Chris, The GR900 was manufactured for the UK and European markets. It appears to be similar to the RKR1225 repeater sold in the US, but I have never seen one close up to identify its contents.
Perhaps your best course of action is to contact Motorola-UK for assistance. A few years ago, someone who had a GR900 repeater tried to order the manuals through Motorola Parts here in the US, but was turned down. He finally arranged with a fellow Ham in the UK to order the manuals there and ship them to the US. 73, Eric Lemmon WB6FLY -----Original Message----- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Chris Sent: Sunday, April 20, 2008 3:34 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Motorola GR900 Repeater Help Hi all, I have recently invested in a UHF GR900 repeater and I am looking for any information on this unit. I would specifically like any re- programming info, ie leads, software to use etc etc. but any info would be greatfuly appreciated. Please feel free to email me off group if needed. With Kind Regards Chris