BD-25 144/440Mhz FM 50W
Contents
1. defects in material or workmanship To obtain such warranty service the original purchaser must 1 Provide proof of purchase 2 Ship the product in its original container or eguivalent fully insured and shipping charges prepaid to Mirage as addressed below internal adjustments are factory set for best performance consistent with reliable operation Changing internal adjustments may void this warranty Improper maintenance repair may also void this one year warranty We recommend that units reguiring repair during the warranty period be returned to the factory This unit was not designed for repeater operation and its use in such service is at your own risk Mirage assumes responsibility for any item connected to or used in conjunction with this product The foregoing constitutes Mirage s entire obligation with respect to this product and the original purchaser and any user or owner shall have no remedy and no claim for incidental or conseguential damages Mirage products to serviced in warranty or out of warranty should shipped freight paid to Mirage 921 Louisville Road Starkville MS 39759 USA Product must be accompanied by a letter describing the problem in detail Be sure to include YOUR NAME ADDRESS AND TELEPHONE NUMBER This warranty gives specific legal rights and you may also have other rights which from state to state WARNING This unit shou2. CONTENTS INTRODUCTION 3e tenent testis be 1 BEATURES ze zo oa ce se dni eite saine 1 SPECIFICATIONS sipka sn 1 2 EXPLANATION OF 3 5 INSTALEA LION sporu 6 BD 25 OPTIONAL 7 8 PRECAUTIONS eee hasenia ov teda aperte 9 10 CONNECTION 11 12 OPERA TION 13 BD 25 BOOSTER AMP BLOCK CIRCUIT 14 WARRANTY Zadat ono dd noch 15 INTRODUCTION The BD 25 is a dual band power linear amplifier designed for the 144 430 MHz band It has a maximum output power of 30W The BD 25 incorporates a cross band full duplex function that is the first of its kind in the industry This compactly designed amplifier employs the new two band one RF power transistor technique The BD 25 is a remarkable and useful VHF UHF dual band power amplifier FEATURES The transmitter amp section with a single RF power transistor which enables to cover both VHF and UHF bands SPECIFICATION FREQUENCY 144 MHz MODE FM INPUT POWER 1 5W OUTPUT POWER 50W DC POWER SUPPLY 13 8V CURRENT CONSUMPTION 8A MAX INPUT OUTPUT IMPEDANCE 50 Ohm INPUT OUTPUT CONNECTOR MTYPEX 2 Accessory Circuits 1 Automatic freguency selection controlled circuit 2 Reverse DC power polarity protection circuit 3 VHF UHF On Air indicator Semiconductor Components RF Po
3. hing condition is poor or the SWR is high please try to lower the SWR This is also important to ensure the efficient transmitting of output power from the antenna Also check make sure the antenna is properly connected and there is no short or open before operation Keep the input power at 5W or less Be careful that the DC voltage is kept below 13 8V 12 14V The amplifier could be damaged is connected to a DC 24V battery for truck use or AC power source Never connect the whip antenna of a handy transceiver directly to the antenna connector of the amplifier unit using M BNC converting connector etc It may cause damage to the antenna due to insufficient power capacity It may also damage the transceiver or the amplifier when strong RF signal intrusions occur secs When utilizing a mono band antenna check before operation that the antenna is identical with the transceiver operating freguency When inserting the coaxial switch to either or both of the input and output sides of the amplifier unit in order to operate two sets of transceivers and antennas which have different freguencies carefully check the position of the coaxial switch Be sure to use a 500 coaxial cable for the various connections When the impedance differs as with a 7502 cable reflected waves will cause a mis match This condition makes it difficult to achieve full power from the amplifier and it may cause the RF power transistor to be damaged When usi
4. ld not be operated with the cover removed The cover confines RF radiation The harmonic filters contained in the circuit will not suppress direct radiation that may result if the cover is removed 25 7
5. ls of handy transceivers MOUNTING BRACKET The mounting bracket allows easy attachment of your BD 25 to your car ADAPTER POWER SWITCH The adaptor power can be turned OFF middle position when the amplifier is not in use You can select the adaptor to be 10 8V left position for new HT models or 13 8V right position for older models depending on your HT INSTALLATION TY lt TO CAR BATTERY TO POWER SUPPLY O Sy ANTENNA BD 25 OPTIONAL ADAPTORS HAM RADIO ADAPTOR COMPATIBLE TRANSCEIVER MODEL MAKER MODEL NO ICOM IC 2N 02N 3N 03N 12N 2G 3G 12G 23 etc ICOM IC 2S 2SAT 2SR 35 3SAT 3SR 24 W2 X2 etc IC W21 X21 W21T X21T etc MI 4 IC T22 T42 FT 23 204 73 704 104 728 etc FT 24 74 205 705 305 805 729 etc FT II FT30 TH 25 25G 45 45G 55 75 77 etc TH 22A 22AT 42A 42AT 59 79 79E etc C150 C450 C520 C550 620 etc JI 1 ADAPTORS and ADAPTOR POWER SETTING HAM RADIO ADAPTOR ADAPTOR POWER PRECAUTIONS To avoid malfunctions and damages and to achieve full performance please pay careful attention to the following matters 1 During transmission the heat sink may a high temperature approx 50 C 80 C Set the amplifier in a well ventilated place Do not place objects on top of the amplifier Do not operate the amp in places exposed to direct sunlight or close to a heater etc If the antenna matc
6. ng a stabilized DC power supply the output voltage may rise to an abnormal level due to RF signal intrusions Therefore use a power supply with sufficient current capacity 7A or more as well as a good protective device for RF intrusions If the power supply malfunctions discontinue operation by turning off the power switch and make sure the connection of the amplifier to the power supply is correct a diagram is shown on the following page The cord may be burned if the power supply is connected in reverse polarity especially if the power source is a battery Check the polarity well before connection The interior of this amplifier is protected from a reverse polarity connection by a protection circuit 10 CONNECTION DIAGRAM Diagram 1 144 440 MHz Dual Band Antenna 144 440 MHz Dual Band Transceiver MFJ 4035MV DC Stabilized Power SWR Meter or Power Meter Supply or Battery Diagram 2 144 440 MHz Dual Band Antenna 144 MHz Band Transceiver Duplexer BD 25 440 MHz Band Transceiver Des Bund Decken eser 144 440 MHz MFJ 4035MV SWR Meter or Power Meter DC Stabilized Power Supply or Battery 11 Diagram 3 144 MHz Band Antenna Antenna 144 440 MHz Dual ms Band Transceiver 1441440 MHz MEJ 4035MV DC Stabilized Power Supply or Battery SWR Meter or Power Meter 12 440 MHz Band OPERATION 1 2 Turn the
7. power switch on When switching to 144 MHz band 440 MHz band transmitting mode the power amplifier of this unit will operate and a high power signal is sent out through the antenna Re confirm the SWR and power at this time by checking a SWR or power meter Also the band switching of the transmission amp 1s automatically operated by detecting the transmitting signal freguency of the transceiver During 144 MHz band 440 MHz band crossband full duplex operation there may be some minor interference such as noise trouble 1 some reception freguency spots depending on the combination of TX RX freguencies Select TX RX freguencies that show no interference or trouble Especially in the 144 MHz band transmission and 440 MHz band reception select freguencies that are not mutually harmonic 135 BD 25 BOOSTER AMP BLOCK CIRCUIT Pr gt pe G5Y 1 X2 2541020 OUTPUT DC AMP OVR SH 212L 1N60 1 2 M5223L 25 1020 e MIRAGE COMMUNICATION EOUIPMENT 300 Industrial Park Road Starkville MS 39759 USA Tel 601 323 8287 FAX 601 323 6551 ONE YEAR LIMITED WARRANTY Any Mirage Communications product found to be defective in materials or workmanship will be repaired or replaced at Mirage s option for a period of one year from the date of original purchase During the warranty period Mirage Communications will provide free of charge both parts and labor necessary to correct
8. wer Transistor X 1 Transistors X 2 IC X1 Diodes X 8 LED X 5 Accessories 1 Mobile mounting bracket 2 Spare FUSE 8A 3 Instruction Manual 4 Docking adaptor 5 Coaxial jumper cable M M Dimensions 3 4 W 6 0 H 3 4 D in Weight Approx 1 5 Ibs EXPLANATION OF FEATURES MIRAGE BD 25 Dual Band HT Docking Booster 144 440 MHz VHF INDICATOR The VHF Indicator LED indicates the amplifier 1s transmitting on the VHF Band UHF INDICATOR The UHF Indicator LED indicates the amplifier 1s transmitting on the UHF Band PWR INDICATOR The Power Indicator LED indicates the amplifier 1s ON and standing by to transmit POWER SWITCH ON upper position The amplifier 1s ready to transmit Max 30W OFF lower position The amplifier is on receive mode only DC INPUT 13 8V This port has two wires Connect it to a stable DC power supply 13 8V or battery The red wire has a fuse holder and 1s the positive lead The black wire 1s the negative lead FUSE holder is on the positive DC lead 10 ANT The antenna can be connected directly here For duplex operation use a dual band antenna 144 440 MHz which 15 fine tuned on both bands Two mono band antennas can also be used by connecting them through a duplexer unit TX RF INPUT This is a BNC connector that should be connected directly to the handy transceiver DOCKING ADAPTOR There are various adaptors suitable for different mode
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