User manual YAESU FT DX 9000MP

[. . . ] FT DX 9000MP Operation Manual DESCRIPTION GENERAL DESCRIPTION We wish to take this opportunity to thank you for your purchase of the FT DX 9000MP Transceiver!But it also is the product of our company's fifty years of engineering, design, and manufacturing know how. As pioneers in the development of SSB, we have led the technological advances in Amateur Radio communications over the last half century. And now, with the introduction of the FT DX 9000MP, we again lead the way with a no-compromise 21st-century design that will make your operating dreams come true. [. . . ] To disable the Audio limiter, press the [AFL] switch once more; the imbedded LED will turn off. ADVICE Because the AFL feature will generally reduce the overall audio level, we recommend that it be left Off unless special operating conditions warrant its use. SUB BAND (VFO-B) AFL SETUP 1. Press the Sub (VFO-B) band's [RX] switch to engage Dual Receive operation. Press the Sub (VFO-B) band's [AFL] switch to turn on the Audio Limiter. To disable the Audio limiter, press the [AFL] switch once more; the imbedded LED will turn off. FT DX 9000MP OPERATION MANUAL Page 83 COMFOR EFFECTIVE RECEPTION OMFORT TOOLS FOR COMFORTABLE AND EFFECTIVE RECEPTION ADJACENT CHANNEL MONITOR (ACM) CW MODE ONLY While operating on CW on the Main band (VFO-A), the ACM feature provides a visual indicator of encroachment by another station (someone you may not be able to hear because of the tight DSP filter in your FT DX 9000MP). The presence of a nearby strong signal will be displayed on the Sub-receiver's S-meter. The Sub (VFO-B) receiver is taken over by the ACM, when engaged, and reception on the Sub band (VFO-B) is not possible while ACM it turned on. VDD BIAS TEMP SWR [ACM] Switch To activate the Adjacent Channel Monitor, press the [ACM] switch. ADVICE If you do not have Dual Receive engaged, turning on the ACM feature will cause the [RX] LED associated with the Sub (VFO-B) receiver to become illuminated. When ACM is turned on, the frequency of the Sub (VFO-B) receiver will automatically be set to match that of the Main (VFO-A) receiver. When operating on Dual Receive, engaging the ACM feature automatically sets the Sub (VFOB) receiver to the same frequency as the Main (VFO-A) receiver, and by inverting the DSP filter the Sub receiver is used for monitoring (visually) for activity outside your current receiver passband on the Main receiver. When ACM is turned on during Dual Receive operation, the audio from the Sub (VFO-B) receiver will disappear. A typical operating circumstance where ACM can help is when you are running stations during a contest in a 250 Hz bandwidth. If stations suddenly stop calling you, it may be because another strong station has started calling CQ near your frequency. By engaging ACM, your Sub-receiver S-meter will display the strongest station on the area ±1. 2 kHz from your current operating frequency; if the encroaching station is sufficiently close, you might want to ask him or her kindly to QSY. 1. 05Hz 300Hz 1. 05Hz Page 84 FT DX 9000MP OPERATION MANUAL COMFOR EFFECTIVE RECEPTION OMFORT TOOLS FOR COMFORTABLE AND EFFECTIVE RECEPTION AUDIO FILTER OPERATION The left [FILTER(A)] switch on the FPS-9000H allows adjustment of the left speaker audio response, while the [FILTER(B)] switch on the FPS-9000H allows tailoring of the right side speaker's audio response. The optimum filter setting will depend on the operating mode and band/noise conditions. For example: SSB operation Setting the HIGH CUT filter to 2. 4 kHz will cause audio components above that frequency to be attenuated at a rate of ­6 dB per octave. This will cut high-pitched noise, and give the audio a more mellow sound. CW operation Setting LOW CUT to 500 Hz, and HIGH CUT to 700 Hz, will create a bandpass filter with its peak at 600 Hz. AM and FM operation You will want to begin operation in the "NORM" (Normal) position, corresponding to the widest fidelity available. If specific noise or interference should arise, try engaging one or both of the filters. See the charts for further information about the typical response curves for these highly useful filters, which oftentimes can significantly enhance reception. NOTE It is possible to mute the audio from the speaker(s), if desired; see page 40. To mute the audio from the Main receiver (left speaker), press the [MUTE(A)] switch. [. . . ] Pressing this key selects the "General Coverage" VFO register, for reception outside the Amateur bands. Pressing this key momentarily engages the "direct frequency entry" mode of operation, whereby the keys described in the (A) and (B) sections above are used for directly programming the operating frequency. Once the frequency has been successfully entered, press the [ENT] key once more to exit to the newlyselected frequency. For entering a frequency directly into the Sub (VFOB) band register, press this key. Then use the keys described in sections (A) and (B) above for entering the digits of the desired frequency; when done, press the [V-B] key once more to lock the newly- selected frequency into the Sub band (VFO-B) register. [. . . ]