LOCATION Where you place the hooter In your automatize is not critical and should be governed by Convenience accessibility, Since: the unit s so. compact, many. moils: possibilities present. themselves, : h: general, the: mobile mounting bracket will provide you With sore: guide as 1o placement.: Any place: where it -can be mounted with natal screws, bolts, or pop-rivets will work | For fixed station: dss/ the power supply should be designed 1o produce 3 amps forth booster.
ANTENNA: The 'moist important 'single’ item’ that will influences the performance oF any communication stern is the-antenna. For that reason: 8 good, high-quality, gain antenna of 50 ohms impedance is recon: mended; fixed or mobile. In VHF as well 85 the low bands, every watt o1 ERP makes some difference. Therefore, 10 wails average output plus 3dB of ‘gain antenna salsas 20 watts ERP. presuming low VESPER of warhorse: Tha Tew mare dollars invested in & gain type antennas well wort hit.
8 it Make sure: both power switches of the transceiver and booster are in the OFF position, then connect the power cord; coaxial cable ete; thesis drawing shown oft page 8, Now neurotransmitter 1S reedy 1o use. When you turn ON the power switch of the transceiver, polonaise or audio wil e heard Fran the speaker showing that the set sin receive. 1 yol switch:to transmit farm this condition; the 2.
Sl ool et ot e POWER: AMPLIFIER CIRCUIT The 2.3 watts input from the transceiver is fed to the base of Q1 through T/R switching diode, D2, and:after being amplifier by Q15 and harmonics suppressed by an M-derived fitter) spoliation 1o the.
D4 are turned ON antithetic power amplifier circuit will: work:: At the same time; the SEND:indicator LED s it 1.the APC circuit operates; Pin: 11 6f 101 18 drought to.a LOW level and G4 is cut out. T/R Switch: diodes 32, and D4 deactivate; causing a direct definition to the antenna, e ' NOTE: Measuring instrument is s BOKQ/AV millimeter. TRANSMIT RECEIVE Tr No. i i : REMARKS BASE I COLLECTOR EMITTER ! ' BASE L COLLECTOR N EMITTER : a1 =0.1 128 GND: 0 138 GND o 138 Q8 13.
