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1991-03-26
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MSG # TR SIZE TO FROM @BBS DATE TITLE
2072 B$ 2022 ALL KB8FU NEOH 910324 What's happening... 220?
BID=8469_NO8M
R:910324/1254 @:W8GRG Shaker Heights, OH #:2072 Z:44120
R:910324/1202 @:WA8BXN.OH.USA.NA Kirtland, OH #:41282 Z:44026
R:910324/1645z @:NO8M.OH.USA.NA North Olmsted #:8469 Z:44070
I guess that the writing is on the wall as far as the 220-222 MHz portion
of the 1-1/4 meter band.
Looking at the "old" band plan in a repeater directory, all but 30 KHz of
the remaining 3 MHz off 220 was set aside for FM repeaters and FM simplex.
Obviously 30 KHz is not enough room for all of the EME, SSB, CW and
link stuff to fit into and a reshuffling of the top 3 MHz would be needed.
There are presently only 27 FM repeater pairs and about two dozen simplex FM
frequencies, about a fourth of which are being used for packet.
What will happen to the existing users of this band space?
Will existing repeaters stay at their present frequencies, or will they
need to go through the time and expense of re-coordination and
crystal/duplexer changes?
What about coordinated 220 repeaters that have changed site and no longer
appear in the repeater directory? These machines are still on the air
and quite well used. For one reason or another, they just don't show
up in the ARRL repeater directory.
Will the channel spacing change? If so, can an Icom IC-3AT be reworked to
handle 5 KHz spacing if that comes to pass?
I suppose that these things were taken into account when the FCC decided
to take away 40 percent of the band. I am not sure who took them into
account... Maybe the ARRL, the repeater coordinators.. But for sure
someone must have given them some thought and can offer solutions.
(Of course, loosing the 420 MHz area of 70 centimeters left no alternate
means of operation for the fast scan ATV repeaters. There is no longer enough
band space to have two fast scan transmitters up at the same time there!
I bet this isn't a problem for those well south of line A.)
There must be some solutions. There just have to be!!!
de Bill, KB8FU @NO8M.OH.USA.NA
MSG # TR SIZE TO FROM @BBS DATE TITLE
2088 B$ 1926 ALL N8AUH NEOH 910324 Re: Msg 8469 & 220 MHz !
BID=8481_NO8M
R:910324/1841 @:W8GRG Shaker Heights, OH #:2088 Z:44120
R:910324/1808 @:WA8BXN.OH.USA.NA Kirtland, OH #:41313 Z:44026
R:910324/2237z @:NO8M.OH.USA.NA North Olmsted #:8481 Z:44070
The April issue of QST has an article on page 70 (The World Above 50
MHz) which presents a proposed band plan for 222-225 MHz. This is not
a final plan, but has been offered for review and comments . . . .
PROPOSED 222-225 MHZ BAND PLAN
frequency operations
222.000 - 222.100 CW only
222.100 - 222.200 SSB, CW
222.200 Calling frequency
222.200 - 222.300 SSB, AM
222.300 - 222.325 Beacons
222.325 - 222.400 SSB, AM, PM, data (6 kHz bandwidth)
222.400 - 223.400 FM Repeater Inputs*
223.400 - 223.500 FM Simplex
223.500 FM Simplex calling frequency
223.500 - 223.700 Packet (AFSK FM)
223.700 - 224.000 High-speed digital (100 kHz/Chanl)
224.000 - 225.000 FM Repeater Outputs
* (Current 1.6 MHz separation retained)
This Plan allocates some 900kHz for non-FM activity. The other 2.1MHz
is specified FM operation (repeaters & simplex).
The column concludes that everyone is invited to submit suggestions or
ideas to the VHF Repeater Advisory Committee and/or VHF/UHF Advisory
Committee member in your Division: These are all listed on Page 65 of
April QST.
Solutions to the shortfall of frequency will come about through time
and exercise of patience and cooperation by all of us. It may not be
fun, nor necessarily easy, but when faced with a challenge such as the
FCC grab of our spectrum space, we must learn to be more efficient so
as to succeed: Perhaps beyond even our own hopes and expectations.
73, Dave - N8AUH @ NO8M.OH