|
Consider
some support of this web, please. Only this year were sent more,
than 1000 links abt. VHF+ issues.
Results of the
Russian EME
C-test.
Why without
OK in list? Linear
PAs.
Video
shot of 23cm
LNA by SQ1GQC.
Are you ready to
QSY your 23cm gear to 1298MHz & decrease
power to 50W only? Forecast related to
23cm. Graph from Tromso:
Aurora?
Few links
focused to
solar
observation is
gone (Solarham
predictions),
next
starts.
Sounds
from space, anew
hamradio satellites are supposedly
ON.(by
DD1US). Nano-VNA -> C and L
measure. 2024 Geminids Shower are gone. Let us
know how many 70cm QSOs over 1k km you did. MMC v OK
here.
TEP
DX
QSO
6474km from
Florida
(by
UT1FG/MM)
to
Argentina.
Why
microwawe?
What
the
mischiefs
prepare? Jan PA3FXB info: hamradio telescope
Dwingeloo (PI9RD)
receive Voyager I -> signals from QRB
25 billions km. New
DL7YC web page
focused to 47 & 76GHz EME.
Unusual shape of feed optimized offset
dish for cm bands. We have very good EME
condx right now. Ham radio travelling for μW QSOs by
DL3IAS. At
144MHz to Brazil. Next from OK hamradio founders was
OK1AW. DG7YBN has
new 70cm antenna
for contest quad.
Geminids. Just a few days ago we had great anniversary -
100 years since first OK hamradio QSO abroad! More
here. MMC from Chopok hill was very different
to OK vision, how the
contest operation looks like.
OM MMC results. Why the
Elecratf K3S transceivers are in VHF Contests so popular.
More
here +
here.
And here
and even
here. Where to buy
radiators. Small ON
2m PA and
23cm
amplifier. 13cm variable gain
driver.
RX noise
analysis. Arrival of
MS shower Geminids. Albeit the
peak will be on 14.12, already you
may prepare
long MS
DX QSOs. Don't
be confused, when the 2m field show the warning "High
MUF". It could be fault of FT8. 2m DXC
visit here.
Results of
a spring part of ARI EME C-test. Sophisticated soldering
tool. GaN
transistor
300W CW up to
13cm. This weekend would be some
tropo
condx, now to East? November
EME NewsLetter for 70cm and above.
OL9W in MMC 2024 story. And by
OK1FEN,
OL7C.
OK2KRT, OK2KAA. As
well as
OL3Z. We were at
home. Small note, but
nifty.
Tropo? TEP
condx to EU in Oct.
2024. ALC
&
AGC in multiband
transceiver.
Smart ALC? Update
of tropo
log OK1TEH
from 2024. He maybe will add the maps, which were deleted at old
web.
Be
ready.
This weekend you can wkd on 23cm
Portorico. But small
23cm antenna is
not enough for it. Defend
your PC.
70cm SSPA
->
how to do it.
More.
Multimeter
frm VR.
OK1TEH wkd last weekend 39 EME QSO by
single Yagi.
This year
ARRL EME
C-test is over. Our QSL from contests were send to
LOTW
server. Check our
QSOs list. At midnight starts
next run of ARRL EME
C-test 2024 in 50 to
1296MHz bands.
Current
Solar cycle 25. update.
Copper
bars for SSPA. Investment to
Chinese 2m
170W PA kit?
Polishing the scratched display by DD1US.
Leonids
MS shower is comming.
For such short bursts will be the best FSK441 mode.
Join it.
More.
Early peak
Cheap 2kW
motogenerator incl. inventor. The year membership fee in SP is
abt. 37€, in OK 73€, in G abt.100€.
Email
OK5XM, focused to small Chinese 2m driver. OK2SJF testing
East side
service generator HF to 470MHz. Claimed map of
FT8 QSOs of Monday 4.11. Use of digital mode for EME
& TEP is clear, but for tropo condx? Next tropo condx maybe would be by
forecast on the end of
next week on 16.11. on following
ARRL EME-C. Tropo condx to the East is unfortunately
blocked by take FT8 into one's head. Try our filtered version of
DXCLS. When you have VUSC contest log,
OK1DIX suggest download again new
VUSC 707 update,
here in zip version. Do you need new mast? If yes,check it
for example
here,
here or even
here. Leo Bodnár released
new GPSDO.
Do'nt be confused:
2m DX Cluster were now full of FT8 unreal spots (or probably from
one deranged operator)? SMD
High Q capacitors for low impedance power circuits of solid
state PA.
Horn antennas for microwave bands. Interesting transistor for 2m:
RF5L052K0CF4.
Cheap kit can be used as well as
driver
for
144 and
432 MHz PAs.
MMC2024 by
OK5P,
OK1KFH,
DK0NA,
SN9D. S9Z will be QRV EME
at 70cm till 20.11. IP IF trcv.
IC 7760. MMC pleasure
of
OK1TRJ
(OK1KKI). Claimed results in
OK,
OM,
9A,
DL+,
S5,
PA.
Today will be held 2m
NAC. Few words about MMC impressions:
OK1ZHS, OL7M,
claimed list
of UK stns & note to tropo towards OK, OM. 3 new DXCC for OK at 23cm - more
here. Nice 10GHz
contacts: Přemek OK1YA wkd G4KUX IO94 and F6DBI. This season of VHF/UHF contesting is
over. Send your MMC contest log to the IARU evaluation till
Wednesday. Slovak hamradio
meeting Tatry 2024.
OK2SJF
promotes, among others, as well as nifty
soldering iron
T12. Home made conversion of
Quansheng UV-K5 handheld into like a
VHF/UHF FM/HF radio
show you OM0ET. Already tomorrow will start
Marconi memorial VHF
Contest
2024. Verify your
skill operate digital
Morse code.
Just now join
tropo condx
from F/G/PA to OK. Try CW/SSB,
not FT8.
Try it
as well as by
F5LEN
forecast. Next week
check possibility of
Aurora. AD831
mixer up
to 70cm. XT2MD (Burkina Faso) on 2m
EME.
QRO &
remote st. blog
OK2ZAW.
EME travelling EA8DBM.
Antigua
&
Barbuda (V26AM)
QRV till
1.11.
at
23cm. New version of the
VUSC Contest log
v.7.07 has released.
Check the changes.
ČRK plan
3 days
C-logs delivery. New
EME Newsletter 2410 for 70cm
& up is ON. Web
page OK1TEH left Nagano
server and strike home.
Optimum
distance of 2m
in
stack antenna for EME operation. Last EME (Trenton 24)
conference
papers archive. August 47GHz
"session"
in Texas.
HF opening
from VK to EU. For total
beginners.
Who
will need 8m
HF band? Next
2m TEP DXs.
How high will be
final noise factor of
receiving cascade? Different
definition of noise factor. Radiotechnical principle
- Mixer.
DB6NT's clearance
sale.
New session
of NTMS? How to
weld aluminium
components. What do you think abt
high frequency of
TEP 2m condx in last days? Are they real?
RSGB
convention video incl.
data related to present Solar cycle 25. KA6U
EME trip around unused US locators.
Report from OK2A team participation as
by
OK1KRA in IARU UHF Contest 2024.
ARRL EME Contest just now. More
TEP QSOs today.
Has it something
common? You may check, how ČRK
will defend
amateur GHz bands. 60 years old
report
from July VHF Field day.This
year were these hills empty.
VHF-C 2024
OL7C &
OK1KCR.
Some
pages of Bessel formulas
may
helps - notably these tables. On 16.10
verify tropo
condx forecast to SM. UHF Contest 2024 u
OK5P.
Antenna setup 9A0BB for VHF-C.
Contest calendar by Icom. Future of
HF bands?
Report
from Aurora days on 9 - 11.Octobre. IARU UHF-C: claimed
participation in
DL and SP,
5P5T VHFC. Aurora
10.10.2024 -
pics from OK, log OK1TEH:
2m,
70cm,
S51ZO,
GM4DIJ/P. 2m TEP
ZD7-EA QRB 6100km.
2 or more ports divider and combiner
design info - for example
here,
here and first of all
here. More
of
gadgets. Optical observation of Aurora in OK
upset low level clouds. Caribean
new opportunity. KA6U
on the road again. Take care!
Don't miss
Aurora
forecast for
10-11th October, more here.
History of Au
in OK. UHFC by
OK2PPK. UHFC
2024 by:
OK1OPT,
OK1KPA,
OK1KKI,
OR6T,
DL3IAS. Claimed results in:
9A, S5,
OK, OM,
PA,
G. UHFC 2024 by:
OK2VMC,
IQ1KW,
9A4QV,
9A5M,
S59DGO,
S59P,
S50C,
S56P. Very
cheap 6cm
50W SSPA. Final result list of the Summer OK QRP
Contest find
here. Claimed ranking of the OK UHF/SHF Contest
here. Today is the last evening to send your
contest log from UHF/SHF Contest
to
IARU. OK1KUO
had HW problem.
In an
UHF Contest we get
sick. So we gave you points as
OK1KRA. July
Field day
C-test
in
OK &
OM by
IARU.
Czech telco authority
move
D-base of licence holders.
In an UHF C-test
we will run in limited scale as
OK1KRA.
Leave your announce
abt. participation in the
IARU Region I. UHF
/ SHF Contest 2024.
Weather forecast online. For download:
WSJT-X 2.7.0-rc7. Calc of dish feed
here
(zip).
ARI EME contest 24 by
PA2V.
KH6 70cm
KB7Q.
VHF Contest 2024 by:
DR2X,
OL1C,
OL4N, SN7L,
HA8V,
F6KFH. Upcoming weekend's
ARI EME Contest. EME Contest ARRL by
OK2AQ. He has an interference from 10GHz wifi link.
Video shot
IP0A
z VHF Contestu. ČRK publish
preliminary results of the OK VHF Contest.
Video from
Strojetice session and abt. HF trip
A8OK. One world-famous μW
ham W8MM passed away.
His product maybe save you already
money, even w/o
QSL.
VHF core of
OK1KCR club station you may find
around OK1FRD and on his web. Incl. report from
VHF C-test.
New EME
NewsLetter for 70cm
& above. W6SZ /
PA0ZN SK. RIP! Join
the
ARRL
EME Contest this weekend.
VHF Contest by
OK2O. Flashback of OK1KTW.
Crazy
handy TX. For test:
VHF
log OM3CPW. Then use
VUSC. Jarda OK2JI
decided to
sell his portable equipment. Czech radio.provider in hold on
status. VHF Contest
OK4C.
Anticipated
Aurora came after the Midnigth.
Au condx were
ON till Noon. CRC doesn't "support"
9cm bands.
VHF Contest 2024 by OK1FEN,
IP0A
+
map, Contest report
5P5T, OK1KCI. Nagano.cz
webhosting change.
Quite soon will start autumn season of
EME Contests -> on 21.9 is
ARRL EME C-test and
week later
ARI EME.
G4DBN's dish feed.
Claimed scores in DL.
Another QSL. Do
you know abt.
collision of VHF-C &
Weinheim tag.
VHF Contest 2024 by
DK0NA,
9A0BB,
OL2J,
OL3T,
OK1KKI. Claimed
list of
Italian
+
Slovak score.
SK records. VE3NEA: EME on HF edge -
JT 6m skimmer
SW - presentation. Hawaii
at 70cm:
opportunity.
Aurora on 12.9.
Papers from EME sessions. VHF Contest by
LZ5AE,
DM0Y, OL7M,
OK1KPA, Last update of
Contesting
rules. It seems, that IARU
R1 VHF Contest were held at last
nice weekend in year.
Spanish video
from VHF Contest. VHF Contest 2024 by
SQ2RAD,
F8KID,
OK1OPT, Memories
to our VHF contesting
in last 30 years:
1,
2,
3.
When you need SMD device. VHF Contest 2024
by
OK1KFH &
OK1KUO,
DA0FF,
9A0BB.
IARU contesting.
VHF Contest 2024 by
OK1HWU (OK7C),
OK1VPZ,
OK2KRT and voice record
SN7L.
Logaritmic detector. DF2ZC released new
2m
EME Newsletter,
SN7L on
Snowhill had strong wind.
Claimed results at Slovhf.net.
Last actual version of the
IARU R1
contests rules from last published VHF Handbook at
IARU.org web page. Just this weekend IARU R1 arrange large
EU
VHF Contest of 2024 year. Leave info about participation
here.
OK1VAM,
famous OK 3cm station
(QRV since 1959) passed away in the age of 88.
His CQ still rings in space.
OK1AR invites
to Strojetice When producers will
comprehend
CW_SSB transceiver need "smart
digital ALC"? It may help you.
More.
Compare: FT847
modification. Time to move
24-47GHz.
Help yourself.
More.
Towers. From our
EME community
passed away
Serge VE1KG. He will missed! International
evaluation of
July
C-test. We got a question related kW 70cm SSPA.
Let me
few words about popular
PA.
Maybe wait for a bit
new device.
First 70cm QSO
OK-CY9
achieved by OK1KIR.
Congrats! New gear->YAESU
FTX-1F. New ICOM
7760.
And even more:
SP9VFD,
W7TXT,
WC8RK.
Actual msg by DL7YC: first CW worldwide
47GHz EME QSO worked!
More Trenton
conference papers:
K1JT,
JH1KRC
1,2,3,
K0PRT,
I0NAA,
KB2SA,
KB7Q,
N0AKC,
N5BF
N7SS.
Next conference papers from Trenton: OK1DFC: 8m
offset
dish, N1AV: Microwave
EME KH6, WD5AGO:
LNA
Pics report OK1TEH: EME
conference Trenton, N.J. Papers related to
history of
EME
(OK1TEH):
1,2,3,4,5,6.
EA8DBM via EME will
be next days at 23cm in Corsica, then in IS0.
We shall be prepared at 23cm for 2025.
EME
NewsLetter for 70cm
&
up.
This weekend will be held next run of
ARRL EME Contest.
And
OK1DFC?
ČRK released prefinal
Czech (OK) results of VHF July Field day 2024. For large EU
evaluation we still wait. New
web page of
large hamradio market
in
DL.
Few pictures from SP6 VHF hamradio convention by OK1FQK. Info IP0A. -
check the QRV list
abt. real big array
from Sardegna.
EME from
Antarctis:
by
VK0DS.
T7/LY3UM. We held a small celebration of
24 anniversary
of informative VHF-UHF-SHF web operation
on
OK2KKW web.
Within the trip to
Alps
was
OK7SE focused
on Alpe-Adria & QRP Contest.
TEP were open
even in
August.
More. OK SHF contest we cut out, only OK1TEH
distributed points from the home shack. Czech results
are here. Alpe-Adria &
QRP contest
from
Klínovec, DL3IAS
info abt
use of Aurora.
Sunspots,
audio,
QSOs,
log preview.
Even till evening were Aurora! Try as well as
70MHz band!
GaN
Power Amplifier
Design
Solution by Qorvo. Today, 12.8. after 12h. UTC probably will
be Aurora. MS activity
of August meteoric showers.
Vivaldi antenna.
Report
of Robert OK1FEN from A-A VHF & OK QRP C-test.
Pics
OK1OPT from similar source.
A-A-C
OL2J.
Microwave and RF
detector w. Schottky diodes.
DL3IAS:
rain scatter at
10GHz only w.2mW. EME
LY3UM.
GaN 24GHz RF power
MMIC amplifier can deliver up to 10W. (tnx info DB6NT).
CT1DIZ/p MS trip at 2 and 4m. Simple variable adjustable
attenuators for SSPA drive.
How it
look by
professionals. 20W
GaN PA for 24GHz. Aurora 4.8 by:
OK1TEH,
DK8KX, UT9UR. 6.8 was
big
2m Es OK- F. FT8 CQ WW VHF Contest by
OK1KKI.
Alpe Adria VHF-C / QRP 24
by:
OK1TEH,
OK1KPA,
OK2VMC,
S59DEM,
S50C,
S59P. Perseids:
more info. Perseids arrived and helps to
create Es above
middle EU. Video VK3FS
focused to ionosphere.
More.
Device. ARRL
EME Contests change of rules.
2024 autumn parts of ARRL EME Contest.
LPF of 2m PA by
OK1UGA.
DL3IAS invitation into C-test. On 2.8. were
sporadics. For us, sad to say, to close.
Development in
GaN
area.
Calendar
of VHF C-tests DJ5AR Perseids peak would by on
12.8.
morning.
Consideration abt.
this year DXs. Sad info: well-known
F8ZW passed away at the age of 88. He was very active on VHF.
You wkd him sure. RIP! Leave your
announce about participation
in the Alpe-Adria, BBT & OK,OL QRP C-tests.
EA8DBM
GHz
EME. New two metres
DG7YBN antenna for IARU VHF Contest. How to connect 4
low noise
Yagi system.
OK1KKY.
ARI
Meteor scatter Contest. As well as for
50
and
70MHz bands. MMMonVHF
Meteorscatter sprint Contest.
Perseids on
the
way. Remember
to
use it. Some
related info.
More
here, here.
Even
here.
Try it
on
432MHz. However
NRAU is running
more contests
for hamradio. About DX-pedition to
Iceland.
Test μW
adventure. BALTIC OPEN
VUSHF Championship 2024: this Contest
will be held 17.8. 2024 15-21 UT,
@
2m, 70
& 23cm.
Invitation to 32-nd traditional
Radio Amateurs
meeting in Slovenia,
Murska Sobota. Logs
HG7F from July
VHF. This weekend you may josh by EME wifi
tricksters, who slowly occupied hamradio
band
5,76GHz.
More
here. Auroral condx not seeing,
CME cloud arrived in
opposite polarity.
KA6U is on trip & helps to EU with
WAS. ON7UN passed away. It's great sadness that
ON7UN is gone, Eddy wrote.
DF2ZC released new July
2m EME Newsletter.
YAESU suggests discout coupons for new
HF transceivers. Nifty
stabilizer. Results of spring part
ARI EME
Contest.
Lightnings hunter. Where to buy
starlocks for M2 fix? On 20.7 were 55 years since
first human crew landing on the Moon surface. Movie made
for such historic
event. July C-test story:
OK2A (OK2KKW).
Long two
metre antenna by DG7YBN for success in IARU
VHF Contest. When you are QRV on 70MHz,
remind this weekend to IARU
4m VHF CW-SSB Contest. Space project
Parisat.
Degradation
of EME communication
is a
combination of Moon distance
&
position on the Sky
vs.noise
sources. Claimed
results of Italian list of July 3rd.subregional IARU /
Field Day.
Pics from July FD 2024 by IK4HLQ.
Bavarian and
Saxonian VHF (up to μW) Mountains Day will be held parallel with
our Czech QRP & A-A C.
Give them
contest points.
Sad: remind to UHF devoted ham
OK1IBB from OK1KNF,
multiple
OK Master
at 70cm.
He passed away. RIP! July C-test story:
F0EGV,
F6CJP,
Meteorscatter Sprint Contest. Tantal hasn't
ESR better
than ceramic one. July C-test story:
OK1KKI,
OK1KMP, OK1KKY,
OK2VMC,
OK2KOJ,
OL2J,
DR2X+DL3IAS,
9A0BB
&
HA6W. July C-test story:
OK6M,
OK2PPK,
F6KFH,
IQ1KW. Updated several tables of our
club
->
results
&
awards. July C-test story:
OK1KPA,
OK1KUO,
OK1KFH, OK1KOB,
OM3KSI. Claimed NFD results sent to
RSGB web.
July C-test story:
OK2KRT, OL7M. OK
QRP
Contest 2024.
ALPE-ADRIA
VHF Contest. Leave your
announce. Tomorrow we
await lightning storms,
test the rainscatter QSO as well
on (for RS) unusual bands 23,
13
+ 9cm. On July 20 - 21. will be
held IARU
70MHz VHF CW-SSB Contest. Antenna
Average gain calculator.by KF2YN. Our beacon
OK0EP is stilll QRV
(already 43 years). Someone
still need it?
If yes,
send a spot sometimes. Claimed results from the July IARU Field
day here
+
here
&
as well
here.
Don't forget send a log till
Wednesday. Karel
OK1SQK is SK. RIP! We lost well known μW VKV
ham
PA1TK.
New
VE7BQH list
of the best antennas. PTFE coaxial cables of unusual impedance for
your home made SSPAs, splitters and couplers buy
here, Unsorted
pics from Friedrichhafen.
Finally we got something free. Some
directional coupler. Into
Contests results
table had add OK list of
May C-test based on
IARU R1 results. Why it's not as by
CRC?
Remind update of your position on the
VHF up Top
list. OK
results list of the June SHF Contest for final check. Do you
know it? Coax.splitter or combiner well known as "rat
race coupler". Remember
details?
Look here.
Have you at 23cm UTAH? Use the trip of
KB7Q into loc DN41av. Yesterday's
Es
reflections were just above us.
Next
Es. Where to buy
high Q capacitors for SSPA. Regional sales
here. Cubesat
MESAT1. Use
till we can.
Within Friedrichhafen
convention
was Aurora
then FT8 Es.
Az/El rotator controller by Pavel OK1DX
AVROT Spanish
Cubesat.
Lightning & storms
again?
NLC
clouds.
Connector of
"screened
banana
& socket"
isn't UHF.
EME
Contest.ru - already this weekend! Leave
your announce please for
July IARU Contest
&
OK
Field day. Shift of the VALVO
circulator from TV UHF band down to 70cm. Valvo circulators
production. As
well as
here. Cigar form antenna for lower GHz bands:
history,
development,
design, for
23cm,
13cm and
9cm.
S53VM web.
K2UYH passed away.
Let the Earth
be
light
for him.
OK1TEH will inform you, what about his
EME NewsLetter. QRSS:
nonrobotic replacement of FT8 - option for DXing?
-
and what on
2m with
use of FAI
condx - see
EI7GL. Politics of
digitalization demolish as well as ham radio contesting.
Canadian station wkd 70% of
FT8/4 QSOs.
Here is
OK2KKW and historically as well as
OK1KRA. It is our QTH,
where we transmit.
Story of Seifen. American "Holice" - Dayton Hamvention 2024:
video from
marketing
event of Icom. For us is
rather
close this.
Finální slovenské
výsledky květnového 2.s IARU. Aktuální přehled
bouřek na území EU.
EA8DBM
EME. European
results of the IARU May 2.subregional Contest 24 for final
check. Delayed
I1KFH data of June μWC. We received an invitation to traditional
SP6
VHF-SHF convention Zieleniec. It will be held on 16
to
18.8.2024. Would be some coincidence of
stratospheric
NLC clouds and
Sporadic Es
layer? More
here.
OK1KIR's
news.
Contest weekend
extension!
Beside our
Activity contest
will be held on Sunday
Alpe-Adria UHF-SHF Contest. On Saturday will begin analogue
(w/o FT8!)
IARU C-test at 50MHz band.
Es is ON, even QRP will work well :-). SSB at μW bands in OK:
16 part of OK1AIY tale +
historical
overview.
BY directional
coupler (23
+ 13cm).
Preliminary results list of the
IARU 2.subr. & May Contest
for final check. It
seems
we
won all of our 4 bands. OK1DFC
experiments
with EME at 47GHz.
Not successfull yet.
Hi PWR
13cm coupler by DD1US.
Long DX
Es 3230km.
Claimed points list of the June 2024 IARU Microwave contest in
OK.
Submitted change proposal of C-test rules.
Reports from the last IARU SHF weekend:
OK1KUO,
DK0NA,
OK2VMC, OK1OPT,
9A3AQ,
OK5P,
OK1ELE. Few weeks ago was
discussed
issue of the kW SSPA design due to real power at 70cm.
Compare
ART2K0FE.
Crazy
weather... Convention of 9A hamradio Psunj -
Saturday 8.June. LM399 -
reference of
voltage 10,0000V. After close of IARU SHF contest we were
surprized by long
Es.
More. Nice discovery:
7X2RO speaks Slovak. Due to upcoming
heavy rain in JO60JJ area this weekend OK2A team aren't going to
be QRV in June SHF:-( Czech
Meteo institute is quite sure, that this contests weekend will
be in OK very rainy.
Chinese 23cm
isolator. We received bad
news.
Our small OK-OM 3cm community lost
OM1GX, who passed away into space of DXs. Overview of FT8 QSOs
here.
Ferrite materials for
interference suppression. Compare reality and
CRC history.
Session of the persons interested in microwave issues on
29.5.
Es as usual?
Robotic FT8 QSOs as priority? The Nature
is some-how out of Es season time list.
Condx
ordinary
were
open
since 23.5.
70cm LNA w. SAW. First
Es opening in 2024 season were on 16.5. Check Es tomorrow or the
day after. Important
PA2DW info. After 8 years
this
meeting is almost forgotten but physics is still valid.
Ordinary SDR TRX would be good for HF.
What
new in Texas? 24/47GHz
project of W5LUA.
Video
from Kozákov thrift sale meeting and CB
impressions?
Contest report from the VHF+up IARU May Contest 2024 by
OK2A
(OK2KKW). The same C-test by
OK2KRT.
British,
German &
Slovak prefinal
results of the May VHF/UHF/SHF Contest
IARU 2024.
Be ready for
2m Es. OK1TEH sent his pics from 10.5.2024
Aurora as it was
visible on the North of Prague. DD1US:
coaxial cables. Within last decade of May we have in EU usually
start of 2m
Es
season. What abt. 2024? Good
opportunity, Nice summary of
Auroral weekend
by VE3EN. Simple
transverter SP6GZZ 10/2m. Is the
FT857 with "D"
better? DF2ZC released his new
2m EME
NewsLetter.
Aurora was visible even
after Midnight
from
SP1.
But all sleeps. 10 - 11.th May 2024
were
Aurora of decade.
Condx were open as well as on
70cm and even Southern to IS0. Final
results list of OK participants in the 2024 IARU March Contest.
OK1TEH
won
3x . EME
at 47GHz wave.
May contest
2024 by:
DR2X,
DL1EMY, DA0FF,
IQ1KW,
OL2J,
OL7C, OL7M,
OK1KUO,
OK1UFF + OK1OPT.
May
contest 2024
by:
ON4KHG,
DK0NA,
OK1KMP,
OK1KKY,
OK2PPK,
9A0BB,
DL6GCK,
S51ZO +
S57O. May C-test.OK1KPA.
Maybe tomorrow
but with
higher probability
on
Saturday
await
Aurora.
ADSB receiver. Small
"circlet"
antenna for 23cm by HB9SSH and DJ6EP.
TEP condx observed again. Test of
Haarp transmitter. Claimed list of the IARU May 2024 2.nd
subregional contest
OK,
OM,
DL, S5,
9A and
DL pics.
G4DBN dish. CRC only few
days before May VHF/UHF contest IARU
discussed changes in terms of OK VHF contests
rules. DXs
in the May Contest are as usual supported by
meteoritic shower /
Eta Aquarids. For sure
you will join
it.
International results list of the IARU
March Contest. OK1SPN from CB,
PMR, D-Star & FM
passed away, RIP!
QRV list for May VHF/UHF Contest.
Stavba Yagi antény. Microwave session Kozákov on 11.5.
OL3Z & 23cm.
Reminder only.
End of
MFJ. Maybe Au
late afternoon? GHz
EME CT1BYM. Unique TEP DX QSO
at 70cm! Spectrum
analyzer up to
20GHz.
1kW PA for
10GHz!
PA tranzistor up to
70cm.
New
license rules in UK. DG7YBN:
plastic
components for
antena design.
HF aerial for
40MHz.
3cm 60W PA unit.
Precision
voltage ref. Print out
the feed for
QO100 satellite. End of war
celebration.
Two years ago. Aged,but still
valid health
warning.
In December we
remind
Mr.
G.Marconi.
Now
he has 150.birthday.
But we shoudn't
forget as well as
A.S.Popov. Leave your announce about
planned participation in
the next May IARU 2.nd
subregional Contest.
TH7DXX.
OE1KDA wrote
(translated) article abt. simple HF aerials as well as few words
abt. V/UHF low bands antennas. Fix your bad taste from FT8 and join
23cm
SSB EME contest on May.10 before
DUBUS
EME contest 11-12.5.
Construction
of
EME station with big dish (part 1). And several
ideas by
WA6HTP.
Mostly "HF"
news by EI7GL. Web
page SQ1GU focused to
hamradio HW at VHF
& GHz bands.
Seasoning & tests
of tetrodes by OK1AMF. Some ham
radio meetings:
1,
2, 3,
4, 5,
6.
Spring trip
KA6U.
Cheap spectrum analyzer
LTDZ.
SPS by
Mornsun. The World
amateur radio day on 18.4. Jarda
OK2UYU passed
away. Who know him,
remind
that decent guy. New 144MHz EME
NewsLetter
DF2ZC. New EU web
of MeanWell PS producer.
Update
of digi Pluto up to 3cm. In remembrance of DL7APV:
presentation of his giant 70cm EME monster with
128 yagis. Even
maybe
Aurora? K2UYH
released EME newsletter for 70cm & up.
We lost good friend and excellent op
Bernd, DL7APV SK,
RIP... OK1DFC
wkd first
70cm QSO OK-A8OK, congrats. We add
QSL card
for 1st 9cm QSO OK-Philippines.
EME trip SZ5RDS to Rhodos cancelled - DH7FB has back "pain" ->
QSP
DF2ZC.
Dubus
EME Contest today. On Monday 14.4 has a birthday ( 97! )
guru of
OK VHF communication, Jindra
OK1VR.
Send him
your wish! Spain open new
HF band.
Belgium is retuning. In
OK temporary
no change. 144MHz QSO by
lightning scatter. How to manage
soldering of RF PWR transistors at heatsink of SSPA. Suggestion:
use
Pb48Sn32Bi.
63 years. Try EME, Condx
are still good. As well as TEP condx
are
open. Dual band GaN
30W PA chip
cover 9 and 3cm. FT897
isn't for CB:
update
+
set up
&
Service manual.
Web hamradio.sk is QRV already 25
years. Congrats!Easter contest results
list. Reports:
OK2PPK,
OK1KMP,
OK1KKY, Antenna
of
OM0MV/UB
beacon. Really?
Indeed next TEP
DX QSOs: A65BR - FR4OO (QRB 5162km) and SV2DCD - V51WW QRB 6613
km.
Lyrids MS shower is arriving.
Results of
the ARRL EME Contest 2023. I1KFH:
dual band feed by
OM6AA. SZ5RDS -
2m and 70cm
EME/MS ctivity DF2ZC
+ DH7FB on
Rhodos island (KM46CK) within 14 - 20.th.April.
Prefinal list of OK stations in March
IARU Contest for last check
here. Preliminary list of
IARU subregional
here. More about TEP
opening to EU has
written by EI7GL.
New
TEP beacon ZS6RVC. 4X/OM2IB
sent us info
ZS4TX.
Next
TEP DX
from EU
yesterday: 9H1TX, SV8PEX, 9H1PA
completed unique QSO w.V51WW
QRB > 6000km. 144MHz
TEP DX QSO Greece - Namibia. Nice
BPF. March VHF Contest
DH3GD.
VK3FS
& his
microwaves.
Actual last known version
of the
IARU
VHF Handbook. Overview -> meteoritic
showers for MS traffic in
April 24.
20W PA
for 13cm by SG labs. Blog OK1EM
->
view in to history.
VK0DS and
his target: antarctic
EME activity.
Don't forget to wish Happy Easter to all and join on Sunday
OK Easter Contest!
2m22CROSSDX - EME Yagi. Curiosity:
just a week after Easter Monday -> on
April 8th.
2024 will be in USA
visible total
eclipse of Sun. Results of the
Winter QRP contest. This
video of
the I4MEY team
were recorded during March OK
Activity test. IF
transceiver Anan - G2 with 16 bit. A/D converter in the RX way
maybe would be suitable even for 144MHz.
Converter for HF
to your two metre transceiver. DD1US
amplifier ->
40W at 2,4GHz. 150W
surplus PA
13cm. Maybe
this article
would be helpful at least for someone. TV reception in the
Valley of baffleds
-> tech. history. Did u read VHF contests
reports of
SN7L from IARU VHF Contests
2021,
2022 a
2023? Google AI
translation. Late tonight or tomorrow 25.3, you can
await quite strong Auroral
phenomena. Overview of
coax.cables data. Video
records of G4CCH, focused to EME traffic.
Did you seen
VK3OU web?
ON5GS:
SSB EME
with HB9Q. New first
QSO abroad ->
OK1KIR - LZ4OC at
24GHz. Congrats!
9cm EME
Dubus Contest
report by VE6BGT.
Detailed description of the
10GHz feed for circular polarization in EME.
Coaxial relay for higher
PWR on 3cm. March subregional IARU VHF+ Contest by
DK0NA.
DD1US ->
25W PA for 13cm with MRF21045 transistor.
For download is available a new version of the V/U/SHF
Contest log SW VUSC version
7.06. N1V on EME
agn. Unique 23cm QSO
VK7MO we already
reported.
EI7GL
that QSO
described in details. 4W driver
for 13cm. Mostly HF Czech publications with
hamradio matter for download
from
OK5NW web. Abt.MS
propag. by R&S.
Do you
remember? A bit abt.
EME by R&S.
What is
WIFI 6E? Why
we lost 6cm -> due to silence of CRC?
1.subr.2024
by
OK2C,
OM3KTR.
First 10GHz:
OK
-
Hawaii
(OK1KIR
- N1V) Congrats!
9cm
Dubus EME Contest. March 2024 issue of the
2m EME
Newsletter, Remind
Aurora
13.3.89? Here is
blackout analysis in Canada. News from the Netherlands: March
23cm
contest by PA0EHG.
PE1RKI produces single 145MHz
cavity filter. VHF
commitee of IARU R1
&
OM3BH
suggestions? After 43 years of QRV our
OK0EP is "in the
band" agn? 1.subr.2024 IARU
by:IK4HLQ,
OL7C,
Abt."Line
of sight"
&
VHF
propagation.
Newsletter
IARU,
welcome
OM3BH. 1.subr. 2024.
IARU by:
OL7M,
OK2PPK,
OK2PVX,
OK6M,
ON4KHG,
OR6T,
F6KFH,
HA8V,
I1KFH,
DL3IAS. Standa, OK1MS
had birthday, we
wish him good health.
23cm new DX record of
VK7MO
via Lightning Scatter. Few ideas how to use
portable trailer.
Transverters of
SQ9MTS. EI7GL released his VHF
Newsletter. Check it. OZ9ARR works on the new
EME antenna. Did you prepare similar? BPF
filter for cut off out of band QRM. 1.subr. IARU by:
OK1KKY,
IQ1KW,
S51ZO+S59P.
Well known F6BEG
passed away,
RIP! Aurora
3.3
OK1TEH.
1.subr.
IARU by:
OK1JFH, OK1KPA,
OL2J, F8KID.
Claimed score from:
9A, S5,
OK, OM,
PA,
G & by IARU.
Already today at 19h. will be held 2m part
of NAC,
SP-UKF AC &
IAC. Invitation to visit Danish
V-UHF news. 1st. subregional contest is over.
Aurora
trembled by
HAARP?. Pavel OK1AIY sent
next part abt. μW history. CAUTION! change of
time frame for logs delivery of V/UHF
Contests IARU (incl.Subregionals,μW-C).
More here.
Low noise frontend of the receiver input for
13cm by DD1US. Don't forget
send an announce
for
1.subr. contest. Another HF
transceiver XIEGU
X6200.
Several data like phase noise are not known yet.
But FT8 will be sure.
BPF for 47GHz, developed for cut off of the mirror frequency
products. VHF oscillator with very
low phase noise. During 1st. IARU subregional contest will be
running
ionosphere heating test by experimental
HAARP TX.
Check
Es.
DL3IAS ->
report from Winter BBT. February
QRP-C 2020 by OK1FEN. Winter QRP
by
OK1TDO.
Dual
mode horn OE2IGL. It came from IARU:
here,
here,
here
&
here. DD1US's
LNA with Miteq 121643-15-17
. HS60RAST
is QRV. Calendar of SP VHF/UHF
contests
here. Until now
this
record has
broken
by G4KUX
only. SW by
W3SZ. New microwave components
by Kuhne. BTW as well as
1W PA for 47GHz band. VHF/UHF
parts by YU7CF. Not only
antenna construction
by
RW1AW.
L.B.Cebik look
at
antenna by a bit different
way.
SSB envelope control. OK1XFJ
SK RIP!
He had
67 y. only.. Omnidirectional horizontally
polarized
antennas.
Part 2,
part 3,
part 4,
part 5
+6. K2UYH
sent us again newsEME
NewsLetter for UHF and SHF
bands. Parabolic
dish simple calc
for basic parameters.
S-parameters and how to take it.
10GHz LNA by satellite LNB. Ladder
SSB X-tal filter: design &
construction. It's
running now. EME antenna
WB9UWA
-> look at it.
Transverter
suggestion for 23cm: be
able
move
up and tune up to [at
least]
1300MHz freq. Measure of LNA
with Miteq chip
AMF5S-040080-12-13P amplifier for GHz
"mid-bands".
Web
VHFDX.ru is ON
again. LNA with MMIC
SPF5189Z -> article by DD1US. This
video
confirming again, that banana plug
PL259 is not an UHF.
Delete
of hamradio operation
in 23cm band is still issue for spectral
authority negotiations. VHF Contest's
video
IZ0CLS. From:
Michigan V/UHF
Society,
UTAH
VHF Society,
Texas:
retune of circulator. Maybe we missed
Aurora.
International evaluation of the VHF
Marconi memorial CW Contest in fact completed our Contest
Season 2023.
UHF antenna with isolated elements -
construction details.
Set up Youtube for your home language.
HS60RAST.
For download is now a list with the international results of
2023 VHF
Contest evaluated by IARU. From the
same table
you can seen as well as last year
UHF-SHF Contest IARU and many other C-tests
lists.
Use
Sun Noise Measure to Evaluate EME System Performance. Actual
calendar of
Italian national contests. From
I4CIV blog:
connection of two 25Ω
antennas into 50Ω feeder.
Construction
and VHF
Contest IZ0CLS. Simple home made
filter against TV
interference from 2m transmitter. Precise UHF antenna
elements lengths. DF2ZC released new 2m
EME
NewsLetter. TEP
DX-pedition Aruba.
VK3FS believes
that microwaves are easy.
Maybe interesting for
someone: Slovak PC logger ->
VHF
Contest log OM3CPW. Panadapter for
IC9700
gear. SMA
antenna relay up to 50GHz. Another coax.
relays. 20W
2m driver.
Calendar of Moon events by DL7APV! CRC released
OK results of MMC2023. On the web archive sheet OK2KKW are
available in our usual
format. The
contest results archive sheet has updated by EU UHF contest 1960
winners. Waiting for EU
results 2023. VE7BQH propose again
outline of the best
hamradio antenna designs from the perspective of noise level. W1GHZ
send article abt.
Cassegrain subreflector.
Adds articles for study
here,
here. μW
soldering of 122GHz. OK1TEH wkd via tropo
RA3LBW
QRB
abt.1296km. On the
N5PA VHF web you can find many interesting
links. Tiny SA
ultra Spectrum
analyzer up to 6GHz.
How to bend
semirigid cables. G4FON web for CW
training. Tomorrow, on 28.& 29.1 would
be awaited
improved tropo condx up to
N
& NE. Try to look
there.
Less than..
Mirek
OK1DOM invite you to the
Winter QRP Contest ČAV
held on Sunday 04.02.24!
Our First
abroad list-> 23cm QSO OK-
FO0 (Clipperton
island) has assigned to OK1DFC. I hope it enjoy him. Tnx 4 info.
VK0DS.
From the Archive:
old 70cm aerials although
out of date
still works very well.
Couple of
asuggestions to PWR SSPA projects. Beginners projects
from
NTMS U.S.
society:
A,
B,
C,
D. And a bit more sophisticated matter:
how to solder small SMD devices.
Time of 23cm
changes
is here. However we shall wait for EC decision,
particularly if they will confirm
ITU negotiation results. Offset
10GHz
EME dish calc.by
KA1GT.
Do you know
inductance of
such coil? EME ops. are
moving by 2 MHz. When you will do at 23, or at 13cm bands final
contest ODX w.I1KFH,
remind they use
OM6AA loop feed. Today is a significant day. Just 50.years ago
the Nature prepares special
game which
changed
V/UHF
DXing.
Translation
of one
article maybe
can help you to set a
power attenuators for UHF+
frequency bands at home. OK1VAO
released prefinal OK results of the Marconi Memorial Contest
2023 for final check.
Chinese
battery. Precise RF
Wattmeters. KA6U trip ->2m
EME DX from EM62 & EM72.
Will be the NAC
area for
FT8 mildew?
Results
of the RU EME Contest from
last year + calendar for 2024. Noise
source &
noise measurement basics.
Yearly rent fee and electricity for operation of
OK0EP beacon has
paid today. Beacon is QRV already 42 years.
DM2AFN
SK. RIP! Update your score of hamradio DX results in
OK1VEI's
OK
toplist. Russian
tube for 70cm. What would be good to know about LNA check
here. And G4DDK
paper
about LNA power limits. Even
our test were accepted. Nostalgy whiff from time when our hobby was still OK -
YU UHF/SHF Bulletins - do you find there your callsign?
SP society SP
UKF
awake and returns
back to
organize
+ evaluate
of VHF-SHF contests.
Join
SP UKF C-test.
January
144MHz EME
NewsLetter DF2ZC. 2m
LNA.
GEMINI PAs for
VHF & up bands. IC705
USB connector.
Into
VHF contests
archive has been added Result list of
OK stations in the IARU UHF/SHF Contest 2023. Join. CRC (OK1VAO)
released final Czech results of the IARU UHF-SHF Contest 2023 by CRC
evaluation. See
here. IARU shaping the Future?
If yes, why doesn't mention contests & GHz
bands? They doesn't take it into plan?
Programmable USB
generator up to 30GHz with output 1/2 W. Beside MS Quadrantids
check 2m EME condx. Any
hamradio operator should know, how to do it.
1,
2,
3. New
70cm and above EME
NewsLetter for Dec.2023. DU3T send us nice
presentation about his 9cm EME effort in December, when he made
first QSO DU - OK. 65th.edition
of
Contest Romagna CW,SSB. 144MHz
part will be held
already on Jan.7
2024 from 9 to
14h.UT. Did
you sometimes consider about
future of ham radiocommunication?
On 4th. January morning is predicted
peak of
Qadrantids meteoritic shower. Join
any nice MS DX QSO! Try Handy
spectrum
analyzer with option up to 6 GHz. Suitable 70cm aerials by
Antennas-Amplifiers Thanks to
OK1VR (96)
for new years wish email! Welcome in 2024. Let
me wish you all good, rock solid health, joy and sunshine by OK2KKW
Radioclub. This year the life will be not easy, but I believe we
will surpass all and will meet after such exertion in peace.
Our Sun celebrated start of new year by
firework before midnight. ČTÚ (Czech radiocom.regulator) reminds
us that the
Measure of a General Nature informs about the preparation of a
document defining measures for the protection of the satellite
radionavigation service from amateur
operation in the band 23cm & ECC
Radiocommunication Committee of EU wkd on decision include
report on that matter.
Our
2023 news here. |
|
QRV LIST
for
March 2025 IARU
Reg
I.
VHF-UHF-SHF Subregional Contest
Beacons QRB Maps (1)
(2) (3) (4) Profile
Actual EME condx - by
MMMonVHF
Present MS condx - by
MMMonVHF
Sporadic
E web
ES-map
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