TS-870S_ARRL_expanded_test_results_1996.pdf

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1、ARRL Laboratory Test Result Report Model: TS-870 Serial: 70500128 Copyright 1996, American Radio Relay League, Inc. All Rights Reserved. ARRL Laboratory Expanded Test-Result Report Manufacturer: Kenwood Model: TS-870S Serial #: 70500128 QST Product Review February, 1996 American Radio Relay League,

2、Inc., Technical Department Laboratory, 225 Main St., Newington, CT 06111, (860) 594-0214. Internet: mtracyarrl.org. Price $7.50 for ARRL Members, $12.50 for non-Members, postpaid. Copyright 1996, American Radio Relay, League, Inc. All Rights Reserved Test Record: Test or Test SeriesTest EngineerDate

3、 Test batteryMike Gruber10/15/95 Additional Spectral purity graphsEd Hare1/27/96 Additional transmitter IMD graphsEd Hare1/27/96 Swept Receiver dynamic range graphsEd Hare1/28/96 Transmit bandpass graphsEd Hare1/28/96 Receive bandpass graphsEd Hare1/28/96 ARRL Laboratory Test Result Report Model: TS

4、-870 Serial: 70500128 Copyright 1996, American Radio Relay League, Inc. All Rights Reserved. Page 1 ARRL Laboratory Test Result Report Model: TS-870 Serial: 70500128 Copyright 1996, American Radio Relay League, Inc. All Rights Reserved. Page 2 List of Tests: (Page numbers are omitted because the len

5、gth of the report varies from unit to unit.) Introduction Transmitter Tests: Transmit Output Power Transverter Jack Output Power Current Consumption Transmit Frequency Range Spectral Purity Transmit Two-Tone IMD Carrier and Sideband Suppression CW Keying Waveform Transmit Keyer Speed SSB/FM Transmit

6、 Delay Transmit/Receive Turnaround Transmit Composite Noise Receiver Tests: Noise Floor (Minimum Discernible Signal) Receive Frequency Range AM Sensitivity FM Sensitivity Blocking Dynamic Range Two-Tone, Third-Order Dynamic Range and Intercept Point Two-Tone, Second-Order Intercept Point In-Band Rec

7、eiver IMD FM Adjacent Channel Selectivity FM Two-Tone, Third-Order IMD Dynamic Range Image Rejection IF Rejection Audio Output Power IF + Audio Frequency Response Squelch Sensitivity S-Meter Accuracy and Linearity In-Band Receiver IMD Notch Filter Audio Filter Receiver bandpass Followup Tests: Tempe

8、rature Chamber Test Description Duty Cycle Test Description Appendix Work in Progress . (for what it is worth, as is) Comparative Table ARRL Laboratory Test Result Report Model: TS-870 Serial: 70500128 Copyright 1996, American Radio Relay League, Inc. All Rights Reserved. Page 3 Introduction: This d

9、ocument summarizes the extensive battery of tests performed by the ARRL Laboratory for each unit that is featured in QST Product Review. For all tests, there is a discussion of the test and test method used in ARRL Laboratory testing. For most tests, critical conditions are listed to enable other en

10、gineers to duplicate our methods. For some of the tests, a block diagram of the test setup is included. The ARRL Laboratory has a document, the ARRL Laboratory Test Procedures Manual, that explains our specific test methods in detail, with a test description similar to the one in this report, a bloc

11、k diagram showing the specific equipment currently in use for each test, along with all equipment settings and a specific step by step procedure used in the ARRL Laboratory. While this is not available as a regular ARRL publication, the ARRL Technical Department Secretary can supply a copy at a cost

12、 of $20.00 for ARRL Members, $25.00 for non-Members, postpaid. Most of the tests used in ARRL product testing are derived from recognized standards and test methods. Other tests have been developed by the ARRL Lab. The ARRL Laboratory test equipment is calibrated annually, with traceability to Natio

13、nal Institute of Standards and Technology (NIST). Most of the equipment is calibrated by a contracted calibration laboratory. Other equipment, especially the custom test fixtures, is calibrated by the ARRL Laboratory Engineers, using calibrated equipment and standard techniques. The units being test

14、ed are operated as specified by the equipment manufacturer. The ARRL screen room has an ac supply that is regulated to 117 or 234 volts. If possible, the equipment under test is operated from the ac supply. Mobile and portable equipment is operated at the voltage specified by the manufacturer, at 13

15、.8 volts if not specified, or from a fully charged internal battery. Equipment that can be operated from 13.8 volts (nominal) is also tested for function, output power and frequency accuracy at the minimum specified voltage, or 11.5 volts if not specified. Units are tested at room temperature and hu

16、midity as determined by the ARRL HVAC system. Also, units that are capable of mobile or portable operation are tested at their rated temperature range, or at - 10 to +60 degrees Celsius in a commercial temperature chamber. ARRL Product Review testing represents a sample of only one unit (although we

17、 sometimes obtain an extra sample or two for comparison purposes). This is not necessarily representative of all units of the same model number. It is not uncommon that some parameters will vary significantly from unit to unit. The ARRL Laboratory and Product Review editor work with manufacturers to

18、 resolve any deviation from specifications or other problems encountered in the review process. These problems are documented in the Product Review. Units used in Product Review testing are purchased off the shelf from major distributors. We take all necessary steps to ensure that we do not use unit

19、s that have been specially selected by the manufacturer. When the review is complete, the unit is offered for sale in an open mail bid, announced regularly in QST . Related ARRL Publications and Products: The 1998 ARRL Handbook for Radio Amateurs has a chapter on test equipment and measurements. The

20、 book is available for $32.00 plus $6 shipping and handling. The Handbook is also now available in a convenient, easy to use CD-ROM format. In addition to the complete Handbook text and graphics, the CD-ROM includes a search engine, audio clips, zooming controls, bookmarks and clipboard support. The

21、 cost is $49.95 plus $4.00 shipping and handling. You can order both versions of the Handbook from our Web page, or contact the ARRL Publications Sales Department at 888-277-289 (toll free). It is also widely stocked by radio and electronic dealers and a few large bookstores. The ARRL Technical Info

22、rmation Service has prepared an information package that discusses Product Review testing and the features of various types of equipment. Request the What is the Best Rig To Buy package from the ARRL Technical Department Secretary. The cost is $2.00 for ARRL Members, $4.00 for non-Members, postpaid.

23、 Many QST Product Reviews have been reprinted in three ARRL publications: The ARRL Radio Buyers Sourcebook (order #3452) covers selected Product Reviews from 1970 to 1990. The cost is $15.00 plus $4.00 shipping and handling. The ARRL Radio Buyers Sourcebook Volume II (order #4211) contains reprints

24、of all of the Product Reviews from 1991 and 1992. The cost is $15.00 plus $4.00 shipping and handling. The VHF/UHF Radio Buyers Sourcebook (order #6184) contains nearly 100 reviews of transceivers, ARRL Laboratory Test Result Report Model: TS-870 Serial: 70500128 Copyright 1996, American Radio Relay

25、 League, Inc. All Rights Reserved. Page 4 antennas, amplifiers and accessories for VHF and above. You can order these books from our Web page or contact the ARRL Publications Sales Department to order a copy. ARRL Laboratory Test Result Report Model: TS-870 Serial: 70500128 Copyright 1996, American

26、Radio Relay League, Inc. All Rights Reserved. Page 5 QST is now available on CD ROM! The 1995 ARRL Periodicals CD ROM (order #5579) and the 1996 ARRL Periodicals CD ROM (order #6109) contain a complete copy of all articles from a years worth of QST, the National Contest Journal and QEX, ARRLs experi

27、menters magazine. It is available for $19.95 plus $4.00 for shipping and handling. Contact the ARRL Publications Sales Department to order a copy. Older issues of QST are also available: QST View CD-ROMs come in sets covering several years each - QST View 1990-1994 (order #5749), QST View 1985-1989

28、(order #5757), QST View 1980-1984 (order #5765), QSTView 1975-1979 (order #5773), QSTView 1970-1974 (order #5781), QSTView 1965-1969 (order #6451), QSTView 1960-1964 (order #6443) and QSTView 1950-1959 (order #6435). The price for each set is $39.95. Shipping and handling for all ARRL CD ROM product

29、s is $4.00 for the first one ordered, $1.00 for each additional set ordered at the same time. Additional test result reports are available for: ManufacturerModelIssue Alpha Power91Sep 97 AmewritronAL-800HSep 97 ICOMIC-706Mar 96 IC-756May 97 IC-775DSPJan 96 IC-821HMar 97 JRCNRD-535May 97 KenwoodTS-57

30、0DJan 97 TS-870SFeb96 QROHF-2500DXSep 97 Ten-TecCentaurJun 97 Omni VI +Nov 97 YaesuFT-920Oct 97 FT-1000MPApr 96 The cost is $7.50 for ARRL Members, $12.50 for non-Members for each report, postpaid. ARRL Members can obtain any three reports for $20.00, postpaid. ARRL Laboratory Test Result Report Mod

31、el: TS-870 Serial: 70500128 Copyright 1996, American Radio Relay League, Inc. All Rights Reserved. Page 6 Transmitter Output Power: Test description: One of the first things an amateur wants to know about a transmitter or receiver is its RF output power. The ARRL Lab measures the CW output power for

32、 every band on which a transmitter can operate. The unit is tested across the entire amateur band and the worst-case number for each band is reported. The equipment is also tested on one or more bands for any other mode of operation for which the transmitter is capable. Typically, the most popular b

33、and of operation for each mode is selected. Thus, on an HF transmitter, the SSB tests are done on 75 meters for lower sideband, 20 meters for upper sideband, and AM tests are done on 75 meters, FM tests are done on 10 meters, etc. This test also compares the accuracy of the units internal output-pow

34、er metering against the ARRL Laboratorys calibrated test equipment. The purpose of the Transmitter Output-Power Test is to measure the DC current consumption at the manufacturers specified DC-supply voltage, if applicable, and the RF output power of the unit under test across each band in each of it

35、s available modes. A two-tone audio input, at a level within the manufacturers microphone-input specifications, is used for the SSB mode. No modulation is used in the AM and FM modes. Many transmitters are derated from maximum output power on full-carrier AM and FM modes. In most cases, a 100-watt C

36、W/SSB transmitter may be rated at 25 watts carrier power on AM. The radio may actually deliver 100 watts PEP in AM or FM but is not specified to deliver that power level for any period of time. In these cases, the published test-result table will list the AM or FM power as being as specified. In alm

37、ost all cases, the linearity of a transmitter decreases as output power increases. A transmitter rated at 100 watts PEP on single sideband may actually be able to deliver more power, but as the power is increased beyond the rated RF output power, adjacent channel splatter (IMD) usually increases dra

38、matically. If the ARRL Lab determines that a transmitter is capable of delivering its rated PEP SSB output, the test-result table lists the power as being as specified. Key Test Conditions: Termination: 50 ohms resistive, or as specified by the manufacturer. Block Diagram: CAUTION!: Power must only

39、be applied to the attenuator input! Do not reverse input and output terminals of the Bird 8329. RF Power Attenuator Receiver audio output to be terminated with specified impedance. Receiver is tested using 500 Hz bandwidth, or closest available bandwidth to 500 Hz. Block Diagram: RF SIGNAL GENERATOR

40、 MARCONI 2041 10 dB STEP ATTENUATOR HP 355D 1 dB STEP ATTENUATOR HP 355C DUT RECEIVER AUDIO/ DISTORTION METER HP 339A HI-Z MONITOR AMP Noise Floor Test Results: FrequencyPreamplifierdBmNotes 1.02 MHzOFF-108.0 1.02 MHzON-116.9 1,82 MHzOFF-124.0 1.82 MHzON-133.2 3.52 MHzOFF-131.4 3.52 MHzON-141.2 7.02

41、 MHzOFF-127.9 7.02 MHzON-138.4 10.12 MHzOFF-130.8 10.12 MHzON-140.8 14.02 MHzOFF-128.7 14.02 MHzON-139.0 18.12 MHzOFF-131.0 18.12 MHzON-140.5 21.02 MHzOFF-126.9 21.02 MHzON-139.5 24.92 MHzOFF-129.8 24.92 MHzON-143.5 28.0 MHzOFF-130.5 28.0 MHzON-142.9 ARRL Laboratory Test Result Report Model: TS-870

42、Serial: 70500128 Copyright 1996, American Radio Relay League, Inc. All Rights Reserved. Page 31 Notes: IF BW of 400 Hz. Sensitivity did not change appreciably with changes in shift. ARRL Laboratory Test Result Report Model: TS-870 Serial: 70500128 Copyright 1996, American Radio Relay League, Inc. Al

43、l Rights Reserved. Page 32 Receive Frequency Range: Test Description: This test measures the tuning range of the receiver. The range expressed is the range over which the receiver can be tuned. Most receivers exhibit some degradation of sensitivity near the limits of their tuning range. In cases whe

44、re this degradation renders the receiver unusable, we report both the actual and useful tuning range. Test Results: Minimum FrequencyMinimum Frequency MDS Maximum Frequency Maximum Frequency MDS Notes 30 kHz- 103 dBm30 MHz-140 dBm Notes: 1. Unit has useable sensitivity over entire range, but some re

45、ceiver birdies were observed near the band edges. AM Sensitivity Test: Test Description: The purpose of the AM receive Sensitivity Test is to determine the level of an AM signal, 30% modulated at 1 kHz, that results in a tone 10 dB above the noise level (MDS) of the receiver. Two frequencies, 1.020

46、MHz and 3.800 MHz are used for this test. The more negative the number, expressed in dBm, or the smaller the number expressed in voltage, the better the sensitivity. Test Results: FrequencyPreamplifierdBmuVNotes 1.02 MHzOFF-76.135.0 1.02 MHzON-86.111.1 3.8 MHzOFF-99.72.32 3.8 MHzON -109.60.741 Notes

47、: 0. IF filter, 6 kHz. ARRL Laboratory Test Result Report Model: TS-870 Serial: 70500128 Copyright 1996, American Radio Relay League, Inc. All Rights Reserved. Page 33 FM SINAD and Quieting Test: Test Description: The purpose of the FM SINAD and Quieting Test is to determine the following at a test

48、frequency of 29.000 MHz: 1) The 12 dB SINAD value. SINAD is an acronym for SIgnal plus Noise And Distortion and is a measure of signal quality. The exact expression for SINAD is the following: SINAD = Signal + Noise + Distortion (expressed in dB) Noise + Distortion If we consider distortion to be me

49、rely another form of noise, (distortion, like noise, is something unwanted added to the signal), we can further reduce the equation for SINAD to: SINAD = Signal + Noise (expressed in dB) Noise If we now consider a practical circuit in which the signal is much greater than the noise, the value of the SIGNAL + NOISE can be approximated by the level of the SIGNAL alone. The SINAD equation then becomes the signal to noise ratio. The approximation now becomes: