HELP! R7 Tuning?
Steve Katzmann
the ones shown in the Cushcraft manual. Have you tuned one of these antennas
recently? If so could you call me or give me your number so that I can talk
to you about how I should approach this problem??
email or call Steve at 714-961-4279
WA6MUO
PeterJS
I don't know if anybody replied to you on this one but I too,
as a 2 month owner of an R7, have had a heck of a time getting decent
SWR readings on 20, 30, and 40 meters. At this point with SWR's anywhere
from 2.5 to infinity, the R7 is practically useless on these
bands. For now, I've vowed to pull the vertical off the roof a second
time and RE-CHECK all the suggested lengths but even then, Im not hopeful.
If this doesn't work, are there other options that readers would
suggest to fix the R7 short of taking it to the recycling center?
For that matter, given the California Bay Area 66X100 foot postage stamp
size lot that I live on, what other viable options are there other than a
vertical for getting a good signal out on 40-10 meters?
Peter, KE6VMJ
Bob Martin N6MZV
Peter-
I had a hell of a time with my R7 on 20 meters until I noticed that the
arrow sticker on the trap was upside down- so, I'd put the trap in the
antenna with the arrow pointing up, and therefore the trap was upside down
and the measurements were off. Making sure the antenna looked like the
picture did the trick. I've got reasonably low SWR on 40 through 10.
73-
--
Bob Martin N6MZV * r...@ftp.netgate.net
IO2...@maine.maine.edu
be poorly adjusted (or simply set to some nominal value/length) at the
factory.
I had similar problems with an R5 which refused to resonate on 17M. All
of the noodling around I tried (length adjustment of the antenna itself,
placement, grounding, etc) short of trap adjustment didn't do a thing.
What I'd do: set the element lengths to nominal values given in the docs.
Double and triple check that nothing is amiss with your assembly work, put
it up in the clear and draw out all the curves. If any particular bands are
BadWrong (tm) then, and only then, peel off the heat-shrink on the tap for
that band and tweak away. AFTER all bands are set as closely as possible,
you may wish to play with lengths a bit more but if SWR is below 2:1, your
time will be better spent cruising the bands for an unannounced Spratly
Island DXpedition.
The Cushcraft folks seem to keep this a secret... they'd rather have goods
returned than reveal it... beeezaar.
BTW, you'll find that the heat-shrink is of the sticky-lining variety. You
would do well to replace it with same.
73!
de AA1AP
Joe Pfeuffer
trap.
73
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From: Joe Pfeuffer <pfeu...@on-ramp.ior.com>
Newsgroups: rec.radio.amateur.antenna
Subject: Re: Best Vertical HF Antenna ??
Date: 25 Aug 1995 01:45:25 GMT
Organization: Internet On-Ramp, Inc.
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Jack:
I have had an AP8 up for over five years in the ice, snow, heat, etc with
no problems and pretty good performance (for a vertical).
73
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From: cyro...@aol.com (Cyronwode)
Newsgroups: alt.christnet.sex,alt.polyamory,alt.religion.sexuality,alt.sex.swingers,alt.sex.wizards,alt.sex,alt.sex.safe
Subject: Re: Coercing women into forgoing safe sex procedures
Date: 23 Aug 1995 12:46:41 -0400
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hans...@fireball.tng.oche.de (Lutz Heinrichs) writes:
>Andrew Laurence <laur...@netcom.com> wrote:
>>teelok <t3...@soho.ios.com> writes:
>>>Why do so many people say HIV virus. The V stands for virus.
>>For the same reason they say UPC code, ATM machine, and PIN number.
Because
>>they're imprecise.
>dont forget the very popular ASCII code...
>- Lutz -
or the La Brea Tar Pits...or The KLa Fonda Hotel.
catherine
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From: wc...@primenet.com (William Cernansky)
Newsgroups: alt.censorship,alt.sex,alt.sex.services,alt.sex.brothels,soc.men,soc.women,soc.culture.israel,alt.current-events.net-abuse
Subject: Re: !SICK BIBLICAL VALUES: Here's some more!
Followup-To: alt.censorship,alt.sex,alt.sex.services,alt.sex.brothels,soc.men,soc.women,soc.culture.israel,alt.current-events.net-abuse
Date: 23 Aug 1995 16:56:17 GMT
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[ONCE AGAIN, followups removed from alt.homosexual and
alt.politics.homosexuality]
Steven Etienne Buehler (eti...@netcom.com) wrote:
: wc...@primenet.com (William Cernansky) wrote:
: >I get really tired of hearing the following diatribes:
: > 1) "If you want proof of God, just look around you."
: You'll note that I have not used such "diatribe" in this discussion.
I was referring to a general collection of diatribes (hoping to avoid
getting hit with one of them again by a followup - pre-answering the
followups, if you will), not you specifically.
: > [I have read the Bible and I understand that it is chock-full
: > of scientific errors. It contradicts itself in many places,
: > and describes the eradication of over 20 million people by the
: > Jews alone. It describes and demands sexism. I understand PLENTY.]
: The Bible makes no claim to be a science textbook, nor should it be
: read as such. I frequently hear the "contradiction" concerning a
: round vessel for the Temple whose measurements do not exactly conform
: to the mathematical formula for diameter relative to circumference.
: Big deal.
Well, since the Bible is the supposedly the word of the Supreme and
Perfect Being (who, um, admitted that the great flood was a mistake.. oh
dang, so admittedly imperfect), any inaccuracy or downright falsehood
makes the entire text SUSPECT.
: > [Look, you can't prove that the Bible is the Holy Word using its own
: > claims that it's the word of God. That's like me saying "I am God.
: > Of course I must be, because I am God and I say so."]
: But you believe, I assume, that your best friend is your best friend
: because he says so. Do I see a double standard?
Who says I believe that? I judge my friends on my own terms. My best
friends are my best friends because *I* say so. Would that Christians let
me choose my path so easily!
: >No other religious group outside of Judeo-Christendom has ever offended
: >me. I guess that's because the Hindus, Buddhists, Taoists don't demand
: >that my government pick my religion for me. Thank Odin for that.
: On the contrary, I have great umbrage that the government chooses to
: subsidize and give freedom for every religion to be expressed in the
: public arena *except* Christianity. A simple review of the ACLU
: guidelines could present that very easily.
So ACLU guidelines specifically deny Christianity from publicly funded
institutions but allow, say, Muslims to force their public schools to
hold Muslim services? This appears to be what you are saying; please
elucidate. As far as I've seen, no religion may be foisted upon students
in a public school. You're free to practice any religion you want - at
home, in church, or even school, if you keep it to yourself.
The ACLU doesn't prevent Christian kids from praying at lunchtime, does it?
--
Bill Cernansky | "I do not find in orthodox Christianity
wc...@primenet.com | one redeeming feature." -- Thomas Jefferson
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From: msser...@aol.com (MsSeraphim)
Newsgroups: alt.sex.services,alt.sex.brothels,alt.sex.prostitution,alt.sex.wizards,alt.feminism,alt.sex.advocacy
Subject: Re: Sex Workers Demand End to "Wars on Whores"
Date: 23 Aug 1995 13:01:45 -0400
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Xref: bunker alt.sex.services:3663 alt.sex.wizards:20608 alt.feminism:65204 alt.sex.advocacy:174
<< SEX WORKERS RIGHTS ORGANIZATION DEMANDS END
TO "WARS ON WHORES" THROUGH DECRIMINALIZATION>>
I'm glad to see and hear that women are taking a stand against a
misguided and immoral national philosophy.
****
MsSeraphim
"These are very confusing times. For the first time in history a
woman is expected to combine: intelligence with a sharp hairdo, a raised
consciousness with high heels, and an open, nonsexist relationship with a
tanned guy who has a great bod." -- Lynda Bary
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Date: 23 Aug 1995 16:17:17 GMT
From: o...@inch.com (Joe Martini)
Message-ID: <cancel.org....@inch.com>
Newsgroups: alt.sex,alt.sex.erotica.marketplace,alt.sex.erotica.market.place,alt.sex.services,alt.sex.escorts.ads,alt.sex.masterbation,alt.sex.wanted,alt.sex.telephone,alt.personals.ads,alt.personals,alt.irc.sleaze
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Newsgroups: alt.sex
From: cdet...@idirect.com (Carmen Deturse)
Subject: Usenet Ads
Message-ID: <Edda1995Aug22...@news.compulink.com>
Organization: Internet Direct, Canada
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There seems to be a raging debate on the subject of ads in usenet.
I am compiling comments. Do you agree or disagree with advertising in
usenet, and why.
--
Carmen F. Deturse -- cdet...@idirect.com
Check out our free XXX ADULT PRODUCT Catalog.
E-Mail for details.
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From: ho...@home.com (Barrie)
Newsgroups: alt.celebrities,alt.binaries.pictures.celebrities,alt.supermodels,alt.models
Subject: Re: REQUEST: CAROLINE MUNRO (LAMBS NAVY RUM & BOND GIRL)
Date: Wed, 23 Aug 95 15:10:57 GMT
Organization: home
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She was really sultry and had a fantastic body. If anyone has any pictures
from here calenders, please post in one of these groups. I'm not sure if she
did any nude modelling, but if she did and anyone has some, please post them.
In article <418o7p$a...@newsbf02.news.aol.com>,
maxg...@aol.com (Max gorky) wrote:
>She was also the evil sorceress in Oliver Stone's film "Siezure" Wow!
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From: joe...@aol.com (Joe 3 joe)
Newsgroups: alt.binaries.pictures.d
Subject: cmsg cancel <415ve5$7...@newsbf02.news.aol.com>
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Please cancel this posting
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From: Stephen Kunc <s...@capitalnet.com>
Newsgroups: soc.culture.portuguese,soc.culture.canada,alt.sex,alt.wired,can.politics,alt.censorship,alt.politics.media,tor.general,can.general,bc.general,ab.general,can.legal,earth.general,ont.singles,ont.general,alt.recovery,talk.bizarre
Subject: Re: POLICE ANUS RAPED BY BLACK MAN
Date: 23 Aug 1995 17:08:51 GMT
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sme...@chat.carleton.ca (Steven Meece) wrote:
>
>> Your antics are a prime example of the kind of strains a misdirected
>> individual (or interest group) can put on a society and it's services. You
>> proudly waste resources, but produce no marketable output. You and those
>> like you make me sick.
>>
>> (Want a better Canada? http://www.reform.ca)
>
>It doesn't surprise me that you would be sickened by the thought of
>democracy in action. Just another Reform Party scumbag, I suppose.
Gee, well I for one am glad to know that this is where my tax dollars go: into
wasted fax paper, deliberately misused government services, financial
compensation to fraudulent brain disorders. I'd be horrified if some of the
money I pay actually found its way into the educational system or economic
projects rather than being petered out providing crack babies like Joe Baptista
with the time and resources to waste even more of the money. In fact, I wish
there were more people out there whose only source of self-calidation is
harrassing the low levels of government so that they can hike my taxes even
higher.
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From: vent...@aol.com (Ventura T)
Newsgroups: alt.binaries.warez.mac,alt.binaries.warez.ibm-pc,alt.2600,alt.security,comp.security.misc,alt.binaries.pictures.erotica
Subject: Re: K00l! Warez FTP SITEZ! 31337, d00dZ!
Date: 23 Aug 1995 12:56:25 -0400
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>Hey, you little toad, get the hell off the net. I am sick and tired of
>your bullshit. No one here wants your lame-ass posts. I'd killfile, if
I
>could.
I usually lurk through the jumble of nonsense, but had to comment on your
post.
I think that you were out of line with this reply. I figure you are kid
who has to much time on your hands! Get a life or jump back into reality
and get the big picture. THE EARTH DOESN'T REVOLVE AROUND YOU!!!!
Enigma
Jim Martin
:>I have an R7 vertical and before this I had a R4 vertical. I have
:>always had problems tuning it when I place it on a metal mast. I have
:>mine now on a mast that is about 12 feet high. Before I used to have
:>it chimeny mounted and had no problems. It seems that the metal mast
:>detunes it. I just use it as it is and use an antenna tuner.
I wonder if you pushed the metal mast up too far into the R7? That, in
essence, would short the base of the antenna with the radiating portion and
would put everything at the same potential as the mast. It would also by-pass
the matching network in the process...Can't do it that way. That is the only
way, I know of, that a metal mast would have any affect on "detuning" the R7.
I can almost guarantee you that if I set up your R7 that problem would not
exist. Keyword is almost. :-D
The only way to detune these antennas would be to mount them too close to
something metalic or to try to guy them with metalic guys...of course you can
also adjust the lengths of the various sections of the antenna and be off also.
I run an R5 currently. It is resonant smack dab where it's supposed to be on
each band...used my MFJ-259 analyzer after the antenna was put together in its
entirety. I went by the instructions to put the R5 together. Used a
screwdriver, a crescent wrench, my wife's car (something to support the antenna
during setup), and a measuring tape. I was pleasantly surprised to see that it
required no further tweaking...I mean it was done, first time!
One thing I didn't like was the way the 10 meter coil was wound for
27.8-something. A call to Ken Albertson at Cushcraft gave me instruction on
how to tune the antenna up into 10 meters...not that it really mattered. I
didn't ask why that type of instruction wasn't placed in the
literature...hmmmm. I'm sure there are those with the R7 who would like their
favorite 40 meter frequency tuned as the center freq on their antenna.
Tomorrow I will call Ken and let him know about this thread and see what kind
of support he may have to offer. This is interesting though.
Cheers!
--------------------------------------------------------------
|Jim Martin, WK1V | I speak for no one...Not |
|Lowell, Massachusetts | even for myself! |
|USAF (Ret)ained | #include "std_disclaimer.h" |
|ex: KA5MWD/N1CLS/KB1LW/HL9ZF | Intentionally Left Blank |
--------------------------------------------------------------
Jim Martin
:>Tomorrow I will call Ken and let him know about this thread and see what kind
:>of support he may have to offer. This is interesting though.
And so I did. The R7 "Guru" at Cushcraft is Ray Lajoie, N1SIX. Ray is also
the Tech Services Manager. You can ask for him by calling (603) 627-7877.
Jim Martin
on 80 meters. For those who do not know....DO NOT USE the R7 on bands it is
not designed for.
REASONS:
80 meter operations will damage the matching network
6 meter operations will blow the 17 meter trap.
I do not represent any manufacturer or dealer here on the net.
