Kenwood 50 MHZ ALL MODE TRANSCEIVER TS-590S manuel d'utilisation

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

Cover 2 TS-590S This in-depth manual is intended to explain 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 whoever re ads this manual, whether you have al ready purchased a TS-590S, are thinki ng of purchasing of this p roduct, or are interested in HF tr[...]

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 Ken[...]

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 connected to the PC to be used) ........................ ... 53 8.2.4 Controllin g TS-590S from a PC using the USB connector (microphone and s[...]

TS-590S CONTENTS I At the end of September , 2010, the TS -590S, a Kenwood HF band amateur ra dio transceiver was launched af ter the 7-year long si lence since the releas ing of TS-480S. As implied by this model n ame, TS-590S is th e “legitimate successor to th e TS-570S”. The product categ ory taken over from the TS-570S by th e TS-590S was [...]

II CONTENTS TS-590S TS-590S was planned as the “legitimate successor to th e TS-570S” after 14 years or more of tim e have elap sed since the fi rst market appeara nce of TS-570S in 1 996. TS-590S is ti tled 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 that is used to evaluate a transceiver . And, above all, the cap ability to protect against i nterference 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 i[...]

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-conver sion pa th. In the up-conver sion pa th, double-hea ded arrows are sho wn at each st age pointing in both directions. This means a transm it signal as well as a receive signal is p rocessed in the u p- c[...]

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 ships b etween frequencies up on receipt of a 14 MHz si gnal. The signal from the antenn a passes th e 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 four 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 provided by the first local oscillator , the RX signal is converted to 1 1.374 MHz (first IF f[...]

1 RECEPTION TS-590S CONTENTS 5 • Durin g the transmi ssion: The up-conversion conf iguration is always us ed in all modes an d bandwidths. During the transmission in SSB mo de, the pass ba ndwidt h is determ ined by the fil ter settin gs (digital filter of the DSP) selected in the menu mode. Th e pass bandwidth of the filter in the analog stage i[...]

1 RECEPTION 6 CONTENTS TS-590S Following is a grap h that provides th e comparis on between the performances of roofing filt ers. Figure 1-5 Comp arison of Bandp ass Characteristics of MCFs Figure 1-5 compa res the band p ass characteristics of a ro ofing filter of center fre quency 73 MHz (gray line); and the roofin g filters of the center freque [...]

1 RECEPTION TS-590S CONTENTS 7 Measurement Conditions: The abscissa axis sh ows the distance from the interfe ring signal. For example, it represents that at the point of 10 kHz the rece ive frequenc y is 14.200 MHz and two interfer ing signals of 14.2 10 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 the pass bandwidth in the roofing filter can be vie wed in graphs in Figure 1-5 and Figure 1-6. So, let’ s see the characteristics of the up-conversi on system in which the same front end configuration is used as previous mod els. We wil l explain using the measurement result tha[...]

1 RECEPTION TS-590S CONTENTS 9 T ypical built-in RX auxili ary circuit s include the va riable p ass bandwidth circuit, notch filter and n oise 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 two a uxiliary circui[...]

1 RECEPTION 10 CONTENTS TS-590S Following is a fig ure that represents the TX-RX UNIT th at has the circuitry configuratio n in question. By detach ing the lower case, you ca n access the jumper co nnectors CN101 thro ugh CN103. Figure 1-8 TX-RX UNIT 1) Raising sensitivity in the BC band: Remove the jump er for CN103 and insert the jump er into CN1[...]

TS-590S CONTENTS 11 2 TRANSMISSION The tradition of high quality audio technology th at users rely on Kenwoo d to deliver is pr oduced by combining ana log and digital technologies that Kenwood has nurtured thus far . The DSP controls modulation and determine s the sound qua lity and anal og circuit s convey and amplify the signa l 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 hi gh-speed relay-c ontrolled antenna tuner that was first employ ed in the TS-570S. In contrast to th e variable capacitor type antenna tuner , it employs a small and lig htweight relay to achieve a su fficient matc hing range and a fa st tuning oper ation with digit a l control. The contro[...]

2 TRANSMISSION 14 CONTENTS TS-590S Figure 2-3 Timing chart (1 or 2) Figure 2-4 Timing chart (3) Menu N o. 5 3 o r 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 DRV terminal that fo rme rly 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 level fu rther , you can ad just the transmi[...]

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 conventional PLL/VCO system, a 14-bit DDS (dir ect digit al synthesizer) is adopted to provide the output sign al directly to the mixe r . During the dow n conversion, the oscillator freque ncy 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 conn ected 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 a udio 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 DSP ha[...]

4 DSP 22 CONTENTS TS-590S Figure 4-3 Control Block Diagram of IF-AGC In the attack control circuit, in addition to the n ormal fast gain shif t function, we have added a technology to cap ture the signal transfor mation in an overshoot fo rm and to apply moderate 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 incorpora tes rich and powerfu l interference elimin ation functions that work within th e IF-AGC loop (Figure 4-3). The previous model (TS-2000S) already featured a digi tal IF filter and the auto notch filter fun ction, and in the TS-590S, a digit al noise blanker (NB2) an d 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 th e notch knob. Th e auto notch filt er is a notch filter tha t automatical ly tracks a beat frequency with an adaptive filter technique. Bo th notch filters ha ve the atte nuation of more th an 60 dB at th e center frequen cy . Figure 4[...]

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 filter (Fig ure 4-8). For a simple beat frequency , Normal is effective. If there is an interfering SSB signal, or in the event the t arget signal is also tri mmed by LO CUT/ HI CUT , a Wide setting of [...]

4 DSP TS-590S CONTENTS 27 For the demodulation of th e RX signal in SSB, CW , FSK and SSB-DA T A modes, w e have employed the proven PSN (Phase Sh ift Network) design again. In the previous mod els (TS-2000S an d TS-870S), the selection of the PSN’s cha racteristics was interlocked with the passban d setting of the IF filter , and when the pa ssb[...]

4 DSP 28 CONTENTS TS-590S Following is how the TX signal is processed. The audio signal captured from the microphone or an external terminal is first pro cessed by the bandwid th-limiting filter , microphone gain cont rol, speech processor or VOX, a nd then, in SSB and AM mo des, the signal is modu lated and outpu t as an IF signal; in FM mode, a C[...]

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 shapi ng 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 method s available for beat cancellati on: BC1 and BC2. BC1 is tuned to be effective against weak or continuous be at interference, while BC2 canc els intermittent beat s 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 noise , the noise blanke r cannot suppress the noi se effective ly . In such a case, by using other methods su ch as noise redu ction in conjunctio n, the reception cond itions may be improved. There are two methods availa ble[...]

4 DSP 32 CONTENTS TS-590S Unlike the conven tional noise reduct ion methods, the spectral subtraction m ethod of NR1 is a brand new approach of no ise reduction devel oped for the TS-590S. NR1 estimates the noise componen t and take s away (subtract s) the estima ted noise component from th e RX signal to make the targe t 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 suppressi on process, the l ine enhancer method based on a DS P has been adopte d by many amateu r radio transceivers in rece nt years. This method automatically a djusts the filter characteristics accord ing to the characteristi cs of a RX signal to obt ain filter charac teristics suit able for passing periodic[...]

4 DSP TS-590S CONTENTS 35 NR2 is what is known as SP AC. It detect s periodic signals cont ained in th e RX signal and piec es together the d etected periodi c signals to prod uce output rece ive audio. As a resul t, only th e periodic signals in the re ceive audio emerge clearly . NR1 based on an NR1 line enh ancer is a filter in esse nce, but NR2[...]

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

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

38 CONTENTS TS-590S 5 SOFTW ARE: ENHANCING OPERA TING PLEASURE In addition to the features we have explaine d thus far , t he TS-590S co mes 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 different need s. Figure 5-1 Front Panel of th[...]

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 for operations with non-vo ice modulation types su ch as RTTY and PS K31. Therefore, the IF DSP filter can be adjusted to as narrow as 50 Hz in SSB [...]

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 operation in the 135 kHz band, you need to make a separate application for certification to work this band. • Higher-level [...]

5 SOFTW ARE: ENHANCING OPERA TING PLEASURE TS-590S CONTENTS 41 Just like the TS-480 S, TS-590S employs double fu nction keys to activate diff erent functions by holding down a key . This is meant to ma ke operatio n easier th an in the sy stem requiring one to push a function key first before hitting another key to invo ke the desired fu nction. Si[...]

5 SOFTW ARE: ENHANCIN G OPERA TING PLEASURE 42 CONTENTS TS-590S The TS-590S come s with a quick memory function a s did with the previous t ransceivers. The number of cha nnels is a maximum of 5 as default, but you can in crease the number u p to 10 by setting in the me nu mode. Con versely , if you wish 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 possibl e to increase th e number of the 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 disco[...]

5 SOFTW ARE: ENHANCIN G OPERA TING PLEASURE 44 CONTENTS TS-590S The optional VGS-1 voice guide and storage un it can be installed on the transceiver . The voice guide and audio recordi ng function that are accl aimed by sight-i mpair ed operators bec ome available. The following are the det ails of the VGS-1 and new functions adde d for the current[...]

5 SOFTW ARE: ENHANCING OPERA TING PLEASURE TS-590S CONTENTS 45 On the rear panel of the TS-590S, projections are placed near some connectors. Figure 5-8 Projections on the Rear Panel We have p rovided these guid es to meet the demands from sight- impaire d operators who wis h to set up the transceiver without help fr om someone else. If two identic[...]

46 CONTENTS TS-590S 6 APPEARANCE DESIGN: “DESIGN CONCEPT” REVEALED BY DESIGNING ENGINEER The design de velopment of th e TS-590S was star ted 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”, “hig[...]

TS-590S CONTENTS 47 7 STRUCTURAL FEA TURES We have designed the chassis o f 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 D ISPLA Y UNIT in front. We have placed two cooling f ans in [...]

7 STRUCTURAL FEA TURES 48 CONTENTS TS-590S We have also paid much attention to th e area and sh ape of the air inlets/outlets to lessen the operation nois e of cooling fan motors. T o reduce the noise from the air inle ts/outlets, the area and shape were examined through repeated experiments and we have finally succeeded in alleviating the cooling [...]

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-590 S’s superb cooling capability . Figure 7-6 T emperature Dat a while T ransmitting Continuously As can be seen from th e ab[...]

7 STRUCTURAL FEA TURES 50 CONTENTS TS-590S “We wanted to complete the d isplay without un even brightness!” Tha t was our goal of desig ning the display screen, or the “face” of the tran sceiver . On the TS-590 S, after repeated examinations and trials, we have fina lly reached our go al of a display with perfectly ev en brightnes s. The se[...]

7 STRUCTURAL FEA TURES TS-590S CONTENTS 51 We have d esigned the main control knob locate d in the center of the fron t panel, focu sing on easy 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 per revolut ion so that a us[...]

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 the Windows related software products that can be used with the TS-590S. T able 8-1 Windows Related Sof tware for TS-590S We will provide some typical system con figurations using th[...]

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 are us ed. 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 au[...]

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) is s oftware enabl ing control of the TS-590S 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-590 are inheri ted from ARCP-480 for the TS-480S. In addition, ARCP-590 conforms 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 familiar[...]

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 listi ng by category as well as the co nventional general listing allow s quick access to the desired function. Figure 8-3 Menu Function The ARCP-590 enables a user to set the d elay time fo r switching from t[...]

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 ha s been expanded from a maximum of 10 to 100. The ARCP-480 and ARHP-10 for the TS-480S are su pplied w ith the V oIP function to send and receive voice over the network connecti on, but the V oIP engine is n ot compa[...]

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 ce nter of the scan sp an. The scan center freq uency and the scan span can be sto red for each amateur radio 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 co ntrol th e TS-590S with Kenw ood Network Com mand System (KNS). Figure 8-8 Main Window of ARHP-590 ARHP-590 is avail able free and ca n be downloade d from Kenwood’ s website. URLs from which ARHP-5 90 can be downlo aded: http://www .kenwo od.com/i/prod[...]

8 EXP ANSIVE APPLICA TION SOFTW ARE 60 CONTENTS TS-590S ARHP-590 allows a use r to check the oper ating status of ARHP-590 and TS-5 90S even after minimized. Y ou can check th e st atus of the p ower of the TS-590S (Power ON or Power OFF) a nd your connection and tran smission st atuses. Figure 8-9 Checking the Operating S t atus For details of Ken[...]

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 only to connect the TS-590S a nd a PC with a single USB cable to use the microp hone and spea ker connected to th e PC in place of those on the trans ceiver . T o use ARCP-590 ov er a USB cable connection , the virtual COM port driver[...]

8 EXP ANSIVE APPLICA TION SOFTW ARE 62 CONTENTS TS-590S Figure 8-1 1 Device T ab In the “Reception Outpu t” of the T ran sceiver frame, “Microphone (USB Audio CODE C)” must be selected. In the “Modulation Input” of the T ransc eiver 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 have re leased the AR VP-10H prog ram that provides the V oIP fu nction at the host st ation (to which TS-590S is conn ected) and the ARVP-10R program that pr ovides the V oIP func tion at the remote station (which contro ls the transceiver remotely). Figure 8-12 Main Window of ARVP-10H Fig[...]

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 necessary set tings 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 necessary set tings 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 connecti [...]

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 virtua l COM port driver needs to be inst alled on 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 S[...]

TS-590S CONTENTS 67 9 OPTIONAL ACCESSOR Y PS-60 is a regulated DC p ower supply designed for amat eur 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 9 5.5 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 supp ly typically pro duces large ha rmonics in the rectifier circuit by it s switching operation wh ich compromises th e phase factor and may ca use noise and o ther disturban ces to external devices du e[...]

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