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To: Jon Koplik who wrote (14877)	9/11/1998 4:15:00 PM
From: Robert	Read Replies (1) \| Respond to of 152472

Jon, Mike, Here is some additional info on modes and bands that you may (or may not) find useful. I'm sure that if I get something wrong here someone on this thread will correct me. Band Class0 (800 MHz cellular) is divided into two systems (non-contiguous frequency blocks) called A (further divided into A, A' and A'') and B (further divided into B and B'). Airtouch owns system A and GTE owns system B. The system/carrier that you are currently using will always be displayed on your phones LCD (with an A or B) indicating whether you are roaming or not. The frequency allocation and ownership within Band Class0 is (as I'm sure you know) Identical for both analog (AMPS) and digital (CDMA). Your phone's display should also indicate which mode you are currently in. Band class1 (1900 MHz PCS) is divided into 5 blocks, designated as A through F, owned/licensed by different carriers Sprint PCS being one of them. Again if you have a PCS phone it should always indicate which block (A..F) you are currently using to let you know if you are roaming. Although most chipset and radio manufactures have created products that support both bands and both modes (often referred to as tri-mode just to confuse things), currently no handset is set up to do so. The QCP-2700 is the closes offering to a tri-mode phone by supporting both PCS and AMPS. The reason that you don't see any true tri-mode phones is that as of today there are no roaming agreements between the Band Class0 and Band Class1 carriers. Robert.