Elecraft_K-2_XV_serie_user_2006.pdf

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1、Elecraft Transverter Models XV50, XV144, XV222, XV432 Owners Manual Rev C, April 2006 Copyright 2006, Eleraft; All Rights Reserved Table of Contents INTRODUCTION.1 Features. 1 Using an Elecraft K2 as the I.F. Transceiver. 1 Customer Service and Support. 1 Repair Service . 2 SPECIFICATIONS.3 General.

2、 3 Transmitter. 3 Receiver. 3 INSTALLATION.4 Quick-Start Installation. 4 Installation Options . 4 Special Notes for Elecraft K2 Owners . 4 Elecraft K2 With K60XV Adapter. 5 Elecraft K2 With No K60XV . 6 Non-Elecraft 28 MHz Rig Separate Transmit and Receive RF Connections. 7 Non-Elecraft 28 MHz Rig S

3、ingle Transmit and Receive RF Connection. 8 Transverter Control Cable for Elecraft K2 or K2/100. 9 Daisy-Chaining Multiple Transverters. 12 Using an External Receive Preamplifier. 13 Using an External Power Amplifier. 13 OPERATION. 14 Cautions to Avoid Spurious Emissions From Your Station. 14 Turnin

4、g the Transverter On. 14 Power Output Control . 14 Local Oscillator Power Control . 14 I.F. Overload Condition. 15 Transmit-Receive Switching Delay. 15 Front Panel Display Control. 15 OPTIONS AND MODIFICATIONS. 16 Tools Required. 16 Optional Crystal Oven. 17 Changing Between Split and Common Antenna

5、s . 18 Reducing Receive Gain to Preserve System Dynamic Range. 19 Optional Feet and Bail Attachment. 19 CIRCUIT DESCRIPTION. 20 Signal Flow . 20 Circuit Details. 22 ALIGNMENT AND TEST. 25 Part I - Initial Setup . 25 Part II Power Control. 26 Part III - Local Oscillator Level. 26 Part IV Receiver RF

6、Amplifier Bias Adjustment. 27 Part V RF Power Amplifier Quiescent Current Adjustment. . 27 Part VI Filter Alignment. 27 Part VII Power Display LED Calibration. 28 Part VIII Receiver Input Alignment. 28 Part IX - Overload Protection Circuit Test. 29 Local Oscillator Frequency Calibration (Optional).

7、30 SCHEMATICS AND PARTS PLACEMENT DIAGRAMS.Appendix A TROUBLESHOOTING.Appendix B JUMPER AND DIP SWITCH SETTINGS.Appendix C - 1 - Introduction The Elecraft XV Series high-performance transverters may be used with any transceiver or transmitter/receiver pair that covers the 10 meter band. Separate tra

8、nsverters are offered for the following bands: Model XV50: 50 to 52 MHz. Model XV144: 144 to 146 MHz. Model XV222: 222 to 224 MHz. Model XV432: 432 to 436 MHz. Features I.F. connections to the transceiver can be either single-port, using a single RF cable, or dual port, using separate receive and tr

9、ansmit cables. The transverters include an adjustable input level control that will provide full output from the transverter with I.F. power levels as low as 0.01 watts up to 8 watts. Full protection against accidental high-power transmit of up to 100 watts into the I.F. port is also included. The r

10、eceiver features a very low noise figure with a PHEMT RF stage for weak-signal work. Relays are used for transmit/receive switching to avoid receive performance degradation by diode switches in the signal path. The transmitter is conservatively rated at 20 watts output PEP SSB, CW or data modes. The

11、 RF output is displayed on the front panel with a 10- segment LED bargraph. The LED display may be switched between dot or bar modes. When used with an Elecraft K2 transceiver, the bargraph has two brightness modes. The transverters are housed in attractive, low-profile enclosures that may be stacke

12、d for multi-band operation. An illuminated band label identifies the transverter in use. Several transverters may be connected to a single transceiver. Internal relays select only the transverter for the band in use, avoiding the need to switch I.F. cables. Using an Elecraft K2 as the I.F. Transceiv

13、er While the transverters will work with nearly any HF transceiver, using them with our Elecraft K2 (or K2/100) offers additional benefits. The high-performance K2 provides: Low noise, single-conversion, wide dynamic range receiver. Four adjustable I.F. crystal filter bandwidths per mode. Automatic

14、transverter band switching with individual menu- selected output power levels. Direct display of the transverter operating frequency to 10 Hz, including per-band adjustable offsets of +/- 9.99 kHz. Four RIT ranges from +/- 0.6 to +/- 4.8 kHz. We recommend that K2s with serial numbers 3445 and below

15、be equipped with Elecraft-approved modifications that reduce spurious responses and enhance frequency stability. See Special Notes for Elecraft K2 Owners on page 4. Customer Service and Support Whether you build the kit or buy a factory-built transverter, youll find a wealth of information on our we

16、b site at . Among the materials there youll find the latest application notes, photographs, any updates to this manual, and information on new products. We also have a popular e-mail forum. You can sign up for it from the web site. Its a great way to interact with other Elecraft owners, exchange ide

17、as and find answers to many questions. You can also get assistance by telephone or by sending an e-mail to . E-mail is preferable because it gives us a written record of your question. Telephone assistance is available from 9 A.M. to 5 P.M. Pacific time, Monday through Friday (except US Holidays) at

18、 831-662-8345. - 2 - Repair Service Contact Elecraft before returning your equipment to obtain the current information on repair fees. To ship the unit, first seal it in a plastic bag to protect the finish. Use a sturdy packing carton with at least 3-in (8 cm) of foam or shredded paper on all sides.

19、 Seal the package with reinforced tape. (Neither Elecraft or the carrier will accept liability for damage due to improper packaging.) Elecraft 1-Year Limited Warranty If building a kit, complete the assembly, carefully following all instructions in the manual, before requesting warranty service. Wha

20、t is covered: During the first year after the date of first consumer purchase, Elecraft will replace defective parts free of charge (post-paid). We will also correct any malfunction caused by defective parts and materials. You must send the unit at your expense to Elecraft. We will pay return shipping. What is not covered: This warranty does not cover correction of assembly errors or misalignment; re