Yaesu ft-7800r service manual




















This control sets the threshold level at which received signals or noise will open the squelch. In the Memory mode, press this key momentarily to allow tuning in 10 channel steps on the memory channels. You can program the alternate press and hold in function of this key to another function, if desired. See page 60 for details. While operating on the VFO mode, press this key momentarily to toggle the operating.

Press this key momentarily to activate the Smart Search feature. DIAL knob. This position detented rotary switch is the tuning dial for the transceiver. It is used for most tuning, memory selection, and function setting tasks on the transceiver. PWR Switch. ANT Jack. Cooling Fan. The cooling fan rotates during transmission, and for 30 seconds after the radio returns to the receive mode after transmitting. DATA Jack. The pin connections are shown on page This 2-conductor, 3.

The optimum load impedance is 8 Ohms. This is the DC power supply connection for the transceiver. Use the supplied DC cable to connect this pigtail to the car battery or base station DC power supply capable of at least 9 Amperes continuous duty. PTT Switch. These 16 keys generate DTMF tones during transmission.

Press this key momentarily to disable the noise squelch action, allowing you to hear very weak signals near the background noise level. In the Memory mode, this allows tuning in 10channel steps on the memory channels.

You can program the [P1], [P2], [P3], and [P4] buttons for other functions, if desired. LAMP Switch. LOCK Switch. Press or hold in either of these buttons to tune or scan up or down the operating frequency or through the memory channels. In many ways, these buttons emulate the function of the rotary DIAL knob. While operating on the VFO mode, press this but- ton momentarily to toggle the operating band as fol- lows:. To turn the transceiver on, press and hold in the.

To turn the transceiver off, again press and hold in. At first, set the SQL knob fully counter-clockwise. Now, you may rotate the VOL knob clockwise to ad- just the receiver volume for a comfortable listening.

To set the squelch, turn the SQL knob clockwise a slightly past the point where the background noise is muted. This is the point of best sensitivity to weak sig-. This feature allows you to set the squelch so that only signals exceeding a certain S-meter level will open the squelch.

See page 24 for details. This feature is extremely useful for making rapid frequency excursions over the wide tuning range. To enter a frequency from the MH A6J keypad, just press the numbered digits in the proper sequence. Examples: To enter The FTR will stop when it receives a signal strong enough to break through the squelch threshold. See page 41 for details regarding the VFO Scan operation.

If you wish to reverse the direction of the scan i. The scanning direction will be reversed. To revert to scanning toward a higher frequency once more, rotate the DIAL knob one click clockwise.

However, in this case, the scanner will sweep frequencies only on the current band. If you would like the scanner not to be restricted to the current.

BND to allow the scanner to hop to the low edge of the next-highest band when the VFO frequency reaches the high end of the current band or viceversa. See page 75 for details. When your transmission is complete, release the PTT switch; the transceiver will revert to the receive mode.

You can select from among a total of four transmit power levels on your FTR. These power levels will be stored, in memory registers, at the time of memory storage see page 32 for details on Memory operation.

During transmission, the Bar Graph will deflect in the display, according to the power output selected. Welcome to ManualMachine. We have sent a verification link to to complete your registration. Log In Sign Up. Forgot password? Enter your email address and check your inbox. Please check your email for further instructions. Enter a new password. Yaesu ft r User Manual Download for 1.

Memory Operation In mobile installations, it is preferable to mount your antenna on top of the roof of the vehicle, if feasible, so as to utilize the car body as a counterpoise for the antenna and raise the radiation pattern as far away from passengers as possible. During vehicular operation when stopped in a parking lot, for example , make it a practice to switch to Low power if there are people walking nearby.

Pull over to the side of the road, whether dialing manu- ally or using the auto-dial feature. The pin connections of the Data connector are shown below. SQL Knob This control sets the threshold level at which received signals or noise will open the squelch.

DIAL knob This position detented rotary switch is the tuning dial for the transceiver. Cooling Fan The cooling fan rotates during transmission, and for 30 seconds after the radio returns to the receive mode after transmitting. PTT Switch Press this switch to transmit, and release it to receive. After this interval, the display will switch its normal indication of the operating frequency. Now, you may rotate the VOL knob clockwise to ad- just the receiver volume for a comfortable listening level, using the background noise as a reference.

This is the point of best sensitivity to weak sig- nals, and we recommend that you not rotate the SQL knob very much past the point where the background noise is just silenced. Clockwise rotation of the DIAL knob causes the FTR to be tuned toward a higher frequency, while counter-clockwise rotation will lower the operating frequency. This feature is extremely useful for making rapid frequency excursions over the wide tuning range of the FTR.

If you would like the scanner not to be restricted to the current band, you may change Menu 46 VFO. You can only view or download manuals with. Sign Up and get 5 for free. Upload your files to the site.

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