Why should the hams change at all? What is the driving force to make this
change in amateur radio? More repeaters, more users??... Even in the major
metro areas with all the supposedly available 2 meter pairs spoken for you can
go for days without hearing anything on these machines other than its ID. The
demand and use of repeaters is quite different than that of 30 some years ago
and a lot of that has to do with the influx of available, cheap and wide
coverage cell phone service and the internet.. Likewise when was the last time
you heard an autopatch?
The status on 440 and 220 is not that much different... 440 is suffering in
many area from Pave Paws and 220 is probably not as used due to the rarity of
equipment for this band, both transceivers and either off the shelf or easily
converted commercial repeaters.
Where the growth appears to be now is on 900 Mhz... No
ready made "amateur" equipment but a lot of cheap commercial gear easily
converted to ham use, if you ignore the band plan that the ARRL still claims is
valid and use a 25 Mhz split which most of the commercial equipment will easily
operate..... Hey and it's already "narrow" band.
As long as you don't mind the baby monitors and after all don't we now have the
primary allocation there?
My two cents worth...
Dave WB2FTX
----- Original Message -----
From: Andrew Seybold
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, February 14, 2010 9:59 PM
Subject: RE: [Repeater-Builder] Trbo to be DOA 2012 Say Hello to Tetra
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..
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