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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Hi all,
I’m ready on 6cm with the same dish I’m using on 3cm.
Despite the strong local 5 GHz WiFi noise, had a nice 579/569 first QSO with this setup today with HB9Q, thank you Dan !
Setup is a 3.7m dish and 60W at CP feeder.
I can be QRV on 6cm or 3cm most of the days, skeds and tests are very welcome, as usual.
Vy 73
Bruce PY2BS
qrv 70cm, 33cm, 23cm, 13cm, 9cm, 6cm and 3cm.
Hello 6M DXERS!
Well, it has been a hectic last couple weeks, but the following steps have been
checked off for the month-long DXpedition:
1. Obtain Pfizer third dose "booster shot"
2. Obtain flu shot
3. Meet with Missoula County Health Travel nurse to review necessary precautions and
obtain shots still needed (typhoid)
4. Obtain ETIS entry authorization and pay for Covid test monitoring while in French
Polynesia
5. Reserve space and pay for air freight to ship excess baggage from Tahiti to
Rimatara and Tahiti to Hiva Oa
6. Take Covid test 72 hours before departure
7. Clean house for house sitters from Oregon and explain operation of the house to them
8. Complete packing list for customs with weights and locations of all pieces of
equipment being brought into the country
9. Load (4) 23kg pieces of baggage with equipment into car
10. Load 5 kg allowable carry-on with clothes and food into car
11. Load wearable fishing vest with 5 kg of manuals, cell phone, camera, charging
cords, logbook, travel documentation, ham license for FO, approval to import all the
itemized ham equipment, into car
12. Airline tickets, passport, vaccination record, sworn statement to comply with
Covid Requirements since Covid test, ETIS documents, credit card, XPF currency loaded
in neck pouch
13. Confirm lodging in Rimatara in the Austral Islands and Hiva Oa in the Marquesas
Islands
14. Advise credit card company of travel dates to and from French Polynesia
Assuming that #7 above results in a NEGATIVE test result and I obtain this result by
Monday (tomorrow) night so I can present the results to get a boarding pass, I will
leave the house at 0400 local time Tuesday morning to head to the airport. The next
update - hopefully - will be from an airport while I am en-route to Tahiti.
I have packed a "GPS puck" to set the computer clock if/when there is no WiFi
available. However, I hope to have some internet access from the station location in
Hiva Oa, and at least occasional internet access from a location near the station
location in Rimatara. I also will attempt to purchase a Vini SIM data card for my
cell phone before I board the plane from Tahiti to Rimatara, to be able to create a
WiFi hotspot of my own at the station.
Fingers crossed all goes as planned and I am able to work all who still need the
Austral and/or the Marquesas Islands, either by EME or ionospheric propagation.
Please be sure to review the following DXpedition pages and the links shown on them:
http://www.bigskyspaces.com/w7gj/Austral%20Islands%202020.htmhttp://www.bigskyspaces.com/w7gj/Marquesas%202020.htm
TNX again for your support and patience while this challenging DXpedition has been in
the works! More info coming...
GL and VY 73, Lance
--
Lance Collister, W7GJ(ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M, TX5K, KH8/W7GJ, V6M, T8GJ, VK9CGJ, VK9XGJ, C21GJ, CP1GJ, S79GJ, TX7MB)
P.O. Box 73
Frenchtown, MT 59834-0073
USA
TEL: (406) 626-5728
QTH: DN27ub
URL: http://www.bigskyspaces.com/w7gj
Skype: lanceW7GJ
2m DXCC #11 - 6m DXCC #815 - FFMA #7
Interested in 6m EME? Ask me about subscribing to the new Magic Band EME
email group, or just fill in the request box at the bottom of my web
page (above)!
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Hi All.
According to the Q65 quick start manual you should not set deep decode for
Q65.
https://physics.princeton.edu/pulsar/k1jt/Q65_Quick_Start.pdf
" 2. Start WSJT-X 2.4.0, select Q65 mode, and configure other parameters as
shown in the screen shot below. On the File → Settings → General tab, be
sure to check Enable VHF and submode features and Decode after EME delay,
and uncheck Single decode. >>>> On the Decode menu select Fast, <<<< Enable
averaging, and Auto Clear Avg after decode."
According to W7GJ you should set deep decode for Q65.
http://www.bigskyspaces.com/w7gj/Q65SETUP.pdf
" 5) On the main screen under DECODE, I choose ENABLE AVERAGING and DEEP,
but if your computer seems too slow, you can change the DECODE option from
DEEP to FAST."
So which is it? Deep decode adds considerably to the time the Decode button
stays on. Deep decode also is not saved when you exit WSJTX and restart it
or if you change configurations and back again.
Is there any real benefit to using deep decode on Q65? I would use it if
there really is a benefit. If so, it would be nice if I didn't have to
remember to reset it every time I started the program. If it is of no value
at all, maybe it would be better if that option were grayed out for Q65.
Map65 and WSJTX have been very stable.
I was using deep decode and I DID see some -32db decodes, but there was a
big fat hairy carrier with noisy sidebands only 200 hz above a Q65 station.
I moved him to another (clear) frequency and he was his normal -20db ish
signal.
--
Earl Shaffer, WB9UWA
My EME array photos
https://www.dropbox.com/sh/bbn2ktonko8e3az/AACHBBOhf6Djk5Pf2c86Br5ja
Detailed array photos
http://www.gm4jjj.co.uk/WB9UWA/
Facebook
http://www.facebook.com/earl.shaffer
Linkedin
http://www.linkedin.com/pub/earl-shaffer/12/881/735
When I built my SSPA, I included an attenuator as
part of its design. I can drive the amp with 100
watts safely but only need 75 or 80 to make full power
Ken
At 02:14 PM 10/31/2021, Lloyd Korb via Moon-net wrote:
>I just saw a message on the TS-2000 group about
>reducing the power on the TS-2000 to drive an amplifier.
>
>I seem to remember seeing recommendations for
>attenuators but don't recall the manufacturer.
>
>SV2HQL wants to reduce his output power to less
>than 5 watts to drive his 2 meter solid state
>amp. I told him about the output spike and
>reducing the power or messing with the ALC voltage is not the way to go!
>
>Lloyd K8DIO
>
>
>_______________________________________________
>Moon-Net posting and subscription instructions
>are at http://www.nlsa.com/nets/moon-net-help.html
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Phone: (503) 678 6182
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I just saw a message on the TS-2000 group about reducing the power on the
TS-2000 to drive an amplifier.
I seem to remember seeing recommendations for attenuators but don't recall
the manufacturer.
SV2HQL wants to reduce his output power to less than 5 watts to drive his 2
meter solid state amp. I told him about the output spike and reducing the
power or messing with the ALC voltage is not the way to go!
Lloyd K8DIO
I bought one of these used – supposedly new unused … and just tried it on 6M. I was careful not to connect power to it until the ANT/RX connections were made… I am using an Anan 8K and PSDR so I can very accurately measure the (relative – although calibrated as well) difference between w/o it and with it and it is showing at 32db gain. The spec is 24db +/-1…. Also although I’ve had limited signals to test it on (FT8/Q65 w/ QSB) it seemed like the S/N went down and not up (or at a minimum if my RX NF is low enough, stay the same) …. Any one have/had experience with this module?
Gary
K9RX
Sent from Mail for Windows
hi
the 10ghz eme beacon will be switched down for two reasons.first,the
backlash of the last year changed az drive is to high,so it must be
changed again,second,the 40w transistor pa will,after repare by charlie,
be reinstalled.i can not say how much time it will take because the
situation with the az gear might be complicated ( high weight,spezial
parts,bad weather) 24ghz beacon is no working normal.
vy73 per dk7lj
Hi
Where is the problem 23cm ... from 2017 until now I have been trying to
find sun noise , but unfortunately I can't find it ,
I buy a 5 meter dish with a good quality feedhorn 3 years almost daily I
try but still no gets sun's noise
Where is the problem now
I have a 2.4 meter solet dish fir 23cm I'm trying again please help get
the sun noise
Regarding
9k2ym yaser
On Sat, 30 Oct 2021, 11:11 , <moon-net-request(a)mailman.pe1itr.com> wrote:
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> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Moon-net digest..."
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>
> Today's Topics:
>
> 1. Re: Any 23cm Sun to Cold measurements over the last few days?
> (Mario Armando Natali)
> 2. Re: Any 23cm Sun to Cold measurements over the last few days?
> (Peter Blair)
> 3. Re: Any 23cm Sun to Cold measurements over the last few days?
> (Vladimir)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 30 Oct 2021 09:04:14 +0200
> From: Mario Armando Natali <mario.natali(a)gmail.com>
> To: Bob Atkins <ka1gt(a)hotmail.com>
> Cc: Peter Blair <g3ltf(a)btinternet.com>, Moon-net
> <moon-net(a)mailman.pe1itr.com>, Kurious George <
> curiousgmonk(a)gmail.com>
> Subject: Re: [Moon-Net] Any 23cm Sun to Cold measurements over the
> last few days?
> Message-ID: <E7DBB04B-431C-4F72-8F7D-F7B1C4E25E4E(a)gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Ho Bob and all,
>
> You may try with Murmur ( http://i0naa.altervista.org/ ) that calculates
> SFU for any frequency with a spline interpolation starting from NOAA data
> and predicts Y-Factor noise.
>
> The algorithms I use are less sophisticated compared to the outstanding
> VK3UM work, but I found that the prediction is quite accurate and in line
> with my measurements
>
> You can also save data and so you can build history and plot data.
>
> Mario I0NAA
>
> Inviato da iPhone
>
> > Il giorno 30 ott 2021, alle ore 01:00, Bob Atkins via Moon-net <
> moon-net(a)mailman.pe1itr.com> ha scritto:
> >
> > ?
> > Hi Peter
> >
> > I've found that EMECalc doesn't always seem to be able to update its SFU
> numbers reliably. Maybe I'm doing it wrong (I should read the manual!). The
> NOAA numbers often seem to be unavailable for many US sources. You have to
> be quite careful that when you try to update you have actually updated and
> when you look at the plots you have to make sure that they are for the date
> you think they are for. I'm not sure what the problem is (though it may
> well be me!).
> >
> > With the right browser you can directly access
> ftp://ftp.swpc.noaa.gov/pub/latest/dayind.txt. It doesn't work on Chrome
> or Opera (which I think no longer support ftp transfers), but it does still
> work with Internet Explorer. I think this is the data that EMECalc tries to
> get for the NOAA update. There's also a brief summary of the 10.7cm SFU of
> the last 30 days at ftp://ftp.swpc.noaa.gov/pub/indices/DSD.txt (IE
> works, Chrome and Opera don't)
> >
> > I typically look at
> https://spaceweather.gc.ca/forecast-prevision/solar-solaire/solarflux/sx-4-…
> for a quick the current 10.7cm solar flux. That's only a one frequency
> measurement of course. The NOAA data should be for multiple frequencies
> which can make an estimate of 23cm flux more accurate.
> >
> > 73
> > Bob, KA1GT
> >
> > From: Peter Blair <g3ltf(a)btinternet.com>
> > Sent: Friday, October 29, 2021 5:58 PM
> > To: Bob Atkins <ka1gt(a)hotmail.com>; Moon-net <
> moon-net(a)mailman.pe1itr.com>; Kurious George <curiousgmonk(a)gmail.com>
> > Subject: Re: [Moon-Net] Any 23cm Sun to Cold measurements over the last
> few days?
> >
> > If you use EMECalc and update the SFU you will be able to see the 1296
> flux level which is the result of extrapolation from a model derived by
> VK3UM from the literature and from many sets of measurements. At this stage
> of the solar cycle where we are only just lifting off the curve for the
> quiet sun model a 0.5dB change in the 9cm flux value ( which is where the
> quoted SF is measured) will be reflected pretty well in the 23cm flux level.
> > For a long time in the past 18-24 months the 9cm value has been around
> 70-75 and the 23cm flux around 50-53, almost exactly what the standard
> quiet sun model predicts.
> > As the sun gets more active the curve of flux vs frequency gets more
> irregular ( much more so at 432) and its less easy to predict the 23cm
> value by a simple ratio of the two 9cm values, but if you use the value for
> 23cm from the EME calc model, after updating sfu, compared to the 23cm
> value obtained from an earlier measurement that will be more accurate.
> > For example with the 9cm flux at around 70 the typical 23cm flux would
> be 50 and for 9cm flux of 106 the 23cm flux is 81 so thats a 1.8dB change
> in 9cm flux and a 2.1dB change in 23cm flux. There will be more variation
> during a flare or when the sun gets very much more active. Incidentally, if
> you do happen to catch a flare when the sun noise may be 10dB above normal,
> use it to measure your sidelobe levels!
> > The last couple of years have been good for collecting quiet sun data
> which can be saved inside EMECalc and used as your reference for when you
> make changes.... its not too late to start doing that when the sun calms
> down again.
> > If you are seeing less than 10dB sun noise then you need to make a
> correction for (S+N / N) in any comparisons.
> > 73 Peter G3LTF
> >
> >
> > From: Bob Atkins via Moon-net
> > Sent: Friday, October 29, 2021 8:19 PM
> > To: Moon-net ; Kurious George
> > Subject: Re: [Moon-Net] Any 23cm Sun to Cold measurements over the last
> few days?
> >
> > Today I'm seeing around 13.7dB (sun at 20 degrees elevation). That's
> about normal these days. Over the last month or so maybe an average of
> around 13.5dB.
> >
> > That's with a dish that should be similar in area to a dish about 3.1m
> in diameter (mine isn't quite round due to a flat spot on the bottom so it
> doesn't hit things at low elevation and it's really 12 side, so it's a
> truncated dudecagon!).
> >
> > I think the current SFU is around 107
> >
> > 73
> > Bob, KA1GT
> > From: Moon-net <moon-net-bounces(a)mailman.pe1itr.com> on behalf of
> Kurious George via Moon-net <moon-net(a)mailman.pe1itr.com>
> > Sent: Friday, October 29, 2021 12:44 PM
> > To: Moon-net <moon-net(a)mailman.pe1itr.com>
> > Subject: [Moon-Net] Any 23cm Sun to Cold measurements over the last few
> days?
> >
> > Anyone have any 23cm sun to cold measurements over the last few hot sun
> days? Today I see almost 9 dB with a 1.9m f/d= 0.35 dish and RA3AQ (2008)
> feed as shown in the attached photo. This is with IC-9700 set to USB-D with
> 3.0k Soft BW. Both NR and NB turned off. I think SFU is about 111.
> >
> > Bill, KB2SA
> > _______________________________________________
> > Moon-Net posting and subscription instructions are at
> http://www.nlsa.com/nets/moon-net-help.html
> >
> > _______________________________________________
> > Moon-Net posting and subscription instructions are at
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> >
>
