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1994-11-13
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Date: Fri, 16 Sep 94 18:00:20 PDT
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 #1031
To: Info-Hams
Info-Hams Digest Fri, 16 Sep 94 Volume 94 : Issue 1031
Today's Topics:
(Getting long) Re: A Repeater on 147.555?!? (2 msgs)
ARLD057 DX news
CO0FRC
Coax Fittings
FT-1000 Controller (2 msgs)
GB2VK..Special Event
HPM Lesson?
IPS Daily Report - 16 September 94
Looking for the best DSP filter for HF?
My license is granted
Radio History
SAREX Update & Keps 9/16
Western CT. Hamfest 18 SEP 94
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: Thu, 15 Sep 94 20:43:53 -0400
From: psinntp!news.worldlink.com!usenet@uunet.uu.net
Subject: (Getting long) Re: A Repeater on 147.555?!?
To: info-hams@ucsd.edu
>DATE: 14 Sep 1994 07:29:58 GMT
>FROM: Gary McDuffie Sr <mcduffie@unlinfo.unl.edu>
>
>Jeff-
>
>The real answer would have been for him to move to the input frequency
>of 146.535, since that is a nationally recognized simplex channel, and
>operate there.
>
>Gary
Hmmm. This wouldn't be deliberate interference, would it?
...phil /kd8uoy
------------------------------
Date: 17 Sep 94 00:37:24 GMT
From: news-mail-gateway@ucsd.edu
Subject: (Getting long) Re: A Repeater on 147.555?!?
To: info-hams@ucsd.edu
Seems like there could be a relatively simple technological
solution to this problem.....remember back in the early days of
repeaters that 146.94 was a simplex frequency before it was a
repeater output frequency??? As repeaters were developed, the
solution to the problem of the repeater causing interference to
simplex users was a "guard receiver" on the repeater. This
additional receiver was tuned to the repeater *output* frequency
and the repeater control logic set up in such a way that the
repeater transmitter was inhibited if the squelch on the "guard
receiver" was open--indicating activity on the channel. When
this activity ceased, the repeater transmitter was again enabled,
and normal repeater operation could resume. The guard receiver
had to be co-located at the repeater site, of course, so that it
could hear far-away stations on the repeater output channel.
Perhaps this is not a total cure-all, but it would at least
enable the repeater to co-exist on a simplex channel without
causing interference to simplex users--with the drawback that
repeater users would have to wait for the channel activity to
drop before their signals on the input could bring up the
repeater transmitter. Before rigorous bandplans were adopted
guard receivers were much more common than they are today, but
were installed to comply with FCC regs which at that time
required that you not intentionally clobber another QSO on a
given channel. Since repeater operation and "automatic control"
have become recognized by the FCC, I suppose repeaters now have
the right to come up on any channel they want at any time they
want. Seems like the repeater coordinator(s) should have
required the new repeater to utilize a guard receiver, especially
since it is in violation of the bandplan by its use of simplex
frequencies. Of course it's easier to QSY rather than fight, but
I wouldn't take this lying down if I were so unfortunate as to
live in Southern Calif!!!! (big smiley!) Last time I visited
W6 it was very difficult to find an empty simplex channel, and of
course now it's worse!
Herb, WL7BIL
jsamo@acad1.alaska.edu
------------------------------
Date: Thu, 15 Sep 1994 17:45:13 EDT
From: psinntp!arrl.org!usenet@uunet.uu.net
Subject: ARLD057 DX news
To: info-hams@ucsd.edu
SB DX @ ARL $ARLD057
ARLD057 DX news
ZCZC AE55
QST de W1AW
DX Bulletin 57 ARLD057
------------------------------
Date: 16 Sep 94 19:55:00 GMT
From: news-mail-gateway@ucsd.edu
Subject: CO0FRC
To: info-hams@ucsd.edu
John, W3GOI, asked about a QSL route for CO0FRC. See either July or
August (I'm not sure which one) CQ Magazine in the VHF column. A
feature article about the operation, pictures, and QSL route was
included.
73,
Joe - K2YJL - VK2EJA
------------------------------
Date: Sun, 11 Sep 1994 02:43:55 GMT
From: agate!iat.holonet.net!pcappbbs!dale.piedfort@ames.arpa
Subject: Coax Fittings
To: info-hams@ucsd.edu
9913 is great coax if you are going to use it in straight runs, it will
not take undo flexing such as being used on a rotor though. And one of
the drawbacks of 9913 it is subject to contamination because of the air
dielectric. Better coax for your use would be Times Micro Wave LMR400
which uses standard UHF Connectors (PL259) or Comet 5D-FB, which can
be purchased from any quality Amateur Radio Store. Check your Handbook
and look at the loss factors on coax such as RG8X RG58AU and even the
loss in RG213 or RG8. I use 9913 on my vertical installations, but
would never consider it for a turnable beam antenna. If your Radio
store doesnt carry LMR400 or the Comet 5D-FB you can call NCG Inc.
in Anaheim, California 1-714-630-4541 (Comet Importer) and they will
be happy to point you in the right direction. Or you can call
Talley Communications in Santa Fe Springs, Calif (dont Have Number)
and they would be able to ship you LMR400. One point the Comet Coax
does require special connectors. Hope this helps. Dale KB7UB
dale.piedfort@pcappbbs.com
------------------------------
Date: 16 Sep 1994 10:03:46 -0700
From: ihnp4.ucsd.edu!dog.ee.lbl.gov!overload.lbl.gov!agate!barrnet.net!nntp.crl.com!crl4.crl.com!not-for-mail@network.ucsd.edu
Subject: FT-1000 Controller
To: info-hams@ucsd.edu
In article <1994Sep15.195315.26816@falcon.rd.ray.com>,
cole@falcon.rd.ray.com (Brad Cole) wrote:
> Where can I find a circuit that interfaces the Yaesu FT-1000
> to the RS-232 port on my computer? Also, what (good) software
> is available to perform logging, monitoring packet dx spots,
> and controlling the FT-1000 and the PK-232? I know that Yaesu
> sells interfacing hardware.
The Yaesu CAT System Interface is "FIF-232C".
J-COM / Ramsey also sells an RS-232 interface. Their TC-Y1 will
interface with the FT-1000, and comes with a disk full of software.
I believe MFJ has a similar product to the J-COM / Ramsey version.
If you are a homebrewer, the MAX232 chip and a resistor may be
helpful.
There is much less controller software written for Yaesu than for ICOM
or Kenwood. I was unable to find a package that met my needs, so I
wrote my own.
Lou
------------------------------------------------------------------------
------------------------Usual Disclaimers Apply-------------------------
Internet: lgenco@crl.com Lou.Genco@LChance.sat.tx.us
Ham Radio Packet: N5SGL @ K3WGF.#SAT.TX.USA tcp/ip: n5sgl@sat.ampr.org
------------------------------------------------------------------------
------------------------------
Date: 16 Sep 1994 21:48:29 GMT
From: convex!cs.utexas.edu!math.ohio-state.edu!howland.reston.ans.net!news.cac.psu.edu!news.pop.psu.edu!psuvax1!news.cc.swarthmore.edu!netnews.upenn.edu!news.amherst.edu!news.@darwin.sura.net
Subject: FT-1000 Controller
To: info-hams@ucsd.edu
Lou Genco (lgenco@crl.com) wrote:
: In article <1994Sep15.195315.26816@falcon.rd.ray.com>,
: cole@falcon.rd.ray.com (Brad Cole) wrote:
: > Where can I find a circuit that interfaces the Yaesu FT-1000
: > to the RS-232 port on my computer? Also, what (good) software
: > is available to perform logging, monitoring packet dx spots,
: > and controlling the FT-1000 and the PK-232? I know that Yaesu
: > sells interfacing hardware.
:
: The Yaesu CAT System Interface is "FIF-232C".
:
: J-COM / Ramsey also sells an RS-232 interface. Their TC-Y1 will
: interface with the FT-1000, and comes with a disk full of software.
:
: If you are a homebrewer, the MAX232 chip and a resistor may be
: helpful.
If it would help any, here is a interface for the Kenwood TS-850S. The idea
is probably almost exactly teh same for the Yeasu. The idea being the radio
outputs 5v levels and you need to convert this to the +-12V levels RS-232 uses.
Thats all. I have not yet built this, but will be building a derivation of it
in the future. This might be a spring board for you to work off of. As far as
I can tell, the circuit is sound yet its up to the builder to verify this-
although I've been told that this works well, so good luck. Note: Kenwood
happens to implement a asserted low output (where you give a ground signal to
represent a 1) thus the 7404 inverter. BTW, the circuit is really inexpensive.
You can buy the
MAX-232 IC for about $4-6 from Digi-Key although they have a minimum order...
you might be able to find somewhere else that would sell you just one.
Good Luck!
-----------------------------------------------------------------------------
*** Homebrew Interface Schematic by IW3FQG ***
+5V <-----------o------------------o----+ C = 10uF
| +| | IC1 = 7404
| C | = | | IC2 = MAX232
| +-+-+ |
14 | 2 | 16|
T TXD +----------+ +------------+ RXD
R 2 <------| 1 2 |-------|11 14|----------------> 3
A RXD | I | | I | TXD R
N 3 <------| 4 C 3 |-------|12 C 13|----------------> 2 S
S CTS | 1 | | 2 | CTS
C 4 <------| 9 5 |-------| 9 7|----------------> 5 2
E RTS | | | | RTS 3
I 5 <------| 6 8 |-------|10 8|----------------> 4 2
V +----------+ | 4|------+
E |7 +--|1 3 6 15 5|-+ | +-> 7 C
R 1 <--+ | +| +------------+ | +| | O
| ///// C | = | | +| | | | = | C | M
///// +-+-+ | | = | | | +-+-+ /// P
| | +-+-+ | | | O
+----+ C | | +----+ R
/////// T
1990 IW3FQG
Following parts obtained from JDR Microdevices, San Jose,Ca. 800-538-5000
IC1------7404 Hex Inverter (14pin IC socket pt# 14PIN ST)
IC2------MAX232CPE Dual RS232 trans/rec (16pin IC socket pt# 16PIN ST)
C--------10uf Tantalum caps
The 6-pin DIN plug for the transciever connection is avalible from
Radio Shack...cat# 276-020. As well as the 25 or 9 pin connector for
the comm port.
The +5 volts can be easily obtained using a 9v battery and a 5v fixed
voltage regulator IC (R.S. cat# 276-1770)
_______
| v.reg |
| |
| |
|_______|
| | |
___________| | |____________ +5 volts>>>>
+| |
----- |
9 volt --- |
bat. ----- |
--- |
- |_____________|
|
////////
The following is a the pin out difference
between a 25 pin and a 9 pin AT serial connector
RS232 SIGNAL PC-AT (9pin)
2 txd 3
3 rxd 2
4 rts 7
5 cts 8
6 dsr 6 (not used in interface)
7 gnd 5
8 car det 1 (not used in interface)
20 dtr 4 (not used in interface)
22 ring ind 9 (not used in interface)
---------------------------------------------------------------------------
73,
--
Vince Hadley |
KA7GVQ |
hadleyv@bones.et.byu.edu |
------------------------------
Date: 12 Sep 1994 13:38:09 GMT
From: agate!doc.ic.ac.uk!clss3.bangor.ac.uk!clss1!bss014@ames.arpa
Subject: GB2VK..Special Event
To: info-hams@ucsd.edu
GB2VK
On Sept 22nd 1994 the Dragon Amateur Radio Club (North Wales) will be operating
GB2VK to commemorate the 76th anniversary of the first direct wireless message
between UK and Australia.This was sent from the Marconi Company station at
Waunfawr near Caernarfon,North Wales to Wahroonga,NSW.
The station which will be on air from 0001-2359Z will be set up in the
original station buildings at Waunfawr and will operate simultaneously on
SSB and CW.Target freqs are:
CW........14.020 SSB.......14.170
21.020 21.170
plus local 80/40m activity (10m if open..)
The above freqs will be +/- QRM but will depend on conditions.It is hoped
to run a packet station on site and to post operating freqs on the DX Cluster
network.
We hope to contact VK2WAH at the Aussie end at some time during the day but
any/everyone is invited to call in; a special QSL is being issued.Please give
us a call...the old building is cold and drafty so we will need plenty of
activity to keep the spirits up!
CUL.....Stewart Rolfe GW0ETF
------------------------------
Date: 14 Sep 1994 10:06:46 -0700
From: murky.apple.com!mumbo.apple.com!gallant.apple.com!apple.com!apple.com!not-for-mail@decwrl.dec.com
Subject: HPM Lesson?
To: info-hams@ucsd.edu
Hans Brakob <71111.260@CompuServe.COM> writes:
>After 16 hours of operation I have 2142 QSO's on a single band/mode.
>"Annualizing" that to 24 hours you get over 3200 QSO's. In a 24-hour
>SweepStakes I'd be in the top-ten box with about half that number of
>Q's.
Hans, the bands (at least 20m, where all my /125 contacts came) didn't
feel as crowded as during a SS. Your experiece probably comes from the
fact that you are one of the few (relative) "rare" ones. During SS,
you wouldn't get such a pileup as signing K0HB/125; there are more
stations issuing CQs during an SS to spread the QSO load.
If we rack up the total contacts for everyone participating on SS and
on the /125 event, I'll wager that the SS would overwhelm the /125 event.
BTW, thanks for the K0HB/125 contact, Hans (1656z, 09/03). Only time
one is glad to contact V.D. :-).
73,
Kok Chen, AA6TY kchen@apple.com
Apple Computer, Inc.
------------------------------
Date: Fri, 16 Sep 1994 23:13:07 GMT
From: ihnp4.ucsd.edu!munnari.oz.au!yoyo.aarnet.edu.au!yarrina.connect.com.au!news.uwa.edu.au!harbinger.cc.monash.edu.au!news.cs.su.oz.au!metro!ipso!rwc@network.ucsd.edu
Subject: IPS Daily Report - 16 September 94
To: info-hams@ucsd.edu
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 16/2330Z SEPTEMBER 1994 BY IPS RADIO AND SPACE SERVICES
FROM THE REGIONAL WARNING CENTRE (RWC), SYDNEY.
SUMMARY FOR 16 SEPTEMBER AND FORECAST FOR 17 SEPTEMBER - 19 SEPTEMBER
-----------------------------------------------------------
1A. SOLAR SUMMARY
Activity: very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number : 71/6
GOES satellite data for 15 Sep
Daily Proton Fluence >1 MeV: 2.9E+06
Daily Proton Fluence >10 MeV: 3.9E+04
Daily Electron Fluence >2 MeV: 6.3E+08
X-ray background: LT
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
1B. SOLAR FORECAST
17 Sep 18 Sep 19 Sep
Activity Very low Very low Very low
Fadeouts None expected None expected None expected
Forecast 10.7 cm flux/Equivalent Sunspot Number for 17 Sep: 70/5
-----------------------------------------------------------
2A. MAGNETIC SUMMARY
Geomagnetic field at Learmonth: quiet to unsettled
Estimated Indices : A K Observed A Index 15 Sep
Learmonth 9 3322 2222
Fredericksburg 10 7
Planetary 10 7
Observed Kp for 15 Sep: 2122 2223
2B. MAGNETIC FORECAST
DATE Ap CONDITIONS
17 Sep 6 Quiet to unsettled
18 Sep 6 Quiet
19 Sep 6 Quiet
-----------------------------------------------------------
3A. GLOBAL HF PROPAGATION SUMMARY
LATITUDE BAND
DATE LOW MIDDLE HIGH
16 Sep normal normal normal
PCA Event : None.
3B. GLOBAL HF PROPAGATION FORECAST
LATITUDE BAND
DATE LOW MIDDLE HIGH
17 Sep normal normal normal
18 Sep normal normal normal
19 Sep normal normal normal
-----------------------------------------------------------
4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Observed
DATE T-index MUFs at Sydney
16 Sep 27 about 10% above predicted monthly values
Predicted Monthly T-index for September: 20
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
DATE T-index MUFs
17 Sep 25 0 to 10% above predicted monthly values
18 Sep 25 Near predicted monthly values
19 Sep 25 Near predicted monthly values
--
IPS Regional Warning Centre, Sydney |IPS Radio and Space Services
RWC Duty Forecaster tel: +61 2 4148329 |PO Box 5606
Recorded Message tel: +61 2 4148330 |West Chatswood NSW 2057
email: rwc@ips.oz.au fax: +61 2 4148331 |AUSTRALIA
------------------------------
Date: 14 Sep 1994 14:52:03 -0700
From: ihnp4.ucsd.edu!swrinde!howland.reston.ans.net!europa.eng.gtefsd.com!library.ucla.edu!csulb.edu!paris.ics.uci.edu!not-for-mail@network.ucsd.edu
Subject: Looking for the best DSP filter for HF?
To: info-hams@ucsd.edu
In <Cw4p5G.563@vcd.hp.com> ericr@vcd.hp.com (Eric Ross) writes:
>Don't underestimate the effectiveness of the much less expensive Radio
>Shack DSP (about $80). I am extremely happy with it. You can give it
>a try and if you don't like it, return it, but maybe save enough
>money for an IF filter.
It is my understanding that the Radio Shack DSP filter does not have
a noise reduction mode (the noise reduction is merely a product of the
narrow bandwidth) - and that noise reduction is the main feature that
attracts me to an SSB DSP filter....which is really a shame, since
the Radio Shack filter is so inexpensive. (In fact, the Radio Shack
filter has a nonadjustable center frequency for the CW bandwidth that
is far higher than where I want to listen, too bad again....wish they
were a bit more flexible in their designs :-) . If all this is wrong
(a la QST info), I am off to buy one.
Clark
WA3JPG
------------------------------
Date: Fri, 16 Sep 1994 10:48:43 -0800
From: cronkite.cisco.com!sdarragh-mac.cisco.com!user@decwrl.dec.com
Subject: My license is granted
To: info-hams@ucsd.edu
My license was granted on September 9th. I am now KE6MGW.
--
------------------------------------------------------------------------------
Scott R. Darragh (KE6MGW) On Planet Reebok, you punish their
3535 Garrett Dr rusher, stick the receivers,
Sant Clara, Ca 95054 intimidate their quarterback, and
(408)-526-7173 walk off the field with the
cheerleaders.
------------------------------------------------------------------------------
------------------------------
Date: 16 Sep 94 21:20:53 GMT
From: news-mail-gateway@ucsd.edu
Subject: Radio History
To: info-hams@ucsd.edu
I'm looking for internet resources that describe the history of radio --
technological development, inventions, inventors, etc. (This is radio in
general -- not the history of amateur radio, as such.) Any advice,
pointers, ftp locations to suggest, etc., would be appreciated.
Paul Marsh N0ZAU pmarsh@metro.mccneb.edu
------------------------------
Date: 16 Sep 94 19:51:00 GMT
From: news-mail-gateway@ucsd.edu
Subject: SAREX Update & Keps 9/16
To: info-hams@ucsd.edu
SB SAREX @ AMSAT $STS-64.022
SAREX Update & Keps 9/16 19:30 UTC
Silver Spring, MD September 16, 1994 at 19:30 UTC
No SAREX Packet Operations
The SAREX team at mission control learned today that we will not be
able to turn on the SAREX packet system during the STS-64 mission. The
Shuttle Crew hasworked hard to conserve power to allow the Shuttle to stay
up an additional, tenth day. However, the power budget is such that SAREX
packet could not be energized through the Orbiter power without impacting
primary payload operations. We will, however, continue voice operations
using battery power when the shuttle crew is available. The SAREX team has
had many reports of voice QSOs with the shuttle crew on this flight.
Orbital Elements
The following represents the latest Keplerian Elements as generated by
Ron Parise, WA4SIR, at the Goddard Space Flight Center and checked by
Gil Carman, WA5NOM, at the Johnson Space Center.
STS-64
1 23251U 94059A 94259.27989906 0.00005269 10869-4 78459-5 0 268
2 23251 57.0062 194.7051 0009503 278.7996 81.2013 16.11955829 1033
Satellite: STS-64
Catalog number: 23251
Epoch time: 94259.27989906 (16 SEP 94 06:43:03.28 UTC)
Element set: GSFC-026
Inclination: 57.0062 deg
RA of node: 194.7051 deg Space Shuttle Flight STS-64
Eccentricity: 0.0009503 Keplerian Elements
Arg of perigee: 278.7996 deg
Mean anomaly: 81.2013 deg
Mean motion: 16.11955829 rev/day Semi-major Axis: 6619.6156 Km
Decay rate: 0.53E-04 rev/day*2 Apogee Alt: 247.52 Km
Epoch rev: 103 Perigee Alt: 234.94 Km
NOTE - This element set is based on NORAD element set # 026.
The spacecraft has been propagated to the next ascending
node, and the orbit number has been adjusted to bring it
into agreement with the NASA numbering convention.
Submitted by Frank H. Bauer, KA3HDO for the SAREX Working Group
/EX
------------------------------
Date: 15 Sep 1994 18:06:28 -0400
From: psinntp!JH.Org!not-for-mail@uunet.uu.net
Subject: Western CT. Hamfest 18 SEP 94
To: info-hams@ucsd.edu
Does anyone know if there will be VE testing there?
Tommy the Tourist (Anon User) <nobody@csua.berkeley.edu> writes:
>Admission is $4.00, kids under 12 free. ARRL sanctioned; Handicapped
>Access; Door prizes; Refreshments; Ample parking; Rain or shine.
>Talk-in will be on the 147.12 Danbury repeater, +600, PL 141.3.
>Come one, come all, enjoy some fun, and maybe get a great bargain!
>See you at the Western CT Hamfest.
>73 DE N1QNK
>Jim
--
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
ss@jh.org Steve Steinberg Amateur Radio Callsign: _______
------------------------------
Date: (null)
From: (null)
------------------------------
End of Info-Hams Digest V94 #1031
******************************