DRAKE R8B Owner's Manual download pdf

VHF CONVERTER INSTALLATION INSTRUCTIONS for R8 Series Receivers 1

CAUTION:

Refer installation to qualified service technician to prevent personal injury or damage to the equipment.

Prior to starting installation of your new VHF converter,

carefully unpack the converter PC board assembly and

its associated cables and mounting hardware. You will

need to use a Philips screwdriver during installation.

NOTE: A magnetized screwdriver facilitates the removal

and installation of screws in the procedure that follows.

Identify the following items:

(1) #1001590 VHF Converter Assembly

(1) #3711160 Coaxial Cable, 8" Length

(1) #3711168 Coaxial Cable, 26" Length

(1) #2707293 6-Conductor Cable,17" Length

*(1) #4350171 Retaining Bracket

*(1) #3320244 Screw 4-40 x 1/4" Pan Head Philips

*NOTE: Retaining Bracket and Screw are already

installed in an R8A/R8B receiver. Install the VHF

Converter assembly as follows:

DISCONNECT THE RECEIVER FROM

THE AC POWER SOURCE!

1) Remove the top cover from the receiver by removing

(5) #6-32 x 1/4" BLACK Pan Head Philips screws.

Retain the cover and screws for reassembly.

2) Remove the bottom cover from the receiver by

removing (6) 4-40 x 1/4" Pan Head Philips screws.

Retain the cover and screws for reassembly.

3) Reposition any cables at the rear panel, as

necessary, to allow the converter assembly to fit at the

rear panel wall. Dress these cables away from the

SO-239 antenna input connectors and gently pull any

excess cable toward the bottom compartment of the

receiver chassis. On the R8A/R8B, the VHF Converter

Retaining Bracket is already installed in the radio,

holding the right side of a front panel area board shield.

Remove this bracket by removing the #4-40 x 1/4"

screw at the base of the bracket. Retain the bracket

and screw for later reassembly. Position the VHF

converter assembly into the chassis as illustrated

(Figure 1). The board mounted components should

face toward the outside edge of the receiver, with the

larger of the two component side shields toward the

rear panel of the receiver. Align the two tabs into the

slots located on the rear panel of the receiver.

Locate the Retaining Bracket and position to the edge

of the VHF Converter assembly as shown. On the

R8A/R8B be sure to re-insert the (front panel) board

shield into the slot on the retaining bracket when

installing the VHF Converter. Use the supplied #4-40 x

1/4 Pan Head Philips screw to secure the bracket to the

receiver chassis (Figure 2).

4) Identify the 6-conductor cable (17" length) and plug it

onto the VHF converter assembly connector header

(Figure 1). Be careful to observe that the RED

conductor end of the cable connector is oriented as

shown in Figure 1.

5) Route the free end of the 6-conductor VHF converter

cable vertically down behind the front panel (near the

Volume Control) to the board assembly exposed by

removal of bottom cover. See Figure 1.

BRACKET

SCREW 4-40 X 1/4"

PAN HEAD Philips

SHIELD

FIGURE 2

SHIELD

REAR

PANEL

VHF CONVERTER ASSEMBLY

BRACKET RED WIRE TABS

FRONT

PANEL

FIGURE 1, RECEIVER SIDE VIEW 6-CONDUCTOR CABLE

1 2 3 4

Summary of Contents

Page 1 - THE AC POWER SOURCE!

VHF CONVERTER INSTALLATION INSTRUCTIONS for R8 Series Receivers 1CAUTION: Refer installation to qualified service technician to prevent perso

Page 2

2 Installation, continuedFIGURE 3, BOTTOM VIEW7) Connect the supplied 26" "REF" coaxial cable#3711168 to the 'REF OUT&a

Page 3 - Receiver Owner's Manual

Installation - Unit System Check 3The VHF Converter electrical installation is complete atthis point. Prior to applying AC power to the recei

Page 4 - 4 Specifications

4 SpecificationsSPECIFICATIONS:Frequency Range:Antenna Impedance:Sensitivity - SSB, CW (+10dB S+N/N):Sensitivity - AM (+10 dB S+N/N

DRAKE R8B Owner's Manual

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DRAKE R8B Owner's Manual

Browse online or download Owner's Manual for Receiver DRAKE R8B. DRAKE R8B Owner`s manual User Manual

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