Elecraft XG2 Manual - Manual

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L E C R A F T
XG2
R E C E I V E R T E S T O S C I L L A T O R
R e v F , M a r c h 2 8 , 2 0 1 2
Copyright © 2012, Elecraft, Inc., All Rights Reserved
Introduction
The Elecraft XG2 is a crystal oscillator with accurate 1 µV and 50 µV output levels. It's
ideal for receiver test and alignment. The 1-µV output can be used to measure a receiver's
sensitivity, while the 50-µV output is useful for S-meter calibration. Switch-selected
output frequencies of 3579, 7040, and 14060 kHz provide convenient test signals on 80,
40, and 20 meters; harmonics of these frequencies can be used for measurements on
higher bands. The XG2's unique oscillator stage runs at an extremely low level,
eliminating the need for interstage shielding. A red LED is provided to indicate power-on
and another red LED is provided to alert the operator to accidental transmit into the
XG2's output.
Specifications
RF Output Level 1 µV (-107 dBm) and 50 µV (-73 dBm) into 50 ohms
Output Accuracy Better than +/- 2 dB at 25 deg. C (+/- 1 dB typical)
Frequency 3579.5, 7040.0 and 14060.0 kHz +/- 1 kHz at 25 deg. C
Reverse Protection 5 watts for 4 seconds, 10 watts for 2 seconds (typical; not
guaranteed)
Current Drain About 250 µa from on-board 3-V, 220 mA-hr battery (est. life 800
hours)
Size PC board: 3"L x 1.5"W; 4.3"L including BNC connector
Parts Inventory
Ref Qty Description Part #
R2 1 Res, 18.7 k 1% (brn, gry, vio, red, brn) E500127
R3 1 Res, 16.5 Ω 1% (brn, blu, grn, gold, brn) E500122
R4 1 Res, 57.6 Ω 1% (grn, vio, blu, gold, brn) E500124
R5 1 Res, 57.6 Ω 1% (grn, vio, blu, gold, brn) E500124
R6, R7 2 Res, 348 Ω 1% (org, yel, gry, blk, brn) E500123
R8 1 Res, 1.24 k 1% (brn, red, yel, brn, brn) E500126
(parts inventory continues on next page)