Icom 761 manual

VFO knob has become a bit stiff as is common. The desirable UT voice synthesizer is installed. With nice cloth cover No mic. Prefer local pickup, but can quote shipping. Includes the AC power cord and photocopy of the Owner's Manual. The used items on this page have been sold! They are shown for informational and archival purposes only.

Click here for currently available Used List. Click here for currently available Used Photos. This wide range is accomplished by means of up-conversion using a high side IF and a CPU control system. This advanced system produces a higher spurious response rejection ratio, a higher Receiver sensitivity and a wider dynamic range. The serial port uses a standard bps data rate. User Manual. Comments No comments yet. IC-F3S Schematic. IC-F3 F4 Service manual.

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Remarks : If the unit tunes in only one direction, i. Symptom : Loud, high pitched squeal emanates from inside radio. May be intermittent. Cure : Replace DP-6 on the display unit. Symptom : A whine emanates from inside radio in TX only at certain power levels.

Transmitter works ok. Cure : Replace T2 on reg. All stated specifications are subject to change without notice or obligation. Replace plastic trimmer capacitors C78, C88, C97, and C with ceramic equivalents. While the PLL unit is lifted, we recommend resoldering the joints in the regulator section as this area runs hot. Bad components on the RF unit, probable result of RF overload.

Replace faulty Q15 2SCB. Intermittent RX sensitivity. RX disappears when outer shield of antenna coax is connected. There are probably other problems on the RF unit if this capacitor is bad. Replace Q14 2SC The power to the radio flutters on and off when the TX power output is increased toward maximum. Cracked solder in the current-sensing circuit of the power supply is shutting it down prematurely. This resistor appears as a metal bar soldered to the bottom PC board.

No base bias voltage at driver or PA transistors. Check the value of R22 4.