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 ...
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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.
qrv 70cm, 33cm, 23cm, 13cm, 9cm, 6cm and 3cm.
Hello to Lunatics.
Owners of RAS 1deg. and RAS 0.5 deg. rotators and Rot2Prog controllers
can try my free Ras Moon Tracker program.
Program was fully tested with RAS 1deg. rotator by me, because I have
it and use it.
Program can be downloaded here :
Program do not required any installation, open archive and extract
program folder to ur C:\ or any other drive.
I stumbled on this site and discovered interresting things.
2m Dual-RX (Special RX converter for 2m adaptive (EME) receiving)
ME2-XP 2m dual RX (EME) transverter (The first dual RX color display
transverter on the World!)
Does anyone have feedback from one of these 2 devices?
It sounds interesting but I'm looking for someone who has this kind of
device to exchange feedback, especially with the use of MAP65 (setup -
73 - Damien F5RRS
After using WSJT V9 for a few years I recently started using WSJT-X as a
second decoder. Sometimes it is better, sometimes not. It has the advantage
that it decodes when one station is calling another (V9 only does this for
One issue I am having is that the Average window in X sometimes shows
stations that I decoded way earlier...sometimes an hour or more earlier and
on a different frequency.
If I click Clear Avg or double-click Erase, the window clears. But a while
later, old decodes once again start to show up in the Average window.
V9 does not have this problem.
I have been using V2.0...today I moved to V2.1.2 and maybe that will be
better. Waiting for MR here.
Has anyone else experienced this behavior?
Does anyone know if that was a bug in the earlier version and fixed in
2.1.2 or can some one suggest what setting I may have set incorrectly?
Thanks & 73,
I've been running MAP65/Linrad/FCDPro+ for many
years now and do so simultaneously with WSJT-10
on an AMD Athlon II X2 B24 processor running at
3.00 gHz and with 6 GB of RAM. Win 10 64 bit Pro Edition.
I've generally found no issues running the above
software (mostly for JT65 EME work) but I also use WSJT-x for 6 meter FT8.
In any case, my experience has been that MAP65
performs better with the FCD+ if I use Linrad as
the "intermediary" (network) as opposed to not
using Linrad. I believe the difference to be the
superior noise blanker performance more than
anything but admittedly, this isn't empirical evidence but rather anecdotal
At 12:12 PM 12/29/2020, Earl Shaffer via Moon-net wrote:
>Early on Map65 was working fairly well. I have a
>single core XP computer and perhaps once a month it would lock up
>when decoding Map65 right at 59 seconds. In
>recent days it was doing this daily or more
>often so it forced me to seek a solution. What I
>did was to defrag the hard drive and set memory
>management to put priority on buffers rather
>than programs. This seems to have solved the
>problem completely. The PC still goes to 100%
>CPU load during decodes but that seems harmless
>now. In fact it works so well now that I can run
>Linrad as a front end for Map65 and that seems to work.
>I have the Linrad noise blanker calibrated and
>working with IQ+. In just a little bit of
>testing I don't seem to notice a difference. In
>fact Map65 might be better by itself.Â
>HERE IS THE QUESTION:
>My question for the group is; Have you compared
>Map65 by itself versus Linrad drivingÂ Map65? Which way is better?
>Both of these programs are on the same PC.
>Linrad pulls 65% of the CPU all the time. It
>might be nice to have Linrad only active when
>Map65 is actually receiving. I wonder if I need
>to change some parameters on Linrad to save the
>CPU? Or maybe I already have it set up less than
>optimum and don't know it. Like most people I'm
>still guessing when it comes to Linrad in spite
>of a lot of recent study about it. What might be
>really good is a guide to parameters that
>suggest a different set of parameters based on
>how Linrad is used and some suggestions on some
>tweaks thatÂ might improve specificÂ aspects..
>That way a person could start with parameters
>that could be close. So these would be complete
>parameters that can be copied to your working Linrad directory.
>I think I am moving toward using Afedri dual
>SDR. It has 1.1 Mhz Rf bandwidth on two
>channels. I had an SDRPlay and sold it.Â It was
>good for experimenting with the wideband Linrad
>noise blanker but the Linrad drivers do not
>control the bandpass filters. I had to make
>HDSDR work, then installed Linrad drivers and
>run Linrad each time I plugged in the SDRPlay.
>The Afedri can output to the network. Linrad can
>input from the network and be used as a
>resampler to output the needed 96Khz bandwidth
>to Map65 also connected via the network. Linrad
>as a resampler can provide the needed wide band
>noise blanking. What is unclear is the
>performance as a resampler. It looks like
>initially it was limited to 40db dynamic range
>but perhaps that was later improved. Once I have
>Linrad outputting Â a 96Khz resampled and noise
>blanked output I am then free to experiment with
>additional instances of Linrad and even WSJT of
>some flavor. That also puts me closer to being
>equiptÂ for operation on CW. Â Now I am looking
>for a more powerful desktop computer. Perhaps a
>refurbished i5 computer is suitable.
>My conclusion on the wideband noise blanker is
>that at zero degrees elevation it is clear that
>the wider the RF bandwidth, the more db of noise
>blanking is possible.Â Many of the noise pulses
>that I see at wide bandwidths are in the 200 to
>Â 300 Khz range. It would be great if it was
>only power line noise that I am dealing with.
>96Khz bandwidth is very good at handling Â power
>line noise.Â At 96Khz I can see perhaps a few db
>of noise blanking depending on the source of
>noise and wider bandwidths as wide as 5 Mhz can
>produce up to 10db of noise blanking.Â This can
>reduce a 25db source to 15db which is still too
>much noise for EME.Â At higher elevations the
>noise reduction is far more modest so I can only
>expect a marginal improvement overall from noise
>blanking. There could be times that I am
>pleasantly surprised even at only 96Khz
>bandwidth for the noise blanker. What the new
>setup would also do for me is to avoid an
>unfortunate bug in Map65. When noise is fairly
>high, perhaps close to theÂ +28db mark (dummy
>load isÂ +21db) the Map65 noise blanker bar will
>go full red and there will be no signal to
>decode. This happens on transition from TX to
>RX. I think perhaps that during the brief few
>milliseconds that the preamp input is
>unterminated that preamp is in oscillation. If I
>don't notice right away that this happened I can
>miss a transmission. By using Linrad as a front
>end, I can avoid using Map65s noise blanker.
>BTW - I have LOTW working and I just ordered
>some QSL cards. My LOTW should be current as of today.
>73 and Happy New year to all.
>Earl Shaffer,Â WB9UWA
>My EME array photos
>Detailed array photos
>Moon-Net posting and subscription instructions
>are at http://www.nlsa.com/nets/moon-net-help.html
President and CTO - Arcom Controllers
Makers of repeater controllers and accessories.
Authorized Dealers for Kenwood and Telewave.
We offer complete turn-key repeater packages!
AH6LE/R - IRLP Node 3000
"We don't just make 'em. We use 'em!"
VE6TA and KL6M completed the first Alaskan 33cm EME QSO last evening on
CW. K5DOG and KL6M completed the first AK to TX JT65 QSO on 33cm. This
was with only a DownEast 40 watt amplifier at my end.
Photos of the KL6M TX equipment here:
https://kl6m.com/33cm/33txconv.html Reception was with a AR-5000 and
ATF54143 W6PQL LNA
A short video of the VE6TA signal here:
I had two Motorola 300 watt bricks which were both defective so I
decided to try it with only 40 watts. Grant amazingly picked out my
signal and gave me a 449 report and I responded with 559.
K5DOG was a whopping -14 on JT65. A fun and successful evening.
Mike, KL6M BP51dc
Congrats! Gain of that dish makes a difference. What kind of NF
does a ATF54143 have?
I got one of the 900 MHz MOT 150w amps and it will only do 55w at
full drive. 1296/900/432 not set up since 2m array crash.
73, Ed - KL7UW
PS: been testing my pile of surplus preamps with HP8970B and sold a
few that I modified with NE334-S01 PHEMT's. Got as low as 0.18 dBNF
on 144 and 0.50 dB NF on 432. Modified some older DEMI preamps
getting under 0.94 NF with no ckt mods on 1296; just resistor changes
for biasing. Original device was marked "101" and originally tested 1.2 dBNF.
My new 2m WA2ODO (eme spare) which Pete tested at 0.08 dB NF, tested
with my NF meter at 0.10 dB so its pretty close for an un-calibrated
QRT on eme with 50v PS problems.
73, Ed - KL7UW
At 10:35 AM 12/31/2020, mike--- via Moon-net wrote:
>VE6TA and KL6M completed the first Alaskan 33cm EME QSO last evening on
>CW. K5DOG and KL6M completed the first AK to TX JT65 QSO on 33cm. This
>was with only a DownEast 40 watt amplifier at my end.
>Photos of the KL6M TX equipment here:
>https://kl6m.com/33cm/33txconv.html Reception was with a AR-5000 and
>ATF54143 W6PQL LNA
>A short video of the VE6TA signal here:
>I had two Motorola 300 watt bricks which were both defective so I
>decided to try it with only 40 watts. Grant amazingly picked out my
>signal and gave me a 449 report and I responded with 559.
>K5DOG was a whopping -14 on JT65. A fun and successful evening.
>Mike, KL6M BP51dc
>Moon-Net posting and subscription instructions are at
73, Ed - KL7UW
Dubus-NA Business mail:
Thank you to everyone in the EME community for their good wishes
following my accident, they were really appreciated by myself and by
I am now back home, recovering well, but due to the needs of exercise
and leg resting I cannot spend as much time sitting at the keyboard as I
would wish, so please excuse a general message to everyone at this time
rather than individual replies.
2020 has been a lousy year but let's think positive and see the glass
half full and look forward to lots of EME DX in 2021
Happy New Year to everyone.
vy 73 & GL,