Midland Radioメーカー79-290の使用説明書/サービス説明書
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2 TABLE OF CONTENTS Specifications Installation Location Mounting the Radio Ignition Noise Interference Antenna Tuning the Antenna for Optimum SWR External Speaker Operation Control and Indicators Fro.
3 TRANSMITTER Power Output AM 4 Watts SSB 12 Watts PEP Modulation AM/SSB Intermodulation SSB 3 rd order, more than -25 dB Distortion 5 th order, more than -35 dB SSB Carrier Suppression 55 dB Unwanted Sideband 50 dB Frequency Response AM 350 to 2500 Hz RECEIVER Sensitivity .
4 Your new Midland model 79-290 represents cutting edge technology in the communications field. From its high tech de tachable control panel to finned cast almuinum transmitter heatsink it incorporates features found on no other CB.
5 Use of a mobile receiver at low signal levels is norm ally limited by the presence of electrical noise. The primary source of noi se in automobile installations is from the vehicle itself. If the CB operates quie tly with the car motor turned off it’s most likely that the car electrical system is generating noise.
6 antenna is shortened. By continuing to shorten the antenna you will notice the SWR reading will reach a low point and then start rising again. This means that you have passed the optimum point for Channel 20. Extend the antenna a short distance and again follow the procedure above.
7 FRONT PANEL DRAWING 1 . ON/OFF VOLUME (inner dual concen tric). Turn clockwise to apply power to the unit and to set the de sired listening level. During normal CB operation, the VOLUME control is used to adjust the output level obtained either at the transceiver speaker or the external speaker, if used.
8 6. WX BUTTON. Press this button for instant selection of the NOAA weather bureau or Canadian receiver. Select the proper channel, with the rotary channel selector, for your area. It is normal to hear the same information on more than one channel, select the channel with best sound.
9 16. SC INDICATOR. LCD indicator showing wh en the scan mode is activated. 17. MIC INDICATOR. LCD indicator showing when the low power microphone mode has been selected. 18. LOC INDICATOR. Indicates the local mode of receive has been selected. 19. FRQ BUTTON.
10 PRESS-TO-TALK MICROPHONE The receiver and transmitter are controlled by the press-to-talk switch on the microphone. Press the switch and the tran smitter is activated, release switch to receive. When transmitting, hold the microphone 2 in. from the mouth and speak clearly in a normal ‘’voice’’.
11 1. Be sure that power source, microphone and antenna are connected to the proper connectors before going to the next step. 2. Turn unit on by turning the VOL control clockwise on your transceiver. 3. Set the VOLUME for a com fortable listening level.
12 An SSB signal may be received only when the listening receiver is functioning in the same mode. In other words, an upper sideband signal (U SB) may be made intelligible only if the receiver is functioning in the USB position.
13 which fails due to a defect in material or workmanship within one y ear following the initial consumer purchase. This warranty does not include any carrying cases, earphones, or telescoping antenna.
デバイスMidland Radio 79-290の購入後に(又は購入する前であっても)重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります:
Midland Radio 79-290をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはMidland Radio 79-290の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Midland Radio 79-290の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Midland Radio 79-290で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Midland Radio 79-290を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はMidland Radio 79-290の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Midland Radio 79-290に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちMidland Radio 79-290デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。