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,
RIP.. OK1DFC
established 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
and
Service manual.
Web hamradio.sk is QRV already 25
years. Congrats! Prefinal results
list >
Easter contest. 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 band. 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 record of
VK7MO
via Lightning Scatter, congrats!
Few ideas how to use
portable trailer.
Transverters of
SQ9MTS. EI7GL released his VHF
Newsletter. 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 and 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 abt
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. Within 1st. IARU subregional contest will be
running
ionosphere heating by experimental
HAARP TX.
Check
Es.
DL3IAS -
report from Winter BBT. Feb.
QRP-C 2020 OK1FEN. Winter QRP:
OK1TDO.
Dual
mode horn OE2IGL. It came from IARU:
here,
here,
here
&
here. DD1US's
LNA with Miteq 121643-15-17
1v0. HS60RAST
is QRV. Calendar of Polish 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 a bit different.
SSB envelope control. OK1XFJ
SK RIP!
He had
67 y.only..Omnidirectional horizont.
polarized
antenna.
part 2,
part 3,
part 4,
part 5
+6. K2UYH
sent us new
EME
NewsLetter for UHF & SHF
bands. Parabolic
dish simple calc
for basic parameters.
S-parameters and how to take it.
10GHz LNA from satellite LNB. Ladder
SSB X-tal filter: design &
construction. It's
running now. EME antenna
WB9UWA pics.
On 23cm is suggested to have an
ability
move up to
1300MHz. Measure of LNA
with Miteq
AMF5S-040080-12-13P amplifier for GHz
"mid-bands".
Web
VHFDX.ru is ON
again. LNA w. MMIC
SPF5189Z article by DD1US. This
video
confirming again, that banana plug
PL259 is not an UHF. Total termination
of hamradio traffic
in 23cm band is still issue for negotiations. VHF Contest's
video
IZ0CLS. From:
Michigan V/UHF
Society,
UTAH
VHF Society,
Texas:
retune of circulator. And 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.
Adjust Youtube for your language. EME
HS60RAST.
For download is now a list with the international results of
2023 VHF
Contest evaluated by IARU C5 rules. From the
same table
you can seen as well as last year
UHF-SHF Contest IARU and many other contests results.
Using
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 on Sunday
04.02.24. More at https://ok5cav.cz/
GL! First 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 well.
Many advices to PWR SSPA projects. Beginners projects by
NTMS:
A,
B,
C,
D. And a bit more complicated matter:
how to solder small SMD devices.
Time of 23cm
retune
is here. However we shall wait for EC decision, if they will confirm
ITU negotiation results. Offset
10GHz
EME dish calc.by
KA1GT.
Do you know
inductance of
this
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.
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
IARU - MAY 2024 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
Live MUF
EME CONDX by EA6VQ |
Date |
APRIL 2024 |
06
- 07 |
Very Good |
13
- 14 |
Poor |
20
- 21 |
Moderate
-> Poor |
27 - 28 |
Very poor |
|
|
An older news from previous years -
please click here:
2023,
2022,
2021,
2020, 19,
18, 17,
16, 15, 14,
13,
12,
11, 10,
09,
08,
07,
06,
05,
2004, 2003,
2002, 2001
& 2000
|