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- Date: Thu, 13 Jan 94 08:13:06 PST
- From: Info-Hams Mailing List and Newsgroup <info-hams@ucsd.edu>
- Errors-To: Info-Hams-Errors@UCSD.Edu
- Reply-To: Info-Hams@UCSD.Edu
- Precedence: Bulk
- Subject: Info-Hams Digest V94 #33
- To: Info-Hams
-
-
- Info-Hams Digest Thu, 13 Jan 94 Volume 94 : Issue 33
-
- Today's Topics:
- Daily Summary of Solar Geophysical Activity for 11 January
- Dipoles Fed By Ladder Line (2 msgs)
- GB2ATG (January 1994)
- Portable 2m Antenna for Mountaineering???
- When will my license expire?
-
- Send Replies or notes for publication to: <Info-Hams@UCSD.Edu>
- Send subscription requests to: <Info-Hams-REQUEST@UCSD.Edu>
- Problems you can't solve otherwise to brian@ucsd.edu.
-
- Archives of past issues of the Info-Hams Digest are available
- (by FTP only) from UCSD.Edu in directory "mailarchives/info-hams".
-
- We trust that readers are intelligent enough to realize that all text
- herein consists of personal comments and does not represent the official
- policies or positions of any party. Your mileage may vary. So there.
- ----------------------------------------------------------------------
-
- Date: Tue, 11 Jan 1994 21:30:42 MST
- From: swrinde!sgiblab!darwin.sura.net!math.ohio-state.edu!cyber2.cyberstore.ca!nntp.cs.ubc.ca!alberta!adec23!ve6mgs!usenet@network.ucsd.edu
- Subject: Daily Summary of Solar Geophysical Activity for 11 January
- To: info-hams@ucsd.edu
-
- /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
-
- DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY
-
- 11 JANUARY, 1994
-
- /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
-
- (Based In-Part On SESC Observational Data)
-
-
- SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 11 JANUARY, 1994
- -----------------------------------------------------------
-
- !!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 011, 01/11/94
- 10.7 FLUX=101.1 90-AVG=102 SSN=056 BKI=0143 2533 BAI=016
- BGND-XRAY=B2.8 FLU1=9.7E+05 FLU10=1.0E+04 PKI=2133 2543 PAI=015
- BOU-DEV=004,009,042,024,017,072,029,031 DEV-AVG=028 NT SWF=00:000
- XRAY-MAX= C1.8 @ 0417UT XRAY-MIN= B2.1 @ 2251UT XRAY-AVG= B3.9
- NEUTN-MAX= +003% @ 0440UT NEUTN-MIN= -002% @ 2305UT NEUTN-AVG= -0.1%
- PCA-MAX= +0.1DB @ 1745UT PCA-MIN= -0.3DB @ 1505UT PCA-AVG= -0.0DB
- BOUTF-MAX=55349NT @ 1500UT BOUTF-MIN=55310NT @ 1651UT BOUTF-AVG=55340NT
- GOES7-MAX=P:+000NT@ 0000UT GOES7-MIN=N:+000NT@ 0000UT G7-AVG=+071,+000,+000
- GOES6-MAX=P:+161NT@ 1753UT GOES6-MIN=N:-062NT@ 0639UT G6-AVG=+095,+020,-018
- FLUXFCST=STD:095,094,094;SESC:095,094,094 BAI/PAI-FCST=025,015,015/025,015,015
- KFCST=3445 4433 3344 3222 27DAY-AP=009,019 27DAY-KP=2233 3221 1334 4434
- WARNINGS=*SWF;*AURMIDWCH
- ALERTS=
- !!END-DATA!!
-
- NOTE: The Effective Sunspot Number for 10 JAN 94 was 60.4.
- The Full Kp Indices for 10 JAN 94 are: 2- 1- 1o 1o 2- 1- 1+ 1o
-
-
- SYNOPSIS OF ACTIVITY
- --------------------
-
- Solar activity was low. Region 7648 (N07W37) produced
- several small C-class flares. This region, and abutted Region
- 7650 (N05W27) were generally stable. The trailer of 7648 is
- intruding upon the leader of Region 7650 creating high magnetic
- gradients there.
-
- Solar activity forecast: solar activity should be very
- low to low. An isolated M-class flare remains a possibility
- from the 7648/7650 complex.
-
- STD: A full-disk Yohkoh x-ray image has been appended to this
- report, showing the position of the coronal hole and the
- strong, broad emissive area covered by departed Regions 7646
- and 7645. It is interesting to note that intense Fe X
- emissions were also observed from these regions as they
- departed the west limb, in addition to the moderate Ca XV
- emissions reported earlier.
-
- The geomagnetic field was quiet to unsettled until
- approximately 1500Z when the field became disturbed. Mid
- latitudes went to active to minor storm levels. Some high
- latitude sites experienced major to severe storm conditions.
- The coronal hole in the southwest is the likely source of
- this disturbance. The time of onset is slightly earlier
- than expected.
-
- Geophysical activity forecast: the geomagnetic field
- should be at active to minor storm levels for 12 Jan. Local
- nighttime sectors could experience major storm conditions.
- Near active levels are forecast for 13-14 Jan with some
- minor storm periods possible during that time.
-
- Event probabilities 12 jan-14 jan
-
- Class M 20/20/20
- Class X 05/05/05
- Proton 05/05/05
- PCAF Green
-
- Geomagnetic activity probabilities 12 jan-14 jan
-
- A. Middle Latitudes
- Active 50/40/35
- Minor Storm 30/20/15
- Major-Severe Storm 05/05/01
-
- B. High Latitudes
- Active 50/40/35
- Minor Storm 30/20/15
- Major-Severe Storm 05/05/01
-
- HF propagation conditions were near-normal over the low
- and middle latitudes. High and polar latitudes were also
- near-normal until approximately 12:00 UTC when minor signal
- instabilities began to be noticed with the onset of enhanced
- geomagnetic and auroral activity. Conditions deteriorated
- rapidly thereafter. Barely usable propagation was observed
- between approximately 17:00 and 19:30 UTC, with some upper
- middle latitude regions also noticing degradation. Effects
- were most pronounced during the local night-sectors.
- Conditions then showed some improvements for the remainder of
- the day. Propagation is expected to be unstable over the
- higher latitudes during the next 24 to 48 hours. Fair to
- occasionally very poor propagation can be expected. Middle and
- low latitude regions should remain near-normal with
- night-sector conditions occasionally dipping to fair levels,
- particularly on circuits approaching the proximity of the
- auroral ovals. Conditions should begin improving on 13 or 14
- January.
-
-
- COPIES OF JOINT USAF/NOAA SESC SOLAR GEOPHYSICAL REPORTS
- ========================================================
-
- REGIONS WITH SUNSPOTS. LOCATIONS VALID AT 11/2400Z JANUARY
- ----------------------------------------------------------
- NMBR LOCATION LO AREA Z LL NN MAG TYPE
- 7648 N07W38 020 0220 EAO 12 013 BETA
- 7650 N05W28 010 0140 DAI 09 023 BETA
- REGIONS DUE TO RETURN 12 JANUARY TO 14 JANUARY
- NMBR LAT LO
- NONE
-
-
- LISTING OF SOLAR ENERGETIC EVENTS FOR 11 JANUARY, 1994
- ------------------------------------------------------
- BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP
- NONE
-
-
- POSSIBLE CORONAL MASS EJECTION EVENTS FOR 11 JANUARY, 1994
- ----------------------------------------------------------
- BEGIN MAX END LOCATION TYPE SIZE DUR II IV
- NO EVENTS OBSERVED
-
-
- INFERRED CORONAL HOLES. LOCATIONS VALID AT 11/2400Z
- ---------------------------------------------------
- ISOLATED HOLES AND POLAR EXTENSIONS
- EAST SOUTH WEST NORTH CAR TYPE POL AREA OBSN
- 56 S49E57 S49E57 S34W43 S28W33 347 EXT NEG 029 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
- ------ ---- ---- ---- ---- -- ------ ------ --------- --------- ---------
- 10 Jan: 0323 0333 0348 B8.1
- 0412 0420 0427 B7.5
- 0439 0442 0443 B6.3
- 1002 1005 1010 B4.5
- 1126 1129 1134 B4.7
- 1303 1308 1321 SF 7648 N07W18
- 1734 1735 1738 SF 7648 N06W21
- 1941 1945 1950 B7.2
- 2048 2052 2055 B6.2
- 2132 2135 2137 B9.5 SF 7648 N07W23
- 2311 2316 2322 C1.3 SF 7648 N07W27
-
-
- REGION FLARE STATISTICS FOR THE PREVIOUS UTC DAY
- ------------------------------------------------
-
- C M X S 1 2 3 4 Total (%)
- -- -- -- -- -- -- -- -- --- ------
- Region 7648: 1 0 0 4 0 0 0 0 004 (36.4)
- Uncorrellated: 0 0 0 0 0 0 0 0 007 (63.6)
-
- Total Events: 011 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
- ===========================================================================
-
- 10 January 1994, 03:00 UTC
-
- North
- .............,,,,,,,,,,,,,........ . .
- ......,,,,,,,:,,,,,,,,,,,,,,:,,,,,,,..,.... ..... ............ .
- .....,,,::::::,,.....,,,,,,,,,,,,.,,,,..,..,....,,,,,:,,,,,...... . .
- . ....,,,,,::;:,..... .....,...,,,,,,..:,,..,.,,,,,,,,,,:::,,,,.,.........
- ....,,,,,:::,...,...... ..........,,,,.,.,,,,,,.,,.,.,,.,,:::::,,,,.......
- .....,,,:::;:,,,,,:,,.. . . ....,,,,,,....,,,,,,,,.,.,.,,,,,:;;;;::,,,,,,,.
- .....,,::;;;:,,,::,:,,.. ...... ...,,,,,,,,,,,,,,,,,,,,,,.,,,,,::;-;;:::,,,,,
- ..,,,,,::;;;,,,,,,:,,.... ...,,,......,,,:,,,,,,::,,,,,,,,,,,,::::;--;;;::::::
- ..,,,:::;;::,,,,,,,,,.,,...,,:;::,,,.,,,,::::::::::,:,,,,.,,:::::::-;-+++++-;;:
- .,,:::;;;:,,,,,,,,,,,,,,,::--+;:::,,,,,:;;;;-----;;::,,,:,:::::;;;;---!2222!+-;
- .,::;;--:,:,,,,,,,,,,,,,,::++--:::;;;;:;--++|!1!|+-;;::;::::::::;-----!4**421|+
- ,,::;--;..,,,,.,,,,,,.,,;;----+-;;|||+--|12434##*2|++-;;;+;::,,::;---+|3##*4211
- .,:;-++:,.,,,.....,.,,,:;-;;------+122!|3@#@@4#@@*2|+-;;;;:,,:::::;--+|2@@#*443
- ,,:;+++,,,..,.......,,,,::,::;;:;:-!111!13323123443|+-;::,,,,:::::;;;-+!3##**43
- .,:;-+-,,......,:.....,,,,::,,:,,::-+|||++++++++|||+;:;;,,,,,,,,:::;;-+|3*#@@#*
- ..,:---:.,.....:.....,,......,,,,,::--------;;;;;;;;;;;::,,,,:::::;;;-|1*@@@@@*
- ..,,:;-:,........................,::;----;;;::::;;;;;;:,,,::,:;:::;;-+|1@@@@@#*
- ..,,:;,,.. .. .....,.,....,..,,,,,,;;;;;:::::::::;;:,,,,,::,::;;-;--+|2@@###*3
- . ..,::,.......,...,,,,...,.,,,,.,,::;;;:;:::::,,..,,,,,:::,::;;;--+|4#@*43331
- ...,,,,........,....,..,.,..,,....,:::-;;;::........,,,,,::::;---++2#*4321!!|
- ......,,,...........,.....,.,,.. .,.,::,.. ......,:::::;;;----+!2221!|++-
- .....,,,,,........ .. .... . .....,,,,::::;;---+!1221!|||+-
- . ....,,::,,....... .. .....,,,,:::;--+|!11!!|||++-
- .....,:::...... .. .....,.,..,.,:::;;-|||!||||+++--
- ..,,,,,. .....,,,..,..,,,::;-+++|||+++----;
- . ...,,,. . .. ...,.....,,,,,,::;--;;;--------;;;;
- ....,.. .....,,,,:::;--;;;;;::;;;;:;:::::
- . . .... .,,:;;--++--;;;;;:::,:,,,,,,,,,
- ......,, . ..,::;---+----;;;::::,,,,...,,,,
- . .........................,::;;;;;;;;;;:::,:,........
- . . .. . . ...,,::::::,:,,,,,,.......
- .. .....,........ ......
- .. .. ..
-
- 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: ftp.uleth.ca
- (IP # 142.66.3.29) to view these images on VGA screens.
-
-
- ** End of Daily Report **
-
- ------------------------------
-
- Date: 13 Jan 94 15:49:01 GMT
- From: news-mail-gateway@ucsd.edu
- Subject: Dipoles Fed By Ladder Line
- To: info-hams@ucsd.edu
-
- Text item: Text_1
-
- >Anyone have an opinion on my going to ~260 ft (yes, I do have room),
- >especially regarding performance on higher bands (40-10 meters).
- >Brian WY2G
-
- Brian, just one thing to add to the earlier responses. An antenna of
- this sort has very little broadside radiation when the length is more
- than one wavelength. My North/105' CF has a half-wave resonant frequency
- of
- around 4.5 MHz. On 17m, the lobes are at N55E,N55W,
-
- ------------------------------
-
- Date: 13 Jan 94 15:57:01 GMT
- From: news-mail-gateway@ucsd.edu
- Subject: Dipoles fed by ladder line
- To: info-hams@ucsd.edu
-
- Text item: Text_1
-
- >Anyone have an opinion on my going to ~260 ft, especially regarding
- >performance on higher bands (40-10 meters). Brian WY2G
-
- Brian, one thing to remember about this kind of antenna is that above
- around one wavelength, there is almost no broadside radiation. A North/
- South 105' CF has lobes at N55E, N55W, S55E, and S55W on 17m. When I put
- it up I aimed it broadside at Europe and heard nothing from Europe.
- After using ELNEC to view the four lobes, I rotated it 35 degrees and
- Europe came in like gangbusters.
-
- 73, Cecil, kg7bk@indirect.com
-
- ------------------------------
-
- Date: Tue, 11 Jan 1994 09:26:00 -0700
- From: qualcomm.com!vixen.cso.uiuc.edu!howland.reston.ans.net!math.ohio-state.edu!cyber2.cyberstore.ca!nntp.cs.ubc.ca!alberta!adec23!ve6mgs!usenet@network.ucsd.edu
- Subject: GB2ATG (January 1994)
- To: info-hams@ucsd.edu
-
- BARTG * GB2ATG * NEWS * BARTG * NEWS * GB2ATG * BARTG
- This is the - British Amateur Radio Teledata Group - News Broadcast Service
- for all Amateurs and Short Wave Listeners interested in RTTY Amtor, Pactor and
- Packet Radio.
-
- This news is broadcast during the first full week commencing Monday each
- month, to the following schedule..
-
- Evening transmissions at 1930 GMT. on 3.584 MHz. Mark. +/- for QRM.
- RTTY on Monday-AFSK, Wednesday-AFSK, and Friday-FSK.
- Pactor-FEC on Tuesday.
- Amtor-FEC on Thursday and Saturday.
-
- Morning transmission at 1000 GMT. on 7.041 MHz. Mark. +/- for QRM.
- RTTY on Sunday-AFSK.
-
- An edited version of this bulletin is available on the Packet network as a
- BARTG @ GBR. file thanks to: Andy (G3ZYP) @ GB7MXM.#36.GBR.EU.
-
- It is also posted on the "INTERNET" system via the INFO-HAMS list on UCSD.EDU.
- thanks to Iain (G6ARO) who is available on the "JANET" network as
- Iain @UK.AC.HUMBER.
-
- News for January 1994. Bulletin No. 013. (all times are GMT).
-
- BARTG Information.
-
- GB2ATG editor would welcome 2 more volunteer transmit stations for 3.5 MHz. on
- week-day or Saturday evenings. Bulletins are supplied on disk to almost any IBM
- compatible format so no typing required. I would particularly welcome an offer
- from the North of England or Scotland to serve that geographical area. Please
- write or telephone for further details to: Bob (G0ARF).
-
- RTTY DX Activity.
-
- The HF bands have not been in very good shape over the last month but several
- short openings provided the following:
-
- 14 MHz.
- FK8GS and ZL1KN 0730, CN8NP 0800, ZL1SY, LU2ATR and BY1QH 0830,
- VK2RT 0900, IC8BNK 1000, VP9/WB2RAJ 1230,
- VK5GY, S51GL and 4L8A 1400, A43YY and VQ9WL 1430,
- VQ9TV, EA6MQ and UJ8JCQ 1500, TK5ML 1530,
- CH2STN and J28JJ 1600, 9M2MW 1630,
-
- 21 MHz.
- CU3EM 1100, CU1AC and LU2DGO 1600,
-
- 14 MHz Pactor.
- 7Z1AB 1400, HS1ASC 1600.
-
- QSL Information.
- VP9/WB2RAJ to home call. 4L8A (Tblisi, Georgia) via OZ1HPS.
- CH2STN was on Jesus Isl, a Canadian PQ14 area contest site.
- QSL via VE2STN.
-
- Contests.
- The Spanish EA-RTTY contest starts 1600 February 12 until 1600 February 13 on
- all 5 HF bands 80 through 10 meters.
- Four classes:
- A) Single operator all band.
- B) Single operator single band.
- C) Multi operator all band.
- D) Short Wave Listener.
- Exchange for EA stations is RST plus "Prefijo Provincial" (52 total)
- eg. - B, M, PM, VA, etc. All others give RST plus CQ zone.
- Copies of rules and sample log sheets from the editor if sase enclosed.
- Deadline for logs 15th April 1994 to:
- EA RTTY contest manager. (EA1MV). Antonio Alcolado, P.O. Box 240,
- 09400 Aranda de Duero (Burgos), Spain.
-
- Notes of interest.
- The long awaited DX-Pedition to Peter 1st Island (3Y) should be QRV all bands
- and modes from February 1 through 14. KYFC.
-
- (IC8BNK) is on the Isle of Capri, IOTA EU-031.
-
- Peter (XT2BW) takes 2 months leave in Ghana from the end of January. He hopes
- to obtain a license and be QRV (9G) when time permits. We all hope to get some
- RTTY from him following his splendid service from Burkina Faso.
-
- (A43YY) was operating from the Royal Omani Amateur Radio Field Day camp.
-
- DXCC. The ARRL Awards Committee voted 6 for 1 against accepting the ARRL DX
- Advisory Committee (DXAC) recommendation to create an Honour Roll for RTTY
- DXCC. Qualification for the new Honour Roll is the same as for Mixed Honour
- Roll. This move makes it possible to achieve DXCC Honour Roll "All RTTY" for
- the first time.
-
- Good news from Nikos (SV2WT) that Monk Apollo is active again on the HF bands
- as (SV2ASP/A) from Mount Athos. With equipment provided by Minoru JA3MNP and
- other JA stations, we all hope to find Mount Athos QRV RTTY in the coming
- months.
-
- Thanks this month to:.
- G3ZYP, DXNS, OPDX/BARF80.
-
- BARTG caters for all DATA interests with information-components-kits -ready
- built units and software from experts. Members receive a 120 page quarterly
- journal devoted to data modes. Beginners guides for most data modes are
- available. The group sponsors HF and VHF RTTY contests, administers its own DX
- and members award scheme and runs an annual rally.
-
- This copy of BARTG News is posted by Iain Kendall (G6ARO) who can be contacted
- via Internet e-mail at.. iain@humber.ac.uk Items for inclusion in the
- broadcast may also be mailed to this address, as well as any queries regarding
- membership or services offered by BARTG.
-
- Copy of the news as distributed by G0ARF 931229
-
- ------------------------------
-
- Date: Wed, 12 Jan 1994 03:35:37 GMT
- From: qualcomm.com!vixen.cso.uiuc.edu!howland.reston.ans.net!europa.eng.gtefsd.com!emory!kd4nc!ke4zv!gary@network.ucsd.edu
- Subject: Portable 2m Antenna for Mountaineering???
- To: info-hams@ucsd.edu
-
- In article <2gv7jp$3e0@netfs.dnd.ca> mercer@dgs.dnd.ca (David Mercer) writes:
- >I am an avid climber/backpacker etc and want to be able to use my HT in
- >the backcountry. I require a design for an antenna (with better gain
- >than my rubber duck) that is light, easily packable, and not too bulky,
- >which will allow me to work repeaters in the 2m band. In case it
- >matters, most (but not all) of the use will be from mountain tops.
- >
- >Obviously, a 1/2 wave diapole is a candidate but I was wondering if
- >there are any others?
- >
- >How about a boom that can be disassembeled? A flexable J pole? I would
- >appreciate any and all suggestions.
-
- Obviously a roled up twinlead J-pole will offer better performance than
- the rubber dummy load, and it's easy to carry in the pack. However, if
- you're really in the back country, a collapsable beam will be much better.
- Simple designs based on folding elements from common TV antennas are
- available. You can slip the folded antenna into a PVC tube and use that
- as a walking stick. When you're ready to operate, the PVC can double as
- a short mast.
-
- Gary
- --
- Gary Coffman KE4ZV | You make it, | gatech!wa4mei!ke4zv!gary
- Destructive Testing Systems | we break it. | uunet!rsiatl!ke4zv!gary
- 534 Shannon Way | Guaranteed! | emory!kd4nc!ke4zv!gary
- Lawrenceville, GA 30244 | |
-
- ------------------------------
-
- Date: 13 Jan 94 14:34:35 GMT
- From: ogicse!uwm.edu!fnnews.fnal.gov!att-in!att-out!cbnewst!waco@network.ucsd.edu
- Subject: When will my license expire?
- To: info-hams@ucsd.edu
-
- In article <9401120004591.jtriolo.DLITE@delphi.com> jtriolo@delphi.com
-
-
- >>You are required to be in posession of your license or a copy to operate
- >>a radio. You should get a replacement from the FCC even if you don't
- >expire
- >>soon. I think you need FCC form 610 to get a replacement, but I'm not
- >sure.
- >
- >Yes, you will need to file a form 610 for a replacement license, but it's
- >not necessary to go through a VEC to submit it. You can mail it to
- >Gettysburg yourself. I think they might automatically give you a new
- >expiration date (that is, your license would be good for 10 years from the
- >issue date of the replacement ticket).
-
- This is probably true. When I moved a few years ago and sent in a 610 for
- a change of address, I got a new license with a new expiration date.
-
- >
- >73 de Jason, KD4ACG
-
- 73,
-
- John, WB9VGJ
-
- =========================================================
- John L. Broughton | snail mail: Room 1K-322
- AT&T | 1200 E. Warrenville Rd.
- | P.O. Box 3045
- | Naperville, IL 60566-7045
- | (708) 713-4319
- | e-mail: john.l.broughton@att.com
- | att!john.l.broughton
- | air mail: WB9VGJ
- =========================================================
-
- ------------------------------
-
- Date: Wed, 12 Jan 1994 03:18:18 GMT
- From: qualcomm.com!vixen.cso.uiuc.edu!howland.reston.ans.net!europa.eng.gtefsd.com!emory!kd4nc!ke4zv!gary@network.ucsd.edu
- To: info-hams@ucsd.edu
-
- References <1994Jan2.212541.3319@cmkrnl>, <2gs9mk$gd6@aurns1.aur.alcatel.com>, <CJFv2M.pr@cnsnews.Colorado.EDU>y
- Reply-To : gary@ke4zv.atl.ga.us (Gary Coffman)
- Subject : Re: why 29.94 fps?
-
- In article <CJFv2M.pr@cnsnews.Colorado.EDU> collinsn@spot.Colorado.EDU (Neil Collins) writes:
- >
- > From publication 432: "Frequency Calibration Service Using Network
- >Television: For those users who require only frequency calibrations,
- >an alternative to the radio broadcasts is available. This service provides
- >a means of calibrating oscillators traceable to NBS. It gives the user
- >the option of calibrating his oscillator quickly at very low cost, with
- >modest accuracy, or of expending more time and money for higher accuracy.".
- >
- > "The service is very reliable because the networks use extremely
- >stable rubidium or cesium oscillators to generate the 3.58MHz color
- >subcarrier frequency which is transmitted with all color programs. The
- >color signal is then used as a transfer standard. Any oscillator that
- >has a frequency of 10/N MHz, where N is any integer from 1 to 100, can
- >be calibrated.".
-
- Unfortunately publication 432 is out of date here. The nets don't
- work this way anymore, and haven't since the late 1970s, as has been
- noted previously in this thread. Using broadcast colorburst will only
- give you a reference that's the local crystal oscillator at the local
- broadcast outlet. It's likely no more accurate than your own crystal
- oscillator, about 4 ppm. NIST should circulate a retraction of this
- technique because it's likely still misleading folks. (They may have
- issued one, but I haven't seen it.)
-
- Gary
- --
- Gary Coffman KE4ZV | You make it, | gatech!wa4mei!ke4zv!gary
- Destructive Testing Systems | we break it. | uunet!rsiatl!ke4zv!gary
- 534 Shannon Way | Guaranteed! | emory!kd4nc!ke4zv!gary
- Lawrenceville, GA 30244 | |
-
- ------------------------------
-
- Date: Wed, 12 Jan 1994 03:23:39 GMT
- From: qualcomm.com!vixen.cso.uiuc.edu!howland.reston.ans.net!usc!elroy.jpl.nasa.gov!swrinde!emory!kd4nc!ke4zv!gary@network.ucsd.edu
- To: info-hams@ucsd.edu
-
- References <CJFF8p.56v@spk.hp.com>, <1994Jan11.150658.25191@ke4zv.atl.ga.us>, <2guq4i$m3t@news.acns.nwu.edu>swrinde
- Reply-To : gary@ke4zv.atl.ga.us (Gary Coffman)
- Subject : Re: BRAIN CANCER, LEUKEMIA FROM HAM RADIO
-
- In article <2guq4i$m3t@news.acns.nwu.edu> rdewan@casbah.acns.nwu.edu (Rajiv Dewan) writes:
- >In article <1994Jan11.150658.25191@ke4zv.atl.ga.us>,
- >Gary Coffman <gary@ke4zv.atl.ga.us> included a FAQ on radiation.
- >
- >Thanks for including it Gary. I enjoyed reading it and learnt a lot
- >from it. The following paragraph about microwave ovens caught my attention:
- >
- >>The molecular vibration caused by MW is how and why a MW oven works -
- >>exposure of the food to the microwaves causes water molecules to vibrate and
- >>get hot. MW and RF penetrate and heat best when the size of the object is
- >>close to the wavelength. For the 2450 MHz (2.45 billion Hz) used in
- >>microwave ovens the wavelength is 5 inches, a good match for most of what we
- >>cook.
- >
- >And I thought that this frequency was picked because it was close to
- >a resonant frequencty of the O-H bond present in water, sugars and fats -
- >common though often undesired components of what we eat.
-
- That's true. The faq is saying two separate things here. First it's
- noting that 2.45 GHz excites water molecules. And second it's saying
- that an object tends to absorb RF best when the wavelength, actually
- *half* wavelength, matches the size of the object. That's because
- maximum E (or H) field difference is developed across it.
-
- Note: 2.45 GHz is *not* a resonant frequency for water molecules,
- but water does absorb significantly at this frequency.
-
- Gary
- --
- Gary Coffman KE4ZV | You make it, | gatech!wa4mei!ke4zv!gary
- Destructive Testing Systems | we break it. | uunet!rsiatl!ke4zv!gary
- 534 Shannon Way | Guaranteed! | emory!kd4nc!ke4zv!gary
- Lawrenceville, GA 30244 | |
-
- ------------------------------
-
- Date: Tue, 11 Jan 1994 15:56:22 GMT
- From: haven.umd.edu!darwin.sura.net!math.ohio-state.edu!news.acns.nwu.edu!news.eecs.nwu.edu!gagme!n5ial!jim@ames.arpa
- To: info-hams@ucsd.edu
-
- References <1994Jan8.170346.3051@n5ial.mythical.com>, <2gsahs$abt@ornews.intel.com>, <CJFoGs.2vo@ucdavis.edu>
- Subject : Re: I need a terminal program for 2 TNCs at once
-
- In article <CJFoGs.2vo@ucdavis.edu> ez006683@othello.ucdavis.edu
- (Daniel D. Todd) writes:
-
- > On a related line. What good terminal programs allow for
- >individual windows for each stream in multiuser mode. It would also be
- >nice to have a window to monitor other QSO's without all the extra
- >garbage.
-
- I may be way off here---I'm not sure exactly what you're after. If you're
- looking for something that helps when multiple people are involved in a
- single conversation, say on some BBS with a conferencing bridge, etc.,
- then I've got nothing for you. :-(
-
- If, however, you're looking for something that does this for ``normal''
- packet use, and you just want each active stream in its own window, as
- well as another window for monitor output, you might want to get with
- me about KAMterm. It isn't a Windows program---it's plain text mode, but
- it does have multiple windows (each active stream has its own window, and
- each of these takes up lines 0-20, or something like that..., of the
- screen). KAMterm is currently only available for dos, but I'm slowly but
- surely working on a UNIX version.
-
- Later,
- --jim
-
- --
- 73 DE N5IAL (/4) < Running Linux 0.99 PL10 >
- jim@n5ial.mythical.com ICBM: 30.23N 86.32W
- || j.graham@ieee.org Packet: N5IAL@W4ZBB (Ft. Walton Beach, FL)
- E-mail me for information about KAMterm (host mode for Kantronics TNCs).
-
- ------------------------------
-
- End of Info-Hams Digest V94 #33
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