Kenwood SP-230 Operating Manual

Also see for SP-230: Service manual

USING COMBINED FILTERS1. When both LOW and HIGH 1 filters are engaged, thepass bandwidth ranges.from 500 Hz to 3 kHz.2. When both LOW and HIGH 2 filters are engaged, band-width is 500 Hz to 1.5 kHz.3. LOW' HIGH 1 and HIGH 2 filters engaged, 500 Hz to1 kHz.500Hz 1 kHz 1.5kHz 3kHzLOW HIGH 1. 2 HIGH 2 HIGH 10000000000000000000008"123REAR PANEL1, 2 I NPUT connectorsAccepts aud io output from two sources.3 LINE OUT ConnectorStandard line output through the filters for RTTY.SSTV, or similar use.LOW-PUSH ON-rf'ILTERSILOW HIGH I HIGH2E1GEIN.;r-------+--+--~ ~ SP!~E.L-_f-+..J INPUT.D.AIs4l=B L.::.J.- B (Oot--j-IINPUTLA (Oot---'USE OF FILTERSIn general, it is desired that a CW, AM, or similar trans-mission be received clearly within the usual communica-tion audio bandwidth, 300 Hz - 3 kHz. However. QRM,QRN or RFI may lower the overall signal-to-noise ratio atthe receiver, resulting in degraded reception. In theory, asthe pass-band width of the I F stages is narrowed, the equi-valent noise bandwidth will also narrow, thus improvingthe signal-to-noise ratio. Alternately, the bandwidth of theAF stage can be narrowed to attenuate the noise com-ponent, enhancing reception.Proper filter selection depends on transmission modeand type of noise encountered.1. SSB: use the HIGH 1 and LOW filters, or the HIGH 2and LOW filters. In more severe cases, use both HIGH 1+ HIGH 2, and LOW filters.2. CW: use the HIGH 1 and HIGH 2 filters or HIGH 1 +HIGH 2 and LOW in combination.INSTALLATION OF EXTENSION FEETTo install the extension feet, screw to the front, bottomof the cabinet as illustrated below.~ Extension footkSCreW(M4)A product ofTRIO-KENWOOO CORPORATION17-5. 2-chome. shibuya. shibuya-ku Tokyo 150. JapanTRIO-KENWOOO COMMUNICATIONS1111 West Walnut Street. Comcton Centcrrna 90220. USATRIO-KENWOOO COMMUNICATIONS, GmbH0·6374 Sternbach TS.lndustliestrasse SA. West GermanyTRIO-KENWOOD ELECTRONICS, N.V.leuvensesteenweg 504. 6·1930 Zavent em BelgiumTRIO-KENWOOO [AUSTRAUAJ PTY. LTD.4E Woodcock Place. Lane Cove N S.W 2066. Australia© 15105 PRINTED IN JAPAN 850-2759-00 (K.O)

/ 2

Related manuals for Kenwood SP-230