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Subject: Info-Hams Digest V92 #1320


Info-Hams Digest            Wed, 16 Dec 92       Volume 92 : Issue 1320

Today's Topics:
                   2meter purchase - HELP NEEDED!!!
        Daily Solar Geophysical Data Broadcast for 15 December
                          HELP working AO-21
                     Icom 2SRA HT mod info wanted
                         INFO-HAMS SUBSCRIBE
                       IRF 511 as RF Power Amp
                         Morse code upgrading
                             NASA SELECT
                      QSL practices F6FNU, FR5DX
                              Satellite?
                 SMC: "Above and beyone the call..."
                          test ** don't read
                TS 520S: How to access new WARC bands?

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: Wed, 16 Dec 1992 05:32:23 GMT
From: usc!rpi!usenet.coe.montana.edu!news.u.washington.edu!raven.alaska.edu!news.acns.nwu.edu!casbah.acns.nwu.edu!jweiss@network.UCSD.EDU
Subject: 2meter purchase - HELP NEEDED!!!
To: info-hams@ucsd.edu

In article <thweatt.724443565@guppie12> thweatt@rtsg.mot.com (John A. Thweatt) writes:
>
>The main reason for buying this radio, is to allow phone patch service in
>case of an emergency.  I want to make sure I can get the coverage I need.
>For those of you that know the IL area, we live around Crystal Lake and
>would like to have coverage from there to Northbrook.  I understand that
>we will need to join a repeater (or maybe two) but I would like to make
>sure that this is a sufficient radio to have .........

Information about local repeaters sent directly via email.

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

Date: 16 Dec 92 09:04:23 GMT
From: news-mail-gateway@ucsd.edu
Subject: Daily Solar Geophysical Data Broadcast for 15 December
To: info-hams@ucsd.edu

!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 350, 12/15/92
10.7 FLUX=155.5  90-AVG=135        SSN=179      BKI=3223 2223  BAI=010
BGND-XRAY=B5.5     FLU1=6.8E+05  FLU10=1.1E+04  PKI=3213 2223  PAI=009
  BOU-DEV=022,012,012,022,016,013,015,020   DEV-AVG=016 NT     SWF=00:000
 XRAY-MAX= C6.9   @ 0113UT    XRAY-MIN= B4.7   @ 2005UT   XRAY-AVG= B8.7
NEUTN-MAX= +003%  @ 2110UT   NEUTN-MIN= -002%  @ 0600UT  NEUTN-AVG= +0.4%
  PCA-MAX= +0.1DB @ 2350UT     PCA-MIN= -0.3DB @ 1335UT    PCA-AVG= -0.0DB
BOUTF-MAX=55425NT @ 0456UT   BOUTF-MIN=55398NT @ 2114UT  BOUTF-AVG=55416NT
GOES7-MAX=P:+115NT@ 1744UT   GOES7-MIN=N:+002NT@ 0307UT  G7-AVG=+074,+025,+010
GOES6-MAX=P:+134NT@ 1745UT   GOES6-MIN=E:-022NT@ 0733UT  G6-AVG=+093,-006,+031
 FLUXFCST=STD:155,155,150;SESC:155,155,150 BAI/PAI-FCST=007,007,010/010,010,012
    KFCST=2223 3222 2223 3222  27DAY-AP=005,006   27DAY-KP=2111 3221 1212 3211
 WARNINGS=*SWF
   ALERTS=**245STRM:0000-2359UTC
!!END-DATA!!

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

Date: Wed, 16 Dec 1992 09:44:15 GMT
From: deccrl!news.crl.dec.com!dbased.nuo.dec.com!nntpd.lkg.dec.com!nntpd2.cxo.dec.com!nuts2u.enet.dec.com!little@decwrl.dec.com
Subject: HELP working AO-21
To: info-hams@ucsd.edu

labelle@hfglobe.intel.com (George La Belle) writes:

>	I hear the satellite at full quieting thru 80% of the pass using a
>	discone. I'm running 40 watts up with a TS-790, is this sufficient?
>	If not, why not?

40 watts into a discone is probably not sufficient power on the uplink.  I
barely make it sometimes with around 100 watts into an 18 element KLM
crossed yagi pointed at the bird.  Although you hear mobiles occassionally
getting in, they are generally weak and would be running around what you're
running, so its marginal at best.

AO-21 apparently has a switchable attenuator that is normally switched in
causing it to not hear very well.  Whereas the downlink is putting out
quite a bit of power (forgotten the transponder specs on that bird.)

Also, try about 8-10 Khz below the passband frequency on approach of the bird
dropping to 8-10 Khz above as the bird moves away from you.  I've found that
it is fairly fussy about the uplink frequency.

-tl

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

Date: Wednesday, 16 Dec 1992 00:56:57 EST
From: dog.ee.lbl.gov!overload.lbl.gov!agate!spool.mu.edu!uwm.edu!psuvax1!psuvm!ucf1vm!morrison@network.UCSD.EDU
Subject: Icom 2SRA HT mod info wanted
To: info-hams@ucsd.edu

I am thinking about purchasing the above mentioned IC-2SRA 2meter
handi-talkie.  Does anyone know if this rig can be modified for Tx on
the 440MHz band?  The ads I have seen mention a 440 equivalent is
available.

Also if anyone has general remarks about this radio, I would like to hear
about it (good or bad).  Essentially is it worth it?  The extended Rx is
intriguing (25MHz to 905MHz spec'd) but for the price a lack of 440 Tx
is a downside.

Thanks.          Reply to morrison@ucf1vm.cc.ucf.edu or to this group.

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

Date: Wed, 16 Dec 1992 08:42:38 GMT
From: swrinde!ringer!lonestar.utsa.edu!sbooth@network.UCSD.EDU
Subject: INFO-HAMS SUBSCRIBE
To: info-hams@ucsd.edu

Subscribe.

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

Date: Tue, 15 Dec 1992 02:06:28 GMT
From: swrinde!sdd.hp.com!hpscit.sc.hp.com!hplextra!hpfcso!hpfcmgw!perry@network.UCSD.EDU
Subject: IRF 511 as RF Power Amp
To: info-hams@ucsd.edu

>    	In the April '89 QST Doug DeMaw wrote about using 
>    the IRF 511 Mosfet as a RF Power amplifier.  Wes Hayward then 
>    wrote an excellent follow-up article in the Nov '89 QST.  I'm 
>    wondering if anyone has experimented with these transistors and 
>    circuits.  Specifically,  I'm puzzled by the fact that neither 
>    DeMaw nor Hayward seems to have run into trouble with these 
>    transistors' considerable input capacitance -- the 511 has about 
>    100 pF and the IRF 530 that Hayward used has about 900pF!  
>
>    	Also, any thoughts, anecdotes, or suggestions regarding 
>    these transistors' tendency toward self-destruction from static 
>    electricity, too high Vgs, and parasitic oscillations?
>    	Thanks for your help.
>    	Sherm Lovell, WY7F

I've often lusted after the new power MOSFETS too.  I think you'd have
to build an input circuit to deal with the input capacity you've
discovered.  I don't know if input capacity is specified on these
devices - they are meant for DC/audio, where it isn't a problem.
Therefore, the parts may not be interchangeable.  (Basically, I think
DeMaw is in drugs on this one if he didn't include something to resonate
the input capacity.  Or, maybe this was meant for QRP stage where high
SWR is a don't-care.)

Or go one better.  Use one of the 500v VDS MOSFETS.  Feed it directly
from the mains (do you know you have a multi-KVA transformer that
supplies 240 VCT?  :-) Current is low, the power supply is cheap.
Passing it through a 1:4 unbal is a smaller proposition than the big
clunky power supply transformer.

Comments?

Perry Scott
AA0ET

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

Date: 15 Dec 1992 22:33 PST
From: gumby!destroyer!cs.ubc.ca!unixg.ubc.ca!erich.triumf.ca!bennett@yale.arpa
Subject: Morse code upgrading
To: info-hams@ucsd.edu

In article <14570562@hpnmdla.sr.hp.com>, alanb@hpnmdla.sr.hp.com (Alan Bloom) writes...
>In rec.radio.amateur.misc, gcouger@olesun.okstate.edu (Gordon Couger) writes:
> 
>>Learning code for me was very difficult. Actually using code is a lot
>>more fun to me than listing to a computer spew out code. 
> 
>A key point.  CW tapes are probably the best way to go from 0 to 5 wpm,
>but they sure do get boring after awhile.  I recommend you get on the 80
>or 15 meter Novice band as soon as you have the privileges, and get

I would strongly recommend NOT aiming for 5WPM, to get a novice license, then
trying to work up.  You should start at 10 - 12 WPM, learning a few letters at
a time.  It will be little harder to learn this way, but you will have (nearly)
full priveledges immediately.

At 5 WPM, you can copy by essentially "looking it up in a table", even if the
table is all in your head. This method won't work over 8 - 10 wpm, so you have
to re-learn the code, with a new method, to get over this speed.  Learning
initially at the higher speed avoids the need to re-learn as you speed up
(although there may be another transition at a higher speed).  The only problem
with learning at a high speed, is that it may be hard to copy 5 wpm!

Peter Bennett VE7CEI                | Vessels shall be deemed to be in sight
Internet: bennett@erich.triumf.ca   | of one another only when one can be
Bitnet:   bennett@triumfer          | observed visually from the other
TRIUMF, Vancouver, B.C., Canada     |                          ColRegs 3(k)

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

Date: Wed, 16 Dec 1992 05:26:54 GMT
From: swrinde!sdd.hp.com!ux1.cso.uiuc.edu!news.cso.uiuc.edu!uxa.cso.uiuc.edu!jtg0707@network.UCSD.EDU
Subject: NASA SELECT
To: info-hams@ucsd.edu

Does anyone out there know what the NASA SELECT frquency is?
Is that frequency regional dependent?
Someone told me once it is suppose to be somewhere on 70cm?
Thanks in advance.

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

Date: 15 Dec 92 21:44:03 GMT
From: swrinde!emory!ncratl!ncrhub2!ncrclm!tskelton@network.UCSD.EDU
Subject: QSL practices F6FNU, FR5DX
To: info-hams@ucsd.edu

Third time I've tried..hope it works this time.  Any whoooo
Would all you netters who have any experience (good or bad)
getting QSLs from FR5DX or stations managed by F6FNU please
forward to me.  Many of the local packet users and DX'ers
have complained vehemently about F6FNU and FR5DX.  This is not
a flame, just a survey.  As a baseline, we all need to remember
that overseas postage to USA is very expensive and a *green
stamp* probably does not cut it anymore.
Thanks in advance for any info. 73, Tom WB4IUX
ps:  I got my cards from FR5DX (80 - 10 meters), but I had to send
5 green stamps .... and I got the card back promptly thru the buro!


-- 

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

Date: Wed, 16 Dec 1992 01:53:55 GMT
From: pa.dec.com!engage.pko.dec.com!nntpd.lkg.dec.com!nikkor.enet.dec.com!hicks@decwrl.dec.com
Subject: Satellite?
To: info-hams@ucsd.edu

In article <1992Dec15.183937.27107@walter.cray.com>, jwl@ferrari.cray.com (Jim Lynch) writes...
>I was driving down interstate 75 somewhere in southern GA or northern FL
>and scanning across the band with my 2 meter mobile unit when I came across
>a signal on 145.990.  The stations broadcasting sounded like they were
>coming from a repeater, but I suspect that it was a satellite since it
>was only around for a few minutes.  There were people on there from 
>New Mexico and New York, to name a couple of the distant places.  
>The question is? What was I hearing?  What is the input frequency, if this
>is a repeater?  I heard it twice once during each leg of the journey.
>The first time was Saturday before Thanksgiving and the next time was
>the Sunday after.

Jim:
	Yes, it was a satellite.  AO-21.  It has a downlink on 145.897 so 
	your FM receiver picked it up on 145.990. Depending on your ability
	to tune your receiver, you can track the satellite dopler affect by
	tuning high on the approach and lower as it passes by.  

	The uplink to the transponder is on 435.016.

	You may have heard other things on the signal, too.  The current 
	schedule is currently 6 minutes of FM transponder, 3 minutes of
	pre-recorded (digitized) voice and 1 minute of telemetry (1200 
	baud AFSK packet).  

	The current voice is a female voice speaking in Slovenian as a get
	well message to YT3MV (Matjaz Vidmar) who is recovering from a
	car accident.  Matjaz helped design and build the S-Band 
	transmitters on satellites AO-16 and Dove (DO-17).

	Note that if you have a standard packet TNC, you can copy the 
	telemetry....

	Most of this info taken from AMSAT news bulletin 340.03 dated 7-Dec

	--chas hicks
	  WB0LJP

	

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

Date: Wed, 16 Dec 1992 06:10:03 GMT
From: swrinde!cs.utexas.edu!uwm.edu!rpi!usenet.coe.montana.edu!news.u.washington.edu!raven.alaska.edu!acad3.alaska.edu!ifjrs@network.UCSD.EDU
Subject: SMC: "Above and beyone the call..."
To: info-hams@ucsd.edu

A few weeks ago I saw a SALE notice on packet radio re 2 16-bit Ethernet cards, 
for which I had been looking for some time.  The owner was a ham in 
Jacksonville, FL; after talking to him LL from Alaska, I sent him a check, and 
duely received the new, uninstalled cards a week later.  Unfortunately, while 
talking to him, I'd neglected to ask him what kind of ethernet connectors they 
had--I'd just assumed they were Thin Ethernet.  They had Thick ethernet 
connections and 10baseT.  Well, OK, I thought.  My NeXT cube has a twisted-
pair type connector, so no problem, right?  Obviously, I'm a bit naive about 
Ethernet!  On doing some reading, I discovered that I would now need a 
"concentrator" to be able to hook up my 386 to my NeXT.  They turn out to cost 
~$500.

Not knowing what else to do, I called the number for Standard Microsystems 
Corporation, the manufacturer of the cards and explained the mistake I'd made.  
Understand that SMC had NO OBLIGATION WHATSOEVER to do anything 
for me--they don't sell to dealers, much less individuals, they sell only to 
distributors.  Although sympathetic, the first person I talked to didn't quite 
know how to help me, or even if they COULD help me; so she got Ike, the manager
on the phone with me.

Ike was very pleasant when I again explained how I now had two brand new cards 
which I couldn't use in my system.  After explaining to me that they really had
no way to help me, since I couldn't return the cards to a dealer, and ordinari-
ly they only accepted back cards that had some sort of malfunction...he thought 
a bit and then asked me if all I needed was cards with regular coax Thin 
Ethernet connectors.  I said yes; he said, would I be willing to pay for the 
shipping from Hauppauge, NY to Anchor Point, AK, and I said "Certainly!"  Would 
I mind sending the cards back first, before they shipped out a couple new 
cards?  (Are you kidding?!  Of course!)

I packed up the cards the next day, and exactly one week later, I received via 
UPS 2nd-day air, two 16-bit EtherCard Plus Elite16 cards from SMC--Standard 
Microsystems Corporation!

Mind you, Ike had no idea that I would send this message out to the packet 
world, or that I have a connection to the Internet--he did it, apparently, as 
a gesture of good will to his customer, however far removed that customer may 
have been from him directly.

If that isn't "above and beyond the call of duty," or "going the second mile," 
I don't know what is.  I want to publicly thank Ike and the people at SMC for 
their dedication to good customer relations, and to wish them all happiness 
during this holiday season--I know that MY holiday season has certainly been 
enhanced, and will be particularly joyful.

And I urge those of you reading this to consider SMC when you go to buy 
Ethernet or other networking cards.  Who else stands behind their product in 
such a wholehearted way, or goes to such lengths to make a customer happy?

BTW, today's my birthday; what a present!

Thanks, Ike.  Merry Christmas!

John
-- 
--

John Stannard
ifjrs@acad3.alaska.edu		BITNET:  IFJRS@ALASKA
KL7JL@KL7JL.AK.USA.NA		kl7jl.ampr.org  [44.22.0.1]

"God is the Answer!"   "Oh?? ... er, ... What was the Question?"

--

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

Date: 15 Dec 92 21:40:01 GMT
From: swrinde!emory!ncratl!ncrhub2!ncrclm!tskelton@network.UCSD.EDU
Subject: test ** don't read
To: info-hams@ucsd.edu

Sorry for bandwidth waste..running test to see if local mail fixed.
tnx! tom wb4iux
-- 

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

Date: Tue, 15 Dec 1992 01:56:18 GMT
From: swrinde!sdd.hp.com!hpscit.sc.hp.com!hplextra!hpfcso!hpfcmgw!perry@network.UCSD.EDU
Subject: TS 520S: How to access new WARC bands?
To: info-hams@ucsd.edu

After looking at how the switch sections are set up on the various RF
boards in the 520, I decided it was easier to buy a TS440.  :-)

If you want to try to mod the boards, I think you'd have to give up
two other bands.  The coils and caps look like they could be scaled.

Perry
AA0ET

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

Date: Wed, 16 Dec 1992 11:13:23 GMT
From: news.hawaii.edu!montebello!joe@ames.arpa
To: info-hams@ucsd.edu

References <1992Dec10.050057.16749@panix.com>, <1992Dec12.043158.15134@osuunx.ucc.okstate.edu>, <1992Dec15.045850.2599@elroy.jpl.nasa.gov>
Reply-To : joe@montebello.soest.hawaii.edu
Subject : Re: Morse code upgrading

	Don't forget that for those with Unix boxes there is a program
somewhat akin to supermorse in the directory:

hanauma.stanford.edu: /pub/SuperiorMorse4Unix

	If you write a driver for a new device, or have any comments about
using it, please let me know!

     /\    /\    /\/\/\/\/\/\/\.-.-.-.-.......___________
    /  \  /  \  /Hawaii Institute of Geophysics, Honolulu\/\/\.-.-....__
___/    \/    \/Joe Dellinger, Internet: joe@montebello.soest.hawaii.edu\/\.-.__
____________________________________________________
Objectivity is not an unobtainable emptying of mind |
but a willingness to abandon a set of preferences   |----> Stephen J. Gould
when the world seems to work in a contrary way.     |

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

End of Info-Hams Digest V92 #1320
******************************