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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There was very nice CW activity during ARRL contest this year (on all bands except 2m from US) and it is unfortunate I did not have a lot of free time for it.
I also “worked” JT65 logger eme (I thought: who is going to find out anyway??) and apart from constant chatter I also found JAMMING.... a lot of Jamming, even from its own creator!!?
Check a small part of it from N0UK logger:
11/19 17:04 VE3KH you being jammed by K1JT and W6YX (W7IUV Larry WA DN07dg 22.214.171.124)
11/19 17:05 Why Larry .... they on 142 also? (VE3KH Kevin ON FN03aj 126.96.36.199)
11/19 17:06 They are calling me to get a contest poitn and it ain't gonna happen!! (W7IUV Larry WA DN07dg 188.8.131.52)
11/19 17:08 Thansk Larry 73 ... Yes, I have been jumped by a quite a few stations (VE3KH Kevin ON FN03aj 184.108.40.206)
11/20 17:47 Also hr k1jt calling me -22 but not ans him (KN4SM/5WL/KW Jerry VA FM16qt 220.127.116.11)
11/20 18:02 Contest = reduced courtesy! (K5DOG/2M Stevedog NM DM52xw 18.104.22.168)
11/20 18:04 Yes, K1JT and W3SZ can hear on gold tooth. (K5DOG/2M Stevedog NM DM52xw 22.214.171.124)
One thing I wouldn’t regret missing on EME is JAMMING!!!
GL 73, Petros SV3AAF
Thanks for the input on these two radios
Just to let all know I have always run a mast mounted lna designed by VE7BQH .25nf/19db which has worked very well for me on EME
I think for a comparison i will get the TS-2000 receive modified as per Russ K2TXB just to try to see if there is any difference between the 736r and my TS-200
Hope to some comparisons to report over the next month or so
Thanks Ian VA7SW//VE7IRA
BTW when working EME I have on WSJT the RX DB set to 0 when I turn per amp off there DB on WSJT goes to –15 so the pre amp is definitely working
I found this pdf on the web.
You may find it useful even though it has some math prerequisites :-)
Best 73s de SV1CAL
--- Στις Σάβ., 16/02/13, ο/η moon-net-request(a)mailman.pe1itr.com <moon-net-request(a)mailman.pe1itr.com> έγραψε:
Από: moon-net-request(a)mailman.pe1itr.com <moon-net-request(a)mailman.pe1itr.com>
Θέμα: Moon-net Digest, Vol 92, Issue 9
Ημερομηνία: Σάββατο, 16 Φεβρουάριος 2013, 13:00
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1. Info about my 2,4 meter Prodeline offset dish ?? (John Lambo)
Date: Sat, 16 Feb 2013 11:44:22 +0100
From: John Lambo <pa7jb(a)ziggo.nl>
Subject: [Moon-Net] Info about my 2,4 meter Prodeline offset dish ??
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Can some one tell me more about the focuspoint off my 2,4 meter
Prodeline off set dish ??
I take away the suport arm where normale the LNB or TX is.
beacuse the feed i use for 23cm is to big so i had to make
But after a long time off work i like to get a beter result on 24ghz .
For now i see 0,9 db moonnoise and 10,5 db sunnnoise with a HM preamp
NF off 2,7 db
This can be beter !!!
To find a focus for a primefocus dish this is not so diffucult.
But for a offset dish this is a other story:-)
I know that there are some amateurs qrv with a offset dish .
All info is welcome ....
Sorry if this is not all correct English:-)
73 John PA7JB
PS can some one also tell be where the facecenter is in a RA3AQ feed for
a offset dish ??
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End of Moon-net
Digest, Vol 92, Issue 9
We have our single entry visa for Ghana! It took a whole day
travelling to the Ghanese embassy and waiting, getting interviewed,
filling in the right answers (in capitals) and showing the proof of
our returnticket and yellow fever vaccination, but eventually we got a
sticker in our passports. All on schedule now!
This was not cheap. The three of us in total €360 (450$).
Such a waste.... But with help of our sponsors the damage is less
painful though donations still are more than welcome!
Thank for your votes for the best EME VHF DXpedition 2012.
The two men DXpedition operated by PA3CEE Eltje and René PE1L to
Uganda (5X1EME) won. We're proud that all our African DXpeditions
since 2009 got the first place. It's clear that we do our best, never
resting and persisting in getting all of you in the log and we want to
promise you that our policy hasn't changed for 9G5EME. You know us by
know. We won't give up! Thanks for your trust gents! We're proud!
For 144 MHz we do use the same setup as we used in Gambia and Uganda,
2 x 8 Xpol a WA2ODO preamp and modest power.
If all ok we will have a small 70cm AND 23 cm setup with us.
144 MHz start april 12th till april 14th (condx are not that great but
OK for the bigger stations)
1296 MHz april 19th
144 Mhz april 20th (ARI contest)
432 MHz april 21th
144 MHz april 22nd till april 27th (22-24 good condx for smaller stations)
Power shutdowns are common in Africa so schedule can change and don't
wait to make a contact with us till the last day.
Visit our website www.emelogger.com/ghana/
Johan, Eltje and Rene
Again, thanks to everyone for even more input, I'm trying to gather new ideas to squeeze every bit I can out of my system.
A couple people have commented on my 2m array using 50' phasing harness. Perhaps I have made a mistake so I will explain how I come up with 50'.
a 2m 4 x 12 with 4 meter spacing both H and V fed from the back that would make each cable roughly 12 feet, 6 feet down to the center, and 6 feet across to the middle. 12ft x 4 antennas is 48 AKA 50'. Now of course I could go diagnolly which would be about 8.5' x 4 which is 35 feet.
Then, you still need a single run from the rear center down the center of the boom, which will be roughly another 4 or 5 meters to the tower mast
Did I make a simple mistake here?
Hi to all
I have 2
stock of MAUDIO-Delta66 to sell.
December 2012 complete of case, manual, CD, and external box.
me if interested.
VY 73 de
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Success tonight with Brett VK2CBD
managed to hear and see him -19 in JT65 and easy copy in CW using spectran
so now I need to finish off housing the PA out by the dish and the PSUs
run some coax and control lines and I am ready to go :)
thanks to Brett for the sigs and confirming my system works!
73 Simon ZL4PLM
A step closer to QRV on 23!
Check out more information on the world 50 MHz and Up : www.zl4plm.com
At 11:12 AM 2/27/2013, radioman390(a)cs.com wrote:
>I don't know how to categorize this, but strange propagation may
>result from these activities
>Moon mailing list
Only replying to MoonNet and Moonbounce reflectors:
A group of eme and satellite ham operators in AK participated in an
experiment using 50 & 144 MHz while HAARP excited the ionosphere back
in 1998 and 1999. We were able to detect backscattered signals on
144 from signals produced by eme stations pointing into the HAARP
excited sky. This was documented by QST.
It is believed that artificially stimulated FAI were created. We
detected Doppler effects that suggested charged particle velocities
of up to 260km/hr. No signals were detected on 50-MHz (we had fewer
resources and smaller transmitting stations on 50-MHz).
Effects from the current HAARP transmission would probably be
significantly greater. HAARP array was only partially complete in
1998-99 so "heating" effects were much smaller. Stations at ms range
from HAARP would be able to utilize the area above HAARP. This would
include both AK and YT stations.
73, Ed - KL7UW