions such as those frustrated in the diagrams below. A bracket, fabricated to withstand the forces and vibration that can be expected during off-road driving, should be used to mount the antenna base and spring fo the vesicle.
RRP TRE RENEE For wash frequency which will not tune correctly you will need to determine whether ihe tuning is high or low in frequency. Generally any frequencies which will not tune will always be out the same way, When the antenna is made most frequencies are deliberately made on the low frequency side and adjusted upwards by the placement of "tuning rings”. Tuning rings are single hart circuit rings of 20 amp fuse wire placed on the winding of an individual part of the antenna.
Operation Instructions The 914 manual tapped whip antenna should now be screwed into the base and spring mounted on the front of the vehicle, The operation frequency being used on the transceiver should now be selected on the antenna. This is done with the supplied jumper lead as indicated in the diagram below and the following example (Note:this is an example only and your antenna will be manufactured with different frequency taps.
BARRETT 2050 HF SSB TRANSCEIVER Marine Installations General The Barrett 811 automatic antenna tuner is designed for use in land base station and maritime HF services. Primarily designed for operation with end-fed unbalanced antennas such as whips and long-wires, the tuner is built in a waterproof impact resistant, molded ABS plastic enclosure. Antenna selection The 811 automatic antenna tuner will operate into almost any end-fed antenna with a length exceeding 2.
FARE ER NEO Y= Ground (earth) system The ground (earth) system is a key part of the overall antenna system and consequently the system operation. An inadequate ground system is the primary cause of poor performance and tuning problems. There is fifties point in installing the antenna unless a good ground system can be provided. Metal hulled vessels provide an almost perfect ground. The tuner ground terminal should be connected directly to the hull using the shortest possible ground strap.
BARRETT 2050 HF $8B TRANSCEIVER Electrical checkout After mechanical installation is complete select the highest frequency to be used on the transceiver. A directional watt-meter such as a Bird Mode! 43 should be inserted in the coaxial transmission line between the transceiver and the tuner. The tune mode on the transceiver is then energized (refer to the transceiver user manual). Upon application of RF energy, the tuner should start fo tune, indicated by the ‘clattering’ of the tuner relays.
RARER SEER RES = Connectors Note: All connectors below viewed looking at the rear of the transceiver GPS connector 1 AMEN =12VDC data Input AMEN 0183 format 2 +5Y +5 DOC supply max 78mA 3 AMEN + +12 VOL data input AMEN 0183 format 4 Ground Ground OV 5 APPS APPS timing pulse TTL level from GPS 6 GPS RX GPS TTL data input Fan connector Automatic antenna £71 ole o oe 1 +13.8YDC 1 Tune initiates tune $11, preamble active low 910 2 Fan control active low 2 + 13.
EARP GEE ERR Sea Auxiliary connector (25 pin female "D" connector on rear panel} Pin | Name Description of function [revel 1 Ground Ground a 2 Rx Data RS-232 data input True RS-232 3 Tx Data R-232 data output True RB-232 4 External Power On | For use wile ancillary equipment, Low 10 activate EF] Extenuate Speaker Flextime speaker output 0-10V 8 Aux digin® Future use Active low OV 7 RS-232 God Ground ao 8 ALC In Ext.
BARRETT 2050 HF SSB TRANSCEIVER Overview of HF operation HF (High Frequency) is the radio spectrum with frequencies between 1.6 and MHz. Within this radio spectrum an efficient form of transmitter modulation, SSB {Single Side Barista, is used.
BARRETT 2050 HF SSB TRANSCEIVER Radio wave propagation illustrated The following illustrations show the characteristics of ground-wave and sky-wave propagation during day and night dime. In each illustration the height of the ionosphere above the ground is shown. In both illustrations Station A communicates with Stations 8, C and D. Propagation from Station ground-wave. The diagrams frustrate that the ground wave is riot affected by the lime of day and the height of the ionosphere abase the ground.
FILE 0 HE SSB TRANSCEIVER Night 2000km EARTH The sun is lower, ionosphere is lower, best frequency to use is lower Ato B Possible optimum working frequency is 3 MHZ Ato C Possible optimum working frequency is between 5 7 MHz Ato D Possible optimum working frequency is between 9-12 Miz Factors which affect HF/SSB communications. There are a number of different factors which will affect the success of your communications via HF/SSB radio.
BRETT 2050 HF SSB TRANSCEIVER {Refer to Seismically {selective call} section of this manual for full details on Beacon call operation.) Time of day As a rule, the higher the sun, the higher the frequency that should be used. This means that you will generally use a low frequency ta communicate early morning, fate afternoon and evening, but you will use a higher frequency ta cover the same distance during times when the sun is high in the sky (e.g. midday).
