Elecraft PR10 - Manual

Elecraft • www.elecraft.com • 831-763-4211
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LECRAFT PR10 10-Meter Receive Preamplifier
Owner’s Manual
Revision A, October 20, 2011
Copyright © 2011, Elecraft, Inc. All Rights Reserved
Introduction
The PR10 is a high-performance, low-noise 10-meter preamp that can be used with the Elecraft K3 or other
transceivers. It's especially well-suited for the K3, which has exceptional dynamic range, yet can benefit
from additional gain for 10-meter weak signal work. Adding the PR10 typically improves 10-meter MDS
to -143 dBm. The noise figure of the preamp itself is typically 0.5 dB.
The PR10 can be connected directly to the RX ANT IN/OUT jacks on the K3's KXV3 module (required),
where it can be switched in automatically by the transceiver when operating on 10 meters. A second pair of
jacks is provided on the opposite side of the PR10 to allow use of the K3's normal RX ANT IN/OUT signal
path when the preamp is not in use.
Power for the PR10 can be obtained from any 11 to 14 VDC supply. When used with a K3, the PR10 can
be powered from the 12 VDC accessory output. It can be strapped permanently ON, or it can be turned
on/off externally from an open-source/open-drain logic signal. In the K3 case, the DIGOUT1 control line
can be used (on the 15-pin ACC jack), since it is stored on a per-band basis.
The PR10 is housed in a rugged, custom-machined enclosure.
Figure 1. Elecraft PR10 Low-Noise 10-meter Receive Preamplifier.