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Poruke - 9a6c

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1
Kad ima volje, ima i načina.

Ko, ka, prvo, locirati, uapsiti, transferirati i na skrovitom mjestu
Utamničili ukv managera.

Potom istog suočiti s pravilima natjecanja pa ga overdozirati janjetinom i malvazijom (ovo je QV izbor, nije moj) i onda mu podmetnuti papir da potpiše kako nas puno đaba kreči.

Pa tako i ja🤪

2
?
Ja mislim da je radar ispravan, ako je to uopće bitno. Izbor kategorije nije definiran nositeljem pozivne oznake, nego brojem ljudi koji rade u kontestu. Zašto ja ne bih skupio ekipu i opremu pa da radimo u multi kategoriji?
Ili radio sam pod klupskim znakom?

Ovakvih smo se arhaičnih razmišljanja riješili odavno...ili nismo?

CU in the contest😉



3
Croatian 50/70 MHz contest / Odg: 9a 50/70 contest
«  : 24. Lipanj. 2021, 17:03:30 »
E blago meni...kad sam ja programirao u BASICU...nema ni 40 godina :'(  Kako vrijeme prolazi...

Šta mora bit, bit će, ali ovo nema veze s Krešom. Ja bi rekao da je greška sustavna i ponavlja se.

A ti si me riješio u tri linije ::)

E, a nisan ni pita kako doć do onih UPLOAD rezultata?

 :o

4
Croatian 50/70 MHz contest / Odg: 9a 50/70 contest
«  : 24. Lipanj. 2021, 16:44:42 »
Je, odlično.

Ali u tablici s linkovima na rezultate lijepo stoji da su rezultati prijavljeni, a kad odaberem 9A kao zemlju iznad tablice s ovim prijavljenim rezultatima, dobijem ovo:
https://www.hamradio.hr/vhfrobot/cc_log.php?What=p&CID=2013-09-07

Ni na tvom ni na mm linku nema uvida u log ili error listu, mogućnosti pregleda statistike bilo koje vrste.

Ne bi mi palo ni na kraj pameti kopati po robotu i rezultate tražiti pod UPLOAD dugmićem. A na mom robotu bodovi su u bruttu, dakle bez UBN-a što ne mora odgovarati konačnom stanju, meni su skinuli skoro 10%, ali ajde, "sačuvao" sam treće mjesto...

I onda odem na slovenski robot da pogledam samog sebe u detalje...

5
Croatian 50/70 MHz contest / Odg: 9a 50/70 contest
«  : 24. Lipanj. 2021, 12:56:06 »
Kajem se, razlika je drastična, ali ishod isti - nula bodova.

IARU robot uredno obrađuje rezultate i šalje nekakva priznanja, ali kod nas nema pomaka. Uostalom, za 2013 su još ti drveni rezultati, a kod mene dva pehara?

Zašto sam ih dobio? Na njima piše da su za IARU VHF i UHF, poslao ih je HRS - na temelju čega? NIsam to valjda dobio za prijavljene rezultate? Jer drugih nema na vidiku, log se ne vidi i sve tako u krug.

Nije lako branit neobranjivo, ja bih završio, sve ovo je samo retorika na račun našeg UKV managera i njegovih prethodnika koji se manje više nisu pomakli korak naprijed.

ZAšto smo ustanovili paralelna natjecanja 9A VHF CW i 9A microwave, a za IARU VHF i UHF itd nismo?

Pitanja su retorička pa zato QST  i NHF.

GG


6
Croatian 50/70 MHz contest / 9a 50/70 contest
«  : 24. Lipanj. 2021, 10:07:49 »
Eto ga ante portas pa se pitam kakvog smisla ima njegov termin u vrijeme Tesla memorijala kad nitko za to i ne mari i ne zna.

Je, prije 20 godina dalo su tu nalupati 4-500 veza, ali danas, iskjuzmi, termin je banana. Onda je bilo nacionalnih FD natjecanja i puno slučajnih prolaznika. A danas se najviše prolazi na FT8 pa nam je i broj veza ludilo.

Strah me i pomisliti koje sve napore naši najodgovorniji UKV ljudi ulažu da contest izroni iz mulja...

U čemu je problem, zašto se jednostavno taj contest ne premjesti u termin sveopćeg IARU 6m contesta? Ako mogu 9A microwave ili 9A VHF CW, može i ovo.

Udrobiti ga u Tesla memorijal ima smisla jedino ako je smisao u besmislu, a to se najbolje vidi po rezultatima i broju veza.

O besmislu vezanom za IARU R1 VHF i UHF&UP ćemo kad dođe vrijeme. NA našem robotu rezultai će do smrti ostat privremeni, logovi top secret, a za 2013 sam uredno dobio dva pokala za plasmane u oba?

Slovenci mogu, mi ne možemo?  A naš robot pruža kudikamo više analitičkih alata od njihovog.

CU

7
Alpe adria UHF/SHF / ALPE ADRIA UHF 2021
«  : 16. Lipanj. 2021, 11:31:07 »
I tako, još malo pa nedjelja…

Ovaj put bez mene unatoč prethodnoj najavi.


GG

8
9A microwave contest / Odg: 9A microwave 2021
«  : 13. Lipanj. 2021, 17:12:39 »
Malo smo off topic, ali rekao bih da je problem sve vremenski pa možda i nismo😔

9
UKV tehnika / Odg: SERVICE MANUAL
«  : 11. Lipanj. 2021, 20:14:19 »
Priupitaj 9a2bw na mail, ima da u klubu.


GG

10
9A microwave contest / Odg: 9A microwave 2021
«  : 11. Lipanj. 2021, 15:04:19 »
Momci, javio se Matej Ok1TEH koji prati ovu našu raspravu oko mikrovalova i poslao malo duži mail s molbom da ga ovdje objavim, a mislim da ga vrijedi pročitati. Na engleskom je, ali uz malu pomoć Dr Googla mislim da će biti zanimljivo ;)

***********************************************************************************


Hi guys,
I'd like to write out few findings related to problem with 23cm QRM
from commercial or military towers and how to remove it. First you
must find out if the signal is in band or not by some spectral analyzer.



1) QRM by inband commercial signal
If the signal make problem in band, there is usually very little
what you can do.. One partial solution is to build up narrow dish
with high front to back suppression and use LNA with high IP3..



2) QRM by outband signal
If the QRM is caused by signal out of band, it's very important to
find out, how far (MHz) is the unwanted signal. At my home QTH in Prague
I had problem by DVBT2 tower operational some 300m far with few kW.
It was running DVBT some 300MHz below 1296 MHz so in this
case it was relatively easy to buy or make low ATT filter.


Making such a filter is relatively easy, we made such a filter
to suppress the mirror for the 28/1296 MHz transverter check out:
http://www.ok2kkw.com/00000104/preselector/bpf_23cm.htm
I asked to Beert, PE1RKI, because he has very well done boxes and machinery
and at least it saved lot of time. In the case it was easy because the
source of QRM was several hundreds MHz away so the
cross attenuation was only of 0,2dB.



Much worse situation happed at our contest QTH JO60JJ,
as we suffer from radar from from 14,4km far Auersberg radar
which is operating around 1259 MHz with 2,5 MW in pulse.
As the result I asked to RKI to prepare special narrow BPF version
however due to very narrow bandwidth and very high suppression
it has relatively higher cross attenuation. It's because of problem
with Q at this high frequency. Luckily we found out that such a filter
at our case was working well even when it was placed between
LNA and transverter, so the higher attenuation was still acceptable
because the whole noise figure wasn't  corrupted so much
(we use separated RX/TX path).



By the way if you have such a problem at 2m with FM BC,

check out https://www.antennas-amplifiers.com/144mhz-bandpass-filter-bpf

it's great BPF and I use it with good success..



3) QRM by usage of bad kind of LNA for contesting
For city environment with strong outband signal it's better to use
LNAs with very high IP3 like MMIC PGA103+ or some alternative.
Don't use 2 stage LNAs like VLNA from G4DDK or old LNA
with MGF1302, they are fine for EME, but not for city environment.

I had bad experience with LNAs from SSB electronics, little bit better
are HEMTs (Kuhne), better is PGA103+ but currently the best is probably LNA
from US4ICI with SKY67151, compared to PGA103 it has much lower NF
https://vhfdesign.com/lnas/lna-eme-sky67151-for-23cm-and-21cm-bands.html
Remember for 23cm tropo contests that you really don't have to use 0,1dB NF LNA,
anything below cca 0,8dB is ok (because of high thermal noise from background)



4) Operation at on4kst chat
I read your discussion, It's not easy task.



At 23cm I used to ask to more people, because I use 2 or 3 (since June)

independent antennas, so I can turn them to more stations at the same time.

Sometime it's problematic that you ask somebody for chat and you are called

at random by some other local station, so sked partner has to wait and with

nowaday smaller patience he became to be angry, that he must wait for you...



I always try to do my best and ask stations only if I checked at Airscout
that airplane is already coming. But guys please release that the situation
in Middle Europe is far different to some DX area like 9A. We oftenly work
30 stations on 23cm during first 1 hour of contest so the pileup is big
however when you wait and ask some 9A station later like around 19utc
when you have more time for skeds, at the meantime he often go QRT
or try some other band.. An another thing is QRM situation, I often ask
the sked partner to move let's say to  .310 or higher.
During some contests it's very problematic to find any free frequency
for CQ between 1296.150 to 1296.290 MHz...



In any case if you are fed-up with the too fast chat traffic, try use our VUSC

contest log because it has it's own KST chat client with very good

user text filters. If you are QRV 23cm, please write it at your name in

chat and if you are just listening, please select in KST chat that you are

"off the chat" so then is station marked with () and almost nobody will bother you.



At the end I must say that S5, 9A and YU operators are very well skilled
in CW/SSB operation so it's big pleasure to work you. And yes of course

please always send full rst+nr + loc code, the situation when
somebody send rst+nr only I don't like either hi. Last words: if you are small

stations with 10W, please realize that Airplanes are great help so even with

your small setup if you know CW, it has sense to try QSO up to 500 km,

just give it a try and please be patience hi.



73
Matej, OK1TEH

********************

Najbolje od svega mi je što je teško naći slobodnu frekvenciju  i da postoji pile up na 23 cm, e da mi je to doživit...

Naprid naši!

73 GG

11
9A microwave contest / Odg: 9A microwave 2021
«  : 10. Lipanj. 2021, 15:29:10 »
E kad mi vrag ne da mira...

Vidićemo kako će bit u AA... Povrh kuće su crkva i groblje i normalno da nema šuma😋

Grobna tišina na 151 m asl...

GG

12
Pravila UKV natjecanja / Odg: 9A Digital Activity Contest
«  : 10. Lipanj. 2021, 15:26:16 »
Moglo se ovo riješiti i bez nepotrebne nervoze.

Hoćemo li biti EU ft8 robot krajnje je nebitno.
Podržimo 9a momke.

GG

13
9A microwave contest / Odg: 9A microwave 2021
«  : 10. Lipanj. 2021, 14:50:06 »
E, lako je tebi govorit, makni lna... Ionako san star i gluv, makni mi slušni aparat i di san onda?

Radije iden na brdo iznad kuće pa pomalo.

I ko će krivit one kabliće i sma konektore?

Srediću ja to nekako.

Za AA sve je spakirano😉

14
Pravila UKV natjecanja / Odg: 9A Digital Activity Contest
«  : 10. Lipanj. 2021, 10:24:41 »
Star jesam i ne vidim dobro, ali jedina Opća pravila koja sam locirao na ovoj stranici odnose se na 24 satna natjecanja, a ovo to nije.
Ni u pravilima ta ovo natjecanje nisam vidio da se poništavajtzv unique veze.

Na temelju čega su onda poništene?

Ne bih volio bahati, ali pred koju godinu smo i oko kv natjecanja imali neugodnu situaciju oko primjene pravila i administriranja robotom pa ne bih volio da se to i ovdje ponovi.

Problem komunikacije s odgovornom osobom neće se riješiti ovako.

Nije posao nas natjecatelja da prodajemo proizvide saveza i posve je besmislenom kažnjavati nekog zbog veze koju nitko drugi nije uspio uraditi. Osim ako veza nije održana, a upisana je.
A to je nešto drugo.

GG

15
9A microwave contest / Odg: 9A microwave 2021
«  : 10. Lipanj. 2021, 09:16:17 »
Adam,

To je onaj transverteri koji je bio kod tebe na kanalu, znači DB6NT tvtr, lna i mali qro pa iza njega dg0ve na kojem piše 20w, a ti izmjerilo 50 ;D

Na lokaciji u jn73ws sve bilo ok, a u jn83cw šum konstantno 20 dB iznad devetke.

Čini mi se da je Bert spominjao i notch koji bi svakako pomogao oko neke i band smetnje, a sam filter na 23 cm svakako ne. Ipak mu je passband u MHz.

Za sad čekam i prijavit ću utiske😉

GG

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