Well-there are several companies which are making 12.5 KHz conversion kits for Mastr II's and other radios, where are not type accepted for commercial service but can be used for ham service, the big issue to me is that the commercial community has years to prepare for 12.5 Hz narrow banding (below 512 MHz) and the vendors have been building systems capable of both wide band and narrow band use for many years. How long will it take to get these same vendors to start providing both 25 and 12.5 and then 6. 25 KHz radios for ham service? You cannot expect hams to simply dump their existing radios and buy new ones-public safety and LMR operators have had a lot of time to prepare so we should have the same option.
The bad news is that wide band commercial radios are going to be plentiful and cheap in the next few years as commercial operators are forced to change to 12. 5 KHz channels, it would make more sense for us to be able to take advantage of these WB radios and stay wideband for a few more years than race to keep up the LMR folks. Andy W6AMS From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of j.cherry377 Sent: Sunday, February 14, 2010 6:49 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Trbo to be DOA 2012 Say Hello to Tetra The plan as I have it is to merge P25 and Trbo into a Tetra Product, for release in 2012, at which time Turbo will be discontinued and abandoned as its not true 6.25kc and wont comply with the new 2.5kc standard that all will have to start adhering to. Trbo takes up 12.5kc though it provides 2 voice paths, its not 6.25kc wide. My question is when will the 440 and 2m bands start talking about making a unified 6.25 kc divisible bandplan and apply it nationwide? They will have to do it so might as well get started talking about it. I know that there are a lot of people with 25/30 kc radios that are not going to care for hearing about this. A good first step is to design the layout in 12.5 kc steps for each band and start planning on at least going to 2.5kc deviation around that time..
