Date: Sat, 27 Nov 93 04:30:14 PST
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Subject: Info-Hams Digest V93 #1393
To: Info-Hams
Info-Hams Digest Sat, 27 Nov 93 Volume 93 : Issue 1393
Today's Topics:
ARLD063
Cross-band 2m/220mhz repeaters?
Daily Summary of Solar Geophysical Activity for 19 November
Jim Liston
What's a trunked system?
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----------------------------------------------------------------------
Date: Sat, 20 Nov 1993 05:58:51 -0700
From: dog.ee.lbl.gov!agate!library.ucla.edu!news.mic.ucla.edu!unixg.ubc.ca!nntp.cs.ubc.ca!alberta!nebulus!ve6mgs!usenet@network.ucsd.edu
Subject: ARLD063
To: info-hams@ucsd.edu
SB DX @ ARL $ARLD063
ARLD063 DX news ZCZC AE89
QST de W1AW DX Bulletin 63 ARLD063 From ARRL Headquarters
Newington CT November 18, 1993
To all radio amateurs
Thanks to Bob, W5KNE; QRZ DX; Tedd, KB8NW; the OPDX
PacketCluster Network; John, W2GD; and Frank, OH2LVG, for
the items in this week's bulletin.
PETER ONE ISLAND. Here are three brief items of interest.
Tony, WA4JQS, reports all equipment for the DXpedition has
been crated. Permission has been secured to operate /MM
while enroute to the island. This may be the first-ever
satellite operation from Peter One.
SINGAPORE. James, 9V1YC, is on around 7005 kHz between
1045 and 1115z every day looking for North and South
American stations. 9V1ZE has been worked on 7005 kHz at
1218z.
BOTSWANA. Arno, OH7XM, plans to be active until December
5 as A25/OH7XM. Listen for him in the CQ WW CW Contest as
a 40 meter single category as A22MN. QSL via OH7XM.
UNITED ARAB EMIRATES. Members of the Dubai Men's College
of Higher Technology are operating their new club station
A61AF. They have equipment for HF, VHF and satellite
operations and were heard in the CQ WW SSB Contest. QSL
to Dubai Mens College, PO Box 15825, Dubai, UAE. Only
cards dated 3 August 1993 and after are good for DXCC.
BENIN. TY1PS was heard calling CQ on 14083 kHz RTTY
around 2300z, with very few takers. He was also heard on
21085 kHz at 1850z.
CAMBODIA. Sanyi, XU7VK, was on 7065 kHz recently around
1230z working YBs and DUs on SSB. He runs a KW into a
wire antenna. QSL via HA0HW.
GAMBIA. Gary, C53HG, is active on 75 meters once or twice
a week. He hangs around 3795 kHz at 0500z, though has been
heard there as late as 0700. Also listen for him on 15
meters between 1800 and 1900z, and then on 20 meters
between 2000 and 0100z.
MOZAMBIQUE. C91AJ has been worked on AO13 at about 0255z.
QSL via CT4RM.
BOSNIA HERZEGOVINA and CROATIA. Carl, OH6XY, team leader
of RadioTeam Finland, is serving on the UN High Command on
Refugees in the former Yugoslavia. His stay is through
November 1994 and can be worked as either 9A/OH6XY or
4N4/OH6XY.
NETHERLANDS ANTILLES. Carl will also be on from Curacao
during the CQ WW CW Contest as PJ9Y as a 40 meter single
op entry. He will be active before and after the contest
period with a bonus of some six meter operations.
Jukka, OH3GZ, is Carl's QSL manager and has the logs for
the following calls,
9A/OH6XY, ZA/OH6XY, ZA2A, PJ2/OH6XY, PJ9Y, 4N4/OH6XY and
T9/OH6XY.
ARUBA. P40W will be activated November 22 to 30 by John,
W2GD, including the CQ WW CW Contest on the 27th and 28th.
Outside the contest, John will be active on the WARC bands
and on 160 meters on the hour after dark. QSL to N2MM.
FRENCH SAINT MARTIN. Members of the North Jersey DX
Association will be active as FS/W2QM from December 1
through 8. They will operate 160 through 10 meters with
SSB and CW. QSL to W2QM.
NNNN
/EX
------------------------------
Date: Tue, 23 Nov 1993 19:47:42 GMT
From: butch!news@uunet.uu.net
Subject: Cross-band 2m/220mhz repeaters?
To: info-hams@ucsd.edu
> How many cities and where? I'm curious.....
I know denver has 1 2/220 link.. 223.98 to 147.225..
------------------------------
Date: Fri, 19 Nov 1993 21:32:26 MST
From: dog.ee.lbl.gov!agate!library.ucla.edu!news.mic.ucla.edu!unixg.ubc.ca!nntp.cs.ubc.ca!alberta!nebulus!ve6mgs!usenet@network.ucsd.edu
Subject: Daily Summary of Solar Geophysical Activity for 19 November
To: info-hams@ucsd.edu
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY
19 NOVEMBER, 1993
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
(Based In-Part On SESC Observational Data)
SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 19 NOVEMBER, 1993
------------------------------------------------------------
!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 323, 11/19/93
10.7 FLUX=101.1 90-AVG=094 SSN=059 BKI=3622 2333 BAI=020
BGND-XRAY=B1.4 FLU1=9.4E+05 FLU10=1.3E+04 PKI=3622 3433 PAI=020
BOU-DEV=031,154,013,017,015,029,023,021 DEV-AVG=037 NT SWF=00:000
XRAY-MAX= B9.8 @ 2003UT XRAY-MIN= B1.2 @ 1737UT XRAY-AVG= B2.4
NEUTN-MAX= +002% @ 2320UT NEUTN-MIN= -002% @ 1745UT NEUTN-AVG= -0.1%
PCA-MAX= +0.0DB @ 2355UT PCA-MIN= -0.1DB @ 2000UT PCA-AVG= -0.0DB
BOUTF-MAX=55375NT @ 0358UT BOUTF-MIN=55334NT @ 1842UT BOUTF-AVG=55350NT
GOES7-MAX=P:+000NT@ 0000UT GOES7-MIN=N:+000NT@ 0000UT G7-AVG=+063,+000,+000
GOES6-MAX=P:+128NT@ 1654UT GOES6-MIN=N:-072NT@ 1044UT G6-AVG=+087,+019,-041
FLUXFCST=STD:105,105,110;SESC:105,105,110 BAI/PAI-FCST=010,010,015/010,012,015
KFCST=2233 3221 2233 4321 27DAY-AP=010,009 27DAY-KP=2342 2232 4222 1221
WARNINGS=*SWF
ALERTS=**245STRM:0622-0733UTC
!!END-DATA!!
NOTE: The Effective Sunspot Number for 18 NOV 93 is not available.
The Full Kp Indices for 18 NOV 93 are: 2- 1- 1o 1o 4+ 5+ 4o 3+
SYNOPSIS OF ACTIVITY
--------------------
Solar activity was low. Region 7618 (N07W19) continues
to be the most impressive region on the disk. Overall, the
Region has been stable the past 24 hours. Region 7620 (N04E57)
appears stable as well.
STD: A delta configuration continues to exist in Region 7618.
Solar activity forecast: solar activity is expected to be
low to moderate with Region 7618 expected to produce C-class
and possibly M-class activity.
STD: A new region is approaching the northeast limb. Recent
Yohkoh x-ray imagery of this area suggests a possible eruptive
region may be rotating into view shortly. This supposition is
strengthened by NSO observations of enhanced (moderate) Ca XV
limb emissions at this region. NSO plots of these emissions,
as well as pseudo-full-disk maps are available at the anonymous
FTP site: ftp.uleth.ca (previously known as xi.uleth.ca) in the
directories "pub/solar/Corona/Scans" and "pub/solar/Corona/Maps".
There may be some additional Ca XV emission intensification
over the next 24 hours from this area of the northeast limb.
Recent optically uncorrelated long-decay B and C-class x-ray
activity may be originating from this site. Another Yohkoh
x-ray insert has been appended to this report showing this new
limb source of x-ray emissions.
The geomagnetic field has been at quiet to major storm
levels at middle latitudes and quiet to severe storm levels
at high latitudes. Yesterday's disturbance continued through
06Z today with active to storm level conditions. Since then,
the field has been mostly quiety to active with some brief storm
levels at high latitudes.
Geophysical activity forecast: the geomagnetic field is
expected to be mostly unsettled. Recurrence effects may
increase activity sometime late on day three.
Event probabilities 20 nov-22 nov
Class M 60/60/60
Class X 10/10/10
Proton 10/10/10
PCAF Green
Geomagnetic activity probabilities 20 nov-22 nov
A. Middle Latitudes
Active 20/10/45
Minor Storm 10/05/15
Major-Severe Storm 05/01/05
B. High Latitudes
Active 40/10/65
Minor Storm 05/05/05
Major-Severe Storm 01/20/01
HF propagation conditions became occasionally below-normal
for the upper-middle to polar latitude paths during the local
night sector of 19 November. Most other regions experienced
near-normal propagation. Conditions are expected to gradually
improve on 20 and 21 November. Additional minor signal
degradation may be observed again over the higher latitude
paths on 21 November in response to recurrent activity. At the
present time, no significant changes are expected over the next
three days. SWF activity is still a good possibility over
sunlit paths.
COPIES OF JOINT USAF/NOAA SESC SOLAR GEOPHYSICAL REPORTS
========================================================
REGIONS WITH SUNSPOTS. LOCATIONS VALID AT 19/2400Z NOVEMBER
-----------------------------------------------------------
NMBR LOCATION LO AREA Z LL NN MAG TYPE
7618 N07W19 339 0750 DKI 09 038 BETA-DELTA
7620 N04E57 263 0000 AXX 01 001 ALPHA
REGIONS DUE TO RETURN 20 NOVEMBER TO 22 NOVEMBER
NMBR LAT LO
NONE
LISTING OF SOLAR ENERGETIC EVENTS FOR 19 NOVEMBER, 1993
-------------------------------------------------------
BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP
1625 1625 1626 280
POSSIBLE CORONAL MASS EJECTION EVENTS FOR 19 NOVEMBER, 1993
-----------------------------------------------------------
BEGIN MAX END LOCATION TYPE SIZE DUR II IV
19/ 1845 2004 2051 LDE B9.8 126
INFERRED CORONAL HOLES. LOCATIONS VALID AT 19/2400Z
---------------------------------------------------
ISOLATED HOLES AND POLAR EXTENSIONS
EAST SOUTH WEST NORTH CAR TYPE POL AREA OBSN
48 S34W42 S37W62 S08W74 S07W70 024 ISO NEG 012 10830A
49 N30E18 N20E08 N30E04 N34E11 316 ISO POS 003 10830A
SUMMARY OF FLARE EVENTS FOR THE PREVIOUS UTC DAY
------------------------------------------------
Date Begin Max End Xray Op Region Locn 2695 MHz 8800 MHz 15.4 GHz
------ ---- ---- ---- ---- -- ------ ------ --------- --------- ---------
18 Nov: 0349 0358 0404 B7.3
1135 1230 1303 B5.1 SF 7618 N08E02
1323 1332 1347 C1.6 SF 7618 N09E01
1522 1525 1538 SF 7618 N07W03
1654 1659 1707 C1.5
1658 1658 1710 SF 7618 N06W03
1928 2115 2155 C1.4
REGION FLARE STATISTICS FOR THE PREVIOUS UTC DAY
------------------------------------------------
C M X S 1 2 3 4 Total (%)
-- -- -- -- -- -- -- -- --- ------
Region 7618: 1 0 0 4 0 0 0 0 004 (57.1)
Uncorrellated: 2 0 0 0 0 0 0 0 003 (42.9)
Total Events: 007 optical and x-ray.
EVENTS WITH SWEEPS AND/OR OPTICAL PHENOMENA FOR THE LAST UTC DAY
----------------------------------------------------------------
Date Begin Max End Xray Op Region Locn Sweeps/Optical Observations
------ ---- ---- ---- ---- -- ------ ------ ---------------------------
NO EVENTS OBSERVED.
NOTES:
All times are in Universal Time (UT). Characters preceding begin, max,
and end times are defined as: B = Before, U = Uncertain, A = After.
All times associated with x-ray flares (ex. flares which produce
associated x-ray bursts) refer to the begin, max, and end times of the
x-rays. Flares which are not associated with x-ray signatures use the
optical observations to determine the begin, max, and end times.
Acronyms used to identify sweeps and optical phenomena include:
II = Type II Sweep Frequency Event
III = Type III Sweep
IV = Type IV Sweep
V = Type V Sweep
Continuum = Continuum Radio Event
Loop = Loop Prominence System,
Spray = Limb Spray,
Surge = Bright Limb Surge,
EPL = Eruptive Prominence on the Limb.
SPECIAL INSERT: CURRENT X-RAY EMISSIONS FROM THE JAPANESE YOHKOH SPACECRAFT
===========================================================================
19 November 1993, 03:30 UTC
North
........ .............. ... .
........... ..,,,,,,,,,,....,,,::,,,,,,,,,,,,,,......
...........,,,,,,,,,,,. ...,,,,,,,,,,,,,,::::,::::::;;:::::,,,.....
....,,,,,,,,,:::::::,.. .....,,,,,,,,,,,,,,,,,,,,,,,,,::;;;:::,,,.....
..,,,,:::::::::;;::,. .. .,.....,,,,,,,,,,,,,,,.....,,,,:,,:;;:::,,,....
,:::::;;;;;;;;-;::,.. ... ..,,,,,,,,,,,,,,,,,,,,,,,,,,,,,:::::;;:::,,,,......
:::;;--------;:::::,. . .. ..,,,,:::::::::::,:,,,,,,,,,,,::::::::;;;:::,,,,...
::;;---+++++:,,,::,,. . ....,::;;;;;;-;;:::::,,,,,,,,::::::::::;;;;;::,,,..
:;;--++|||+;:,,,,:,,.... ......,::;;-+++++-;;;;:::,,,,,::::::::::;;;--;;::,,,.
:;;-+|!!!|;::::,,,,,,......,...,,:::;-+|!!!|---;;;::::::::;;;;::::;;;;;-;;::,,,
;-++|!232-;;:::,,,,,,,,,,,,,,,,,:-!!|-;-142!+++--;;;;;::::;;----;;;:::;--;;;:::
|!!!!24*|--;;::,,,,,,,,,,,,:::::::-++-;;|3431!|+;;;;;;:;:::;;:;;;;;;;;;-+--;;;:
-+|!1121-+---;:,,,,,,,,,,,,,:::::::;;---+!4##41+---;;:;::;;;--::::;;;;;;+|+--;;
-+|!!121+-;;-;,:,,,,,,,,,,,,:::::::;;;-+!2@@@#31+--;;;;;;;;+-;:;::;;;;;;+1!|+-;
+||||!3*1-;;;:,,,,,,,,,,,,,,,,:::::;;;-+|13##42!++-----;;;;;;;:;;:;;-----1!++-;
-++++++|+;:::,,,,,,::,,:,,,,,::,,::;;-+||!1111|++----;;;;;;;;;::;;;;;--;-||+-;;
:;-----;:::,,,,,,,,:,,,,,.,::,,,,:::;;;-++|||+-;+-;;;;;;;;--;;;;;;;;;--;-+---;;
,:--++++-:,,,,,,,,,,,,,,,,,,,:,,,:::::;;;;;;;;;;--;:::;;;;--;;;;;;--;;;;++--;;;
,:;;---+-,,,,,,,,,,,,.,,,,,,,,,.,,,:::::::::::-+++;;;;;;;-;;:::;;;;::::;|!|+-;:
,,::;;;-;,,,,,,,,,,,,,,,,:::::,,,,,,,,,,,,,,::::;::::;;;-;:::::::,,,::;|!||+-;:
.,,:::;;;:::,,,,,,,,,,,,,,:,,,,,,,..,,,,,,:::::;::::;;;;;;;::::,,,,::;+!!|+--;:
..,,::;;;-;::,,,,,,,,,,,,,,,,,,,,....,,,,::::,,:::;;;;;:;;;::,.,,,::;|||++--;;:
..,,,::;;;--::,,,,,,,,,,,,,,....,,.....,,,,,,,,,,,:::;;;;;:,..,:;;;;+||++--;;::
..,,:::;;---;,,,,,,,,,,,,,.,,.,.,,,.......,,,:,,,,,:::::,,..,,:;--+++++-;;;::,
..,,,:::;;;;;;:,,,,,,,.,,,.....,,,.... .,,,,,,..,,.......,,:--++----;;:::,,
..,,,,,::::;;;;:,::,,,,,,.,..... .. . ...,. ....,,;----;;;;;::,,,,,
.......,,,::::::::,.......... .. . .,,;----;;;:::::,,,....
.. ......,,,,,:::::,. .. .. ....,:;------;;::::,,,,,.....
......,,,,,,,,,,... ..,:;;;----;;;;::::,,,,,...
..............,,,,..........,,,,,,::::::;::::::::,,,,,...
..... .. ... .. .......,,,,,,,,,,,,,,.....
. ........... .
South
KEY: East and west limbs are to the left and right respectively. Emission
strength, from minimum to maximum are coded in the following way:
[space] . , : ; - + | ! 1 2 3 4 * # @
Units used are arbitrary, for illustrative purposes. Get "showasc.zip"
from "pub/solar/Software" at the anonymous FTP site: xi.uleth.ca
(IP # 142.66.3.29) to view these images on VGA screens.
** End of Daily Report **
------------------------------
Date: Tue, 23 Nov 1993 17:56:51 GMT
From: nntp.ucsb.edu!library.ucla.edu!europa.eng.gtefsd.com!avdms8.msfc.nasa.gov!sol.ctr.columbia.edu!usenet.ucs.indiana.edu!silver.ucs.indiana.edu!djadams@network.ucsd.edu
Subject: Jim Liston
To: info-hams@ucsd.edu
Greetings! Could Jim Liston (who sold me the tr-3600a) please e-mail
me? I have a question about the rig which the manual doesn't cover,
and I'm hoping you may know the answer. Thanx.
Dave
David J Adams, N9UXU Internet: djadams@silver.ucs.indiana.edu
Amiga User and Flow Cytometry Advocate
Looking for a mobile 2m and/or 70cm rig
Conure Society of America. "Push the button Frank..."
--- -. .-.. -.-- .- -- .. --. .-
------------------------------
Date: Thu, 25 Nov 93 19:36:36 CST
From: hp9000.csc.cuhk.hk!uxmail!hk.super.net!psinntp!psinntp!sunic!EU.net!howland.reston.ans.net!usenet.ins.cwru.edu!eff!news.kei.com!news.oc.com!utacfd.uta.edu!rwsys!scilab!@munnari.oz.au
Subject: What's a trunked system?
To: info-hams@ucsd.edu
trier@odin.ins.cwru.edu (Stephen C. Trier) writes:
> Every now and then, I see references to "trunked systems" popping up in
> the rec.radio.amateur groups. Just what is a trunked system?
Ahoy, Stephen!
I would imagine that some of the implementation details vary from
implementation to implementation, but here in Dallas/Ft Worth there are a
number of different systems in use. Here's how they work in common.
A series of frequencies are assigned to an agency or municipality. All
those frequencies are programmed into all the radios for the service, and
a single channel acts as a control frequency. That control frequency has
a continuous data stream being received by all radios in the service. It
instructs all the radios as to which frequency corresponds to a given
"channel".
These channels are "logical channels". Unlike traditional radio systems,
there is not a permanent correpondence between "frequency" and "channel."
For instance: Here in Arlington, there is a common data frequency and six
or so voice frequencies. However, the fire department radios have a dozen
or so channels (about twice the number of frequencies). At any given moment,
the data channel assigns frequencies to the radios as they are needed.
Much like a computer network, this allows the system to provide maximum
use of the spectrum. But, much like the phone system, it relies on the
assumption that not all channels or "paths" are in use at a given time.
To the disappointment of many scanner users, some trunked systems switch
frequencies very quickly and can be difficult to monitor, particularly if
"good listening" systems are shared with "boring systems." The switching
rate of systems in the Dallas/ Ft Worth metroplex vary from about once an
hour (as needed for demand on channels) to once per transmission. To top it
off, GE trunked systems often have "scanner defeat" features. For instance,
one system in the area is supposed to be playing tone sequences after every
transmission (while the data-switched radios move to a new frequency).
So all the scanners are locked onto these silly "doorbell" tones while all the
good stuff is going on somewhere else. However, there are some folks selling
kits or radio mods to defeat the squelch lock on those tones.
Hope that helps some.
Cheerio!
----------------------------------
Carter R. Bennett, Jr. [Scientist]
carter@scilab.lonestar.org
KI5SR
------------------------------
Date: Wed, 24 Nov 1993 20:40:48 GMT
From: netcomsv!netcom.com!greg@decwrl.dec.com
To: info-hams@ucsd.edu
References <arog.753969080@BIX.com>, <1993Nov23.113409.29442@ke4zv.atl.ga.us>, <LEVIN.93Nov24114340@powell.bbn.com>asa.gov
Subject : Re: CONELRAD-what was it?
What a lot of people don't remember is that hams were required to respond
to Conelrad alerts by going off the air. To this end, they were required
to monitor a local broadcast station at all times while on the air, in
order to determine if there was an alert. Some old ARRL handbooks that
I have contain ads (there used to be a really neat ad section in the
back, with things like J.W. Miller, and so on) for Conelrad alert
monitors, some of which contiained features that would shut down the
plate current in event of an alert.
Greg
------------------------------
End of Info-Hams Digest V93 #1393
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