[arm-allstar] picking frequency

[Doug Crompton]

I was not aware of that. Just another eroding of our spectrum. Slowly
taking it away. I guess we deserve it because we don't use it. 420-430 is a
wasteland in most areas. It could and should be used for point to point
moderate speed data. 2.4G and 5G just don't make it in many areas.

This is basically a northern border line. The large majority of the US is
not effected.

(30)Line A. Begins at Aberdeen, WA, running by great circle arc to the
intersection of 48° N, 120° W, thence along parallel 48° N, to the
intersection of 95° W, thence by great circle arc through the southernmost
point of Duluth, MN, thence by great circle arc to 45° N, 85° W, thence
southward along meridian 85° W, to its intersection with parallel 41° N,
thence along parallel 41° N, to its intersection with meridian 82° W,
thence by great circle arc through the southernmost point of Bangor, ME,
thence by great circle arc through the southernmost point of Searsport, ME,
at which point it terminates.


*73 Doug*

*WA3DSP*

*http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*


On Thu, Mar 28, 2019 at 2:43 PM C B <harvard5362 at yahoo.com> wrote:

> 47cfr 97.301
> (m) *In the 70 cm band:*
> (1) No amateur station shall transmit from north of Line A in the 420-430
> MHz segment. See §97.3(a) for the definition of Line A.
> (2) Amateur stations transmitting in the 420-430 MHz segment must not
> cause harmful interference to, and must accept interference from, stations
> authorized by the FCC in the land mobile service within 80.5 km of Buffalo,
> Cleveland, and Detroit. See §2.106, footnote US230 for specific frequencies
> and coordinates.
> (3) Amateur stations transmitting in the 420-430 MHz segment or the
> 440-450 MHz segment must not cause harmful interference to, and must accept
> interference from, stations authorized by other nations in the fixed and
> mobile except aeronautical mobile services
> For exampel
> KNID397 - ERIE, COUNTY OF has frequencies in the 420 - 430 band
>
>
>
> ------------------------------
> *From:* Doug Crompton via ARM-allstar <arm-allstar at hamvoip.org>
> *To:* ARM Allstar <arm-allstar at hamvoip.org>
> *Cc:* Doug Crompton <wa3dsp at gmail.com>
> *Sent:* Thursday, March 28, 2019 9:59 AM
> *Subject:* Re: [arm-allstar] picking frequency
>
> Ron,
>
> I am not aware of any US reassignment of the 420-430 part of the band. ITU
> region 2 has that entire spectrum. We are however secondary to the band to
> the military and in some areas near military installations power is
> limited. Around PAVE-PAWS military radar sites there is generally a 100
> mile 50 watt limit.  I know there are coastal sites in MA and CA but not
> aware of other states.
>
>
> *73 Doug*
>
> *WA3DSP*
>
> *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
>
>
> On Thu, Mar 28, 2019 at 10:44 AM "Ron Gilson via ARM-allstar" <
> arm-allstar at hamvoip.org> wrote:
>
> > Depending upon your location, some areas have reallocated the 420 to 430
> > part of the band to public safety.  You might consider using a simplex
> > channel, narrow band and 12.5 khz between the normal channels.  An
> example
> > would be 431.0625mhz.  Commercial two way has been doing this for 20+
> > years.
> > WA2WWK  Ron
> >
> > On Wed, Mar 27, 2019 at 10:22 PM "Tony Ross via ARM-allstar" <
> > arm-allstar at hamvoip.org> wrote:
> >
> > > On 3/27/19 5:50 PM, "Fred Hillhouse via ARM-allstar" wrote:Greetings,
> > > > I am interested  in hearing how someone picks the frequency or
> > > frequencies
> > > > of an attached radio.
> > > >
> > > > I picked up a Baofeng BF-888 for the purpose of adding to my node.
> > >
> > > Keep the Tx power at the lowest level. Choose a frequency and monitor
> > > for several days to determine local traffic. Consider your mobile
> > > operations on your chosen frequency and listen elsewhere before Txing.
> > > Use a PL tone. Review Part 97 §97.101 et.al..
> > > _______________________________________________
> > >
> > > ARM-allstar mailing list
> > > ARM-allstar at hamvoip.org
> > > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> > >
> > > Visit the BBB and RPi2/3 web page - http://hamvoip.org
>
> > _______________________________________________
> >
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> > ARM-allstar at hamvoip.org
> > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> >
> > Visit the BBB and RPi2/3 web page - http://hamvoip.org
> _______________________________________________
>
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>
>
>