TR-7930_TR-7950_user_K3ZAA.pdf

00 c, S.S.- NTRODUCTON arhev or of our latest product, the new TR795O (or TR793O) transcewer Please read this ucimar ua ca efully before plamng your transceiver in service. The unit has been carefully engineered rr - rtu edrig d quality standards, and should give you saosfactory and dependable operaOon for ca A TER FPAC NG Shrgco ta er yes r p k g i he event your unit needs to be transported for remote operation, mainten arce o S v Sfvg x it defn mis apply in this manual cfs ga ded, mconvnence only, no nsk of equipment damage or personal mjury. Corqu ome t damage nay occur but not personal injury. ONTENST 12Mobile Installati n general6 13 Fixed Sta ion Ins allation7 14Mer ory ack up thum Battery8 SECTION 2. CONTW S AND TERMINALS 2.rortPaie9 22 RearParel11 SE TION3 OPE ATON 3 1BEFORE OPERA ION12 32 SQUE CH12 33 MEMORY NP12 34 C ANGIN MEMOPYFREQUENCIES. . 12 35 SCA4 PERATON12 36 SCANST P.13 37 SCAN LO OUT OPERATION.13 8PR OR TV HAJNL SELECT13 39 PRIOR TYOPER SWITCH.13 3,djTOr * CrPEqATION.13 3.1TIVEROP RATEDSCAN13 12 AUTOPATCH SIDETONE ANDBEEP RLEVELADJUSTMENT,13 3 P I EDCH NJELS.14 314 TU79( P1 )INSTALLATION.14 ECTION 4 A D tONAL INFORMATION15 SEC ION0 TIO A A CESSORIES.16 EM.17, 18 CIM lCDM19 KAGRW.20 ACCESSORIES Carefully unpack yourTR-7950 (or TR-7930) and check that it issupplied withthe following accessories. (1)Dynamic microphone (with U/D switch) (T9i-03i3-05).1piece (2)Mounting Bracket Mounting parts: Hex wrench (wOI-0401-04)Ipiece Nuts (5 mm diameter) (Ni 4-0510-04).4 pieces Hex-socket screw (N09-0008-04).4pieces Flat washers(6 mmdiameter) (Ni 5-1060-46).,.4 pieces Spring washer (6 mm diameter) (NI 6-0060-46).4 pieces (3) Foot Rubber foot (small, rear) (J02-0069-05).2 pieces Rubber foot (large, front) (J02-0070-05).2 pieces Screw (N30-3006-41 ).4 pieces (4)DC power cord (with 2P plug and fuse) TR-7950(E30-1 685-05)1 TR7930(E30-1 674-05). .1piece (5)Spare fuse TR-7950(i OA) (F05-i 031-05),.,. 1piece TR-/930(8A)(F05-8021 -05). 1 piece (7)Miniature plug (for external speaker) (Ei2-000i -1 5) .1piece (9)Warranty card. 1 copy (10) Instruction manual .1copy FEATURES TR-7950 FEATURES 21NEW, multi-function memory channels Chaise of 45 or 25 watts output The TR-7950 provides a hefty45wattsoutput,while the TR-7930 features a more modest 25 watts. A HI! LOW power switch allows power reductior toapprox. 5 watts(adjustable). Long-life lithium battery memory back-up Built-in lithium battery has an estimated 5 year life. Automatic offset The microprocessor is pre-programmed for simplexor _600 kHz offset, in accordance with the ARRL 2 meter band plan. OS key allows manual offset change. Programmable priority alert The PR1ORITY channel may be programmed as any one of the 21 memories, with the ALERT switch ON, a dual beep sounds when a signal is presenton the PRIORITY channel. The OPER switch allows and in- stant move to the PRIORITY channel. Programmble memory scan lock-out LO key for programming the scan to skip selected nemory channels, without erasing the memory. The lower limit maybe programmed into memory A and the upper limit into memory B. Center stop during band-scan, withindicator Stops on a channel center during band-scan, with center tuningindicator. Scan resume selectable Scanstopson busy channel. Selectable automatic time resume-scan(approx. 5 sec., adjustable), or carrier oper- ated resume-scan. a scan delay after carrier-drop of ap- prox. 1.5seconds is built-in. Programmable sub-tone channels Optional TU-79 three frequency sub-tone unit provides keyboard selectable sub-tone channels, which may be stored in memory. Built-in1 6-key autopatch. with adjustable monitor The keyboard functions as a 16-key autopatch during transmitDTMF tones appearin the speaker output when a key is pressed during transmit. Front panel keyboard control Used for selecting frequent panel keyboard control. Optional accessories: TU-79 three frequency diode programmable tone unit. KPS-1 2 fixed-station power supplyfor TR-7950. KPS-7A fixed-station power supplyfor TR-793O. SP-40 compact mobile speaker. 9)biO3 - .aasa,a, a* nfl,aSen BEFORE USE rstFOE conneclon, check polanty 1W 2i Donotinstall near heater outlet After parkwg in he sur, orifinside tempe ature s0 coo this urt BEFORE ransm tt g Thisunit is designed for 1 2V negatwe ground ONLY. Keep equipment away from heat and out ofdirectsunight. STOP Donot adjust coil, trimmers or pots! These are factoryad justments. 4 SPECIFICATIONS . . . . . GeneraU Max. 9.5A in Ht transmit mode (TR7950) Transmitter Receiver Circuitry.Double superheterodyne Intermediate frequency1st10.695 MHz 2nd455 kHz Receiver sensitivityBetter than 30 dB for 0.5pVSNIN Better than 12 dB for 0.25 pV SINAD Receiver selectivityMore than1 2 kHz (6 dB) Less than24 kHz (60 dB Spuriour responseBetter than70 dB Squelch sensitivityLess than0.16 pV (threshold) Auto scan stop levelLess than0.2 1zV (threshold) Audio oui.putMore than 2.0 watts across 8 ohms load (5% dist,) Note: Circuit and ratings are subject to change without notice due to developments in technology. TR795O/793O5 SECTION 1 INSTALLATION 11. Interconnection Connect the antenna and power supply as shown in Fg 1 -1 for fixed station. 12. MOBILE nstaUation, genera 6 r I Un e drtvers seatUnderstde of dashboard Stdeo coso JLt Drifi holes tn the bottom of dashboard Secure the mounttrtg bracket wtth nuts, and bolts The transceiver should be acated fromyourk ieee, Hoof tOp tistallatton Front fender t,uttermoo it Trunk mount Bee re oSr.ony.,mobtie arterna Ltft he trtrr plate and nstafl the cab e 50 0ffvailR735OorTFJ93O ate 12 Mobil Ope anotns allationCtyfterrv at Yagi antennas IARRAY) To, ! Ground plane Coaxal cable+ Rotor Transceiver performance depends largely on the type of antenna / Roter Control cable Fig. 1 -3 Fixed Station Operation Installation TR-7950. fflfl or TR-7930 Antenna select j2 SWR meterswitch Yag antenna Ground plane antenna It is convenient to install both Yagi and ground plane antennas for selectable use. 14. MEMORY BACK-UP LITHRJM BATTERY A lithium battery is contained in the transceiver to retain memory. Therefore, turning off the POWER switch, dis- connecting the power cable, or a power failure will not clear the memory. The battery will last approximately five years.When the battery discharges and erroneous display may appear on the LCD. Lithium battery replacement should be performed by an authorized Kenwood service facility - either your Kenwood dealer, or the factory. Note:-_ When the lithium battery is replaced, the microprocessor must be reset.Press the microswitch accessible through the opening on the bottom cover, as shown. Fig. 1-4 Microprocessor reset 8ini9 U SECTION2 CONTROLS AND TERMINALS 2-1, Front Pane! (ijVOL/POWER Power ON-OFF switch and volume control are combined. Turning the control fully counterclockwise will turn the power OFF. Clockwise rotation will increases the volume. SQUELCH The squelch control is used to eliminate noise during no- signal time, Normally, this control is adjusted clockwise until the noise disappears and the Center Tuning indicator goes off (threshold level). For scan operation, this control must be set to the threshold point. LCD and IndicatorGroup ri riiii I ri i rrrriH1Tjr _MHz I- REVC. TUNING PRIO -_ 13 579 a)TX shift indicators: EJBy pressing thekey on the keyboard, theindica- tor will light in sequence to show transmit frequency is switched down 600 KHz from the receive frequency. By pressing thekey on the keyboard, the E indica- torwill light in sequence to show the transceiver is operating in the simplex mode. EJBy pressing thekey on the keyboard, theJindica- tor will light in sequence to show transmit frequency is switched up 600 KHz from the receive frequency. b) LiJ indicator: By pressing the TONE pushbutton the four digit frequency display changes to show which of three preset subaudible frequency channels is selected. iJ does not display at FO (no tone). TU-79 option required. c)1 indicator lightswhen scan operation is in pro- gress. d) This section displays either frequency in four digit (146.520 MHz is displayed as6.520 ), or one of four subtone conditions (Fl -3, or 0, no tone). TR795O/793O9 g) I ns ED ndicato g ts wher ftc REV swtch is ON lhndc,atese ra ce e has stoppel at ciarnel center )T s LED nd at s he PRIORITY OPER swcc ON S/RI emete s LEDlTie erndcates relative rece e rput sgn stre igt or ansmt RF output 4Keyboa d BEE ERIOr E EDBACK heumbor keys u cton as autopatcl keys 5ON AIR Inthcator This hght emitting diode (L E D,) will hght during transmit n ode 6MORY Channel Selecto ThsWah susedto select one of 21 merr orj c a iels Of hose, channels 1 1 5 store frequeices includir g - 600 kHz offset, Channels, 1617and1819 are pairedfor DD-SPLlTope ationChannelA ftores the pro- g ammed scailow frequency limrt, and channel B stores he hgh frequency mit. 7MIC Connector (6 pm) or conrecton of the supplied mcroplone (or and MC 46 autopatch mcrophone). 8 REVS vtch swach is used to reve se the repeater shift ( 600 Pz) anc othe transTiit/ecevc f equencies (CH 1 6 - 1 7 8-19) ONE switch Prcss ths switch to desgnte the tone preset frequency cianrcl alorg wi l theLokeys. (TU 79 optior re ured for ope a o ority channel. By de- aency is switched to LED lights to show HIGH/LOW switch SCAN switch PRIORITY ALERT SwItch keyboard operation; mory channel opera- 2-2 Rear Panel minal. Q)DCPower Term inal DCpower input terminal Connect the supplied power cord withplug. Input voltageis1 3.8V DC. Observe plus(+)and minus(-) polarityl EXT. SPTerminal External speaker terminal Connect a41 6ohmspeaker using the supplied plug. UP/DWN Switches j PTT Switch Press-to-talk switch used for transmission, This will also release scan operation. TR-79or7q() 11 SECTION 3 OPERATION 3-1 BEFORE OPERATION For frequencies outside the 144.000 - 148.000 MHz, the transceiver operates only in the simplex mode. 3-2 SQUELCH 3.3 MEMORY INPUT Example: Storing 144.650 MHz with +600 kHz shift and subaudible tone 1 in memory channel 5, 3-4 CHANGING MEMORY FREQUENCIES If you wish to change any memory frequency, store a new frequency in that channel using the precious procedure. The old frequency is erased when the new frequency is stored. 3-5 SCAN OPERATION The SCAN operation is divided into keyboard scan, me- mory scan and priority channel scan. For SCAN operation, the squelch control should be advanced to the threshold point. See section 3-2 Squelch. First, select either timer operated hold (TO) carrier (signal) operated hold (CO) with the SCAN switch. MEMORY SCAN from the keyboard 1.Set the SELECT switch to M. CH. 2. Press the 1J key to initiate scanning. The scan will beigin from the displayed channel ad- vancing, toward the higher numbered channels. During this operation, holding the microphone DWN switch changes scan direction backward. Releasing the DWN switch returns scan direction forward. Holding the UP switch permits accelerated scanning. 12TR79O/793O 3-6 SCAN STOP 3-7 SCAN LOCKOUT OPERATION 3-8 PRORITV CHANNEL SELECT Any one of the 21 memory channels can be selected as the priority channel. 1.Set the SELECT switch to M. CH. 2. Press the PRIORITY-ALERT switch in. 3. Select the memory to be the priority channel. 4. Press thekey to enter this instruction. The scan timer is factory preset at approximately 5 se- conds. This can be adjusted from 2 to 6 seconds. 1.Place the SCAN switch to TO. 2. Turn the SQL control fully counterclockwise to open the squelch. 3.Place the SELECT switch to M. CH. 4. Initiate scan by pressing thekey. 5.Adjust VR1 (X53-1280-1O) to the desired delay. (see Botton Biew on page 14. 3-12AUTOPATCH SIDETONEAND BEEPER LEVEL ADJUSTMENT TR795O/793O 1 3 3-13 PAIRED CHANNELS _li1 0 E!I U 0 H IX55-1330-1O U WJ L3 ra TU79unit installation Top View 3-14 TUJ9 (OPTION) INSTALLATION 14 TR795O/793O 9 H Bottom View TU-79 SECTION 4 ADDITIONAL INFORMATION 41 General Information 42 How the TX Final Module are Protected 44 Ordering Spare Parts 4-5Service Finalmodule protection is provided by sampling the re flected power. As the reflected power is increased (higher SWR) transmitter drive is reduced, thus decreasing input to the final module. This in turn reduces collector loss, protecting the final transistor. 4-3 Battery Precaution When chargingyour vehiclebattery,orwhen jump- starting a dead battery, ALWAYS disconnect the power cable from the back of the transceiver, TR795O/793OI5 SECTION5 OPTIONAL ACCESSORIES The following accessoriesare available for more sophisti cated operationof your transceiver. 5i Fixed Station DC Power SupplyKPS1 2A The KPS1 2 DC power supplymatches both the TR-7950 and TR793Owhilethe KPS7A matchesthe TR793O. 52 SP4O External Speaker Designes primarily for mobile operation. Stylingand tone quality match ytour tranceiver. 53TU79Tone Unit SP-40 16TR795O/793O MEMO c 17