Midland 79-290 Owner'S Manual Download Page 2

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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
Front Panel
Real Panel
Operating Procedure to Receive
Operating Procedure to Transmit
Receiving SSB signals

SPECIFICATIONS (CB)

GENERAL

Channels

40 CH/AM//USB/LSB (120 ch. total)

Frequency Range

26.965 + 27.405 CB

Frequency Control

Phase Lock Loop (PLL) synthesizer

Frequency Tolerance

0.005%

Frequency Stability

0.001%

Operating Temperature

Range

-20° C to + 50° C

Microphone

Plug-in dynamic; with push-to-talk switch

and coi

Input Voltage

13.8 V DC nominal, 15.9 max.,

11.2 V min ( negative ground)

Summary of Contents for 79-290

Page 1: ......

Page 2: ...ure to Receive Operating Procedure to Transmit Receiving SSB signals SPECIFICATIONS CB GENERAL Channels 40 CH AM USB LSB 120 ch total Frequency Range 26 965 27 405 CB Frequency Control Phase Lock Loop PLL synthesizer Frequency Tolerance 0 005 Frequency Stability 0 001 Operating Temperature Range 20 C to 50 C Microphone Plug in dynamic with push to talk switch and coi Input Voltage 13 8 V DC nomina...

Page 3: ...SSB IF Frequency AM FM 10 695 MHz 1st IF 455 kHZ 2nd IF SSB 10 695 MHz Adjacent Channel Rejection 60 dB AM SSB Automatic Gain Control Less than 10 dB change in audio AGC output for inputs from 10 to 100 000 microvolts Squelch Adjustable threshold 50 uv tight 1000 uv Audio Output Power 4 watts into 8 ohms WEATHER RECEIVER Channels 1 162 550 2 162 400 3 162 475 4 162 425 5 162 450 6 162 500 7 162 52...

Page 4: ...u have determined the most convenient location in your vehicle hold the transceiver with mounting bracket in the exact location desired If nothing will interfere with mounting it in the desired position remove the mounting bolts Before drilling the holes make sure nothing will interfere or be damaged by the installation of the mounting bolts 2 Connect the antenna cable plug to the standard recepta...

Page 5: ...is necessary to run a separate ground wire from the unit to a good metal electrical ground in the vehicle When installed in a boat the transceiver will not operate at maximum efficiently without a ground plate unless the vessel has a steel hull Before installing the transceiver in a boat consult your dealer for information regarding an adequate grounding system and prevention of electrolysis betwe...

Page 6: ...ur antenna check the following A All doors must be closed when adjusting the antenna B Make sure the antenna base is grounded C Check your coaxial cable routing it may be pinched when routed into the car D Try a different location on your car keeping in mind the radiation pattern you wish E Is the antenna perfectly vertical F Try a different location in your neighborhood Stay away from large metal...

Page 7: ...otation will increase the threshold level which a signal must overcome in order to be heard Only strong signals will be heard at a maximum clockwise setting 3 MIC BUTTON Adjusts the microphone power in the transmit mode This is a push on push off switch When the MIC symbol is visible in the LCD screen it indicates a reduced microphone power level This mode is useful when operating in a high noise ...

Page 8: ... memory channel indicator lights Your selected channel is now entered at M1 Repeat the above operation for M2 through M4 To recall a memory channel just press the the M button 11 BD BUTTON Band Button This button is used to select the LSB USB AM mode of operation Unless the station with which communication is desired is equipped with SSB the AM mode is normally used The band BD button changes the ...

Page 9: ...e second channel you wish to monitor and press the DW button again Your radio now toggles between the 2 selected channels until a signal is heard When a signal is heard the radio will stop on the channel to allow you to listen and will remain on the channel 10 seconds after the signal disappears to allow answering of the received call To exit the dual watch mode press the DW button again 23 SRF ME...

Page 10: ...lways use care when removing or replacing the control panel NOTE Before removing the front panel turn the power off To replace the panel insert the left edge first and slowly push the panel in place until locked Due to the microprocessor control at rare times errors may occur in the display or the display may become blank Usually these errors can be cleared by removing and replacing the control pa...

Page 11: ...re 3 types of signals presently used for communications in the Citizens Band AM USB and LSB When the MODE switch on your unit is placed in the AM position only standard double sideband full carrier signals will be detected An SSB signal may be recognized while in the AM mode by its characteristic Donald Duck sound and the inability of the AM detector to produce an intelligible output The USB and L...

Page 12: ...le by the voice lock control When listening to AM transmission a correct sideband is heard in either mode since both upper and lower sideband are received Once the desired SSB mode has been selected frequency adjustment may be necessary in order to make the incoming signal intelligible the CLARIFIER control allows the operator to vary frequency above and below the exact center frequency of the rec...

Page 13: ...Warranty Service Department This warranty gives you specific legal rights and you may also have other rights which vary from state to state Note The above warranty applies only to merchandise purchased in the United States of America or any of the territories or possessions or from a U S military exchange For warranty coverage on merchandise purchased elsewhere consult the supplemental warranty in...

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