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yb0ibm @ G8CYK -
2017-09-25T16-00-38Z_14247.0kHz
yb0ibm @ G8CYK -
2017-04-02T15-30-53Z_14237.0kHz
yb0ibm @ G8CYK -
2017-04-05T19-06-32Z_14238.0kHz
Mayhem in Jakarta - April 5th 2017
yb0ibm-
FIRDAUS (daud) BACHMID - great name - was
also piled up on 20m, under an impossible heap of shouty south Europeans
- but only after a thorough ragchew with A41NN (Oman) during a
fabulous opening to the middle and far East
The excellent
VOACAP Online shows the specific route forecast
conditions.... this contact is just about predicted
September 25th 2017: another sked does the
trick
Well, we eventually
got the the deed done! Against all predications (the VOA chart)
conditions to Jakarta were very good - and Daud kindly agreed to a sked.
And then found
out about his serious local QRN problem. Living in downtown
Jakarta is a big challenge to deal with the man-made noise.
Having now seen the recording of noise, I can
appreciate why so many people arrive at a yb0ibm pile up and
shout their tonsils off - but can't get heard.
If you want to work exotic DX like yb0ibm more
easily- so you don't have to overcome the local noise level as
well as teh suual hazards and challenges of pileups, then help
us research how to track and deal with the rogue noise sources -
which in many cases are nothing more than a small plug-top phone
charger with failed suppression.
Increasingly in all locations, solar power
inverter schemes are notorious noise generators - but as long as
the source can be tracked down and identified, it can be cured .
...
... despite VOA's
pessimism, band conditions were good for once, 20m was wide open to Indonesia
... ...
CYK Diary:
yb0ibm's urban jungle noise menace
Unless you live in a
lead-lined screened room, you will be aware of the growing noise
from all manner of electronic and radio devices. Daud does not
live in such a place, and this is the view from the mast
location in Downtown Jakarta. Got the picture?
You may now realise why although there are
frequently BIG signals from this famous bellwether of the
HF bands, you will need to blast through s9+ noise to get heard.
It sounds like the familiar poorly suppressed
SMP noise that the UK is growing all too familiar with. Mains
electricity in Indonesia is 230 Volts, 50Hz... so no surprise
the noise period is 10mSec...
The filename (top left of frame)
contains the band/rig/date/time info...
DX Diary April
2nd 2017 : rag chewing with A41NN at 7000 miles
I didn't believe how big the signals were at
first. But this was another of the recent openings to the Far
East that reminds us that HF is unpredictable.
Unusually for 20m, PD9Z is perfectly
audible and there is even a point at 11:15 where he drops
the power to ten watts and you can barely tell the difference.
At 14:35 listen to iw9ckg being loud and
annoying and completely failing to get heard in Jakarta - but he
was certainly heard this end. oe6nkg was not heard here .
DX Diary April
4th 2017 : working the crowd at 7000 miles
Wow. A mammoth pile up taking advantage of freak
conditions. Even stronger at times than on the 2nd.
All 42 minutes 51 seconds from first heard to
fade out. Many of the calling stations can also be heard. UK
stations did well in this bunfight. G1DRW, G7GPH, G4SKO, G3TPL
to name but a few.
M6MVW (Hockley - a local) with just 10W got 5/9!
(I think I may have to pop over with a watt meter.)
It is a little frustrating for those waiting in
the crowd to hear stations that get through reciting information
already included in QRZ.com - especially when Daud says "hi,
Flavio" (having instantly looked it up) ...and then
Flavio ponderously and tediously spells his name out,
letter-by-letter....