Icom IC-751 Инструкция по эксплуатации онлайн [17/37] 68913

Содержание

• Ic 75h 1
• Ic 75h 2
• General 4
• Receiver 4
• Section 1 specifications 4
• Transmitter 4
• All band all mode all solid state 5
• Dual vfo 5
• General coverage receiver capability 5
• Memories 5
• Other features 5
• Outstanding receiver performance 5
• Section 2 features 5
• Transmitter 5
• 1 unpacking 6
• 2 recommendations for 6
• 3 power supply 6
• Be sure to read the following instructions carefully before operation 6
• Installation 6
• Section 3 installation 6
• 10 headphones 7
• 4 antenna 7
• 5 ground 7
• 6 microphone 7
• 8 cw key 7
• 8 rtty 7
• 9 external speaker 7
• 1 front panel 8
• 11 cooling fan 8
• By the monitor curcuit the fan will operate during both 8
• Cause of the overheating before starting to transmit again 8
• Cooling but with 200 watts input the final stage produces 8
• If the temperature rises to a danger limit 90 c the fan 8
• Mit modes 8
• Of the final stage the fan operates as follows 8
• Overheating i e antenna mismatch etc and correct the 8
• Perature monitoring circuit which monitors the temperature 8
• Plug inserted completely only the headphone works 8
• Power is reduced to 50 watts investigate the cause of 8
• Prolonged transmissions the fan is connected to a tem 8
• Quite a bit of heat and its temperature may rise during 8
• Section 4 operating controls 8
• The fan does not operate both in the receive and thans 8
• The headphone will lose the sound on one side with the 8
• The rear of the pa unit is designed to provide for adequate 8
• Transmit and receive to provide additional cooling 8
• Using a tape recorder connected to the headphone jack 8
• When the temperature rises to a point 50 c detected 8
• Will run much more rapidly at this time the output 8
• With a stereo headphone set inserted this way however 8
• 2 top cover 13
• 3 rear panel connections 13
• And attenuator are removed from the circuit and incoming 13
• Anti vox circuit with this control along with the vox 13
• Anti vox control 13
• Attenuation 13
• Calibrates the marker frequency with a standard frequency 13
• Controls the audio level of the monitoring ssb or cw side 13
• For normal operation leave this switch in the off 13
• Gain control so that the vox circuit only operates by the 13
• In vox operation the vox circuit may be operated by 13
• Marker calibrator 13
• Marker switch 13
• Monitor level control 13
• Operator s voice not by sound from the speaker 13
• Position 13
• Preamp att attenuator switch 13
• Put in the rf circuit and provides higher sensitivity 13
• Quency is available on every 10khz 13
• Signals will be fed to the receiver directly 13
• Sound from the speaker causing a switch to transmit this 13
• Such as the wwv 13
• Switches rf preamplifier and attenuator in the rf circuit 13
• The attenuator into the circuit this gives about 20db 13
• The switch in the pre position and the preamplifier is 13
• This removes the preamplifier from the circuit and inserts 13
• Tone when the monitor switch on the front panel is 13
• Trouble can be prevented by adjusting the input level of the 13
• Turned on adjust the control for comfortable monitoring 13
• Turns the marker circuit on or off the marker fre 13
• Very strong signal set this switch in the att position 13
• When nearby signals interfere with reception or receiving a 13
• When the switch is in the off position both preamplifier 13
• When using a small antenna or receiving a weak signal set 13
• 1 how to tune 15
• Section 5 operating instructions 15
• N n n 1 19
• 2 memory channel operation 20
• 3 tuning by up down buttons on 22
• The microphone 22
• 4 scanning operation 23
• 5 ssb operation 24
• 6 cw operation 26
• 7 rtty operation 27
• 8 am operation 28
• 9 fm operation 28
• 10 general coverage receiver 29
• 11 other operations 29
• 1 installation of optional filter 31
• Section 6 option installation 31
• 2 built in power supply unit 32
• Ic ps35 32
• Ic ом 37

Похожие устройства

• Ardo DWB09L6X Инструкция по эксплуатации
• Icom IC-756 Инструкция по эксплуатации
• Ardo FLOI86E Инструкция по эксплуатации
• Samsung GT-C3322 Metallic Black chat on Инструкция по эксплуатации
• Icom IC-756PRO Инструкция по эксплуатации
• Ardo FLOI147L Инструкция по эксплуатации
• Samsung GT-S5222 Black Инструкция по эксплуатации
• Icom IC-756PROII Инструкция по эксплуатации
• Ardo FLOI126L Инструкция по эксплуатации
• Nokia Asha 305 Dark Grey Инструкция по эксплуатации
• Icom IC-756PROIII Инструкция по эксплуатации
• Ardo FLOI106S Инструкция по эксплуатации
• Texet TX-D6205A Black Инструкция по эксплуатации
• Icom IC-775DSP Инструкция по эксплуатации
• Ardo DWC06S5B Инструкция по эксплуатации
• Icom IC-207H Инструкция по эксплуатации
• Ardo DWC06E3W Инструкция по эксплуатации
• Texet TX-D6205A Black/Red Инструкция по эксплуатации
• Icom IC-2100H Инструкция по эксплуатации
• Ardo FLSN 103 EW Инструкция по эксплуатации

MHz and further turning of the control brings the fre quency to the next upper MHz range 15 000 0MHz and continues up the frequency from there By turning the control counterclockwise the operating frequency changes in like manner to the next lower MHz range section very carefully and perform the operation several times until you are comfortable with the system Try the example for practice Brake Adjustment If the control is too loose or too stiff for comfortable use you can adjust the torque by tightening or loosening the brake adjustment screw accessible from underneath the set 1 VFO A is for both receiving and transmitting selected by pushing the VFO switch The receive transmit frequency will be controlled by the VFO displayed on the frequency display and stored in A memory and and A the 2 VFO B is for both receiving and transmitting selected by pushing the VFO switch The receive transmit frequency will be controlled by the VFO displayed on the frequency display and stored in B memory and and B the Switching from one VFO to the other VFO does not clear the first VFO The frequency operating mode and HAM GENE mode are retained in the VFO s memory FOR EXAMPLE If 14 252MHz and USB are set with the VFO A then the VFO switch is pushed to select the VFO B the frequency display will show VFO B s frequency and mode but 14 257MHz and USB are still stored in the VFO A s memory Pushing the VFO switch again to return the VFO A 14 257 0 and USB will be displayed on the frequency display Accordingly if the VFO switch is pushed again to the VFO B the frequency and mode that were set with the VFO B will appear It is unnecessary to remove the bottom cover for the brake adjustment The following instructions should be used to adjust the tension of the Tuning control 1 The Tuning control tension will become tighter by turning the brake adjustment screw clockwise and will become looser by turning the screw counterclockwise 2 While performing this adjustment the Tuning control must be turned continuously as the screw is adjusted in order to set the tension for a comfortable touch NOTE When the letters VFO A or VFO B are displayed on the frequency display we call this condition as VFO MODE when the letters MEMO are displayed above the memory channel number we call as MEMORY CHANNEL MODE à Pushing the VFO switch to select the VFO B These can be changed by pushing the VFO MEMORY switch alternately LSB Tncnn LI J I U n u VFO B 5 1 6 DIAL LOCK SWITCH After the IC 751 is set at a certain frequency for rag chew ing mobile operation etc by pushing the Dial Lock switch the VFO is locked at the displayed frequency thus inacti vating the operation of the tuning control To change the frequency the Dial Lock must first be disengaged by pushing and releasing the Dial Lock switch again Pushing the VFO switch again to return the VFO A 5 1 7 VFO SWITCH The IC 751 contains two VFO s for both receiving and transmitting The VFO s are labeled VFO A and VFO B and are selectable by pushing the VFO switch alter nately in the VFO MODE The dual VFO system gives the IC 751 many very convenient features Please read this This allows you to set a certain frequency with one VFO work up and down the band with the other VFO and periodically check the set frequency simply by switching between VFO A and B 14