User manual YAESU FT-23R

[. . . ] In order to gain the most enjoyment and operating efficiency from your FT-23R, we recommend that you read this manual in its entirety, and keep it handy for reference as you explore the many capabilities of your new transceiver. Before using your FT-23R, be sure to read and follow the instructions in the "Before You Begin" section of this manual. GENERAL DESCRIPTION Congratulations on the purchase of your Yaesu amateur transceiver!Whether this is your first rig, or if Yaesu equipment is already the backbone of your station, rest assured that your transceiver will provide many hours of operating pleasure for years to come. The FT-23R is an elite-class HF transceiver providing exceptional performance both on transmit and receive. [. . . ] Rotate the [SUB VFO-B] knob to change the setting to "SLP SLP. " SLP 4. Press and hold in the [MENU] button for two seconds to save the new setting and exit to normal operation. You will now be using the Sloped AGC system. Input Signal [MENU] Button Main Tuning Dial Knob [SUB VFO-B] Knob MUTE FEATURE (MAIN (VFO-A) BAND) There may be occasions, during Dual Receive operation, when you want to silence the Main (VFO-A) receiver temporarily so as to concentrate on what's being received on the Sub (VFO-B) receiver. The Mute feature makes this simple to accomplish. The Main (VFO-A) receiver will be silenced, and the green LED in the [RX] switch will blink. To restore reception on the Main (VFO-A) receiver, just press the blinking [RX] switch/LED once more. ADVICE: If you press the [POWER] switch momentarily while the transceiver is turned on, the transceiver's audio will be muted for three seconds. Main [RX] Switch FT-23R OPERATING MANUAL Page 63 SSB/AM MODE TRANSMISSION [MOX] Button [METER] Switch [MODE] Button CLAR + [MIC] Knob [RF PWR] Knob Main Tuning Dial knob 1. The operating mode is selected using the [MODE] buttons to the left of the Main Tuning Dial knob, and the VFO (A or B) to which the selection is applied is selected by the [A] or [B] button above the [MODE] buttons. Usually, the [A] button glows Red, signifying that the Main band (VFO-A) is being adjusted. Similarly, pressing the [B] button will cause its indicator to blink Orange for five seconds, signifying Sub band (VFO-B) adjustment. Therefore, press the [A] or [B] button to select the desired VFO, then press the [LSB] or [USB] button to select one of the SSB modes. The Sub band (VFO-B) frequency display will show the RF Power Output for 3 seconds whenever the [RF PWR] knob is turned. You may disable this feature (displaying the RF Power Output) via Menu item "015 diSP LVL IND. " See page 113 for details. The analog PO meter indicates the average power output level. SSB transmit average talk power is normally 10% to 50% of the peak power output. Voice characteristics, microphone qualities, parametric equalizer and compression settings affect actual talk power output. When performing tests (such as the setup of the [MIC] or [RF PWR] knobs), be sure to check the frequency before transmitting, so as to avoid interference to others who may already be using the frequency. Four techniques for exercising Transmit/Receive control are provided on the FT-23R, and you may choose the technique(s) that best suit your operating needs: Pressing the microphone's PTT switch will engage the transmitter. The rear panel PTT jack may be connected to a foot switch or other manual switching device in order to engage the transmitter. Pressing the front panel [MOX] button will lock the transmitter on. Press the [MOX] button again to return to receive. The VOX (Voice Operated Xmit) circuit will engage the transmitter automatically when you speak into the microphone. [. . . ] Main (VFO-A) Mode ­6 dB ­60 dB CW/RTTY/PKT 0. 5 kHz or better 750 Hz or less SSB 2. 4 kHz or better 3. 6 kHz or less AM 6 kHz or better 15 kHz or less FM 15 kHz or better 25 kHz or less (WIDTH: Center, VRF: OFF) Sub (VFO-B) Mode ­6 dB ­60 dB CW/RTTY/PKT 1. 1 kHz or better 3. 0 kHz or less SSB 2. 2 kHz or better 4. 5 kHz or less AM 6 kHz or better 25 kHz or less FM 12 kHz or better 30 kHz or less 70 dB or better (160 - 10m Amateur bands) 60 dB or better (6m Amateur band) 2. 5 W into 4 Ohms with 10% THD 4 to 8 Ohms (4 Ohms: nominal) Less than 4000 W Squelch Sensitivity: (RF AMP 2 "ON") Selectivity (­6/­60 dB): Image Rejection: Maximum Audio Output: Audio Output Impedance: Conducted Radiation: Specifications are subject to change, in the interest of technical improvement, without notice or obligation, and are guaranteed only within the amateur bands. FT-23R OPERATING MANUAL Page 127 INSTALLATION OF THE OPTIONAL FILTER (YF-122C OR YF-122CN) 1. Turn the front panel [POWER] switch "off, " then turn the rear panel's [POWER] switch "off. " 2. Disconnect the all cables from the transceiver. Referring to Figure 1, remove the three screws from each side of the transceiver, and three screws from the top edge of the rear panel. [. . . ]