Kenwood TS-590S manual

Distinctive P erformance TS-590S HF/50 MHz ALL MODE TRANSCEIVER[...]

Cover 2 TS-590S This in-depth manual is intended to expla in the feat ures of the TS-590S and it s convenient use. We hope that this manual, as a gen eral HF transceiver guide will be of your benefit, to whoe ver reads this manual, whether you have al ready purchased a TS-590S, are thinking of purchasing of this product, or are interested in HF tra[...]

TS-590S I CONTENTS 1 RECEPTION ........... .......................... 1 1.1 Type of Conversion ..................... ....... 1 1.2 Down Conversion ... ......................... ... 3 1.3 Up Conversion......................... ........... 8 1.4 RX Auxiliary Circuits .................... ....... 9 2 TRANSMISSION ............................. 11 2.1 K[...]

CONTENTS II TS-590S 8.2.2 Controllin g TS-590S from a PC using the USB Connector ....................... ... 53 8.2.3 Controllin g TS-590S from a PC using the COM and ACC2 connectors (microphone and spea ker connecte d to the PC to be used) ........... ................ 53 8.2.4 Controllin g TS-590S from a PC using the USB connector (microphone and [...]

TS-590S CONTENTS I At the end of September , 2010, the TS -590S, a Kenwood HF band amate ur radio transceiver was launched af ter the 7-year lon g silence since the rele asing of TS-480S . As implied by this mode l name, TS-590S is the “legitimate successor to the TS-570S”. The product ca tegory taken over from the TS-570S by th e TS-590S was c[...]

II CONTENTS TS-590S TS-590S was planned as th e “legitimate successor t o the TS-570S” after 14 years or more of time have elap sed since the first market appe arance of TS-57 0S in 1996. TS-590 S is titled with the 500s model number wit h the TS-570S but, nee dless to say , we started the development as a t otally new transceiver . First, let?[...]

TS-590S CONTENTS 1 1 RECEPTION Receive performance is o ne of the key indicators th at is used to evaluate a transceiver . And, above all, the cap ability to protect agains t interference fr om adjacent signals close to the target signal is of the utmost importance. T o attain this goal, a circuit wi th a good large si gnal behavior characteristic [...]

1 RECEPTION 2 CONTENTS TS-590S Figure 1-1 Dual-m ode Conversion Freq uency Configuration First, let us begin with explanat ion about the up-con version p ath. In the up-conver sion p ath, double-hea ded arrows are shown at each st age pointi ng in both directions. This means a tra nsmit signal as well as a receive signal is processed in the u p- co[...]

1 RECEPTION TS-590S CONTENTS 3 Figure 1-2 Block diagram: Down Conversion Figure 1-2 describes th e circuit configurat ion ar ound the first mixer o f the down-conversion path, showing the relation ship s between frequencie s upon receipt of a 14 MHz si gnal. The signal from the antenn a passe s the RF BPF or LPF (as a receive LPF , it divides the f[...]

1 RECEPTION 4 CONTENTS TS-590S The receiver mixer circuit is a quad mixer consisting of fou r 2SK1740 JFET s. The mixer circuit achieves superio r characteristics th anks to the revision of I/O port matching and the optimizati on of biases. With the signal provide d by the first local oscillator , the RX sign al is converted to 1 1.374 MHz (first I[...]

1 RECEPTION TS-590S CONTENTS 5 • Durin g the transmi ssion: The up-conversion conf iguration is always u sed in all modes and bandwidths. During the transmission in SS B mode, the pa ss bandwid th is determ ined by the filter settin gs (digital filter of the DSP) selected in the menu mod e. The pass bandwidth of the filter in the analog stage is [...]

1 RECEPTION 6 CONTENTS TS-590S Following is a grap h that provid es the comparis on between the performances of roofing fil ters. Figure 1-5 Comp arison of Bandp ass Characteristics of MCFs Figure 1-5 comp ares the band p ass characteristi cs of a roofing filter of cent er frequency 73 MHz (gray line); and the roofin g filters of the center freque [...]

1 RECEPTION TS-590S CONTENTS 7 Measurement Conditions: The abscissa axis shows the distance from the int erfering signal. For exam ple, it represents that at the point of 10 kHz the rece ive frequenc y is 14.200 MHz and two interfer ing signals of 14 .210 MHz and 14.220 MHz are given. The orange line shows th e result of TS-590S and the gray line s[...]

1 RECEPTION 8 CONTENTS TS-590S Difference of characteristics due to th e pass bandwidth in the roofing filter can be vie wed in graphs in Figure 1-5 and Figure 1-6. So, le t’s se e the characte ristics of the up- conversion system in which the same front end configuration is used as previous mo dels. W e will explain usin g the measurement result[...]

1 RECEPTION TS-590S CONTENTS 9 T ypical built-in RX auxili ary circuit s include the va riable pass bandwidth circuit, notch filter and noise blanker (NB). In modern HF transceivers, most of these auxiliar y circuits (=auxiliary functions) are made possible by an arithmetic process of the DS P . As well as th e TS-590S, only t wo auxiliary circuit [...]

1 RECEPTION 10 CONTENTS TS-590S Following is a fig ure that represents the TX-RX UNIT th at has the circuitry configurat ion in question. By detach ing the lower case, you ca n access the jumpe r connectors CN101 th rough CN103. Figure 1-8 TX-RX UNIT 1) Raising sensitivity in the BC band: Remove the ju mper for CN103 and insert the ju mper into CN1[...]

TS-590S CONTENTS 11 2 TRANSMISSION The tradition of high quality audio technology that users rely on Kenwoo d to deliver is p roduced by combining ana log and digital technologies t hat Kenwood has nurtured thus far . The DSP controls modulation and determine s the sound qua lity and anal og circui ts con vey and amplify the signal cleanly . The fi[...]

2 TRANSMISSION 12 CONTENTS TS-590S Figure 2-1 T ransmit IMD Characteristics Figure 2-2 T ransmit Spurious Characteristics[...]

2 TRANSMISSION TS-590S CONTENTS 13 TS-590S has a built-in high-speed relay-c ontrolled anten na tuner that was first empl oyed in the TS-570S. In contrast to th e variable capacitor type anten na tuner , it employs a small and lig htweight relay to achieve a sufficient matc hing range and a fast tuning oper ation with digit al control. The control [...]

2 TRANSMISSION 14 CONTENTS TS-590S Figure 2-3 Timing chart (1 or 2) Figure 2-4 Timing chart (3) Menu N o. 53 or N o. 5 4 "1 or 2" 10 ms KEY RX RL Switch RF Power AF TX Menu N o. 53 or N o. 54 "3 " 25 ms Switch RF Power AF KEY RX RL TX[...]

2 TRANSMISSION TS-590S CONTENTS 15 TS-590S is equipped with a D R V terminal that fo rmer ly was provided only for high -end transceivers. The output level of th e DRV terminal is about 0 dBm (1 mW) and can be decrease d to around 1/ 20 depending on the setting of the transmit power . T o reduce the output le vel further , you can adjust the transm[...]

2 TRANSMISSION 16 CONTENTS TS-590S Figure 2-6 Output Characteristics of DRV T erminal at 14.175 MHz and -10 dBm Figure 2-7 Output Characteristics of DRV T erminal at 14.175 MHz and -20 dBm[...]

2 TRANSMISSION TS-590S CONTENTS 17 Figure 2-8 Output Characteristics of DR V T erminal at 136 kHz and 0 dBm Figure 2-9 Output Characteristics of DRV T erminal at 136 kHz and -10 dBm[...]

2 TRANSMISSION 18 CONTENTS TS-590S Figure 2-10 Output Characteristics of DRV T erminal at 136 kHz and -20 dBm[...]

TS-590S CONTENTS 19 3 LOCAL OSCILLA T OR In the first local osci llator , instead of the convention al PLL/VCO system, a 14-bit DDS (d irect digit al synthesizer) is adopted to provide the output sign al directly to the mixe r . During the down conversion, the oscillator fre quency is lower than that in up-conversion operation, and, theref ore, the[...]

20 CONTENTS TS-590S 4 DSP Figure 4-1 describes the DSP *1 of the TS-590S and peri pheral devices co nnected to the DSP including ADCs *2 and DACs *3 . Figure 4-1 TS-590S DS P and Peripheral Devices *1 DSP: digital signal processor *2 ADC: A/D converter *3 DAC: D/A converter The heart of the signal processin g function is a 32-bit floating point TMS[...]

4 DSP TS-590S CONTENTS 21 As for ADCs and DACs, the best combinati on of models are selected to suit the type of signal processed, especially f or the IF input sect ion, high-perform ance ADCs designed for high-end audio with dynamic ran ge of 1 14 dB are used. Both the ADCs and DACs have two analog inp ut/output channels per device and the DS P ha[...]

4 DSP 22 CONTENTS TS-590S Figure 4-3 Control Block Diagram of IF-AGC In the attack control circuit, in addition to th e normal fast gain shif t function, we have added a technology to cap ture the signal trans formation in an oversho ot form and to apply modera te gain to the signal in order to le ssen the audible clicks. As an exampl e, Figure 4-4[...]

4 DSP TS-590S CONTENTS 23 TS-590S also incorp orates rich and po werful interference el imination functions that work within the IF-AGC loop (Figure 4-3). The previous model (TS-2000S) already featured a digi tal IF filte r and the auto notch fi lter function, and in the TS-590S, a digit al noise blank er (NB2) and a manual notch filter functio n *[...]

4 DSP 24 CONTENTS TS-590S Figure 4-6 Result s of Amplitude and Frequen cy Analysis of the Digit al IF Filter (CW Mode) 0 Hz in the center that corr esponds to the pitch frequency The following table provides possible cho ices of the filters an d the default value (sh own in bold) for respective modes. 4.3.2 T ypes of Digit al IF Filters SSB Mode LO[...]

4 DSP TS-590S CONTENTS 25 The manual notch filter is a notch filter with a freq uency tha t can be shifted with the notch knob. Th e auto notch fil ter is a notch filter tha t automatical ly tracks a beat frequency with an adaptive filter technique. Bo th notch filter s have the atte nuation of more than 60 dB at the center fre quency . Figure 4-7 [...]

4 DSP 26 CONTENTS TS-590S There are two settings on the manual notch filter : Normal and Wide . Y ou can choose one of two bandwid ths for the notch filte r (Figure 4-8). For a simp le beat frequency , Normal is effective. If there is an interfering SSB signal, or in the event the t arget signal is al so trimmed by LO CUT/ HI CUT , a Wide setting o[...]

4 DSP TS-590S CONTENTS 27 For the demodulation of th e RX signal in SSB, CW , FSK an d SSB-DA T A mod es, we have employed the proven PSN (Phase Sh ift Network) design again. In the previo us models (TS-2000 S and TS-870S) , the selection of th e PSN’s characteristic s was interlocked with the passb and setting of the IF filt er , and when the p [...]

4 DSP 28 CONTENTS TS-590S Following is how the TX signal is processed. The audio signal capture d from the microphone or an external terminal is first pro cessed by the ban dwidth-l imiting filter , microphone gain control, speech processor or VOX, a nd then, in SSB and AM mo des, the signal is mo dulated and ou tput as an IF signal; in FM mode, a [...]

4 DSP TS-590S CONTENTS 29 Beat cancel (BC), as it s name implies, is d esigned to cancel unpleasant beat interference. Like NR1 (line enhancer), BC uses adaptive filter technology . With this technology BC tracks and cancels a beat signal just like sha ping a band eliminatio n filter . BC is especially effective when there are mu ltiple beats that [...]

4 DSP 30 CONTENTS TS-590S Figure 4-10 shows how BC cancels beat signals, as monitored by an FFT analyzer . Notice how multiple beat s are clearly removed by BC. There are two meth ods available for beat cancellati on: BC1 and BC2. BC1 is tuned to be effective against weak or continuou s beat interference, while BC2 ca ncels intermittent b eats such[...]

4 DSP TS-590S CONTENTS 31 Figure 4-1 1 NB2: Inactive Figure 4-12 NB2: Active However , depending on the nature of the pulse no ise, the noise blanke r cannot suppress the noise effe ctively . In such a case, by using other method s such as noise redu ction in conjun ction, the reception cond itions may be improved. There are two methods availa ble [...]

4 DSP 32 CONTENTS TS-590S Unlike the conv entional noise reduct ion methods, the spectral subtractio n method of NR1 is a brand new approach of no ise reduction de veloped for the TS-590S. NR1 estimates the noise compon ent and take s away (subtract s) the esti mated noise compo nent from the RX signal to make the ta rget signal emerge (Fig ure 4-1[...]

4 DSP TS-590S CONTENTS 33 Figure 4-14 NR1 (Spectral Subtraction Method) (Inactive) Figure 4-15 NR1 (Spectral Subtraction Method) (Active) Audio spectrum components swamped by noise Audio spectrum components extracted by NR[...]

4 DSP 34 CONTENTS TS-590S As a noise suppre ssion process, th e line enhan cer method based on a DSP has been ad opted by many amateu r radio transce ivers in recent years. This method autom atically adjusts the filter characteristics acc ording to the character istics of a RX signal to obt ain filter characteristics sui tabl e for passing periodic[...]

4 DSP TS-590S CONTENTS 35 NR2 is what is known as SP AC. It detects peri odic signals co ntai ned in the RX signal and pieces together the d etected perio dic signals to pr oduce output receive audio. As a result, onl y the periodic signals in the re ceive audio emer ge clearly . NR1 based on an NR1 line enh ancer is a filter in esse nce, but NR2 p[...]

4 DSP 36 CONTENTS TS-590S Figure 4-19 NR2: Active TS-590S also incorporate s an AF-type sp eech processor . Thou gh it is an AF type, th e speech processor provides sufficient compression through a unique sig nal processing technique. A typical voice sign al tends to have th e highest amp litude in the low freq uency range with smalle r amplitude a[...]

4 DSP TS-590S CONTENTS 37 Figure 4-20 show s how the wavefo rm changes when the sp eech processor is to ggled betwee n active and inacti ve. Y ou ca n see that wh en the speech proce ssor is activated , the differences in amplitud e are averaged and the talk power is increased. The speech pr ocessor has two settings: HARD an d SOFT . HARD is a sett[...]

38 CONTENTS TS-590S 5 SOFTW ARE: ENHANCING OPERA TING PLEASURE In addition to t he features we have explained thus far , the TS-590S come s wi th extensive functions to make your operatio n more pleasant . We will guide you through some of them. We have modified data-mode related settings to meet many d ifferent needs. Figure 5-1 Front Panel of the[...]

5 SOFTW ARE: ENHANCING OPERA TING PLEASURE TS-590S CONTENTS 39 Also, in data modes, the specificat ion of the receive DSP filt er is automatically switched from LO CUT/HI CUT to WIDTH/SHIFT , allo wing fo r operations with no n-vo ice modulation types su ch as RTTY an d PSK31. Therefore, the IF DSP filter can be adjusted to as narrow as 50 Hz in SS[...]

5 SOFTW ARE: ENHANCIN G OPERA TING PLEASURE 40 CONTENTS TS-590S Figure 5-2 DRV and RX ANT Connectors Operation in the 135 kHz Band Since the T echnical Regulations Conformi ty Certification of the transceiv er is invalid for operatio n in the 135 kHz band, yo u need to make a sepa rate application for certification to work this band. • Higher-lev[...]

5 SOFTW ARE: ENHANCING OPERA TING PLEASURE TS-590S CONTENTS 41 Just like the TS-480 S, TS-590S employs dou ble fu nction keys to activate diff erent functio ns by holding do wn a key . This is meant to make operatio n easier than in the system requirin g one to push a function key first before hitting another key to in voke the desired fu nction. S[...]

5 SOFTW ARE: ENHANCIN G OPERA TING PLEASURE 42 CONTENTS TS-590S The TS-590S come s with a quick memory function as did with the previous t ransceivers. The number of cha nnels is a maximum of 5 as default, b ut you can in crease the numb er up to 10 by setting in the menu mode. Con versely , if you w ish to decrease the number of channels to make t[...]

5 SOFTW ARE: ENHANCING OPERA TING PLEASURE TS-590S CONTENTS 43 Though only t wo PF keys are availabl e on the transceive r , it is possi ble to increa se the number of th e PF keys by using a sw itch to switch a voltage derived from th e microphone con nector . If you have a m icrophone equipped with the PF keys such as MC-47 (alt hough it was disc[...]

5 SOFTW ARE: ENHANCIN G OPERA TING PLEASURE 44 CONTENTS TS-590S The optional VGS-1 voice guide and storag e unit can be installed on the transceiver . The voice guide and audio recordi ng function that are a cclaimed by sig ht-imp aired operators become availabl e. The following are the de tail s of the VGS-1 and new functi ons added for the curre [...]

5 SOFTW ARE: ENHANCING OPERA TING PLEASURE TS-590S CONTENTS 45 On the rear panel of the TS-590S, projectio ns are placed near some connectors. Figure 5-8 Projections on the Rear Panel We ha ve provided these gu ides to meet the demands from sigh t-impai red operators wh o wish to set up the transceiver without help fr om someone else. If two identi[...]

46 CONTENTS TS-590S 6 APPEARANCE DESIGN: “DESIGN CONCEPT” REVEALED BY DESIGNING ENGINEER The design development of the TS-590S was st arted by asking myself “What are the characteristics that make Kenwood’s HF transceivers just what they are?” Among the key words adopted to describe the characteristics were “inn ovativeness”, “high [...]

TS-590S CONTENTS 47 7 STRUCTURAL FEA TURES We have designed the ch assis of the TS-590S to endure heavy-du ty operation. The PCBs are placed as follows: FINAL UNIT on th e upper side of the chassis, TX-RX UNIT and LO UNIT on the lower side, CONTROL UNIT beneat h the LO UNIT , NB UNIT and DISPLA Y UNIT in front. We have placed two cooling f ans in t[...]

7 STRUCTURAL FEA T URES 48 CONTENTS TS-590S We have also paid much attention to the area and sh ape of the air inlets/outlets to lessen th e operation no ise of coolin g fan motors. T o reduce the noise from the air inle ts/outlets, the area and shape were examined through rep eated experiments and we ha ve finally succeeded in alleviating the cool[...]

7 STRUCTURAL FEA TURES TS-590S CONTENTS 49 Figure 7-5 Heat Sink Section We will provide the temperature data when a contin uous transmission is mad e at a 25°C or 77°F room temperat ure so that you can understand the TS-5 90S’s superb cooling capability . Figure 7-6 T emperature Data while T ransmitting Continuously As can be seen from the abov[...]

7 STRUCTURAL FEA T URES 50 CONTENTS TS-590S “We wanted to complete the d isplay without uneven brightness!” Tha t was our goal of desig ning the display screen, or the “face” of the transceiver . On the TS-5 90S, after repeated examinations a nd trials, we have fina lly reached ou r goal of a displ ay with perfectl y even brightn ess. The s[...]

7 STRUCTURAL FEA TURES TS-590S CONTENTS 51 We ha ve designed the main control knob locate d in the center of the fr ont pa nel, focusing on eas y handling and good appeara nce. For the encoder , a 250-pulse magnetic e ncoder is adopted, which e nables the pulses are multiplied by 4 using so ftware to produce 1,000 pulses pe r revolution so that a u[...]

52 CONTENTS TS-590S 8 EXP ANSIVE APPLICA TION SOFTW ARE This chapter describes the Wind ows related software to be used to control the TS-590S from a PC. Following are t he Windows related software products that can be used with the TS-590S. T able 8-1 Windows Related Soft ware for TS-590S We will provide some typical system con figurations using t[...]

8 EXP ANSIVE APPLICA TION SOFTW ARE TS-590S CONTENTS 53 The microphone conne cted to the TS-590S a nd the transceiver ’s built-in speaker are used. The microphone and sp eaker connected to a PC ar e used. The ACC2 connecto r is used for input/ output of the TS-590S’ s audio signal. Caution: T o use the ACC2 connector for input/output of the aud[...]

8 EXP ANSIVE APPLICA TION SOFTW ARE 54 CONTENTS TS-590S Caution: When the USB connector is used for inpu t/output of the audio si gnal on the hos t station, ARUA-10 is not required neither . ARCP-590 (Amateur Radio Control Pro gram for TS-590S) i s software ena bling control of the TS-5 90S from a PC. Figure 8-1 Main Wind ow of ARCP-590 ARCP-590 is[...]

8 EXP ANSIVE APPLICA TION SOFTW ARE TS-590S CONTENTS 55 The basic specificat ions of the ARCP-5 90 are inheri ted from ARCP-480 for the TS-480S. In addition, ARCP-590 confor ms to the new function s of the TS-590S. ARCP-590 supports Japanese and English user interface language s. A user can use ARCP-590 in the langua ge the user is the m ost famili[...]

8 EXP ANSIVE APPLICA TION SOFTW ARE 56 CONTENTS TS-590S The ARCP-590 has newly adopted a l isting by category in the me nu function. The new lis ting by category as well as the co nventional general listing a llows quick access to the desired function. Figure 8-3 Menu Functio n The ARCP-590 enables a user to set the d elay time fo r switching from [...]

8 EXP ANSIVE APPLICA TION SOFTW ARE TS-590S CONTENTS 57 In ARCP-590, the nu mber of connection de stinations that can be registered has been expanded from a maximum of 10 to 100. The ARCP-480 and ARHP-10 for t he TS-480S are su pplied w ith the V oIP function to send and receive voice over the network connec tion, but the V oIP engine is not compat[...]

8 EXP ANSIVE APPLICA TION SOFTW ARE 58 CONTENTS TS-590S ARCP-590 is capable of visually showing the locati on of the current RX frequency on the display and of shifti ng the current RX frequency to the center of the scan sp an. The scan cen ter frequency and the scan span can be sto red for each amateur ra dio band. It is id eal for checking the co[...]

8 EXP ANSIVE APPLICA TION SOFTW ARE TS-590S CONTENTS 59 ARHP-590 is the host application to control th e TS-590S with Kenw ood Network Command System (KNS). Figure 8-8 Main Wind ow of ARHP-590 ARHP-590 is avail able free an d can be downloa ded from Kenwood’ s website. URLs from which ARH P-590 can be downlo aded: http://www .ken wood.com/i/pr od[...]

8 EXP ANSIVE APPLICA TION SOFTW ARE 60 CONTENTS TS-590S ARHP-590 allows a use r to check the ope rating status of ARHP-590 and TS-5 90S even after minimized. Y ou can check the st atus of the power of th e TS-590S (P ower ON or Power OFF) and your connection an d transmission st atuses. Figure 8-9 Checking the Operating S t atus For details of Kenw[...]

8 EXP ANSIVE APPLICA TION SOFTW ARE TS-590S CONTENTS 61 If ARUA-10 and ARCP-590 ar e used in combin ation, you have on ly to connect the TS-59 0S and a PC with a single USB cab le to use the micr ophone and sp eaker connected to the PC in plac e of those on the trans ceiver . T o use ARCP-590 ov er a USB cable connection , the virtual COM port driv[...]

8 EXP ANSIVE APPLICA TION SOFTW ARE 62 CONTENTS TS-590S Figure 8-1 1 Device T ab In the “Reception Out put” of the T ra nsceiver frame, “Microphone (USB Audio CODE C)” must be selected. In the “Modulati on Input” of the T ransceiver frame, “S peaker (U SB Audio CODEC)” must be selected. In the “Microphon e” of the PC frame, sp e[...]

8 EXP ANSIVE APPLICA TION SOFTW ARE TS-590S CONTENTS 63 We ha ve released the AR VP-10H pr ogram that provides the V oIP function at the host stati on (to which TS-590S is conn ected) and the ARVP-10R program that p rovides the V oIP fun ction at the remote station (which contro ls the transceiver remotely). Figure 8-12 Main Window of ARVP-10H Figu[...]

8 EXP ANSIVE APPLICA TION SOFTW ARE 64 CONTENTS TS-590S ARVP-10H and ARVP-10R enable a voice signal to b e sent and received over LAN or the Internet. Configure the n ecessary settings to use ARVP-10H. Select “User Settings” from the File pulldown me nu and click the “Ad d...” button in the User Settings dialog box a nd the Setup User dialo[...]

8 EXP ANSIVE APPLICA TION SOFTW ARE TS-590S CONTENTS 65 Configure the n ecessary settings to use ARVP-10R. Select “AR VP-S10R Settings” from the File pulldown menu and click the “Add...” but ton in the ARVP-10R Settings dialog box and the Det ailed Settings dialog box will appear . In Det ailed Settings dialog box, you can set the conn ecti[...]

8 EXP ANSIVE APPLICA TION SOFTW ARE 66 CONTENTS TS-590S T o connect the TS-590S and a PC via a US B cable to cont rol TS-590S, the vi rtual COM port driver needs to be inst alled o n the PC. URLs from which virt ual COM port drive r can be downloa ded: http://www .kenwood.com/i/products/info/amateur/software_download.html If you connect the TS-590 [...]

TS-590S CONTENTS 67 9 OPTIONAL ACCESSOR Y PS-60 is a regulated DC p ower supply designed for am ateur transceivers. The power supply ad opts a switching module that accepts the input AC V oltage in the range from 90 V to 264 V . Though the power sup ply unit is comp act in size (W 173 .5 mm x H 95.5 mm x D 204.3 mm or W 6.83 inch x H 3.76 inch x D [...]

9 OPTIONAL ACCESSORY 68 CONTENTS TS-590S  Adopt s a PFC Circuit that does not Produc e Harmonics in an AC Rectifier Circuit A switching power su pply typically produces large ha r monics in the rectifier circuit by it s switching operation wh ich compromis es the phase factor an d may cause noise an d other disturb ances to external devices due [...]

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Revision 1.00 May 15, 201 1[...]