Instruction/ maintenance manual of the product TS-480 Kenwood
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2 Preface This in-depth manual for the TS-480 was wr itten by the engineers who actually planned and designed the product. It is our hope that this guide will se rve to convey the joys of HF and all t.
3 Design Objectives Determination to create a unique transceiver The concept of a compact HF transceiver first sa w the light of day with Kenwood’ s TS-50. From then on, such equipment has beco me an essential part of the Am ateur Radio world. Equipm ent has now evolved with the appe arance of mu lti-band models.
4 Standalone contr ol panel For mobile operations, a separate c ontro l panel is ideal, but what if the transce iv er is also to be used as a base station? This wa s the pr oblem we faced.
5 Adding appeal to fixed station operations It is now increasingly common t o see a PC sitting beside the transceiver in the shack, but we wanted to expand the interaction be tween comput ers and transceivers. It was with this in mind that Kenwood came up with the idea of an Inter net remote-controll ed transceiver .
6 Development Objectives for the TS-480 Series The following is an explanation of our development obj ectives, distinct from the planning objectives. If asked about the origins of the compact HF rig, peop le outsi de Japan would no doubt think of the Atlas Series.
7 Focusing on HF Raising power output a nd adding an antenna tuner ar e both mo ves in the right direction, but limiting the transceiver to t he HF bands when the mainstream nowadays is HF~V/UHF would seem to be going against the tide of the times. Y et opting for the multi-band route inev itably leads to larger dimensions and hi gher prices.
8 Circuitry ● TX circuits 200W final section Explained here is the circuitry fo r the 200W f inal section, the crown je wel of th e TS-480 Series. This circuit is responsible for developing 2 00W output with a DC 13.8V power supply . Of course, various approaches are possible.
9 Fig. 1 illustrates TX IM char acteristics with 200W output at 14M Hz, while t he second graph (Fig. 2) charts high-frequency spurious emissions. Fig.
10 SPS (separate power sour ces) [ T S-480HX only ] SPS is shorthand for “operating at 200W using two 100W 13.8V power so urces.” T o generate a 200W output from 13.8V requires a maximum (total) current of 41A. As prev iously explained, the TS-480HX employs a pair of 100W final amps.
11 Failsafe device (some TS -480HX versions only) The use of two power supplies a nd t wo final amps in parallel is something that has not been tried before, and naturally there may be som e anxiety on the part of the user regarding what would happen if just one of the power supplies suddenly fa iled .
12 Fig. 4: 200W final section Fig. 5: 100W final section wi th antenna tuner.
13 FM circuit There were two approaches used for the FM c ircuit of the conventional all-mode transceiver . Either there was a dedicated modulati on circuit using a 10.
14 ● RX circuitr y Front end As explained in the section on de velopment objectives, what dist in guishes the TS-480 Series are incomparable features and perfo rmance t hat result from our focu s on HF .
15 How well does it actual ly perform? Fig. 8 is a graph illustr at ing the dynamic range char acteristics when changing the separation of tw o interf ering signals. For the sake of reference, res ults for the TS-480 are plotted against th os e obtained using ot her c ompact mobile transceivers (on the market) under the same c onditions.
16 filter – r eflects a dif ference in the manuf acturers ’ approach to des ign from the antenna to the 1st mixer . It is not just the mi xer that deter mines the characteristics of the front end: all of the components between the antenna te rminal and the mi xer can have an impact.
17 Jumpers for joy As with the TS-2000, something spec ial has b een provided for both the BPF A TT in the BC band and the regular A TT : The BPF has been equipped with an A TT in order to cope wi th powerful loca l broadcasting stations in the BC band.
18 Circuitry after the roofing filter Except for FM, the TS-480 has a double super: 1st IF is 73.095MHz and the 2nd IF is 10.695MHz. For FM, there is also a triple su per as low as 455k Hz. This is fo llowed by analog detection and signal processing performed by the AF DSP in a st andard arrangement.
19 Whereas the TS-570 provided only a single s lot for installing an optional filter , the TS-480 has two slots, meaning that t wo of the three filters can be inst alled at the same time.
20 Auxiliary Features In addition to the basic TX/RX circuitry already de scr ibed, the TS-480 is eq uipped with a number of auxiliary features of consider able practical benef it.
21 TX tuning is a handy feature to have. It outputs a low-p ower continuous carrier for a djusting a screw-drive or similar antenna. It allows y ou to tr ansmit a continuous carr ier that is independent of the mode and powe r of your current oper ations.
22 Features of the Built-in DSP ● DSP circ uit The digital signal proc essor equipped on the TS-480 is the 16-b it fixed-point TMS320VC5402 from T exas Instruments, which offers excellent value for the money .
23 First, the input signal is d ivided into its low- and high-frequenc y componen ts. Ignition and other pulse noise tends to be concentra ted in the latter , from which amplitude var iation is output. The attenuation coefficient derived from this signal is multiplied by the input s ignal.
24 Fig. 15: NR OFF Fig. 16: NR1 ON Fig. 17: NR2 ON.
25 ● Beat cancel Beat cancel (BC), as its name imp lies, is designed to cancel unpl easant beat interference. Like NR1, it uses adaptive filter technology , tracking a beat and canceling it by shaping. It is very similar to a band elimination filter .
26 Interference Interference T arget si gnal Interference Interference T arget si gnal L o w - c u t Hi-cut Fig. 20: Slope tune in action ● RX DSP filters In SSB, AM and FM mode s, you can independent ly set high- and low-cut frequencies for the AF filters to suit oper ating conditions (slope tune).
27 Listed below are the f ilter bandwi dths (unit: Hz) that can be chos en; default values are shown in bold. CW WIDTH 50 80 100 200 300 400 500 600 1000 2000 FSK WIDTH 250 500 1000 1500 When the optional CW filter s are installed, the TS-4 80 will automatic ally select the optimum IF filter in accord ance with t he DSP filter bandwidth.
28 ● RX equalizer & TX equalizer If you use the RX equalizer it is ea sy to adjust RX audio qu ality . T ake your pick from flat (default), high boost, Formant pass, bass boos t, and conventional sett ings. As a new feature, the TS-480 actually offers two types of high boost and two types of bass boost.
29 Ti p s As with other Kenwood HF tr ansce ivers, the TS-480 provides menu access to its many features. By selecting and adjust ing these f eatures, you can customize the TS-4 80 so that it fits perfectly into your way of operat ing a radio. Intr oduced here are tips on how to get the most out of the various items listed in the menus.
30 12 Beep output level Y ou c an adjust this to suit your preference. 13 Sidetone volume For full break-in, it is easier to hear the sidetone if you raise this volume. 14 VGS- 1 message playback volume Y ou c an check what has been recorded. 15 VGS-1 announcement volume Switch this OFF if you do not need announcements while working the radio.
31 25 TX hold when in ternal A T completes tuning After completion of tuning, there is still approximately 10W of output, so this is useful if you want to go on to tune the linear amp. 26 In-lin e A T while receiving The internal antenna tuner can also be used during RX.
32 33 Key ing priority over playback Without switching off the repeat playback for message s, you can start keying. 34 CW RX pitch / TX s idetone frequency Select RX pitch frequency between 400Hz and 1000Hz. At the same time, sidetone frequency changes with the pitch frequency .
33 48 Assign PF keys on the control panel Y ou can assign functions to the PF keys on the control panel as detailed in the separate table. 49 Mic PF1 key 50 Mic PF2 key 51 Mic PF3 key PF keys 52 Mic PF4 key Y ou can assign functions to the PF keys on a multifunctio n mic as det ailed in the separate table.
34 ● Functions that can be as signed to PF keys # Assigned function Use 0 ～ 60 MENU #00 ～ 60 The selected menu it em can be ca lled up directly , making this useful for menu f unctions that you often use. 61 V oice1 In addition to the automatic V oice Guide, y ou can have frequency and other displayed da ta read out when y ou press a PF key .
35 71 TF-SET 72 Q MR 73 Q MI 74 SPLIT 75 A/B 76 M/V 77 A=B 78 SCAN 79 M >V 80 M.IN 81 CW TUNE 82 CH1 83 CH2 84 CH3 85 FINE 86 CLR 87 MTR 88 MHz 89 ANT 1/2 90 NB 91 NR 92 BC 93 DNL Y ou can assign a function you o ften use to a PF key on the mic. Also, a function defined by pressing the key for 1 second can be called up instantly .
36 ● Making menus easier to use Menu switching There are so many different menu selections and parameter s to choose from that it is impossible to remember them all. Cons equently , the menu system can be a little inconvenient when you need to change several settings at once.
37 Structural Features ● Internal structure of the main unit The internal structur e of the main unit is straightforward: employing a die-cast aluminum chassis, it is designed so that the circuit boards are attached from both a bov e and below .
38 ● Cooling In developing the TS-480HX, the mo st important issue w hen it came to structur al design was how to arrange for sufficient cooling. In order for this transceiver to be capable of 200W .
39 The TS-480HX is equipped with 4 fi nal trans istors (2 in the case of the SA T model), and the heat produced by these disperses through t he die-cast aluminum chassis. In or der to ef ficiently transfer this heat outside the trans ceiver , cooling fins are absolutely esse ntial.
40 Now let’s have a look at the rise in t emperature of the different parts when the T S-480HX transmits continuously (14MHz) for 30 m inu tes at 200W . T o provide a comp arison, plotted on the same graph is test data compiled fo r a compact 100W model (designed so as not to power-down during continuous transmiss ion at 100W).
41 Fig. 32: T emperature rise measur ed at ce nter of the upper case of the main unit As you will appreciate from thes e results, despite the fact that the TS-480HX has an output of 200W, twice that of the compar ison model, it boasts the same or even better coolin g performance.
42 ● Standal one control panel In the compact size range, virtually all transce ivers ar e designed so the control panel can be removed and replaced. While this is convenient, owing to the small dimensions of the main unit, the area of the front pane l is n ecessarily limited.
43 New Option: V oice Guide & Storage Unit (VGS-1) Developed at the same time as the T S-480, the VGS-1 can be installed as an option. Combining in one unit the functions of the voice synthesizer unit (VS-3) an d the digital rec ording unit (DRU-3A) previously offered by Kenwood, th e VGS-1 goes beyond both of these.
44 ● V oice Guide Kenwood’ s V oice Guide funct ion is not the same as the basic versio ns fitted in some transceivers merely to announce the frequency .
45 6. VFO mode, direct frequency entry Let us say you are operating at 7.033M Hz and in VFO mode yo u press the PF key , t he V oic e Guide will announce “VFO”, “A” or “B”, and 7.
46 New Option: ARCP-480 (Amateur Radio Control Program for TS-480) Freeware Kenwood’ s ARCP software has proven very popular . For the TS-480 we have made some significant improv em ents, releasing it as “ARCP-480”.
47 2. Changing memory a nd register ed details Y ou can change any regist ration data from the appropriate window . Y ou use this window when storing new data in memor y . Display the frequency you wish to r egister and press M.IN. Then pick the channel (0-89) you want to write to and press DISP: the memory window (right) will open.
48 4. Reading and writing files With ARCP-480 you can write memor y channel and menu data to a file for late r recall. This does not apply in certain cases when using KNS.
49 When the system is operating, RX audio and the command s that c ontrol ARCP are sent from the host PC, along with the TX audio and commands cont r olling the transceiver .
50 communications and the operating system on either end is compatible , check t he V oic e box. (It is possible to enter t he description using double-byte characters. For the address, it is also possible to ent er the domain name, provided that it can be resolved by DNS.
51 Using a broa dband router Many people using the Internet today use a broadband router (her eafter referred to simply as a router), but in order to use KNS in a setup that has routers inst a lled at both the host and remote ends, you need to config ure each end s eparately .
52 New Option: ARHP-10 (Amateur Radio Host Program) Freewar e ARHP-10 is the host application for use with the Kenwood Network Command System. As was explained in the section on ARCP-480, if ARHP-10 is installed on the host computer it c an serve as the host in a KNS connection.
53 3. Adjust PC volume Whether hosting via a W AN or with in a LAN, it is recommend ed that you test your setup at least once using a KNS environment a rranged with host and remot e on the same LAN. This s hould allow you to adjust volume to the appropriate level.
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55 ● T roubleshooting Listed below are typical pr oblems that you might encounter . Network & Operations Problem Solution Is it possible to use an analog dial-up connection? We recommend a broadband co nnection.
56 I cannot get KNS to work over the Internet connection that is provided as a collective service to my apartment block. It is possible that one of more of the ports requ ired by KNS is blocked. T alk to your netwo rk administrator to see if the requisite ports can be opened.
57 Sound Problem Solution The sound does not get through (host PC). First check that the audio ca ble is connected proper ly . Check what audio input method (MIC/EXP-SP or DA T A) has been selected for the transceiver . • If the DA T A terminal is used: Use menus #46 & #47 to ch eck that I/O levels are correct.
58 Check that the computer can pr oduce sound; update drivers as necessary . Connect a microphone to t he computer and bring up the recording control wind ow . Check that the input terminal you are using is acti v e and that it is set to an appropriat e level.
TS-480 In-Depth Manual Published in April 2004 by Kenwood Corporation Communications Equipment Division Unauthorized reproduction is forbidden. Copyright © 2004 KENWOOD CORPORA TION.
An important point after buying a device Kenwood TS-480 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Kenwood TS-480 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Kenwood TS-480 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Kenwood TS-480 you will learn all the available features of the product, as well as information on its operation. The information that you get Kenwood TS-480 will certainly help you make a decision on the purchase.
If you already are a holder of Kenwood TS-480, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Kenwood TS-480.
However, one of the most important roles played by the user manual is to help in solving problems with Kenwood TS-480. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Kenwood TS-480 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
