purpose wrote:I have a phone that allows me to force analog and I have big differences in quality without a three watt amplifier.
Good! Hang on to that phone as long as you can - they are a dying breed! Most of the new CDMA phones (for example, from Verizon and Sprint) do not have any Analog AMPS in them.
purpose wrote:Is there a way to enhance digital signals?
No reasonable powered way - certainly not without causing interference with the towers and the transmit power will be reduced by the tower anyway. If you do not have improved reception, then the enhanced power transmission is kinda not as useful as it may seem.
In rural situations, your best bet is to get a good external antenna for your car (if your phone can have an external antenna attached) - with something like a 5 or 10dB gain at 850MHz and 1900MHz. Although these can be somewhat expensive (the 3dB ones are cheaper), these will definitely help with transmission and reception in rural areas and extend your range quite a bit.
By the way, a good antenna can give you as much gain as a cell booster - remember that a 3W amplifier is a bit more than 6dB above the nominal 0.6W of an AMPS handset!
purpose wrote:Will there be digital to replace the analog in remote areas? It sure does not work in parts of Wisconsin now.
Eventually, yes! The FCC Mandate on AMPS for Feb 2008 is only to allow the carriers to make a choice. In cities, AMPS will go away very quickly - particularly the AMPS from Cingular, since they need the spectrum for GSM.
In rural remote areas, where there is no digital, most carriers (like Verizon, US Cellular, Alltel) will continue to offer AMPS service till they finish their CDMA tower builds there. So, yes, you will be able to find AMPS service in those areas for quite a while, and the 3W amplifier will help for those to some degree.
When digital will make it to all remote areas is an open question! Analog AMPS was originally deployed in 1984 and it took almost 15 years to reach the farthest areas with cell coverage. CDMA began deployment pretty much in 1995 to 1997 (and the tower spacing requirement is more stringent - much smaller cells), so it may take a number of years yet!
Z