ELECRAFT KXPA100 Instruction Manual

Browse online or download Instruction Manual for Audio amplifiers ELECRAFT KXPA100. ELECRAFT KXPA100 Instruction manual User Manual

  • Download
  • Add to my manuals
  • Print
  • Page
    / 9
  • Table of contents
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 0
The Elecraft KXPA100 100 watt Amplifier and KXAT100 Autotuner
Phil Salas AD5X
Introduction
Besides my main station Elecraft K-Line (K3/KPA500/KAT500), I also own a KX3
transceiver that I primarily use for portable operation. Therefore I was extremely
interested when the ARRL asked me to review the new 100-watt KXPA100 160-6 meter
linear amplifier. The KXPA100 is clearly designed to seamlessly interface with the KX3
transceiver, however is also designed to work with any QRP rig. And an optional internal
wide-range automatic antenna tuner provides antenna system flexibility when necessary.
The KXPA100 is available factory built and tested, or as a no-solder kit. The unit
reviewed here is the KXPA100/KXAT100 no-solder kit.
Figure 1: Elecraft KXPA100/KXAT100 Front and Rear views
First the build!
The KXPA100/KXAT100 arrived in a small 7.5” x 11.5” x 13” box. Inside were two
boxes containing the fully assembled and tested main RF assembly and the KXAT100
tuner assembly, and a box containing the cabinet and associated hardware. See Figures 2
and 3.
Figure 2: KXPA100 arrives! Figure 3: Kit sub-assemblies
Page view 0
1 2 3 4 5 6 7 8 9

Summary of Contents

Page 1

The Elecraft KXPA100 100 watt Amplifier and KXAT100 Autotuner Phil Salas – AD5X Introduction Besides my main station Elecraft K-Line (K3/KPA500/KAT5

Page 2

Figure 4 shows the completed amplifier just before attaching the cover. The bottom two pc board assemblies (amplifier and filter) come pre-mounted to

Page 3

significant out-of-spec harmonics will be generated. This was not clear in the Revision A KXPA100 User Manual, and so we thought there was a problem w

Page 4

Table 1 summarizes the measured amplifier performance. Table 1: Elecraft KXPA100, serial number 0555 Manufacturer's Specifications Measured in

Page 5

TABLE 2: Serial Number 555 Amplifier Measurements: +13.9VDC Key-Down voltage, Unkey 0.28amps, key down no drive 1.15 amps Band Drive Input SWR P

Page 6

The KXAT100 utilizes RF sensing (1st priority) or KX3 data to switch bands automatically . The KXAT100 interrupts the KXPA100 during a band change, tu

Page 7

Table 4: Antenna Port Isolation Band ANT 2-1 20M 48dB 10M 43dB 6M 40dB Tuner Matching and Loss Measurements Resistive matching range and lo

Page 8

finite-Q components, resulting in the tuner actually tuning into its own internal losses. I did not perform the open/short test for two reasons. Firs

Page 9

flexibility most hams will ever need. The KXPA100 is reasonably priced as solid-state amplifiers go, and the no-solder kit is quite easy to build. If

Comments to this Manuals

No comments