The Elecraft KXPA100 100 watt Amplifier and KXAT100 Autotuner Phil Salas – AD5X Introduction Besides my main station Elecraft K-Line (K3/KPA500/KAT5
Figure 4 shows the completed amplifier just before attaching the cover. The bottom two pc board assemblies (amplifier and filter) come pre-mounted to
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
Table 1 summarizes the measured amplifier performance. Table 1: Elecraft KXPA100, serial number 0555 Manufacturer's Specifications Measured in
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
The KXAT100 utilizes RF sensing (1st priority) or KX3 data to switch bands automatically . The KXAT100 interrupts the KXPA100 during a band change, tu
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
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
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
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