The Southern California
222 – 225 MHz band plan has not been changed in several
years. Over that time the user demands have changed as new technologies
appear and interest in the older technologies fades. After measuring
actual activity on the 222 – 225 MHz band, Bob Dengler has
proposed changes to the current plan. These recommendations have
been reviewed by the 220SMA Coordination Board who came up with
additional important suggestions which have been incorporated
in the recommendation. At the time of this writing, there is one
outstanding issue which is awaiting measurements of band activity
on a specific frequency.
The recommendation’s major change is to add designated
frequencies for “automatic communications” modes (e.g.
IRLP, EchoLink, etc.) and to increase the number of available
link pairs. The number of available digital channels has been
reduced reflected reduced usage of this mode.
This presentation is intended to acquaint the amateur
radio community with the recommendation so the community’s
views can be aired before presentation to the 220SMA membership
for approval in October. After a short presentation, Bob will
respond to questions from the audience.
Contact information:
Robert J Dengler, NO6B
PO Box 412; Walnut, CA 91788-0412
Phone: (909) 396-0991
E-mail address: no6b@no6b.com
In addition to being a member of the 220SMA and SCRRBA,
Bob is the Chairman of the Two-meter Area Spectrum Management
Association (TASMA). Three years ago he led the effort to update
the Southern California two meter bandplan by conducting extensive
monitoring of the band & drafting a new bandplan largely based
on that monitoring. The resulting updated bandplan now incorporates
band segments for new technologies like internet linking on simplex
frequencies and wide-split in-band portable repeaters.
Bob has been a licensed ham for 29 years & has spent
most of that time on the VHF & UHF bands, building dozens
of repeater systems on the 2 meter, 220 & 440 MHz bands. He
has been the amateur technical & frequency coordinator for
all 21 City of Los Angeles Marathons.
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