User manual KENWOOD TS-430S

[. . . ] Consult your car manufacturer and amateur radio equipment dealer for the requirements and installation. This equipment generates or uses radio frequency energy. Changes or modifications to this equipment may cause harmful interference unless the modifications are expressly approved in the instruction manual. The user could lose the authority to operate this equipment if an unauthorized change or modification is made. INFORMATION TO THE DIGITAL DEVICE USER REQUIRED BY THE FCC This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. [. . . ] AMTOR activity can be found on or near 14075 kHz and 3637. 5 kHz. These are also good starting places when searching for PacTOR, CLOVER, G-TOR, or PSK31 stations. The TS-480 transceiver has special DSP filters for these digital modes. Refer to page 48 for details. Note: When using SSB mode for digital operation, use a fast AGC setting and switch your Speech Processor OFF. PACKET RADIO Packet is a unit of data transmitted as a whole from one computer to another, on a network. Packets can be transmitted on radio waves as well as on communications lines. Besides a transceiver and a computer, all you need is a terminal node controller (TNC) or Multimode Communications Processor (MCP). One of the tasks of TNCs and MCPs is to convert data packets to audio tones, and vice versa. Connecting a TNC to this transceiver allows you to use many packet applications. A variety of packet applications developed by hams include packet bulletin board systems (PBBSs). PBBSs are created and maintained by volunteers called System Operators (SysOp). You may access one of your local PBBSs to send e-mail, download files, or obtain various useful information. Amateur Radio fax functions much like old analog fax systems. It scans paper and converts acquired image data into a series of tones representing white and black portions of the image. Because fax requires longer transmission time, you should use it only when band conditions are stable with strong signals. Popular fax frequencies include the following: · 7245, 14245, 21345 (International Net), and 28945 kHz Operating on SSTV or fax mainly involves learning the functionality of your computer application or accessory hardware that supports these modes. Consult the instruction manual that comes with your software or accessory equipment. Note: When operating either SSTV or fax, use a fast AGC setting and switch OFF your Speech Processor, for best results. 44 REJECTING INTERFERENCE IF FILTER The IF filters are designed for selecting the exact range of intermediate frequencies that are sent to the next stage in the receive circuit. Interference adjacent to the desired signal can be reduced by selecting a narrow bandwidth filter and/ or shifting the center frequency of the filter. To more effectively remove interference, combine the IF filtering and the DSP filtering (AF) described on pages 46 and 47. IF Filter bandwidth DSP Filter (AF) bandwidth ~ 600 Hz ~ 2. 0 kHz YF-107CN YF-107C YF-107SN ~ 300 Hz 270 Hz 500 Hz 1. 8 kHz -- -- -- -- -- -- -- -- -- -- -- -- 2. 4 kHz (Normal) 1. 8 kHz (Normal) 500 Hz (NAR) 270 Hz (NAR) 2. 4 kHz (Normal) 2. 4 kHz (Normal) 1. 8 kHz (Normal) 500 Hz (NAR) 270 Hz (NAR) 270 Hz (NAR 2) CHANGING THE IF FILTER BANDWIDTH When adjacent frequency interference is present at both sides of the desired signal, narrowing IF filter bandwidth may be the best way to remove the interference. Changing the filter bandwidth will not effect the current reception frequency. You can install 2 optional IF filters for SSB, CW, and FSK modes. After installing the optional filters {page 81}, the transceiver automatically recognizes what type of optional filters are installed. SSB/ AM When you operate the transceiver in SSB or AM mode, you can manually select the wide or narrow filter. [. . . ] 32 Transmitting a . . . . . . . . . . . . . . . . . . . . . . . . 32 1750 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Tuning control Adjustment Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Transmit Inhibit . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]