Elecraft PR6-10 Manual - Manual (Page 4)

Page 4 PR6-10 Receiver Preamplifier Owner’s Manua l
Figure 3. Jumper P2 Location.
Circuit Description
The schematic diagram of the PR6-10 is shown on the next page.
U1 is a Minicircuits PGA-103+ microwave monolithic integrated circuit (MMIC) that provides low noise
performance from HF to the lower microwave bands.
The input high pass filter (C1, C5, C6, L1 and L3) protects the PR6-10 from strong signals in the lower HF
range.
The output circuit is entirely resistive. The absence of reactive components helps assure stability.
The remaining circuitry is provided to switch the PR6-10 in and out of signal path and to switch power to
the PR6-10 on and off as required.
There are no factory or user adjustments.