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.
Just a comment from me.
I’ve owned an Alfa Spid RAS for several years and it always lost its position, once wrapping the coax twice around the mast before it snapped.
I changed to a 18vdc supply and all the problems went away.
Calibration is a once every few months check.
I now also own a Spid ( not the Alfa Spid ) Big Ras/HR, driving a 3 mtr mesh dish and the motor runs on the 26vdc supply and the controller on a 16vdc supply, both homebrew.
No problems at all so far .
I’ve been told many times that the Alfa Spid is a copy and isn’t as reliable as the genuine Spid, whether thats true or not I don’t know, but both mine are doing what I want them to do.
I did consider the Green Heron controller as we use several of them at our radio club, but so far the originals are behaving well.
I suppose there are good and bad ones out there :(
VK6KB / VK6EME
I have the following items for sale.
* HA1YA ME2-RX 144MHz to 14MHz dual receive converter GBP 130/EUR 150
* 2 x WA2ODO 144 MHz preamp 27dB Gain, < 0.1dB NF with female N-Type
connectors GBP 45/EUR 50 each + shipping
Please contact me off list if interested.
73, Niels - G8RWG
I use LMR600, 14’ of it coming off the T junction of my power divider lines on my 6M 4X7 array. It hangs down and then comes back up to meet with the 1 5/8” feedline which is curved around near the top of the tower 180degrees so that the connector points down and doesn’t stress the LMR600.
For 23cm I was thinking I’d use LMR1200 for the line coming off the antenna connecting to the 1 5/8” feedline. It is listed as “flexible”. There is also an LMR900 which you might consider.
I have some questions regarding the use of low loss coaxial cables in combination with antenna rotator.
The cable should be flexible and able to withstand a lot off repeated bendings.
LMR600-UF might be another one, but much expensiver and maybe difficult to get, including connectors.
So, anyone has experience with the use of SCF12-50 as a cable in a rotatable system and what should be a 'safe' loop radius?
Also interested in other comments, tips, ideas and experiences regarding this subject.
73 and CU on 432MHz EME
Sent from Mail for Windows 10
I'm looking to install an LNA for 1296 but it doesn't come with a
transfer relay so I need to find one or a combination of normal relays
that will handle at least 400w, preferably more.
What relays are people using for this purpose ?
VK2XAX : QF56if : ITU59 : CQ30 : BMARC : WIA