AOR AR3030 User Guide

Fitting the VHF converter to the AR3030 receiver (Rev 1.1)

The following information is applicable to both the VHF AM (airband) and VHF NFM
(marine converter). Only one converter may be fitted at a time (they are not intended to be
interchangeable). Both are in fact capable of all mode reception.

The fitting is recommended to be carried out in an experienced specialist receiver
workshop.

STEP 1

Check that the following parts have been included in the packaging (cable colours may
vary):

1. Fitting sheet (this page).

2. VHF converter usually wrapped in foil.

3. 3 cable ties and four screws.

4. 5 leads as follows:
A = Grey mini coaxial screened lead with a mini coaxial plug on one end

and bare tinned wire contacts on the other (approx 38cm).
B = Long grey screened lead with 2 pin connector on either end

(approx 27cm).
C = Short grey screened lead with 2 pin connector on either end

(approx 19cm).
D = Coloured blue / white cable (2 blue & one white) with 3 pin

connector on either end (approx 28cm).
E = Coloured purple / white cable (three purple & one white) with 4 pin

connector on either end (approx 20cm).

STEP 2

It is assumed at this stage that the receiver has been tested and is working normally.
Carry out the following on a “soft surface” to prevent marking the set in any way... use the
correct size cross head screwdriver to avoid slipping and damaging screw heads.

Switch Off the receiver, disconnect the power supply and aerials, external speaker etc.

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Remove the top case. There are FOUR COUNTERSUNK screws on the top and FOUR
CHEESE-HEAD screws on the side (two either side).

Remove the bottom case. There are FOUR COUNTERSUNK screws on the
top and FOUR CHEESE-HEAD screws on the side (two either side). Disconnect the two
pin speaker lead/connector from the bottom I.F. PCB (located adjacent to the external
speaker socket).

STEP 3

Remove the foil from the VHF converter making sure none remains which could cause a
short circuit.

Fit the VHF converter into the internal vacant position in the top right of the receiver next
to the RF & VCO PCBs. Refer to the diagram to ensure the correct orientation... the

coaxial connection J1 is in the top right corner.

The VHF converter PCB has six connectors J1, 2, 3, 4, 5 & 6 (refer to the diagram).

EXISTING LEAD

A 4 pin connector (3 blue wires and one white) already exists inside the receiver, usually
taped to the right hand side of the chassis (or held with a cable tie) near to the VHF
converter position. This lead is terminated on the CPU PCB. Connect this 4 pin lead to J6
of the VHF converter.

LEAD D

Connect lead “D” (3 wire blue/white) between the vacant 3 pin connector of the RF PCB
(see diagram) and J2 of the VHF converter.

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