bill.lumnitzer at paonline.com bill.lumnitzer at paonline.com
Tue Jul 12 16:43:38 EDT 1994

Sorry for not getting back to this sooner but my feed was disconnected for
a few days then a family vacation took precedence!

Received 6 or 8 suggestions regarding ways to improve rig isolation
in a multi-setup including the following:

    1. Bandpass filters between rig and amp.

    2. Coaxial stubs at the amplifier outputs.

    3. Antenna/Rig selection.

    4. Separate towers for each band.

1. BANDPASS FILTERS: These come in XMIT or RCV-only types. Xmit filters are
available from ICE (and elsewhere) or can be home-brewed -see K4VX'articles in
NCJ and Sept '88 QST, and the article in May? '94 QST; these designs include
both 3 and 5 pole versions. Rcv-only filters can be built per the NCJ article
by W3LPL and are a 5-pole design I think; these must be installed in the 
"receive antenna" line of your xcvr since they won't handle any power. Some
stations use both types but it seems like the 5 pole Xmit filters would give
equal performance to the 'LPL ones (ICE filters are 3 pole and have 10-15 dB
LESS rejection than 5 pole types); filters can be cascaded but results unknown.

2. COAXIAL STUBS: Coax stub filters on "tees" (type N recommended) directly at
the amplifier output on each band; sometimes these work better 1/8 wave down
the line or a few feet after the power meter. Since my antennas are remotely
switched at the tower I'm thinking of trying stubs on each line BEFORE the
relay so they can be left PERMANENTLY mounted (isn't rf leakage from good coax
at HF pretty low?). You can use either 1/4 OPEN or 1/2 SHORTED stubs (I recall
seeing an old NCJ article on this by K2TR). Separate sets of stubs tuned for
CW and SSB should be used for best results, giving 25 dB attenuation or so.
Some stations use DOUBLE stubs at the second harmonic to increase the
attenuation while others recommend one stub at both HALF and TWICE frequency
(e.g. stubs for 40/15 and 10 on the 20m station). I tried coax stubs before I
got the ICE filters and they DID help but haven't tried them yet in combination
with the filters.

Another interesting suggestion was to measure the receive power on one band
while transmitting on another. Supposedly TENS or even HUNDREDS of watts
have been found in some situations! N4KG installs protective diode-resistor
networks at the receiver inputs to guard against burnout. I plan to use my
Bird to benchmark my station and then to track improvement? after each step. 

3.  ANTENNA/RIG SELECTION: Different combinations of antennas and rigs can have
a big effect on interference. Using multiple tribanders versus monobanders 
opens the door to more severe interference and should be avoided if possible. 
I use both tribanders and monobanders but plan to confine them to two separate
towers. I'm also thinking of trying some remotely located receiving antennas
(e.g. trap vert. and inv. vee or small tribander).

Some rigs "talk" to each other more than others (e.g. two TS-940s are
purportedly worse than two TS-930s) and combinations of "synthesized" vs.
"non-synthesized" (TS-830) can be tried (or try a Drake R4C for receive).

4.  IF ALL ELSE FAILS: Several reported of having operated up to six stations
pretty much interference-free (except for 2nd harmonic) using the above
techniques with a single tower or rooftop. But this degree of success has not
been universal. In these situations Separate Towers (widely spaced) for each
band were the way to go. I have the space but not the energy to put up and
maintain all this hardware (two towers are enough!). Nothing dramatically new
came out of this except to prove that it CAN be done and there's still room
for a lot of experimentation. Now where is that 50W slug for the Bird....
73' de Bill N6CQ/3      Lewisberry, PA
(n6cq at paonline.com)


>From John Dorr K1AR" <p00259 at psilink.com  Tue Jul 12 22:09:56 1994
From: John Dorr K1AR" <p00259 at psilink.com (John Dorr K1AR)
Date: Tue, 12 Jul 94 16:09:56 -0500
Subject: 1994 CQ Contest Survey
Message-ID: <2983129723.1.p00259 at psilink.com>

Thanks to everyone who replied to my message about the CQ Contest 
Survey. As promised, attached is a copy of what we will be running in
the September issue. Feel free to be the first kid on your block to 
respond and send me your survey reply via Internet.

73 John, K1AR

                1994 CQ Magazine Contest Survey 

Your Callsign (optional):                   

Contesting Experience (years):              

1)   Do you favor the concept of limiting contest operation to
     portions of bands, thus creating "contest-free" operating

     YES       NO

2)   Who would you recommend should be the next inductee into the
     CQ Contest Hall of Fame?


3)   What do you predict the winning CQWW scores will be in the
     year 2000 for the following categories:

     Single Operator/USA SSB                          
     Single Operator/World SSB                        
     Single Operator/USA CW                           
     Single Operator/World CW                         

4)   Do you support the elimination of the traditional 59/599
     portion of contest exchanges in favor of more meaningful

     YES       NO

5)   Should the single operator category:

     A) Be limited to using only one radio?  YES       NO
     B) Be allowed to use packet spotting?   YES       NO

6)   What was your first contest operation?


7)   How did you become interested in contest operating (circle all
     that apply)?

     A) Contest Elmer
     B) Discovered contest operating while operating radio
     C) Local radio club
     D) Magazine
     E) Other                           

g?8) At what age did you start operating contests?

9)   Do contests still have the same appeal for you that they did
     when you began?

     YES       NO
10)  As a contest operator, what feature(s) would you like to see
     in the next generation transceiver?

11)  Are you in favor of limiting transmitter output power to 100
     watts for domestic contests?

     YES       NO

12)  If you had the power to change one and only one aspect of
     contesting, what would you recommend?


13)  In a few words, how does your spouse really feel about your
     interest in contest operating (Ladies--feel free to answer
     this question personally!)?


Additional comments:
(use extra sheets if necessary)

Return your survey responses to:
John Dorr, K1AR
1994 Contest Survey
c/o CQ Communications, 76 N. Broadway, Hicksville, NY 11801

Deadline: November 30, 1994
------- End of Forwarded Message

>From Trey Garlough <GARLOUGH at TGV.COM>  Tue Jul 12 21:57:59 1994
From: Trey Garlough <GARLOUGH at TGV.COM> (Trey Garlough)
Date: Tue, 12 Jul 1994 13:57:59 -0700 (PDT)
Subject: CT Reflector... (fwd)
Message-ID: <774046679.156000.GARLOUGH at TGV.COM>

  CQ-CONTEST at TGV.COM Frequently Asked Questions (FAQ) List
		   Revised:  June 20, 1994


CQ-CONTEST at TGV.COM is an electronic mail reflector dedicated to hams
interested in all types of amateur radio contesting.  This is a good
place for score reports, expedition rumors, and other contest-related
discussion or announcements.  This forum is more like the NCJ than
QST; INFO-HAMS at UCSD.EDU and rec.radio.amateur.misc are good places to
look for a more rounded discussion of the hobby.

Although there is overlap between contesters and DXers, CQ-CONTEST is
not a DX-oriented group.  DX at UNBC.EDU is an electronic mail mailing
list dedicated to the discussion of DXing.  For details on how to
subscribe to this and other mailing lists, consult the List of Lists
at the end of this message.

Each message you send to CQ-CONTEST at TGV.COM will be sent out to all
the other subscribers, kinda like a 2-meter repeater that has a
coverage radius of 12,000 miles or so.	Think of sending mail to the
list as the equivalent of an ANNOUNCE/FULL message on PacketCluster.
Use regular email to send a message to a specific individual.

Electronic mail is also different from packet radio, in that many
subscribers receive their email through commercial services such as
CompuServe and MCImail.  In essence, many people are paying for each
byte of every message sent to CQ-CONTEST.  In order to minimize
spurious messages, follow the operating hints detailed below.

How do I join CQ-CONTEST?

Subscription management is handled automatically by a program that
answers mail send to CQ-CONTEST-REQUEST at TGV.COM.  Send a message to
CQ-CONTEST-REQUEST at TGV.COM that says SUBSCRIBE if you wish to join the
group, or UNSUBSCRIBE if you want to drop out.	The Subject: line is
ignored.  Messages sent to CQ-CONTEST at TGV.COM are broadcast to *all*
readers, so don't send subscription requests there.

What are the suggested "operating practices" for CQ-CONTEST?

Put your name and call sign on every message you send.	We don't all
know everyone by just a call or a nickname.

Use a subject line that indicates the true subject of your message.

Wait a while before answering someone's question.  Six other people
have probably answered it already.  Most answers should go directly 
to the person who posed the question, rather than to the list.

Unlike PacketCluster, many people pay $$$ when they receive messages.
Some people pay per message, some per byte.  Therefore, please take
this into consideration when writing a response.  Would you pay $0.50
to read the message that you just wrote?

Eschew flamage.  If someone sends a flame to the list and you can't
bite your tongue, send your flaming reply directly back to the flaming
individual, not back to the list.  No one wants to pay $1.00 to read
these messages (the original flame + your reply).  Treat flamers the
way you would 2-meter repeater jammers - ignore them.

Make sure there is something of value in each message you send to the
list.  Avoid messages that are a complete reprint of someone else's
message, with nothing but "I agree" or "Me too" added to the bottom --
not much value there.

Some people pay by the byte, so when following up to someone else's
message, be sure to include only the essential pieces or thread of
the note.  Don't include those 20 extra header lines that your mail
gateway tacked onto the original message.

How can I find out the email address of a particular contester?

John Pescatore, WB2EKK (pescatore_jt at ncsd.gte.com), and George Fremin,
WB5VZL (geoiii at bga.com), maintain fairly current lists of 
contester email addresses.  Send a note to them asking for their
lists.  You can also get a list of registered CQ-Contest subscribers 
by sending a message to CQ-Contest-Request at TGV.COM that says REVIEW.

How can I find out more about the Internet?

Pick up a copy of the book _The Internet Companion_ by Tracy LaQuey,
Addison-Wesley, ISBN 0-201-62224-6.  If your local technical book
store doesn't carry it, you can order from Computer Literacy,
2590 North First Street, San Jose, CA 95131.  Their phone number is

73,  The Wouff Hong
List of Lists

CQ-Contest at TGV.COM
	Contest forum

	DX forum

QRP at Think.COM
	QRP forum

VHF.icon_fonts at xeroxaffiliates.xerox.com
	VHF forum
		VHF-Request.icon_fonts at xeroxaffiliates.xerox.com

Boatanchors at GNU.AI.MIT.EDU
	Old ham gear forum

VHF at W6YX.Stanford.EDU	
	VHF forum

N6TRLOG at CMicro.COM	
	N6TR logging program forum

ct-user-request at mlo.dec.com
	K1EA's CT logging program forum

ham-tech at netcom.COM
	forum for people with technical ham related questions (antennas, 
	radios, digital communications, etc) to share information with 
	each other

w1aw-list at World.STD.COM
	distribution list for the dissemination of official news and 
	information from the American Radio Relay League (the "League")

ky1n-list at World.STD.COM
	distribution list for the dissemination of volunteer examination 
	information in New England

ham-ant at UCSD.EDU
        Bidirectional mailing list with Usenet group rec.radio.amateur.antenna

ham-bsd at UCSD.EDU
        A discussion group for people interested in ham radio applications of
        the Jolitz 386BSD software.

ham-digital at UCSD.EDU
        Bidirectional gateway with Usenet newsgroup(s) rec.radio.amateur.digital.*

ham-equip at UCSD.EDU
        Bidirectional gateway with Usenet newsgroup rec.radio.amateur.equipment

ham-homebrew at UCSD.EDU
        Bidirectional gateway with Usenet newsgroup rec.radio.amateur.homebrew

ham-policy at UCSD.EDU
	Bidirectional gateway with Usenet newsgroup rec.radio.amateur.policy

ham-radio at UCSD.EDU
        The HAM-RADIO mailing list is an experimental digest using subject
        grouping and MIME encapsulation to provide a daily dose of ham radio
        related traffic from the Usenet

ham-space at UCSD.EDU
        Bidirectional gateway with Usenet newsgroup rec.radio.amateur.space

info-hams at UCSD.EDU
        Bidirectional gateway with Usenet newsgroup rec.radio.amateur.misc

>From Jim Stevens, KI4HN" <ki4hn at jabba.Cybernetics.NET  Wed Jul 13 00:12:32 1994
From: Jim Stevens, KI4HN" <ki4hn at jabba.Cybernetics.NET (Jim Stevens, KI4HN)
Date: Tue, 12 Jul 1994 19:12:32 -0400 (EDT)
Subject: W5WMU
Message-ID: <Pine.3.89.9407121930.E19259-0100000 at jabba>

On Tue, 12 Jul 1994, Dave Pascoe wrote:

> Hmmmm.....2 reports now about how loud W5WMU was.  

Make that 3.  I was CQing on 80M.  Most callers were S7-S9 barely above
the noise level.  W5WMU was easily 30db over S9.  He was so load that when
I first heard his signal I thought he had to be local.  BTW, I'm in NC, and
he's in LA.  Wow!!

73, Jim, KI4HN
ki4hn at jabba.cybernetics.net

More information about the CQ-Contest mailing list