QRZ! Ham Radio 5/QRZ Ham Radio Callsign Database - Volume 5.iso/digests/infoham/941194.txt

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Date: Sun,  6 Nov 94 12:08:47 PST
From: Info-Hams Mailing List and Newsgroup <[e-mail]>
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Subject: Info-Hams Digest V94 #1194
To: Info-Hams


Info-Hams Digest            Sun,  6 Nov 94       Volume 94 : Issue 1194

Today's Topics:
                      ANARTS RTTY NEWS 30/10/94
                      Contacting the MIR. Help!
                            EXAM Software
                        GPS/PC Interface help
                        Ham stores in London ?
                   How good is 10 db 2 meter yagi?
                        Maws Coad and Spelinge
                      Motorola Amateur Group????
                             NYC MARATHON
                      R.S. 2 Meter Amplifier???
                    repeaters and intermodulation
                        Ten Tec T*Kits 2M Amp

Send Replies or notes for publication to: <[e-mail]>
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Problems you can't solve otherwise to [e-mail].

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: 2 Nov 1994 01:12:22 +1100
From: [e-mail] (Dave Horsfall)
Subject: ANARTS RTTY NEWS 30/10/94

[ ANARTS - Australian National Amateur Radio Teletype Society ]

ANARTS News 30/10/94

This   is  VK2TTY  VK2TTY  the  official  station  of   the
Australian   National   Amateur  Radio  Teleprinter   Society,
which includes  all digital modes,   with the weekly broadcast
on the following frequencies:

  3.545 MHz                  0930 UTC     VK2BQS (Jim)
  7.045 MHz -3               0030 UTC     VK2CTD (Col)
 14.070 MHz (amtor/fec)      0030 UTC     VK2DPM (Alan)
 14.091 MHz                  0030 UTC     VK2BQS (JIM)
146.675 MHz             0030/0930 UTC     VK2JPA (PAT)
144.850 MHz (ax25 bbs)                    VK2JPA AT VK2RWI
                                            (or VK2AAB)
146.675 MHz (rtty mmbbs/repeater)          VK2RTY


Bits, bauds, baubles and bangles

by Jim Piper, KD6YKL

Back  in  the days of yore  (not  mine,  yore),  when  digital
communications  meant interrupted continuous wave (CW),  folks
measured  transmission rates in worde per  minute.  Then  came
Teletype   and   the  favored    -yardstick- for   information
transmission rates became the baud (after French keyboard pio-
neer Emile Baudot).

As  speed advanced to 300 baud,  that measure of  transmission
rate  over  a  digital  communications link (which  can  be  a
telegraph  wire or a radio path) served well.  But  technology
continued  to  press forward.  As rates passed 1200  bits  per
second (bps), 300 baud began to seem smallish.

Todays  fibre-optic  lines  allow data rates as  high  as  2.5
gigabits per second (2,500,000,000 bps).  Even our  relatively
narrow UHF ham bands can easily carry data at 9,600 bps.

Most  hams  use baud to describe data rate regardless  of  the
transmission  medium.  Yet  confusing baud and bps clouds  the
discussion  of  data transmission rates.  (Its a  little  like
asking what time it is when you want to know how much time  is
left).

The problem with the indiscriminate use of the term baud stems
from a misunderstanding of its meaning.  According to Webster,
the IEEE and the ARRL,  a baud is - a unit of signalling speed
equal to one discrete condition or event per second.  In CW, a
-discrete  signalling  condition-  occurs  each time  a  radio
transmitter is keyed on or off.

How  does this relate to baud/ If you key your transmitter  at
the rate of 5 words per minute and the average word length  is
six  characters,  and  each character has an average of  three
dits and dahs, you are producing 180 symbols per minute (5 WPM
x  6 x 6).  You could say that you were transmitting CW  at  6
baud  because you are transmitting an average of 360  discrete
conditions per minute, or 6 per second. Of course, we normally
dont describe CW rates in baud, but in words per minute.

One  often  hears  packet  radio  and  voice  frequency  modms
discussed  in  terms of baud.  The actual rate at  which  data
(i.e., dugutal information) flows depends on the ratio of bits
per  baud.  Baud rate and bit rate are equal only at speeds of
300 baud and below, and obly for FSK modulation without parity
bits.  Other  modulation  schemes sudh as  phase-sgift  keying
(PSK, BPSK, and QPSK), CLOVER, etc., stuff more bits into each
baud.  Thats why, for the sake of accuracy. I encourage you to
use  the  much less confusing bits-per-second  measure  rather
than the baud.

(Just kidding about the baubles and bangles).

Reprinted from the Digital Journal October 1994


          -----------------------------------------


                      IPS WEEKLY REPORT
                      -----------------

                   21 OCTOBER - 27 OCTOBER

ISSUE No 43

DATE OF ISSUE: 28 OCTOBER 1994

INDICES:

DATE     21    22    23    24    25    26    27

10CM     88    86    84    82    89    93    93
A         1    18    37    24     8     8   ( 7 ESTIMATED)
T        27    37    15    15   -21     7    38


SOLAR ACTIVITY WAS VERY LOW 21ST,  AND 26TH-27TH OCTOBER,  AND
LOW 22ND-25TH.

THE  GEOMAGNETIC  FIELD  AT  LEARMONTH (WA)  WAS  QUIET  21ST,
INCREASING TO UNSETTLED TO ACTIVE ON 22ND.  ON 23RD THE  FIELD
WAS AT ACTIVE TO MINOR STORM LEVELS, RETURNING TO UNSETTLED ON
24TH, QUIET ON 25TH, AND QUIET TO UNSETTLED 26TH-27TH OCTOBER.

IONOSPHERIC   F2  CRITICAL  FREQUENCIES  WERE  NEAR  PREDICTED
MONTHLY VALUES 21ST-24TH OCTOBER, THEN UP TO 20 PER CENT BELOW
PREDICTED VALUES ON 25TH-26TH.  ON 27TH THE FIELD WAS ENHANCED
15-30 PER CENT DURING LOCAL NIGHT.


             FORECAST (28 OCTOBER - 03 NOVEMBER)

SOLAR:        LOW

GEOMAGNETIC:  ACTIVE  TO  MINOR STORM LEVELS  ON  30  OCTOBER,
              UNSETTLED TO ACTIVE OTHERWISE.

IONOSPHERIC:  NEAR  NORMAL  UNTIL  31  OCTOBER,  15  PER  CENT
              DEPRESSIONS EXPECTED THEREAFTER.


COURTESY OF IPS RADIO AND SPACE SERVICES


           ---------------------------------------

VK2SG RTTY DX NOTES 21 OCT 94

VK2SG RTTY DX NOTES FOR WEEK ENDING 21 OCT 1994 (BID RTDX1021)

OUR  THANKS  THIS WEEK GO TO DJ3IW AND THE CENTRAL  EUROPE  DX
CLUSTER  DB0SPC,   I5FLN,  JA3MNP,  WB2CJL,  W5KSI,  W6/G0AZT,
WA0PUJ,  WF5T,  AND  THE NJ0M NODE OF THE MINNESOTA DX  PACKET
CLUSTER NETWORK.


BANDPASS:

FRIDAY 14
0020-14085 8R1TT QSL P.O. BOX 5194, RICHMOND, CA 94805
0140-7082  8R1TT
1342-21087 3DA0CA QSL TO JON RUDY, BOX 329, MBABANE, SWAZILAND
1409-21052 8R1TT
1836-14087 PJ7/N6OXR
1949-14086 ET3SID
2053-14086 VK2KM
2250-14091 Z21HD

SATURDAY 15
0227-7090  KP2N
0334-7084  8R1TT
0341-3603  N9NCX
0819-14076 3X0DEX
0836-14085 9K2HN
1218-14085 8R1TT
1218-14088 PJ7/N6OXR
1238-14084 OH2GI
1247-14087 8R1K
1249-14083 RU3AT
1426-14091 VS6WV
1446-14084 5H3JA
1540-14087 JW0I
1558-21089 Z21HD
1647-14080 V85GA
1650-21082 ZS6ARF
1916-21092 5W1MM
2148-21092 V63AS QSL JA3JA
2347-21078 A35MW
2349-21097 VK6GOM

SUNDAY 16
0544-7035  ZL3GQ
0957-21092 TZ6FIC
1001-21091 9Q5ARJ
1004-21081 A71EY
1158-7031  5W1MM
1210-7030  V63AS
1218-21093 YB2CPO
1234-21083 8R1TT
1314-21084 OS6AA
1534-21094 KP2N
1612-21082 SV1NA
1617-21078 SV2FN
1705-21087 Z21HD
1803-14089 9K2WA
1824-21091 5W1MM
1942-21085 V63AS
2057-21086 A35CT
2303-21081 AH6JL
2311-21092 NH6XM

MONDAY 17
1208-14086 OS6AA
1223-14083 9K2IC
1231-14084 8R1TT
1238-14086 UT5PF
1642-21088 GW3SFU
2137-14084 NL7CH

TUESDAY 18
1422-14089 S53X
1458-21081 8R1TT
1635-21081 3DA0CA
1827-14088 OD5PL

WEDNESDAY 19
0017-14091 UA0SMF
0040-14086 ZP6CC
0125-14086 JT1CS
1205-14083 UX2FXF QSL VIA G3WKI
1225-14086 CU1AC
1229-14086 CU1EC
1435-14087 VQ9JB
1751-21084 8R1TT

THURSDAY 20
1257-14085 CU1AC

NOTES OF INTEREST:

NAMIBIA - THE TEAM OF N9NS,  N0AFW,  NH6UY,  AH9B,  AND WA0PUJ
WILL  OPERATE V51/ FROM 23 OCTOBER THROUGH 6 NOVEMBER.  BEFORE
AND AFTER THE CQWW SSB CONTEST,  IN WHICH THEY WILL OPERATE AS
V51T, LOOK FOR THEM ON RTTY. QSL ALL CONTACTS TO WA2FIJ.

UGANDA - PAUL,  WF5T WILL AGAIN OPERATE FROM UGANDA DURING THE
MONTH OF NOVEMBER, AS 5X1XT, ON BOTH CW AND RTTY. QSL TO WF5T.

LAOS - LOOK FOR MINORU, JA3MNP BETWEEN 20-27 OCTOBER OPERATING
AS XW3MNP. QSL TO P.O. BOX 59, KYOTONISHI 616, JAPAN.

FOR  NEXT  WEEK'S BULLETIN,  SEND YOUR BANDPASS AND  NOTES  OF
INTEREST TO LUCIANO, I5FLN AT ZS5S.ZAF.AF.

GOOD HUNTING ES 73 DE JULES W2JGR AT W5KSI.#NOLA.LA.USA.NA.

(VIA HF AMTOR)

          -----------------------------------------
Apologies, but we do not have the ARRL DX this week at time of
writing and despatching the news. Next week, we hope.

         -------------------------------------------
Society information

The Society may be contacted at :  PO Box 860, Crows Nest 2065
Australia,   for   such  matters  as  membership  and  general
enquiries.  Enquiries  can  also  be made  by  packet  to  the
President  (Col)  VK2CTD, or the  Secretary  (Pat) VK2JPA at
VK2RWI.

News  items  may  be  sent to  Broadcast  Officer  PO  Box  60
Blacktown  2148 Australia,  or by packet to VK2JPA at  VK2RWI.
Email addresses for the Broadcast Officer are :

patl(at)pitt.conmusic.su.oz.au

The  Society welcomes news items on any digital subjects  from
anywhere in the broadcast coverage area.  We are looking  for-
ward  to news from your areas to let other  amateurs know what
you are doing in the hobby. Hope to hear from you.

73s de Pat VK2JPA Broadcast Officer
That concludes the broadcast for this morning/evening.

--
Dave Horsfall (VK2KFU) | [e-mail] | VK2KFU @ VK2AAB.NSW.AUS.OC | PGP 2.6
Opinions expressed are mine. | E7 FE 97 88 E5 02 3C AE  9C 8C 54 5B 9A D4 A0 CD

------------------------------

Date: Wed, 2 Nov 1994 18:13:33 GMT
From: [e-mail] (Greg Dolkas)
Subject: Contacting the MIR. Help!

Zack Lau (KH6CP) ([e-mail]) wrote:
: Gary's analysis makes sense if you are interested maximizing the
: time you can work MIR, as opposed to just working them once.
:
Sorry, Zack, but I have to agree with Gary.  In my experience working RS-10
over the past few years, a simple vertical antenna works best.  I use a
home-brew 5/8 J-pole most of the time, with 10-30 watts.  On really bad
passes (close to the horizon) I switch over to a 5 element beam aimed at
the horizon.  In the 50+ contacts made, I've experienced a high angle dropout
once or twice, when the satellite was *right* overhead (89.something degrees).
Those happen very rarely, and the dropout lasted less than a minute.

The problem with working satellites is that they're like the proverbial
potato chips - once you've worked them you're hooked!  The best advice is to
get a setup which will maximize longer term enjoyment of this aspect of the
hobby.

Now, for the original question - I believe I read in SpaceNews that MIR has had
some power supply problems recently.  There was a statement that one of the
inhabitants was only on the air occasionally over Europe, which I extrapolate
to there not being any ham activity over the rest of the planet.  Your antenna
and radio may be working just fine, but it takes two for a QSO.  Be patient;
they'll get things working again on their end.  In the mean time, you might
try some of the other Low Earth Orbit satellites - RS-10 or AO-27 would be
good candidates (for phone; I'm not up on packet sats yet).

Greg  KD6KGW

------------------------------

Date: Fri, 04 Nov 94 11:20:07 -0600
From: Mark Tomany <[e-mail]>
Subject: EXAM Software

Gu> From: [e-mail] (GuyK965862)

Gu> What is a good computer program I can get to help me study for the TECH
Gu> licence.  I am already a NOVICE!!

   Check with your local Ham BBS and grab a copy of AUTOEXM.ZIP.  The
program name is Autoexam, and it generates random questions from the
current question pool...  I used it, and it works very well (at least for
me!)...

73 es good luck

Mark   N9WYS


... Computers are tools, but the Amiga is an instrument.

------------------------------

Date: Sun, 6 Nov 1994 09:28:03 +0000
From: [e-mail] ("Anthony R. Gold")
Subject: GPS/PC Interface help

In article <[e-mail]>
           [e-mail] "Mike Ligeza" writes:

>
> I have a Garmin GPS receiver which I would like to interface with my PC.
>
> Does anyone have any info on the NMEA 0183 protocol referenced in the
> manual? Or is there a more appropriate SIG where I might pose this question?

Try posting this to sci.geo.satellite-nav where the experts hang out and
where you will get loads of help. Even [e-mail] chip in from time
to time. Or email them at that address.

--

Tony - G3SKR / AA2PM / [e-mail]

------------------------------

Date: Wed, 02 Nov 94 20:19:25 +0300
From: "Dmitry E. Sorokin" <[e-mail]>
Subject: Ham stores in London ?

Hi,
  Can anyone let us know where can we find the hamradio related places in
London ? Our friend will be there from the 10th of November and we'd like
to prepare some information for him. We are looking for:
    - ham radio magazines;
    - catalogues of firms delivering radio rigs and homebrew kits;
      (our preferable interest is packet radio)
    - ham stores to buy;
    and just
    - radio amateurs to talk.

Thank you very much.
Dmitry.

------------------------------

Date: 4 Nov 1994 10:23:39 GMT
From: [e-mail] (Waldemar Kebsch)
Subject: How good is 10 db 2 meter yagi?

In <397j0m$[e-mail]> [e-mail] (Simon Kwan) writes:

< nothing > :-)

That are some parameters you should know for a comparsion with other antennas:

- forward gain (*1)
- forward to backward ratio (*1)
- view angle (-3db) horizontal (*1)
- view angle (-3db) vertical (*1)
- typical (V)SWR window < 2:1
- typical impedance
- max. power (FM, SSB, CW, RTTY, etc.)
- boom length
- number of elements
- wind load/wind resistance (*2)
- $$

 *1 = A diagram would be very fine and gives you a lot of information!
      Much more then numbers .. :-)
      And ...: what are they talking about: db, dbi, dbm?

 *2 = I don't know the right word in English: "Last night we had a storm
      (>100MpH)! All HAMS running the antenna 'xyz' should order a new one. :-)

Have fun ..

73 de DK3VN
Waldemar
--
Waldemar Kebsch  (dk3vn),  c/o  Siemens Nixdorf Informationssysteme AG,
33106 Paderborn, Federal Republic of Germany, E-Mail: [e-mail]

------------------------------

Date: Fri, 4 Nov 1994 08:52:53 GMT
From: [e-mail] (David Stockton)
Subject: Maws Coad and Spelinge

Mr. Black ([e-mail]) wrote:

: Derek Wills <[e-mail]> wrote:

<snip>
: >Readers are invited to collect their own statistics.

: No invitation is necessary.  Many of the people on this group don't seem
: to be the type that would swallow unsubstantiated bullshit.


    Derek is of British origin.  I think he still uses a British
keyboard, with one or two special symbols on it - one of which prints in
ascii as an invisible smiley.  You just have to guess at the size of the
smirk on his own face, too.

  Spelling checkers, in the hands of those whom you'd think most need
them, turn into malapropism generators. Just look at the frequency of
its/it's  they're/there/their from people using their native language.


    Cheers
           David  GM4ZNX



------------------------------

Date: Fri, 04 Nov 94 11:31:01 -0600
From: Mark Tomany <[e-mail]>
Subject: Motorola Amateur Group????

IJ>I am trying to find out if there is such a thing as a Motorola User Group
IJ>-- you know, hams who use Motorola gear, etc...

FM> I understand that the Motorola plant in Ft. Lauderdale, has its own Ham
FM> club with 2 Meter repeater.  I don't know if they are on Internet,
FM> though.  They used to have a periodic "Flea Market" on the company
FM> parking
FM> lot.

FM> I understand that the radio used by the Astronauts for the "SAREX"
FM> experiment, is from the Ft. Lauderdale Motorola plant.  Of course, it is
FM> probably quite customized!


    I could never understand why Motorola shunned the Amateur market...
Lord knows there's enough of their equipment that's been modified for HAM
use...  Then again, could be the cost.  ;-)

73 de N9WYS

...    Mac error message:    Like, Dude, something went wrong...

------------------------------

Date: Sun, 6 Nov 1994 10:36:05 GMT
From: [e-mail] (Clay Irving)
Subject: NYC MARATHON

In article <[e-mail]> Joe Herman <[e-mail]> writes:

>Does anyone know if there will be any amateur radio activity wityh relation to
>the New York City Marathon tomorrow morning?  If so, could someone please Mail
>me the freq's?  2m preferred - thanx in advance

Oh, I think there will be a little amateur radio activity!  Approximately 400+
volunteer amateur radio operators provide emergency communications for the
marathon.  I think there are 16 nets (logistics, medical, runner-drop out,
etc) operating on several 2m and 440 frequencies, but I don't have the exact
frequencies.



    .-.                                                               .-.
   /   \           .-.                                 .-.           /   \
  /     \         /   \       .-.     _     .-.       /   \         /     \
-/--Clay Irving-(N2VKG)\-----/---\---/-\---/---\-----/-----\-------/-------\--
    [e-mail]      \   /     `-'   `-'     \   /       \     /
    New York, New York   `-'                     `-'         \   /
            `-'                                               `-'

------------------------------

Date: 6 Nov 1994 14:55:56 GMT
From: [e-mail] (John Hughes)
Subject: R.S. 2 Meter Amplifier???

They have one in their catalog.  I got tired of waiting for it to
be delivered, and got a rfc 2-23 instead for about the same price (at
a hamfest).

73...John, KE4RRG

------------------------------

Date: Thu, 3 Nov 1994 22:20:02 +0000
From: [e-mail] ("Anthony R. Gold")
Subject: repeaters and intermodulation

In article <[e-mail]>
           [e-mail] "Allen Wallace" writes:

>
> Didn't I read an intermodulation artical in a QST a few years back? Does
> anyone have any good references or suggestions?
>

I suggest you get the duplexer cavity filters re-aligned.
--

Tony - G3SKR / AA2PM / [e-mail]

------------------------------

Date: Wed, 2 Nov 1994 16:04:17 GMT
From: [e-mail] (Michael L. Ardai)
Subject: Ten Tec T*Kits 2M Amp

A while back, I flamed Ten Tec about their vaporware kits.  While I am
still waiting for the 2M transciever, the 2M amp kit showed up about
three weeks after I ordered it.  Now that I have actually built one of
their kits, I would like to point out the quality of the kit and instructions.

The kit is a complete 2M amp 5Win -> 30Wout, and can be wired for either
class AB or class C operation by changing two jumpers.  It runs on 12 (13.8)
volts and pulls 4-5 amps at full power.  A nice two-hour kit (for an
experienced kit builder).  I would just recommend two changes - add a power
switch, and add a jumper from the mounting screw of the SO-239 to the ground
plane of the board.  It worked the first time, and tuneup was a breeze,
just needing a milliameter, wattmeter, dummy load, and a diddlestick (plus
the radio and supply, of course).

I have also purchased the Ramsey kit (I am evaluating them for the Boston
ARC's next kit-building workshop), and the Ten Tec is by far the better kit.

(Quote from the Ramsey manual: "Cut off a 1-inch piece [of the supplied
magnet wire] and form it as shown around the handle of a tool" - A tool?
Eyeglass screwdriver? Sledgehammer??? :-)

/mike

Newsgroups: rec.radio.misc
Subject: Ten Tec T*Kit 2M Amp
Summary:
Followup-To:
Distribution: world
Organization: Utopia Planetia Shipyards - Mars
Keywords:

A while back, I flamed Ten Tec about their vaporware kits.  While I am
still waiting for the 2M transciever, the 2M amp kit showed up about
three weeks after I ordered it.  Now that I have actually built one of
their kits, I would like to point out the quality of the kit and instructions.

The kit is a complete 2M amp 5Win -> 30Wout, and can be wired for either
class AB or class C operation by changing two jumpers.  It runs on 12 (13.8)
volts and pulls 4-5 amps at full power.  A nice two-hour kit (for an
experienced kit builder).  I would just recommend two changes - add a power
switch, and add a jumper from the mounting screw of the SO-239 to the ground
plane of the board.  It worked the first time, and tuneup was a breeze,
just needing a milliameter, wattmeter, dummy load, and a diddlestick (plus
the radio and supply, of course).

I have also purchased the Ramsey kit (I am evaluating them for the Boston
ARC's next kit-building workshop), and the Ten Tec is by far the better kit.

(Quote from the Ramsey manual: "Cut off a 1-inch piece [of the supplied
magnet wire] and form it as shown around the handle of a tool" - A tool?
Eyeglass screwdriver? Sledgehammer??? :-)

/mike


--
\|/     Michael L. Ardai     N1IST             Teradyne ATB, Boston MA
-*- -------------------------------------------------------------------------
/|\     [e-mail]          [e-mail]

------------------------------

Date: Sun, 6 Nov 1994 11:00:31 GMT
From: [e-mail] (Gary Coffman)

References<[e-mail]> <[e-mail]>, <[e-mail]>
Reply-To: [e-mail] (Gary Coffman)
Subject: Re: Subject: W1AW steps on others?

In article <[e-mail]> [e-mail] (Zack Lau (KH6CP)) writes:
>David Stockton GM4ZNX  ([e-mail]) wrote:
>:   My UK licence requires me to have means of receiving on all
>: frequencies that I transmit on. Is there anything similar in the US? it
>: seems a sensible requirement.
>
>Actually there isn't.  Ten Tec actually sold the 2510 Mode B satellite
>station, which transmitted on 435 and converted 2 meters to 10 meters.
>See the October 1985 issue of QST for a product review.
>
>I'm not sure how sensible the requirement is on the millimetric bands,
>like 241 GHz.  I'd consider it perfectly acceptable for someone to get
>their transmitter going first, perhaps aligning it with some sort of
>waveguide filter/detector, and then working on a usable receiver after
>he has some known signal source (the transmitter).  In some areas,
>it might even make sense to set up a beacon and see who can hear it
>first.

Let me echo Zack here. There's no rule specifically against the
practice, aside from the catchall of "good amateur practice". I
think that there are cases where, as Zack indicates, having the
ability to radiate before having the ability to monitor, can be
considered good amateur practice. I don't think that's the case
any longer on 2 meters or 70 cm, and probably not at 1.2 GHz or
2.3 GHz either for analog operations.

As an aside, the issue of terrestrial repeaters is somewhat special in
that monitoring the repeater output can usually substitute for monitoring
the input frequency because they are generally functionally equivalent.
That isn't typically the case with satellite operations because local
signals may not be repeated sufficiently well by the satellite to be heard
successfully. Thus I consider it good amateur practice to monitor the
uplink before starting a communication when using the amateur satellites.
(I would agree that terrestrial operations in the footprint are a violation
of the bandplan, so the terrestrial operators have to share culpability
in this regard. But I think practices should be used by both parties to
minimize interference where practical.)

Beacons also fall into a special category in that they are permitted
*one way* transmissions. Operating satellite is not a one way activity.
Through analog transponders, it can be considered a form of split frequency
operation. How the FCC feels about the practice may differ.

The digital sats are another matter that falls into a grey area. I'm
not at all sure how to deal with that issue. On the one hand, I'd
like to say that automatic uplink channel monitoring for carriers
should be used, but I'm not sure that's entirely practical for amateurs
at this time. It is channelized operation, and so perhaps the onus
should fall more strongly on terrestrial users to follow the bandplan
in that case, IE the satellite operator has no other choice of frequency
in the digital case, contrary to the case of analog transponder operations
where moving a few kHz is practical.

Gary
--
Gary Coffman KE4ZV          |    You make it,     | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems |    we break it.     | emory!kd4nc!ke4zv!gary
534 Shannon Way             |    Guaranteed!      | [e-mail]
Lawrenceville, GA 30244     |                     |

------------------------------

Date: Fri, 4 Nov 1994 02:20:33 GMT
From: [e-mail] (Jeffrey Herman)

References<[e-mail]> <[e-mail]>, <397eb5$[e-mail]>
Reply-To: [e-mail]
Subject: Re: Real Hams

[e-mail] (Lyndon Nerenberg) writes:

>[e-mail] (Jeffrey Herman) writes:

>>Rather, you should study the history of amateur radio; without
>>the ARRL lobbying for us over the last 70 or so years we wouldn't
>>exist today. Surely if you have any interest in this hobby you
>>wouldn't mind reading a bit about our history, no?

>What, specifically, did the ARRL do to ensure the continued existence
>of Amateur Radio in Spain? Sweden? or Canada for that matter?
>
>Don't confuse your *opinions* with actual history.
>
>--lyndon  VE7TCP (licensed for some number of years that isn't relevent
>          to this discussion)

Someone else already provided a fine answer to your question (funny
how followups arrive days prior to the original article - why is
that?), but I might add that the radio pioneers at the turn of
the century were scattered about in many countries, and their
government's were able to see first hand the important role
radio and radiomen could play in the future of communications.
Those experimenters were the amateurs of the day since radio was
in its infancy, and thus there were no professionals at that point
in time.

These are not my opinions. I've taken the time to read of the
history of radio, since operating CW provided for my livelihood while
serving in the US Coast Guard. Certainly, one should know the history
of one's profession.

Jeff NH6IL

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End of Info-Hams Digest V94 #1194
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