[Moon] Fw: [Moon-Net] Z21EME on 2m and 70cm with 1Y
serge
ve1kg at eastlink.ca
Wed Nov 5 17:46:51 CET 2014
Ed when your done can you help me with 10ghz???
Serge
----- Original Message -----
From: Edward R Cole
To: Peter Blair ; ok1teh Petrzilka ; moon at moonbounce.info
Sent: Wednesday, November 05, 2014 4:39 PM
Subject: Re: [Moon] Fw: [Moon-Net] Z21EME on 2m and 70cm with 1Y
With limited funds, I am having to chose which bands to activate. I have worked a small handful of stations on 70cm using my dish with rudimentary feed and 100w, but am not encouraged to invest for 1000w and full-blown feed for that band. 70cm-eme is in limbo as far as my future. I have a 125w amp but mixed feelings whether to build a good feed for 70cm or just skip it. 125w would only be good for JT65.
Instead I will be on 23cm-eme with both CW & JT65C. G4CCH was my first CW-eme contact running only 50w. Now madly working to have 100w+ ready for this weekend.
Then I will work on my 6m-eme system and finishing the 1296 300w amp. Winter project will be working on 3400 for a goal of spring QRV.
So there you have it. 70cm doesn't attract me.
73, Ed - KL7UW
At 02:15 AM 11/5/2014, Peter Blair wrote:
Higher bands are going up, but this is caused only because of better and cheaper high power PAs.
Not really Matej, they do help, but I think the real reason is THE CHALLENGE....people built difficult / impossible tube PAs in the past ( OZ9CRâ?Ts) and today put TWTs with 3kV+ at the dish focus. The challenge to optimise the system and to make difficult QSOs is to them more of a challenge than grid collecting.
Well done on your QSO, you do put real effort into optimising your systems, I know.
73 Peter G3LTF
From: ok1teh Petrzilka
Sent: Wednesday, November 05, 2014 10:46 AM
To: moon at moonbounce.info
Subject: Re: [Moon] Fw: [Moon-Net] Z21EME on 2m and 70cm with 1Y
Hmm better statistics would show another thing: there aren't
new hamradio EME/VHF DX operators below age of 30. Community
is getting older so total number of active stations in any mode is
going down. Higher bands are going up, but this is caused
only because of better and cheaper high power PAs. Next thing
is electromagnetic smog which is increasing rapidly especially
on 70cm. Saying that WSJT is causing the drop down of EME
operation in contest without considering similar variables
isn't reliable indeed.
Other thing is how to get more young people in our hobby
and especially on VHF & up bands. I would say that abandoning
CW requirement for HF license was the biggest mistake,
but it's just my humble opinion..
73
Matej, OK1TEH
---------- Původnà zpráva ----------
Od: sm4ive <sm4ive at telia.com>
Komu: ok1dfc at seznam.cz, Martin Andrew <martin.andrew at btinternet.com>
Datum: 5. 11. 2014 10:20:31
PÅTedmÄ>t: Re: [Moon] Fw: [Moon-Net] Z21EME on 2m and 70cm with 1Y
It could be interesting to look at CT1DMK statistik regarding ARRL
If you take a look from 2002 and forward the year that Wsjt was suposed to be an entry mode.The sceen is very clear what happend on the bands from 70cm and up
It shows clearly
2010 i worked 117 qso on 23 cm
Still lots of cw but same trend as 70cm
73 Lars sm4ive
Skickat från min Samsung Mobil
-------- Originalmeddelande --------
Från: ok1dfc at seznam.cz
Datum:2014-11-05 10:26 (GMT+01:00)
Till: Martin Andrew
Kopia: moon at moonbounce.info
Rubrik: Re: [Moon] Fw: [Moon-Net] Z21EME on 2m and 70cm with 1Y
Martin, problem is that your setup is not too small, but activity is to low. I agree with Lars. I stop to work on 432 MHz CW activity weekends year ago, because CQing 4 hours with my QRO and worked 9 stations! It is not that I do not hear them, they are not on the band. This weekend I will try to work on 1296 MHz to compare activity with previous years. This year MW ARRL was very sad! Sample is 13cm band, easy to reach to be there with small setup. During 13 cm weekend Franta OK1CA with 10m dish worked 23 stations, OK1KKD with really nice setup worked 23 stations. Do you know why? No activity. OK1KKD was full time on and did not miss any station, so 23 was maximum to do. Two years ago I have in log 89 stations on 13cm. So this is reason.
--
Zdenek - OK1DFC
www.ok1dfc.com
QRV 144 - 3400 MHz EME - QRO and 10m DISH
WAC 432 - 1296 - 2320 MHz
DXCC 432 MHz
---------- Původnà zpráva ----------
Od: Martin Andrew <martin.andrew at btinternet.com>
Komu: moon at moonbounce.info
Datum: 5. 11. 2014 10:02:03
PÅTedmÄ>t: Re: [Moon] Fw: [Moon-Net] Z21EME on 2m and 70cm with 1Y
Matej,
I have to agree. Tried 432MHz EME, 400 Watt and 4X19 earlier in the year.
23 initials was all I could work. Maybe the wrong time of year, maybe my setup was too
small.
I just put it down to low activity during winter months.
Meantime I am wondering who has worked 'GM' in the last few months on 432MHz.
Martin, GM6VXB
----- Original Message -----
From: ok1teh Petrzilka
To: moon at moonbounce.info
Sent: Wednesday, November 05, 2014 8:27 AM
Subject: Re: [Moon] Fw: [Moon-Net] Z21EME on 2m and 70cm with 1Y
With such an attitude of big guns on 70cm
it's no surprise that newcomers with small
stations will lose their interest and move on
another band..
Matej, OK1TEH
---------- Původnà zpráva ----------
Od: sm4ive <sm4ive at telia.com>
Komu: ok1teh Petrzilka <ok1teh at seznam.cz>, moon at moonbounce.info
Datum: 5. 11. 2014 8:19:29
PÅTedmÄ>t: SV: Re: [Moon] Fw: [Moon-Net] Z21EME on 2m and 70cm with 1Y
Hi i will probably not be QRV i have lost intrest
And since most stations are in dodlemode its just waist of time
Gl
Lars Sm4ive
Skickat från min Samsung Mobil
-------- Originalmeddelande --------
Från: ok1teh Petrzilka
Datum:2014-11-05 08:50 (GMT+01:00)
Till: moon at moonbounce.info
Rubrik: Re: [Moon] Fw: [Moon-Net] Z21EME on 2m and 70cm with 1Y
tnx Lars, you know I haven't posted that spot about Z21
at moon at moonbounce.info myself..
73 & hope to work you during ARRL EME Contest on 70cm as usual
Matej, OK1TEH
---------- Původnà zpráva ----------
Od: Lars Pettersson <sm4ive at telia.com>
Komu: moon at moonbounce.info
Datum: 5. 11. 2014 6:28:39
PÅTedmÄ>t: Re: [Moon] Fw: [Moon-Net] Z21EME on 2m and 70cm with 1Y
congratulations. Matej!
Now im convinced !!!!
I will take down my big Dish its just no need for BIG antennas anymore, !!
Advantage!! 1 Yagi less wind damage and you can sleep well during storms.
So now we got the proff Size dosent matter :-)
Congrats again
73 Lars SM4IVE
serge skrev 2014-11-04 23:27:
----- Original Message -----
From: serge
To: ok1teh Petrzilka ; moon-net at mailman.pe1itr.com ; moon-net at googlegroups.com
Sent: Tuesday, November 04, 2014 10:18 PM
Subject: Re: [Moon-Net] Z21EME on 2m and 70cm with 1Y
I was a witness to this unbelievable event Matej for president!!!! congratulations. I am proud to know you
Serge VE1KG
----- Original Message -----
From: ok1teh Petrzilka
To: moon-net at mailman.pe1itr.com ; moon-net at googlegroups.com
Sent: Tuesday, November 04, 2014 11:21 AM
Subject: [Moon-Net] Z21EME on 2m and 70cm with 1Y
Hello all,
just for an info, yesterday I worked Z21EME on 2m
with unexpectedly booming signals -24dB in peek,
QSO was done in less than 10 minutes after my first
call. It was nice surprise for me because during
PE1L's expeditions we usual made it after several days
of attempts. I used on 2m single 10el dk7zb with noisy
background (Prague), 16m long H1000 cable and
MGF1302 LNA in shack.
But what was absolutely incredible for me, I worked Z21EME
even on 432 MHz!! It's my first ever 1Y to 1Y EME QSO on
this band. I remember Bernd's DL7APV article in Dubus that
something like that should be possible due to VK3UM's calculations
but I've never thought that it's possible for me because of big noise.
First when I logged at HB9Q chat, I saw that Z21EME was
spotted by OK1DFC -12dB and better than -22dB by PA2V
with his 4x23el LFA yagi. As far I knew that Peter PA2V
had the same RX capabilities with his single 23el LFA yagi
like me I realized that it could be possible to see Z21EME
some 5dB worse, so around -27dB. Later Z21EME was decoded
by NC1I -12dB and I saw Frank NC1I during his QSO -15dB.
After that I decoded OH6UW -27dB and later even G4EZP -29dB.
What a condx! While I was watching in both periods I realized
that there is one weak trace only i Z21EME period. During QSO
with another station I saw ST messages. Yes it's Z21EME, WOW.
And after that - pop up, I decoded -29dB msg! After that I started calling
and nothing was decoded so I wrote Z21EME sri missed you in noise,
tnx for test. They wrote sri we saw you -27dB! Since then I was
watching their frequency and started calling when they got stronger
again. Then 2 periods of break for PA cooling and suddenly I
decoded both callsign with OOO ;-) Signal felt down in noise again
but after 12min I finally decoded final RRR. ST can be seen on
my printscreen of SpecJT. After QSO Chris from Z21EME wrote
me that they saw me -25dB in peek, truly amazing! I know that
guys like SM4IVE, etc would say hey that's cheating with such a
weak signal, but I don't care ;)
Pictures from QSOs at:
http://ok1teh.nagano.cz/eme/z21eme_70cm041114.png
http://ok1teh.nagano.cz/eme/z21eme_2m0301114.png
I still can't believe that Z21EME used on 70cm only 38el M2 and 400W
(directly next to antenna), but it seems be true. Before this 1Y - 1Y QSO
the smallest stations in my 70cm log were UA4AQL 2x26el 700W (-27dB)
and EA3XU 2x21elY 500W (-27dB).
My equipment at: http://ok1teh.nagano.cz/equip.htm
Conclusion: don't be shy to try work Z21EME with Single Yagi
on 2m and 70cm, it's possible!
73 & big tnx to Z21EME team
Matej, OK1TEH
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I only work real EME no chatts no Bagpipes
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73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
dubususa at gmail.com
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