I have been playing with a new Triquint ULNA device (TQP3M9036). It
Shows a lot of promise. It is like a MAR or MSA device in that it is
50ohm in and out. and has a claimed NF about .4db nf ( their numbers).
I have built several pramps to test them and have gotten even better
than they claim and they cover 50-1296 with ease and NF is .4ish or
below. The S11 and S22 are both great and the OIP3 is +35db also
...very nice device. It has great promise as a good terrestrial LNA.
Preamps are foolproof to build and would cost under $50 if all the best
quality parts are used.
Just for information only ...
Pete WA2ODO
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Sri I made, at least a mistake, I send it again.
Hi all,
Very interesting answers. I come from Sats world, where the Doppler
is a serious issue and it is so quick that it is impossible to work
JT65.
I will speak thinking in one carrier. Sats need to receive in only
one fix frequency (it is an active RX with a wideband), if the Sat
receives a carrier in this frequency then it will be repeated. The
signal TX from the Sat will be in one fix frequency. So people who
work Sats must correct its TX frequency (according with actual
Doppler) to reach the sat in its fix frequency, in the same way
because of the Sats will repeat this signal in a fix frequency, people
must correct its RX frequency (according with actual Doppler).
This way of dealing with Doppler is very interesting because NOBODY
KNOWS the Doppler of the other stations and nobody needs to know it,
we only need to know our own Doppler.
If we would use this agreement to EME communications we will always
speak about the frequency we hit the Moon, in other words the
frequency which the Moon hear us and repeat our signal.
The actual EME software shows us the Doppler as the sum of the Doppler
effects to reach the Moon and to receive the bounce signal, so Moon
will receive us at ½ Doppler announced, the other ½ effect will appear
after de bounce.
I will try to set a couple of examples.
1.- We will agree to hit the Moon in 1296.070. This is the frequency I
will announce in the log. In our software the dates will be:
*Self Doppler
+3KHz
*DX Doppler
-2KHz
The sign that the software shows will aplly to RX frequency and the
opposite to the TX frequency, and always ½ magnitude on each one.
Both of us must deal with Doppler, each one must do their task to hit
the moon in the agreed frequency and to receive the bounce according
our Doppler. Then we must set on our transceivers:
*Me
TX: 1296.070 -1.5KHz = 1296.0685MHz
RX: 1296.070 +1.5KHz= 1296.0715MHz
*DX
TX: 1296.070 +1.0KHz = 1299.071MHz
RX: 1296.070 -1.0KHz= 1296.069MHz
Each station who sees the post will act only according its own
Doppler. Don´t mind where is the DX station.
2.- In this case I see a signal in my receiver in 1296.070. What
kind of pair of frequencies I must set (I know nothing about the DX
station I have still decode nothing), I only know me own Doppler, and
it is +2KHz. I must hit the moon in the same frequency that my
partner:
TX: 1296.070 -1.0KHz = 1296.069MHz
RX: 1296.070 = 1296.070MHz
WE WILL NOT NEED TO KNOW NO MORE THAN OUR DATES.
I haven´t spoken about what frequencies will be the echoes (both
echoes), to make the understanding easy.
As a drawback we should change our habits, we should always use the
RIT as follow:
TX: The frequency we choose plus the opposite sign of Doppler and ½
Doppler magnitude.
RIT: the sign of our Doppler and ½ Doppler magnitude.
Although at first glance it seems not to be interesting in 144MHz but
we will always hit the target in whatever band, even in 144MHz.
Somebody can tell that they need a computer, to do JT65 of course, if
you do CW surely have a smart phone with the proper software to know
your own Doppler or you can print it before.
If I made some mistakes let me know.
It is my 2 cents.
Juan Antonio
EA4CYQ
Hi Lunatic!!
i heve :
3 meter Dish Reflector Kit. (also avaiable on request other Diameter)
307 CM DIAMETER F/D RATIO 0.4
The Kit includes:
16 Ribs pre-assembled
8 Angular reinforcement structure
1 Central Drum
1 Attack must (dia. 45 mm approx. – innocents-)
5 Tube Ø 16 mm shaped for the circumference.
All the necessary mounting hardware (all INOX)
Photo-mounting instructions
All parts are numbered and the entire structure is easily assembled.
For mounting serve three keys: 10, 13 and 8.
The whole structure is made of anodized aluminium avio anti-corodal.
All hardware is STAINLESS steel.
The weight should be around 20/30 Kg (a person can hold it alone)
Once assembled it remains only to apply a mesh (not included in Kit) which
vest more befitting to the frequency on which will be working the parable,
keeping in mind that we can say that the length of the side of the mesh
shall be at least one-tenth of the wavelength of the lowest frequency
(example. 1296 MHz wavelength at least 23 cm knit 2,3 cm). A good
compromise may be from 1.2 cm that is what I have installed on my parable,
who works on 432 MHz 1296 and 2320 with excellent results.
The price is 850.00 euro(excluding shippingcosts),
taking into account the type of materials used
and the workmanship, and also taking into account that a German firm
producing a specimen like this and wants to € 1400.00!!!!
Just for news I built many kits from this dish and I personally tried
with great satisfaction via Tropo 432-1296-2320 MHz and 1296 Mhz EME,
representing that every subsequent construction are applied to minor
improvements.
On request I can provide support for elevation, support for feed (depending
on what you decide to use) and feed.
On request sending other photos via email.
Anyway almost identical to this: http://digilander.libero.it/iz0cls/
Or watch this video: https://www.youtube.com/watch?v=Fxqs7mtuT-A
If you or someone of your friend is interested
Contact to: fabrizio.iz0cls(a)gmail.com or iz0cls(a)libero.it
73 to All! de Fabrzio IZ0CLS
It sort of make you wonder who is running ARRL? All the HF contests
"require" Cabrillo logs; VHF/UHF contests also require Cabrillo for
electronic submittal and even provide an on-line robot to assist the
entry. EME no computers; just paper and pen(cil) and a stamp? This
from the folks that brought you LoTW.
So I ask you: "How many ARRL's are there"?
Well I use paper and pencil log real-time when operating so have to
transcribe to an "official" log, anyway. I use the ARRL paper
worksheet and log form for my official log whether its mailed (EME)
or e-mailed (other contests). I suppose some day I could install
some kind of electronic logging. But one still has to type in the
entry. An auto-log utility for WSJT would be an nicety. I don't
find the MAP or WSJT "Rx" text file format that usable as one has to
heavily edit the file entries to fit the ARRL form.
But it sure makes a nice document for resolving any issues on what
was received or sent. Caveat: many computer clean-up programs will
erase these files as part of computer maintenance. You have to
copy-paste the file to a folder which will save it outside of the sw folder.
What's the log submittal deadline date? (rhetorical question)
73, Ed - KL7uW
At 11:14 AM 11/30/2015, David Tanks wrote:
> From the EME contest rules page on arrl.org:
>
>7. Reporting: Entries must include complete log data as well as an
>official ARRL EME Contest Summary Sheet. Official forms are
>available at the top of this page under "Overview: Paper Entry
>Forms" or with a SASE request to the Contest Branch. No other forms
>of the summary sheet will be accepted. Each line of QSO data in the
>log should contain band, mode, date and time in UTC, callsign of
>station worked, exchange sent, exchange received, each new
>multiplier, and points earned. Photocopies of the log form and
>official Summary Sheet are acceptable. Logs should be emailed to
><mailto:EMEcontest@arrl.org>EMEcontest(a)arrl.org and hand-written
>paper logs or diskettes mailed to: EME Contest, ARRL, 225 Main St,
>Newington, CT 06111 USA
>
>In other words, you must use their paper log form and summary sheet;
>no Cabrillo log is required, and none will be accepted.
>
>73, David AD4TJ
>
>
>From: Curt Nixon <radio.ku8l(a)gmail.com>
>To: moon-net(a)mailman.pe1itr.com
>Sent: Monday, November 30, 2015 12:13 PM
>Subject: [Moon-Net] Contest log submission?
>
>GM List:
>
>I managed to get past a hung-up masthead relay set and a couple of
>problems in the amp which caused a loss of screen voltage. Got on for
>all of Sunday and made a few contacts.
>
>Is there a simple way to get the WSJT log files into Cabrillo for
>submission? I can easily get it into my main logger32 station log and
>then convert out to Cabrillo using a converter--but is there an easier way?
>
>Also, in the form, mit asks for full exchange Rx and Tx. What do they
>expect there? It is a pretty small box! :)
>
>Perhaps with only a handful contacts I should just do a handwritten
>submission and summary?
>
>Thanks
>
>Curt
>KU8L
>_______________________________________________
>Moon-Net posting and subscription instructions are at
><http://www.nlsa.com/nets/moon-net-help.html>http://www.nlsa.com/nets/moon-net-help.html
>
>
>
>_______________________________________________
>Moon-Net posting and subscription instructions are at
>http://www.nlsa.com/nets/moon-net-help.html
73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
dubususa(a)gmail.com
Hi,
23CM cw ONLY and I have never called this much CQ. Got 22 to add
on and 74 became my total this year.
Very windy Sunday made me loose several weak callers . Many
thanks for keeping on calling on my QRZ´s.
Worked only 8 NA. Still some nice CW to be heard on the moon
73 mni tnx / Carl sm3akw/sd3f
Gentlemen
*I will be on both 23 and 70cm for only Saturday of the ARRL Contest.*
(Sat 28th Nov 15 .. Moon Rise 1135z .. set 2150z )
No skeds, no chat rooms, just random CW. If you can't hear me you have a
problem Huston.
*Please check my website for the latest updates* as I have made cosmetic
colour changes to the
software commensurate with Windows 7 and 10 ..*beware of W10* as I found
many common programs do not
run on it at present.You wont knowthat until afterwards! Winding back
from W10 to W7 is not as you would hope.
It does appear smooth enough but I found much is 'corrupted' during the
process. My current software compilers will not
run on W10 and the Software Co. bluntly stated that they do not support
W10 for my version, however, I could upgrade to their latest
product for a 'once of bargain price' of US$7950! .. Accordingly I
wound backand with considerable difficulty. That took another 4 frustrating
days to return to where I began and used half my data download budget in
the process (4.5GB), and all the time thinking 'won't I ever learn'?
If you are going to 'upgrade', my suggestion is to Ghost your existing
drive to another and then use that one to update
so you have a fully functional fall-back. A new MS pretty logo and some
extra refinements, although quite nice, may not be worth itgiven it
seems that
many drivers are not currently available for some programs and may, in
all probabilitynever become available?
Its that *serious* that a close friends wife, (his call sign shall
remain anomalous), took her grand sons advice over his own, and 'updated' to
W10 and promptly found she had lost all her computer games! Absolute
disaster! It was pointed out that it was up to the grandson to provide
the solution.
I would have loved to have been a fly on the wall!
73 Doug VK3UM
www.vk3um.com
Hello All - I recently purchased a never used RAK AlfaSpid rotator which
being about 7 years old is out of warranty. It's a great rotator [or will
be when its fixed] but I am having trouble with random loss of directional
calibration. After resetting it in the shack which is a great feature its
ok for about 3 heading changes then either goes high or low by about 5
degrees. My first thought was slippage of the mast but I have eliminated
that possibility. It's definitely in the electrical side. It can be
operated in the dc range of 13.8 - 24 volts & have tried a different voltage
with no change. I contacted Alfa Radio in Canada who were helpful & advised
that they were aware of this fault. I was posted a trouble shooting list but
it only covers obvious things like shorted or broken wiring. The resistance
checks all agree. Before I try & take it further with them has anybody here
had similar problems with this rotator?
Tnx for your time.
73, Trevor, VK4AFL.
ARRL accepts (and prefers) Cabrillo logs for the EME contest. From their web site: Contest results should need to be submitted in Cabrillo file format.send to:EMEContest@arrl.org73, Rick, K1DS
