Kenwood TH-F6A Instruction Manual

Also see for TH-F6A: Service manual Instruction manual Supplemental service manual Service manual Quick reference

Contents

45INTERFACING TO PERIPHERALSSP/MIC JACKThe SP/MIC jack on the transceiver can beconfigured to interface to various kind of theperipherals available for the transceiver, such as aspeaker microphone (SMC-32/ 33/ 34), PC interfacecable and a TNC. Access Menu No. 9 (SP/MICJACK) and select the peripheral type from “SP/MIC”,“TNC”, and “PC”.You can further configure the transceiver to interfaceto a high speed (9600 bps) TNC that requires a directFM modulation {below}.SELECTING SP/MIC JACK FUNCTIONUnless you connect the transceiver to a TNC or PC,the default setting of the SP/MIC jack function (MenuNo. 9), “SP/MIC” works fine. However, if you want tointerface to a different type of peripheral, configurethe SP/MIC jack function:1 Press [MNU] to enter Menu mode.2 Turn the Tuning control or press [ ]/ [ ] to selectMenu No. 9 (SP/MIC JACK).3 Press [ ] or [MNU].4 Turn the Tuning control or press [ ]/ [ ] to selectthe appropriate peripheral type from “SP/MIC”(default), “TNC”, and “PC”.CIM/PSnoitcnuF epyTlarehpirePCIM/PS,tesdaeh,enohorcimrekaepShcleuqsatuohtiwCNT,enohpraetroppussutatsCNT troppussutatshcleuqsahtiwCNTCP lortnoclennahcyromemehthtiwCPreviecsnartehtroferawtfos5 Press [ ] or [MNU] to store the setting.Otherwise, press [ ] or [PTT] to cancel.• If necessary, configure and select theadditional settings.6 Press [ ] (POWER) to turn the transceiver OFF.7 Connect a peripheral to the SP/MIC jack.8 Press [ ] (POWER) to turn the transceiver ON.n SP/MICIf you plug the speaker microphone or headsetinto the SP/MIC jack, access Menu No. 9 andselect “SP/MIC” (default). To emulate theprogrammable function keys using external keysin order to control the transceiver, refer to thecircuit diagram below {page 38}.3.5 V 10 μFPTTLOCK SWSW-1 3.9kSW-2 10kSW-3 27kTH-F6A/ TH-F7ESPMICNote 1:Voltage is developed across a 100Ω resistor on the 3.5 V line inthe transceiver. When 2 mA flows, approximately 3.3 V isdeveloped.Note 2:A 10 μF capacitor is not required in the following cases.•When other equipment has DC blocking capacitors.•When a 2-terminal electret condenser microphone is used.n TNCIf you want to utilize the squelch status on yourTNC, access Menu No. 9 and select “TNC”. Fromthe TNC, make the interface cable that connectsto SP/PRD, MIC/PKD, PTT, REM/SQ, and GNDon the transceiver SP/MIC jack terminal. Inaddition, if your TNC supports 9600 bps packet(G3RUH/ GMSK 9600 bps modem), access MenuNo. 28 (PACKET) and select “9600” bps. Thisoption allows you to transmit/ receive packetsignals in a direct FM modulation/ quadraturedetector output. You must use the A-band totransmit and receive 9600 bps packet signal.The following diagram shows the availableterminals on the SP/MIC jack for the TNC.To TNC RXaudio inputTo TNCDCD inputGNDNCTo TNC TXaudio outputPTTDemodulator outputModulation inputSpeaker outputRemote inputSquelch outputMicrophone inputPTT input3.5 V DCHigh speed(9600 bps)High speed(9600 bps)Normal(1200 bps)Normal(1200 bps)SP/PRDREM/SQGND3.5 VMIC/PKDPTTNote:uWhen you select 9600 bps for Menu No. 28 (PACKET), youcannot monitor the sound from the speaker. Select 1200 bpsfor Menu No. 28 (PACKET) when you return to normaloperation.uWhile the VOX function is turned ON, Menu No. 28(PACKET) returns to 1200 bps {page 41}.2.5 mmPlug3.5 mmPlugSpeakerMicrophone3.5 mmPlug2.5 mmPlugNote 1 Note 2