ELECRAFT KRX3 Instrucciones de operaciones descargar pdf (Pagina 34)

Figure 41. Mounting the KPBF3 Board.

Locate the subreceiver RF module top cover. It has a label with places to record the bandwidth (BW), and

frequency offset (FRQ) of each filter. Copy the information from Table 1. Note that the filters read right to left

on the label, just as they were installed on the pc board. Place a check mark by Sub (for subreceiver) on the

label. Use pencil in case you change your filters later. The label also has a row for Gain. This is a value you can

determine after your installation is finished. It is a value set in the K3’s MENU to adjust the overall gain for

each roofing filter so the audio remains constant when switching from one filter to another. Making this

adjustment is described under Filter Loss Compensation in your owner’s manual.

Place a 7/8” (22 mm) unthreaded sleeve over each of the long screws so they rest against the top of the

circuit board (see Figure 42), then place the top cover over the assembly and adjust its position so the edge of

the top fits inside the bottom and rests against the KRX3 main board on all sides. The long screws will pass

through holes in the top cover. Secure the top with knurled nuts tightened only enough to hold the cover in place

so it isn’t loose.

Figure 42. Installing the Shield Top.

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ELECRAFT KRX3 Instrucciones de operaciones Pagina 34