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Info-Hams Digest            Sun, 13 Dec 92       Volume 92 : Issue 1306

Today's Topics:
                     10m open to no-code-Tech???
                   [ANS] 2c43 tube wanted (2 msgs)
              Adv. Radio Devices HF Linear Parts: Wanted
                  Best 2m compact HT? Help Quickly!
        Daily Solar Geophysical Data Broadcast for 12 December
       Has anybody heard of a KR-10 antenna rotator controller?
                   Icom IC-02E modifications needed
                       IRF 511 as RF Power Amp
                       Milwaukee 2m frequencies
                    rsgb gb2rs news 13th december
                        Wanted: Icom 901 mods

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: 11 Dec 92 15:45:15 GMT
From: swrinde!gatech!pitt!darth!n3eop!paul@network.UCSD.EDU
Subject: 10m open to no-code-Tech???
To: info-hams@ucsd.edu

pcl@engr.uark.edu (Peter Laws) writes:

> Amazing what you can find in there.  Fer instance: when is it
> *permissible* to encrypt your transmission in order to obscure it's
> meaning?

When you are a telecommand station controlling a station in space 
operation (a satellite).

Back at you:

When is it legal for two earth stations to encrypt their transmissions to 
each other?

HINT:  You have to think about this one...  it's not listed in the book 
in the manner that I have stated it.





(Answer next page...)



















When the encryption's primary purpose is not to obscure its content.  
Compression is one form.

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

Date: 13 Dec 92 04:40:17 GMT
From: news-mail-gateway@ucsd.edu
Subject: [ANS] 2C43 tube wanted
To: info-hams@ucsd.edu

>Need help finding a source for a 2C43 tube.
>tnx es 73 de Jack, K9CUN
>
Try WA3NAN, The Goddard Space Center Radio Club.  They have
a gah-zillion tubes of rare nature.

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

Date: Sun, 13 Dec 1992 05:57:02 GMT
From: usc!zaphod.mps.ohio-state.edu!rpi!cary115.its.rpi.edu!mellob@network.UCSD.EDU
Subject: [ANS] 2c43 tube wanted
To: info-hams@ucsd.edu

 If Goddard Space Center Radio Club doesn't have it, try

			Fair Radio Sales
			P.O. Box 1105
			Lima, OH  45802

		FAX: 419-227-1313  TEL: 419-223-2196/227-6573

 I do remember seeing a 2c42 in their catalog but I don't know about a 2c43.

				-Brett Mellor

 

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

Date: 12 Dec 92 23:43:03 EST
From: usc!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!ohstpy!garland@network.UCSD.EDU
Subject: Adv. Radio Devices HF Linear Parts: Wanted
To: info-hams@ucsd.edu

WANTED: Spare parts for Advanced Radio Devices 230A/C HF linear amplifiers.
Especially LCD displays, circuit boards, custom parts.

Jim W8ZR

(614)548-7277

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

Date: Sun, 13 Dec 1992 00:26:42 GMT
From: swrinde!zaphod.mps.ohio-state.edu!uwm.edu!psuvax1!ukma!miles@network.UCSD.EDU
Subject: Best 2m compact HT? Help Quickly!
To: info-hams@ucsd.edu

I am going to order a 2 meter comapct HT in the next few days.
Please help me decide on which one. Which is the best?
I am looking at the:

 Yaesu FT415 @ $299
 Alinco DJ1T/HP (?) @ $309
 Icom IC2PAT (?) @ $329
 Standard CA168 (?) @ $299

sorry about non-exact model numbers, all from memory.
and also the Kenwood H28 (?) @ $339

which should I buy?
thanks in advance!!

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

Date: 13 Dec 92 10:18:59 GMT
From: news-mail-gateway@ucsd.edu
Subject: Daily Solar Geophysical Data Broadcast for 12 December
To: info-hams@ucsd.edu

!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 347, 12/12/92
10.7 FLUX=165.6  90-AVG=134        SSN=179      BKI=2101 2221  BAI=004
BGND-XRAY=B5.2     FLU1=1.3E+06  FLU10=1.1E+04  PKI=2001 2222  PAI=006
  BOU-DEV=018,006,006,005,012,012,010,-5506   DEV-AVG=009 NT     SWF=00:000
 XRAY-MAX= C2.6   @ 1552UT    XRAY-MIN= B4.6   @ 1740UT   XRAY-AVG= B6.2
NEUTN-MAX= +002%  @ 2145UT   NEUTN-MIN= -003%  @ 2050UT  NEUTN-AVG= +0.0%
  PCA-MAX= +0.1DB @ 2305UT     PCA-MIN= -0.3DB @ 1510UT    PCA-AVG= -0.0DB
BOUTF-MAX=55422NT @ 0257UT   BOUTF-MIN=55396NT @ 1847UT  BOUTF-AVG=55415NT
GOES7-MAX=P:+134NT@ 1834UT   GOES7-MIN=N:+006NT@ 1007UT  G7-AVG=+089,+026,+011
GOES6-MAX=P:+151NT@ 1834UT   GOES6-MIN=E:-014NT@ 2237UT  G6-AVG=+105,-007,+031
 FLUXFCST=STD:170,170,175;SESC:170,170,175 BAI/PAI-FCST=010,007,005/010,010,010
    KFCST=2233 3322 2223 3322  27DAY-AP=013,007   27DAY-KP=3222 4433 3122 2222
 WARNINGS=*SWF
   ALERTS=**245STRM:2202-2346UTC
!!END-DATA!!

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

Date: 13 Dec 1992 01:26:53 GMT
From: dog.ee.lbl.gov!overload.lbl.gov!agate!agate!usenet@network.UCSD.EDU
Subject: Has anybody heard of a KR-10 antenna rotator controller?
To: info-hams@ucsd.edu

Hi Folks:
I've been using a Macintosh program called OrbiTrack to generate 
satellite pass timings. The OrbiTrack documentation mentions that
it can control a KR-10 controller (i.e. it will control antenna
pointing in real time). I've nosed around a bit and haven't found
any other mentions of the KR-10 controller. I do have a letter in
to the software's author. Naturally I couldn't resist the urge to
get a quick response from the Usenet! 8) If you are burning up to
hear about OrbiTrack or the KR-10 controller, PLEASE send me email
and I'll get you any definitive information that comes into my
possession. So, does anybody know who makes the KR-10? Any comments,
pro or con, about it effectiveness? Thanks for your help!

Will Marchant                   Center for Extreme Ultraviolet Astrophysics
marchant@cea.berkeley.edu       University of California
KC6ROL@WA6HAM.#NOCAL.CA.USA.NA  2150 Kittredge St., Berkeley, CA 94720 USA

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

Date: Sat, 12 Dec 1992 22:07:04 GMT
From: mcsun!news.funet.fi!aton.abo.fi!usenet@uunet.uu.net
Subject: Icom IC-02E modifications needed
To: info-hams@ucsd.edu

	I would like to expand frequency range of my brand
	new very old (serial number below 2000!) IC-02E to
	receive, among other freq's, Meteosat on 130..140 MHz
	range. 

	All modification info I've so far seen is for the 
	IC-02AT or -02A. Is there anyone in "netland" who
	has been working with an old 02E? I would assume the
	modifications are nothing special, just some diodes
	to add/remove here and there, and perhaps some undocumented
	jumper wires etc....

				73 and thanks

					Mika OH1NZQ
		



 -------------------------------------------------------------------------
 Mika Suoranta, Leirikatu 11, SF-20360 Turku, Finland, tel. +358-21-382637
 Internet e-mail MSUORANTA@FINABO.ABO.FI Packet Radio OH1NZQ@OH1RBI.FIN.EU
 -------------------------------------------------------------------------
                                                                          

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

Date: 13 Dec 92 04:24:25 GMT
From: swrinde!cs.utexas.edu!zaphod.mps.ohio-state.edu!uwm.edu!ogicse!cs.uoregon.edu!news.uoregon.edu!news.u.washington.edu!milton.u.washington.edu!slovell@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!  
When I build the circuits in these articles this capacitance looks 
like a .001 uF shunt across the input.  Even the 511's lower input 
C is hardly insignificant -- it looks like 150 ohms Xc at 7 MHz.  Is 
there something I'm missing here?  Hayward and DeMaw 
blithely put a 50 ohm resistance across the input, or a 200 ohm 
one with a 4:1 transformer and seem to have no problems.  
When I do the same thing my little QRP rig sees the 50 ohms in 
parallel with a big capacitive shunt, producing something far 
from 1:1 input swr.
	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

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

Date: 12 Dec 92 17:31:09 CST
From: usc!wupost!ukma!netnews.louisville.edu!wkuvx1!kallits@network.UCSD.EDU
Subject: Milwaukee 2m frequencies
To: info-hams@ucsd.edu

I will be spending some time in the Milwaukee area in January-February
1993.  Can anyone give me some local 2 meter repeater and packet
frequencies?  Any help would be appreciated.

                                           Thanks,
                                           Tim Kallio

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

Date: Sun, 13 Dec 1992 03:48:44 +0000
From: pipex!demon!tedb.demon.co.uk!ted@uunet.uu.net
Subject: rsgb gb2rs news 13th december
To: info-hams@ucsd.edu

Good morning. It's Sunday the 13th of December and here is the GB2RS news
broadcast, prepared by the Radio Society of Great Britain.

First the headlines:- The RSGB's AGM took place a week ago and we have the
RSGB Council election result. Later in this week's bulletin we have the usual
solar and propagation news, which includes details of the Geminids meteor
shower which peaks today.

The RSGB's 66th Annual Meeting took place on Saturday the 5th of December in
Central London. One hundred members attended what has been described as the
most positive and friendly meeting for many years. The result of the RSGB
Council election was announced as follows:

For the three Ordinary vacancies -

G R Morris, GW1ATZ, received 695 votes; T I Lundegard, G3GJW, 1352 votes; J
Bazley, G3HCT, 1355 votes; F S G Rose, G2DRT, 734 votes; J Greenwell, G3AEZ,
1322 votes. Messrs Lundegard, Bazley and Greenwell were declared elected. For
the vacancy in Zone D - P W Mayer, G0KKL, received 66 votes and J N Gannaway,
G3YGF, 215 votes. Mr Gannaway was declared elected.

Amongst the awards presented after the AGM were the Founders Trophy for
services to the Society which went to Roger Western, G3SXW, for his work prior
to the RSGB Strategy Conference, and three Certificates of Merit which went to
Pat Hawker, G3VA for his contributions to amateur radio literature for many
years; to Kurt Davies, W8PTA, for assistance to the Society at the Dayton
Hamvention; to Pop Seymour, G3GNS, for 25 years of slow Morse transmissions;
and S H Foster, GI3GAL for 25 years reading the GB2RS bulletin. Four awards
went to the writers of RadCom articles: The Ostermeyer Trophy was awarded to
Mike Grierson, G3TSO, for A Miniature 80-metre SSB Transceiver; the
Courtney-Price Trophy to Les Moxon, G6XN, for All Band Beam Antennas; the
Wortley-Talbot Trophy to Bob Rylatt, G3VXJ, for The EXJAY Multiband Antenna
System; and the Norman Keith Adams Prize to Geoffrey Billington, G3EAE, for An
Impedance Diagram for Transmission Lines. The Minutes of the AGM and a report
on the nformal session will be published in Radio Communication as soon as
they are available.

The latest news on the Pentland South Pole Expedition is that Sir Ranulph
Fiennes and Dr Mike Stroud are still on schedule, having walked more than 300
miles across the Antarctic to their present position which is 4,000 feet above
sea level. Their sledges still weigh over 400lbs each but the explorers' own
weight loss is still low at only about 7lbs each. Radio links are good and
VP8/GB4MSS is operating from the expedition base location at 80 degrees 18
minutes South, 81 degrees 21 minutes West at an altitude of 2,860 ft. Links
between Antarctica and UK are OK. The Inmarsat satellite has been accessible
for 2 to 3 hours a day which is remarkable as no-one has accessed Inmarsat
this far south before.

Sheila Johnson, G7GJC, daughter of Southampton GB2RS Newsreader Peter, G8LVC
will be presented with her Duke of Edinburgh Gold Award at St James's Palace
this Tuesday the 15th of December. Sheila sat the Radio Amateur's Examination,
as part of her training towards the award which will be presented by His Royal
Highness the Prince Philip, Duke of Edinburgh, KG, the Patron of the RSGB.

There has been a very encouraging response to the request in the December's
RadCom and via GB2RS for Radio Amateur's views on a UK class of HF licence
which does not require a Morse qualification. Anyone who has not yet responded
may wish to read the article A Code-Free HF Licence on page 7 of the December
edition of RadCom. Comments should be sent to: The RSGB HF Committee via RSGB
HQ, Lambda House, Cranborne Road, Potters Bar, Herts EN6 3JE.

The fault on the Wrotham 144.925MHz Beacon, GB3VHF, has been traced to the
output amplifier, which is nearly 20 years old and is probable beyond economic
repair. The beacon will now be operated without it and is expected to be back
on the air before the end of the year. The power will, therefore, be reduced
from 50 to 10 watts ERP until further notice.

Now some items of HF DX news from the weekly RSGB DX News Sheet which is
edited by Brendan McCartney, G4DYO. From Rotuma Island, 3D2AG, is active from
now until the end of December. From Costa Rica, N9IUO will sign TI2IDX from
Saturday the 12th of December, until Wednesday the 6th of January 1993, on the
10 to 160 metre bands using CW and SSB. From Haiti, HH2PK is often active on
160 metres from 0100 to 0300GMT on 1825kHz, CW or 1842kHz, SSB. From Aruba,
P4/K5BDX will be active from now, until next Tuesday the 15th of December.

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

Date: 13 Dec 92 05:43:29 GMT
From: swrinde!zaphod.mps.ohio-state.edu!darwin.sura.net!jvnc.net!netnews.upenn.edu!eniac.seas.upenn.edu!depolo@network.UCSD.EDU
Subject: Wanted: Icom 901 mods
To: info-hams@ucsd.edu

Looking for any and all mods for the Icom 901, particularly expanding 
UHF receive on the stock 440 band unit.  Any help would be appreciated.

								--- Jeff

--
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
 Jeff DePolo  WN3A              Twisted Pair: (215) 337-7383 
 depolo@eniac.seas.upenn.edu    RF: 443.800+ MHz    442.700+ MHz    24.150 GHz
 University of Pennsylvania     

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

Date: (null)
From: (null)
Rally news now, there are three events we know of for today, Sunday, the 13th:
The Centre of England Christmas Radio, Computer, Electronics and
Communications Rally is being held at the National Motorcycle Museum, near the
National Exhibition Centre, Birmingham. Take junction 6 off the M42 motorway.
Doors open at 11.00am or 10.30 for disabled visitors. There will be trade
stands and refreshments. There is ample car parking space. Talk-in will be on
channel S22.

The Leeds and District Amateur Radio Society Rally is being held at the Pudsey
Civic Centre, Dawsons Corner, Pudsey, Leeds. The Centre is located near the
junction of the Leeds Outer Ring road with the Bradford road. Doors open at
10.45am and there will be all the usual facilities.

The Verulam Amateur Radio Club's Christmas Rally is being held at the
University of Hertfordshire, formerly the Hatfield Polytechnic which is
located just off the A1(M) and A414 South of the Hatfield tunnel. Doors open
at 11.00am. There will be the usual trade stands and a bring and buy stall. As
an added attraction Robin Page-Jones, G3JWI, will be signing copies of his new
book A Radio Amateur's Guide to EMC, published by the RSGB.

We know of no rallies for next weekend, Saturday the 19th, and Sunday the 20th
of December.


Contest news:

During this weekend there is the ARRL 10 Metre Contest, from 0000  on Saturday
the 12th, to 2400 on Sunday the 13th. See December's RadCom page 15 for
further information. The next RSGB Contest is the 7MHz LF Cumulative for
Sunday the 27th of December, from 1000 to 1200GMT. See December's RadCom page
62 for further details. On the VHF front, the RSGB 70, 144 and 432MHz Fixed
Station Contest is scheduled to run from Saturday the 26th, to Tuesday the
29th of December. See July RadCom for further details

And now the solar factual data:

As expected, the period from the 30th of November to the 6th of December has
seen a decline in spot counts and solar flux levels, due to the quiet side of
the sun looking our way. Despite this, there have been 4 M type flares with
the biggest being an M2.6/1N on the 30th of November. There have been a number
of short wave fade outs, but at most each one only lasted a few minutes. Spot
counts meaned at only 97, and solar flux levels averaged 126 units, declining
from 140 down to 116 over the period. The geomagnetic Ap index declined from
very unsettled, down to quiet over the period and averaged 12.8 units. The
state has been nil, nothing to report, throughout the period. The radio
quality indices started well above normal on the 30th of November with the
Stavanger circuit being up to excellent, but a steady decline set in, reducing
levels to well below normal by the 4th of December, with the Tokyo, New York,
and Boulder circuits being very poor. A slow recovery was taking place by the
6th with levels almost back to normal. The aa indices, as supplied by the
British Geological Survey for the period 24th to 30th of November, were down
to very quiet with the daily averages being only 17.1 nanoTeslas about K2.
Some periods were down to only 2 nanoTeslas. Bartells rotation 2177 starts on
December 17th, and the Geminids meteor shower started on the 7th and continues
till the 16th with the peak being today the 13th.

Now the ionospheric data for Central France:

The F2 daytime critical frequencies at Poitiers as reported by Meudon averaged
10.9MHz, and the darkness hour lows 3.2MHz. There has been some spread F at
odd times, and on the 6th some blanketing E.


Now the ionospheric data for the north:

The F2 daytime critical frequencies at Ekaterinberg averaged 8.8MHz, though
they declined from 9.6MHz down to 7.6MHz by the 3rd, but had recovered to
9.4MHz by the 6th. The darkness hour lows averaged 3.0MHz. I'll repeat the
figures. Highs - 8.8 MHz; lows - 3.0 MHz.

And lastly the solar forecast:

This week, the more active side of the sun will be coming into view, solar
flux levels are expected to be about the 130s and geomagnetic activity is
expected to be quiet. MUFs during daylight are expected to reach 30MHz, and
the darkness hour lows about 18MHz.

And that's the end of the solar information.


Finally in the main news, SSL, has informed the Society that as of last
Wednesday morning, the latest callsigns issued were in the G0 S T and
G7 N X series, and Novice calls in the 20 A E and 21 B H series.


You're listening to GB2RS, the news broadcasting service of the Radio Society
of Great Britain, transmitting in the 80, 40, 6 and 2 metre bands.

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

End of Info-Hams Digest V92 #1306
******************************
Newsgroups: rec.radio.amateur.misc