Essentially the Land and Marine based 8528 radio is the same. There are some basic differences however. Understanding these will make converting between the two easy. I have had a lot of requests lately for..." can you send me the amateur option for my 8528S.." As the Amateur Option profile I have is only for the Land Based Transceiver, installing it in a Marine radio will convert it.

Differences

1) The control head layout of some buttons varies slightly to allow for the different functionality of the two models.

2) EPROM is different. See below table for details

3) R76 on the RF Mixer board is not fitted to the 8528S. See the AM Mod Page for details of this resistor.
Removal of this resistor will not affect the radio in either configuration.

This table explains the different options available in the EPROM for both models

8528 (LAND) 8528S (MARINE) OPTION
Optional Optional (Note: I have never seen this option.
I don't have it - please don't ask)		 Amateur Use
Standard (Australian models only) Not Available RFDS Emergency Call
Optional Not Available Selcall
Not Available Standard Marine Emergency Call
Not Available Standard AM on 2182Khz
Standard Standard USB operation
Optional Optional LSB operation
Not Available Standard (requires channel programming) Switchable TX Power
Optional Optional Morse Key

Control Head Differences

Images of the two heads appear below. You can connect either head to either radio. What function the switch
performs will depend on what EPROM is fitted

8528 (LAND) 8528S(MARINE)
Call (Selcall/Telcall) Test (test of emergency function)
Not fitted Red Emergency Button (Used in conjunction with
TEST button)
Emgcy Call (RFDS - Australian models) Not Fitted
USB/LSB Mode (LSB crystal must be fitted
and channel must be programmed for option)		 TX Power (Channel must be programmed for option)
S'Call Mute (Mutes radio until valid selcall
received)		 AM Mode (2182khz only)
Display (Displays options programmed to
current channel etc..)		 2182 (Jumps to channel 1 -2182khz)

NOTE: The switch positions that are blank in either control head are still fitted to the switch membrane in
most cases. Pressing the panel where the button should be will operate the switch.

These are the LOCAL control versions. The remote version of the 8528S MARINE is identical to the local.
The Remote version of the 8528 LAND differs slightly in switch layout. I have seen three different colours in
this head (black, grey & brown). The grey & brown heads had slightly different switch labelling to reflect
functionality on the now defunct Telstra/OTC Radphone service in Australia.


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Since 6/12/2003

6/12/03