Moon-net March 2013

moon-net@mailman.pe1itr.com

136 participants
179 discussions

by Pete M

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 -- ++++++CONFIDENTIALITY NOTICE++++++ The information in this email may be confidential and/or privileged. This email is intended to be reviewed by only the individual or organization named above. If you are not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any review, dissemination or copying of this email and its attachments, if any, or the information contained herein is prohibited. If you have received this email in error, please immediately notify the sender by return email and delete this email from your system.

3 months, 4 weeks

EME Jamming

by SV3AAF Petros

Hello moonbouncers, 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 216.215.40.193) 11/19 17:05 Why Larry .... they on 142 also? (VE3KH Kevin ON FN03aj 24.141.203.45) 11/19 17:06 They are calling me to get a contest poitn and it ain't gonna happen!! (W7IUV Larry WA DN07dg 216.215.40.193) 11/19 17:08 Thansk Larry 73 ... Yes, I have been jumped by a quite a few stations (VE3KH Kevin ON FN03aj 24.141.203.45) 11/20 17:47 Also hr k1jt calling me -22 but not ans him (KN4SM/5WL/KW Jerry VA FM16qt 24.241.251.86) 11/20 18:02 Contest = reduced courtesy! (K5DOG/2M Stevedog NM DM52xw 65.127.140.122) 11/20 18:04 Yes, K1JT and W3SZ can hear on gold tooth. (K5DOG/2M Stevedog NM DM52xw 65.127.140.122) One thing I wouldn’t regret missing on EME is JAMMING!!! GL 73, Petros SV3AAF

9 years, 3 months

The 144 MHz EME Newsletter by DF2ZC, January 2013 Issue...

by DF2ZC

...is now ready for download at http://www.df2zc.de/newsletter/ vy 73 Bernd DF2ZC (JO30RN) www.df2zc.de ____________________________________________ 144 MHz EME NewsLetter: www.df2zc.de/newsletter twitter.com/df2zc 144 MHz DXCC #21 144 MHz WAC Kenwood TS 2000 2 x GU74b by LZ2US 4 x 2M18XXX 21 dBd full elevation

9 years, 6 months

FT-736R vs TS-2000

by Ian McCloy

Hi All 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

9 years, 11 months

Antenna location question

by natewac＠aol.com

? Now that the wx is starting to improve I'm beginning to look around the yard for a good place for installation of a eme tower. My problem is that I have a boatload of trees near the house. I do have an open yard but thats about 150 -200 ft of hardline run. So my question is...How important is it to stay clear of trees when doing eme on 2 meters? I'm thinking on 2 meters the trees will be less of an issue than the 200 ft?line loss. A little help before I commit to the installation. ? N8WAC

9 years, 12 months

What 4x9 elements antenna choose?

by Juan Antonio

Hi all, I am in the crossroads, I have the intention of installing a set of 4x9 elements with no more of 5.0 meters boom long, because I would like to take advantage of my G5500 rotor. * M2/2M9SSB/14.1dBi/20dB/4.41m/2.26Kgr. * WIMO (DK7ZB)/WY209/14.5dBi/24dB/5.0m/3.5Kgr. * EANTENNAS/144LFA9/14.16dBi/24,3dB/4.5m/4.9Kgr. * EANTENNAS/144OWL/14.57dBi/24,53dB/5.0m/5.4Kgr. The idea is purchasing something commercial to make sure the success, and you surely know other brands but perhaps it is not easy to get from Spain. 144OWL seem to see the best design but it is also the heavier, although the other numbers are very close. To find somebody who has proved several brands is not very likely, but perhaps different hams have compared its performance between them. I would like to know your experience and your opinion through the moon-net or my e-mail. Thank you very much in advance. Juan Antonio EA4CYQ

9 years, 12 months

Re: [Moon-Net] Info about my 2, 4 meter Prodeline offset dish ?? (John Lambo)

by Michael Margaras

Hi John, I found this pdf on the web. http://www.vhfcomm.co.uk/pdf/Offset%20Dish%201-95.pdf 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 Προς: moon-net(a)mailman.pe1itr.com Ημερομηνία: Σάββατο, 16 Φεβρουάριος 2013, 13:00 Send Moon-net mailing list submissions to moon-net(a)mailman.pe1itr.com To subscribe or unsubscribe via the World Wide Web, visit http://mailman.pe1itr.com/mailman/listinfo/moon-net or, via email, send a message with subject or body 'help' to moon-net-request(a)mailman.pe1itr.com You can reach the person managing the list at moon-net-owner(a)mailman.pe1itr.com When replying, please edit your Subject line so it is more specific than "Re: Contents of Moon-net digest..." Today's Topics: 1. Info about my 2,4 meter Prodeline offset dish ?? (John Lambo) ---------------------------------------------------------------------- Message: 1 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 ?? To: moon-net(a)mailman.pe1itr.com Message-ID: <511F6306.7020705(a)ziggo.nl> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Hello lunatics. 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. This beacuse the feed i use for 23cm is to big so i had to make something new. 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 ?? ------------------------------ _______________________________________________ Moon-Net posting and subscription instructions are at http://www.nlsa.com/nets/moon-net-help.html End of Moon-net Digest, Vol 92, Issue 9 ***************************************

9 years, 12 months

Fw: Some incentive now

by serge

----- Original Message ----- From: serge To: natewac(a)aol.com Sent: Saturday, March 30, 2013 7:23 AM Subject: Re: [Moon-Net] Some incentive now Congratulations Tony. I want to move where you live. Keep up the good work.By the way were you using WSJT?? The reason I ask is from time to time WSJT will give you a false decode!! but who knows?? Regardless it gave you the incentive that you need to continue & that in itself is a measure of success. Congratulations Serge/VE1KG ----- Original Message ----- From: natewac(a)aol.com To: moon-net(a)mailman.pe1itr.com Sent: Saturday, March 30, 2013 4:25 AM Subject: [Moon-Net] Some incentive now Well I just rx'd my first station off the moon. Just rx'd G8BCG. I only have a 7 element with no elevation and no preamp. I do have a kilo coming in the next week or so. It's slowly coming together. And this first station off the moon was a really cool. Even if it was only rx. PS.............Work on the 2 meter station soon as the wx breaks. N8WAC,Tony ------------------------------------------------------------------------------ _______________________________________________ Moon-Net posting and subscription instructions are at http://www.nlsa.com/nets/moon-net-help.html

10 years

Some incentive now

by natewac＠aol.com

Well I just rx'd my first station off the moon. Just rx'd G8BCG. I only have a 7 element with no elevation and no preamp. I do have a kilo coming in the next week or so. It's slowly coming together. And this first station off the moon was a really cool. Even if it was only rx. ? PS.............Work on the 2 meter station soon as the wx breaks. ? N8WAC,Tony

10 years

Re: [Moon-Net] [Moon] Latching relay Ducommun

by TexasRF＠aol.com

Howard, did you try using a series resonant C for a bypass at 23cm? Or quarter wave sleeve choke with the power lead? Or some ferrite beads (like a balun is made) with the power lead? 73, Gerald K5GW In a message dated 3/29/2013 7:22:49 A.M. Central Daylight Time, howard(a)g4cch.com writes: Hi Andy, Did you get any answers to your question..??? Like you, I have a few Ducommun latching coaxial relays and would like to use them for LNA protection at the feedpoint. They require a +ve pulse to set or reset the relay. I built a circuit very similar to W6PQL's except I used MOSFETS to drive the relay coils. It was placed up at the feedpoint next to the relay in a small diecast box. It worked fine on 13cm, but on 23cm with more than 100W the relay unlatched itself and I zapped my LNA several times. Clearly, RF was getting into the circuitry, so I tried chokes and decoupling caps on the power rail and PTT input, but that didn't fix the problem. My next step was to try the same on the relay side connections, but never got that far... Would be interested to know if you have decided on a solution, and if you have tried anything yet..??? Best 73 Howard, G4CCH -----Original Message----- From: moon-bounces(a)moonbounce.info [mailto:moon-bounces@moonbounce.info] On Behalf Of Andy Brian Sent: 25 March 2013 20:17 To: moon-net(a)mailman.pe1itr.com; moon(a)moonbounce.info Subject: [Moon] Latching relay Ducommun Hi, I have at home some Ducommun 12V 2SE1T11JB coaxial latching relais which I want to use for switching LNA on and off near septum feed. Anyone out there using primitive controller like on page http://www.ok2kkw.com/latching_relay_control.gif If I'm right resitor only preventing heating the coils and if there is 200mA current than resitors are 4V/0.2A=20ohm. Or is any better and easy way to use this latching relais for switching on/off LNA on the septum feed? All suggestion are welcome, 73s Andy _______________________________________________ Moon mailing list Moon(a)moonbounce.info http://lists.moonbounce.info/cgi-bin/mailman/listinfo/moon ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.3267 / Virus Database: 3160/6202 - Release Date: 03/24/13 ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.3267 / Virus Database: 3160/6202 - Release Date: 03/24/13 ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.3267 / Virus Database: 3161/6211 - Release Date: 03/28/13 _______________________________________________ Moon-Net posting and subscription instructions are at http://www.nlsa.com/nets/moon-net-help.html

10 years

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Moon-net March 2013