900MHz Amateur Radio Conversion
The Maxtrac/Radius will work just fine in the Ham band. But, you will need to make some modifications to the RF section as well as some of the programming in order to get it to work properly.
Before you go any further, you must be trying to convert a 900MHz radio, these would be models that have model numbers starting with either D27 or D37. If you have a D35 or D45 radio, then you have an 800MHz radio, and you will not be able to convert these radios to the 900MHz band.
You can convert the trunking D27 "B2" radio, and make it into a 2 channel conventional radio.
If you want the straight forward instructions on converting the radio, then follow this link. The modifications presented there should provide sufficient results for most people.
If you are looking for an explanation on how the Pin Shift signal works and which VCO's do what, then you will want to look at the Pin Shift explained page.
If you are a die hard and want full coverage on transmit and receive, there are going to be some more modifications involved. You will want to investigate these modifications which came from Michael Roche, AA2LS.
You can also get a little help with some of the tune-up instructions if you check here.
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