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.
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
For 10Ghz only one preamp is available and we will close further production after delivering more then 100 pcs.
We expect a crowed band in the coming time,hi.
We are currently preparingthe first batch of a super LNA for 24Ghz with NF: 1.1dB
Furthemore we would like feedback for the design and production of an 24Ghz SSPA.
Design goal is: 10Watt rf out, Vdc: 15Vd and WG connections.We will design against a reasonable price but need your feedback.
Thanks in advance,
this is a reminder for the ARI EME Trophy 2019 Spring Section
Period:from 00.00 UTC of 11th May to 24.00 UTC of 12th May 2019
Bands: 144 - 432 MHz. 1.2 - 2.3 - 5.7 - 10 GHz.
You can find rules at this link:
It's appreciated the use of the log that can be downloaded from the site
All Stations that have participated in both sections will participate to
the final Trophy 2019 with the sum of the score obtained, the First
station in each category wil receive a Prize an Award to all participants.
Vy 73' de Enrico i5wbe
Hello to all interested in the 222 band.....I still need several states
for 222 WAS. I have grouped them into two "groups"....east and west
The east group consists of KY, WI, MD, DE, ME, RI, VT, and CT. Of this
group, KY and WI could easily be worked via meteor scatter, IF I can
find someone to run with in those states. So if you know someone that
might help, please try to get us together. MD and DE are also workable
from here on meteors, but those states are in the "long haul" category.
In other words, they are both at almost maximum distances. The rest are
probably reachable via EME.
The western group consists of NV, MT, OR, WA, and WY. Of course, there
is always HI, but everyone is just waiting for Bill-ND0B to move there
with his Lunar-Links and FB antennas. None of he above states are
reachable via meteor scatter, so EME will have to be used.
On meteor scatter, I am running 2 x 23el at 135ft and about 1300W. On
222 EME, I am running 8 x 222XP40s with full steering and a tower
mounted cavity preamp. In the last week, I have worked two new
states....UT thanks Mike-K7ULS and MN thanks Mike-W0VTT and AC0RA-Wyatt.
If anyone can help me with my 222 WAS, please contact me. You don't
have to have elevation to work me, just a good tropo station with some
power. We can run on your rising moon(stations to the west of me) or
your setting moon(stations to the east of me).
David-N9HF is also trying hard to finish out his 222 WAS, so if you are
active on 222 you might contact him to see if he needs your state.
73 Marshall K5QE
Phone is 409-787-3830 if you want to talk about all this....
I have about 100 (what I believe to be Suhner) female-N to female-SMA
panel mount adapters. These are SS with gold contacts and in excellent
condition pulled from existing racks. Most are pristine some may show
very small tiny surface nicks/scrapes where one adapter has been
rubbing against another. Electrically perfect.
Selling in lots of 5 for $20. Can ship 40-50 for $8 within USA.
Gallery at http://w8bya.com
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
I am playing with a better TX/RX delay on my IC-9700.
Maximum delay on the rig is 30 mSec, which is a little short.
Most coax and other relays need a longer timing.
I am afraid to kill the preamp with no other protection included.
With this in mind I did some experiments with an (old) Mitsubishi MD001H
hybrid antenna switch.
Using such a device is easy to delay TX RF entering to the relay box and
It also create a separated RX and TX port.
I also used a circulator at the rig to prevent high SWR on the rig itself
during the time there is no connection to the antenna while the Mitsubishi
switch delays it.
It really works great, timing on a pin switch can be done in many ways. For
this experiment I used a RC combination with an ordinary P-channel FET to
switch the bias on the Mitsubishi PIN switch.
As stated before it works and any delay can be made this way without
damaging the rig.
After rough tests I would like to know the RF performance of my creation.
And I was in shock.
The data sheet said that the minimum isolation between the TX and RX port is
But I measured 23 dB with a calibrated VNA. Another MD001H gave exact the
same performance, and another PCB with better separated connections did not
gave better performance.
Using the 9700 as an exciter it will drive my amps with around 7-8 Watt.
Which means that my preamp will have around 70 mW on the output port, and
kill the preamp sooner or later with such a low isolation of the PIN switch.
I do not go on with the MD001H, but would like to know if there will PIN
switches available that are able to transfer up to 20 Watt and have at least
40 dB isolation between TX and RX ports?
If so, please drop me an e-mail.
73, Peter PA2V