A good start might be a "diplexer" at the antenna to terminate the
energy you do not want presented at the receiver. Put a termination on
the uhf port and stick it in the vhf side of the feedline, assuming you
are running two coax cables down to the shack. If the VHF is desensing
the UHF, do the same thing in the UHF feedline with a termination in the
VHF port. You don't say how much power you were running, but there
comes a time when too much is too much.
Using two runs of 100 feet of 9913 on my TS2000, I only need the
diplexer on the UHF coax. Funny how the third harmonic on VHF gets to
be awfully close to the UHF frequency of interest.
My watt meter can't tell the difference in UHF or 3 times VHF when I try
to read the power. HI.
73,
Jim WA4IVM
On Mon, Jun 30, 2008 at 1:18 PM, Simon Brown (HB9DRV) wrote:
> Same here with TS-2000, 6ft *aluminium* boom and SSB Electronics
> masthead
pre-amps.
I'm thinking about a 6ft to 9ft fibreglass boom anyway, I would be
interested also in user comments.
Simon Brown, HB9DRV
--------------------------------------------------
From: "Reicher, James" <JReicher(a)hrblock.com
<mailto:[email protected]> <mailto:[email protected]> >
> I got significant de-sensing of my 2 meter downlink from my 70cm
> uplink at Field Day. I know a good part of it was due to the short
> cross-boom (about 4 feet) I was using. I would like to decrease the
> de-sense on this set-up before I permanently install it at my home
> station. Any and all suggestions are welcome.
_______________________________________________
Sent via AMSAT-BB(a)amsat.org. <mailto:[email protected]>
<mailto:[email protected]> Opinions expressed are those of the author.
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[CUTE-1.7+APDII Earth 3rd picture]
The photo was taken at 01:08:30 (UTC) on Jun 25, 2008.
Position of the satellite was;
Lat: 44.9 degN
Lon: 134.3 degE
Alt: 621.3 km
Horizontal angle of view is 58degrees.
Over Russia Vladivostok
Japanese weather satellite, "MTSAT-1R" took a picture of
clouds on 01:00 UTC on Jun 25, 2008.
We, the Tokyo Tech Ground Station, are still investigating what is
in this picture. Carefully watch it and try to find "something"!
http://lss.mes.titech.ac.jp/ssp/cute1.7/blog/01-04.jpghttp://www.ne.jp/asahi/hamradio/je9pel/cut17ap2.htm
JE9PEL, Mineo Wakita
>
>Subject: Fw: THIS SHOULD PISS YOU OFF...................IT DID ME!!!!
>Date: Mon, 30 Jun 2008 01:40:29 +0000
>
>
>----------
>From: JAGTRIG9(a)aol.com
>Sent: Thursday, June 12, 2008 7:44 PM
>To: JAGTRIG9(a)aol.com
>Subject: THIS SHOULD PISS YOU OFF...................IT DID ME!!!!
>
>
>This is an insult and a kick in the butt to all of us...
>
>Get mad and pass it on - I don't know how, but maybe some good
>Will come of this travesty.
>
>
>If the immigrant is over 65 they can apply for SSI and Medicaid and get
>More than a woman on Social Security, who worked from 1944
>till 2004, only getting $791 per month because she was born in 1924 and
>There is a 'catch 22.
Liscensed since 1952, politics and women were NEVER DISCUSSED in/on
HAM RADIO!!
What in the hell has changed????......
Women ok, but had no idea the Republicans are that desperate!!
Good for the dems!!
END OF MY POLITICS...
73, Dave, WB6LLO
dguimon1(a)san.rr.com
Disagree: I learn....
Pulling for P3E...
Hi,
It is beginning to look as if it is time to replace my venerable Yaesu
rotators after 20 years of abuse. I was wondering what experience people
have had with the "new" AzEl rotator? (The
http://www.alfaradio.ca/alfaspid.html web page calling it the "new" rotator
was last updated in 2003, so that is probably any relatively recent
purchase.) Doing the Google and checking eHam picked up a lot of
discussion, but mostly of the standard Az rotators. The reports are mostly
highly positive, with a small minority complaining of flimsy electrical
connectors and gears. The latter seem to apply to older units. The M2
units are certainly impressive, but physically large enough to be a problem,
as well as being pricey.
TNX es 73s,
Alan
WA4SCA
-----------------------------------
There is something fascinating about science.
One gets such wholesale returns of conjecture
from such a trifling investment of fact.
Mark Twain
Hello everyone
I'm trying to stretch the foot print, again. I am trying to QSO with Paul 2M1EUB. We share a ever so short window. I'm not sure of his email connection at his portable QTH for this week, his grid is IO87rj, I am in CN89wk should someone know how to figure the distance I'd like to know. Somewhere there is web link that will figure that. Also does anyone know his favorite downlink spot on AO-7, time is too short to hunt around. Should Paul and I make this QSO it might even best a good dx connect by our dear friend K3SZH. We must keep Joe on his toes!
73 & thanks
Bob W7LRD
Seattle CN87wk
--
"if this were easy, everyone would be doing it"
Hi all,
I listened to the Robinson contact via the IRLP Discovery Reflector on the
Internet on the 25th. Several of the other ARISS mentors also listened in.
Nancy WH6PN did her normal outstanding job. At our weekly telecon meeting
later that same day we did discuss the audio levels and time delays; something
we always discuss after a telebridge contact.
For this contact there was a delay of about 5.5 to 6 minutes between real
time and when it came across the Internet. So if one was listening only at the
real time AOS and gave up after a minute or 2; then you would have missed
the contact. There is always about a 5 minute delay of the audio when it comes
across the Internet. I believe that if you are listening in on an IRLP
repeater that the audio is delayed only a few seconds.
At the moment we have had 350 successful contacts. I believe we have had 3
contacts that were deemed outright failures. We have had I think 2 or 3 that
were considered failures on the scheduled contact day but were rescheduled
and were successful on the 2nd attempt. ARISS says congratulations to all of
the school groups and hams around the world who have made that happen. Often
times, that is the first satellite contact for the hams.
When Kenneth or I post the ARISS announcements, we do try to indicate if
Echolink or IRLP will be included but often times it is a last minute decision.
If it is a telebridge contact, then the odds are pretty high that it will be
on one or both. If it is a direct contact, then it is up to the ham group
doing the contact to decide if they want to feed audio to IRLP, Echolink, or
to their own webpage as it is an extra burden on them. ARISS does not require
a group to do a simulcast but does encourage it. If we know it might
happen, then I usually indicate "watch". If we know it is going to happen, the I
usually indicate "should be" or something along those lines.
As far as NASA TV providing coverage, we have been told to not expect it and
not to ask for it. Remember ARISS is a guest on the ISS and we don't want
to wear out our welcome. So ARISS does not request coverage. If on the oft
chance that a camera does show an ARISS contact in progress, then consider it
a blessing.
Hope this helps. ARISS encourages everyone to find a school, fill out the
application, and get on the waiting list. I think you will find it a great
experience. Think of it as your most tension filled Field Day that you will
ever do. Plan on anywhere from 500 to 700 people hours; all of this for a 10
minute contact that the kids (and parents too) will remember for a long long
time.
73,
Charlie Sufana AJ9N
One of the ARISS mentors
In a message dated 6/29/2008 9:35:03 A.M. Central Daylight Time,
ka3hdo(a)comcast.net writes:
Dexter,
This is a very interesting comment from the JSC Public Affairs Office. As a
NASA employee and the ARISS Chair, I will make sure we get this comment
clarified. This sounds very strange and out of character from our dealings
with the NASA Public Affairs Office. It may be one person's misperceptions,
which needs to be clarified.
You all probably know this, but the ARISS success rate with schools is well
over 90%, so reliability is not an issue. That is why we have mentors
working with each school.
Now, WRT the IRLP and echolink, I cannot answer that right this moment as I
was not on the Operations teleconference last week, so I did not hear what
happened. Kenneth Ransom and Charlie Sufana follow this reflector pretty
closely and I am sure they will speak up before I get the info and get it in
an e-mail. But we will provide details on this for you and those on bb
fairly soon.
I thank you for your sincere interest in the ARISS program. And your
interest in inspiring students to pursue careers in science and engineering.
And to pursue the amateur radio hobby.
73, Frank Bauer, KA3HDO
AMSAT V.P. for Human Spaceflight Programs
ARISS International Chairman
---------------------------------------------
From: Dexter N Muir <dexy(a)ihug.co.nz>
Subject: [amsat-bb] ARISS Opportunity...
To: amsat-bb(a)amsat.org
Message-ID: <200806281503.14020.dexy(a)ihug.co.nz>
Content-Type: text/plain; charset="us-ascii"
Greetings all
First post, so I hope it works.
Here is reply from NASA (and my original)
<Quote>
Dear Mr. Muir:
Thank you for your note. We are sorry about your disappointment.
Speaking just of NASA TV, we do not carry Ham radio events because of
reliability issues.
We wish we could offer you better news. We appreciate your interest in
the space program.
Thanks,
The JSC PAO Web Team
-----Original Message-----
From: Dexter N Muir [mailto:[email protected]]
Sent: Wednesday, June 25, 2008 8:24 PM
To: JSC-HSF-Web-Mail
Subject: Opportunity lost!
Greetings from 'Down Under' (KiwiSat land)
A golden opportunity lost!
ARISS had scheduled a contact with Robinson Elementary School,
Robinson,
Texas via telebridge WH6PN in Hawaii on 25 Jun 2008 at 15:45 UTC. At
this
time ISS _was_ over Hawaii, and ISS was scheduled to be in its Live
Commentary period.
There was NO audio from the telebrige WH6PN on either Echolink or the
IRLP
Discovery Reflector, and NASA TV's 'live coverage' segment made
absolutely NO
mention of the event - in fact, no 'on-board' coverage was shown at all!
ISS
was out of range of TDRSS earlier, but would surely have been back in
touch
by then? A camera at the ARISS position should have been easy to
arrange,
even if there is not one already present in that segment.
What happened? Was there some other pressing event that could not be
re-scheduled? A technical fault (though nothing was mentioned of such)?
Did 'dirtside' cancel at the last minute? All Internet links showed the
event would run as advertised right up to time.
Echolink *AMSAT* Conference gives feedback on who is connected, and I
observed 6 other stations on at that time (incidentally 3:45 AM next
morning
here in New Zealand). That is 6 parents or grandparents (like me) keen
to
demonstrate live one-on-one communications with an Astronaut IN SPACE,
who
are now extremely disappointed. For myself, it was my first attempt at
such
a conference, and I am _really_ glad I tried solo without getting 3
grandkids
out of bed.
Despite this disappointment, I will try again (solo), and given at
least
_some_ measure of success am likely to bring said children and perhaps
others
to witness the event some time in the future. THESE are your REAL
audience -
the Astronauts, Scientists and Engineers of the future!
Sincerely
Dexter N Muir, ZL2DEX (Radio Ham since 1969)
Levin, New Zealand
</Quote>
Is this really a reliability issue, or somebody so high they don't smell
very nice (thinking more govt than anything else) deciding that Amateur =
Ham-fisted, and not realising that the 'Hams' involved are mostly
professionals and, because they LOVE what they do (the original meaning,
from
Latin), make professional-level efforts to DO IT RIGHT.
Besides, the exercise is NOT 'Carrying Ham radio events', but more an
issue
of continuing existing coverage, in similar manner to one of the Astronauts
doing a video-tour of the premises (which they do from time to time). As I
had pointed out, there is probably a camera already there - the 'Ham Shack'
is in or near the 'Kitchen' area, which has been 'vid-casted' before.
Can we do better? Can we pressure someone/somewhere to not let this sort
of opportunity pass again?
BTW - what DID happen? Anyone?
_______________________________________________
Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
**************Gas prices getting you down? Search AOL Autos for
fuel-efficient used cars. (http://autos.aol.com/used?ncid=aolaut00050000000007)
I just copied the beacon on 29.351, after not hearing anything for a long tmie.
It's sending relatively short duration pulses today... 1 second on, 2 seconds off, give or take... later in the ascending pass(as I write this) , times are up to greater-than 4 seconds off /.75 seconds on Does that mean the spacecraft is warm?
Strange, that this is the ONLY mode-A signal around these days-besides AO-7 if she feels like it ;)
Auke de Jong
VE6PWN
DO33go
Edmonton, AB
Alan (wa4sca)
I think many of us have come to accept (not expect) glitches from manufacturers. M Square apologized. I told them we all goof up at some time. I heard from a few folks with a direct email. One told me that he did not measure his elements. He just sorted them by size. The purpose of my email was to call attention that you can not do that and get the maximum results from the product. It can be difficult to call attention to a mistake by someone with a good reputation. I may add the polarity switcher and appreciate your "heads up". The drawing for my beam shows a 1994 date for the last revision. The initial drawing was 1990.
Jim W9VNE
The one from Radio Shack is terrific. I've used 2 of them simultaneously for CAT control and N1MM with no probelms. You set the COM ports in setting up, but never again.
73,
Tony, N2UN
Dexter,
This is a very interesting comment from the JSC Public Affairs Office. As a
NASA employee and the ARISS Chair, I will make sure we get this comment
clarified. This sounds very strange and out of character from our dealings
with the NASA Public Affairs Office. It may be one person's misperceptions,
which needs to be clarified.
You all probably know this, but the ARISS success rate with schools is well
over 90%, so reliability is not an issue. That is why we have mentors
working with each school.
Now, WRT the IRLP and echolink, I cannot answer that right this moment as I
was not on the Operations teleconference last week, so I did not hear what
happened. Kenneth Ransom and Charlie Sufana follow this reflector pretty
closely and I am sure they will speak up before I get the info and get it in
an e-mail. But we will provide details on this for you and those on bb
fairly soon.
I thank you for your sincere interest in the ARISS program. And your
interest in inspiring students to pursue careers in science and engineering.
And to pursue the amateur radio hobby.
73, Frank Bauer, KA3HDO
AMSAT V.P. for Human Spaceflight Programs
ARISS International Chairman
---------------------------------------------
From: Dexter N Muir <dexy(a)ihug.co.nz>
Subject: [amsat-bb] ARISS Opportunity...
To: amsat-bb(a)amsat.org
Message-ID: <200806281503.14020.dexy(a)ihug.co.nz>
Content-Type: text/plain; charset="us-ascii"
Greetings all
First post, so I hope it works.
Here is reply from NASA (and my original)
<Quote>
Dear Mr. Muir:
Thank you for your note. We are sorry about your disappointment.
Speaking just of NASA TV, we do not carry Ham radio events because of
reliability issues.
We wish we could offer you better news. We appreciate your interest in
the space program.
Thanks,
The JSC PAO Web Team
-----Original Message-----
From: Dexter N Muir [mailto:[email protected]]
Sent: Wednesday, June 25, 2008 8:24 PM
To: JSC-HSF-Web-Mail
Subject: Opportunity lost!
Greetings from 'Down Under' (KiwiSat land)
A golden opportunity lost!
ARISS had scheduled a contact with Robinson Elementary School,
Robinson,
Texas via telebridge WH6PN in Hawaii on 25 Jun 2008 at 15:45 UTC. At
this
time ISS _was_ over Hawaii, and ISS was scheduled to be in its Live
Commentary period.
There was NO audio from the telebrige WH6PN on either Echolink or the
IRLP
Discovery Reflector, and NASA TV's 'live coverage' segment made
absolutely NO
mention of the event - in fact, no 'on-board' coverage was shown at all!
ISS
was out of range of TDRSS earlier, but would surely have been back in
touch
by then? A camera at the ARISS position should have been easy to
arrange,
even if there is not one already present in that segment.
What happened? Was there some other pressing event that could not be
re-scheduled? A technical fault (though nothing was mentioned of such)?
Did 'dirtside' cancel at the last minute? All Internet links showed the
event would run as advertised right up to time.
Echolink *AMSAT* Conference gives feedback on who is connected, and I
observed 6 other stations on at that time (incidentally 3:45 AM next
morning
here in New Zealand). That is 6 parents or grandparents (like me) keen
to
demonstrate live one-on-one communications with an Astronaut IN SPACE,
who
are now extremely disappointed. For myself, it was my first attempt at
such
a conference, and I am _really_ glad I tried solo without getting 3
grandkids
out of bed.
Despite this disappointment, I will try again (solo), and given at
least
_some_ measure of success am likely to bring said children and perhaps
others
to witness the event some time in the future. THESE are your REAL
audience -
the Astronauts, Scientists and Engineers of the future!
Sincerely
Dexter N Muir, ZL2DEX (Radio Ham since 1969)
Levin, New Zealand
</Quote>
Is this really a reliability issue, or somebody so high they don't smell
very nice (thinking more govt than anything else) deciding that Amateur =
Ham-fisted, and not realising that the 'Hams' involved are mostly
professionals and, because they LOVE what they do (the original meaning,
from
Latin), make professional-level efforts to DO IT RIGHT.
Besides, the exercise is NOT 'Carrying Ham radio events', but more an
issue
of continuing existing coverage, in similar manner to one of the Astronauts
doing a video-tour of the premises (which they do from time to time). As I
had pointed out, there is probably a camera already there - the 'Ham Shack'
is in or near the 'Kitchen' area, which has been 'vid-casted' before.
Can we do better? Can we pressure someone/somewhere to not let this sort
of opportunity pass again?
BTW - what DID happen? Anyone?