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CODAN 8525/8528 Repairs, Modifications and Info
These modifications and repairs are presented for learning
purposes only.
No responsibility is taken for any damage to equipment or otherwise.
Remember it is illegal to transmit on frequencies you are not licenced for.
The Codan 85xx series of SSB Transceivers consist of three models;
8525A - 99 channels, Transmit to 18Mhz, Remote or Local Control. Will accept an 8558 autotune
antenna with the
addition of an 8551 tuning box. This is a rather large
add on box, and could also be used with earlier 7727 series
radios. The 8551
tuning box is hard to find. These radios are best used with a tapped whip
antenna. Released in 1985
8525B - 99 channels,
Transmit to 24Mhz, Remote or Local Control. These radios are capable of
accepting an 8558
Autotune antenna. Earlier models used the 8551 tuning box,
later versions used option AD, an internal tuner.
8528 - 501 channels
plus 99 user programmable channels. Transmit to 24Mhz or 28Mhz with CB or
Amateur option.
Local or Remote Control. Radphone capability. These
radios will accept an 8558 antenna with option AD or the newer
9350
series of autotune antenna
A 8525B can be turned into an 8528 by simply changing the control head and using an 8528 EPROM.
Many options are available for these radios and include
USB/LSB operation
Amateur 28Mhz band
27Mhz CB
band
CW (Morse) Key
Selcall , up to 4 digits
Tone call
RFDS
emergency call (Australia only)
400 Watt PA (8528 only)
Marine versions of the 8525 and 8528 are available. They allow AM mode on 2182 Khz,
The Intenational Distress
Frequency.
The 8533 is simply a re-badged 8528 specifically sold as an 'outback radio-telephone (rad phone)
8525A User Manual 490k PDF
8525B User Manual 610k PDF
8528 User Manual Thanks to Jim
Operating Instructions View the card fitted to some radios.
Technical Service Manual for the 8525B & 8528
AM Mode Transmission How to make the 8528 Transmit in AM mode. Experimental only.
Lower Sideband Option How to fit the LSB crystal.
Conversion between land and marine based 8528's. Explains the differences. Read this if you want the AMATEUR OPTION in your 8525S (Marine)
Options A, TXE, TXD Their use and how they work.
Option M Fit a Morse key for CW operation.
Low Power Strap Required when EPROM with frequencies above 24Mhz is fitted. e.g. CB or Amateur
Microphone Wiring Diagram
Listen to a selcall transmission and response. wav file. May have to right click and select save as...
P-Channels Add, delete & change the 99 user frequencies without re-burning the EPROM. Also covers band scanning. 8528 only
Software & EpromsMay have to right click & select 'save target as......'
Programming Software For 8525A, 8525B, 8525S, 8528 & 8528S radios V3.23
8525A Eprom Profile 8525A profile - VKS 737, RFDS & ABC receive, with channel list
8525B Eprom Profile 8525B profile - VKS 737, RFDS & ABC receive, with channel list
8525S Eprom Profile - Not available here, sorry.
8528 Eprom Profile 8528 profile - RFDS, OTC & 27mhz CB. Now with channel list
8528 Amateur Profile - I have sent over 100 copies of this file to amateurs worldwide. Ask around for it. I am no longer able to send it out.
8528S Eprom Profile - Not available here, sorry.
Codan Australia Website Download .PDF files on Install tips, see the new NGT series.
Questions?? Please read the FAQ