Friday, May 29, 2009

Qsl card from Wenzhou, China



Thanks Mr Gao for the nice qsl card. Hopefully we will worked again someday. 73

10 Meter Monoband Antenna Comparison

10 Meter Monoband Antenna Comparison
(Modeling specs at 1 wavelength above real high accuracy ground with NEC2.)

Delta Loop Model
(Delta X-Ray 10 Meter DX10M01B)

3 Element Yagi Model
(ARRL Ant. book pg. 18-7 NBS rescaled to 10 meters)

2 Element Quad Model
(With 3/4 in. fiberglass spreaders, 8 ft. boom and no. 14 wire)

Delta Loop

Yagi

Quad

Primary Vertical Lobe Data

Gain (dBi)

12.89

14.39

12.67

Take off Angle (Degrees)

12

14

14

Beam Width (Degrees)

12.9

13.9

14.1

Secondary Vertical Lobe Data

Gain (dBi)

10.32

9.97

8.93

Take off Angle (Degrees)

40

42

44

Beam Width (Degrees)

16

18

20

Primary Azimuth Lobe Data

F / B Ratio (dB)

20.63

11.71

9.48

F / S Ratio (dB)

14.91

11.71

9.48

Beam Width (Degrees)

70

57.2

71.5

Physical Specifications

Weight (lbs)

9

13.8

16

Boom Length (ft)

3.5

14

8

Turning Radius (ft)

7.29

10.83

5.75

Effective Area (sq ft)

1.8

2.5

3.3

Effective Moments (ft-lbs)

66

149

117

Best Choice

Delta Loop

2nd Choice

Yagi

3rd Choice

Quad


Wednesday, May 27, 2009

Sunday, May 24, 2009

Qsl from Guangdong, China





Thanks Mr Vange, It is very nice eqsl card. I'm very glad to worked with u. Hope to work you on the bands again! 73 and Gud DX......

Saturday, May 23, 2009

Wednesday, May 20, 2009

10 meter band dxing report

Today QSO :

Date : 20 May 2009
Antenna : 2 element Yagi
Wx : Cloudy
Temp : 28 C
Solar Flux : 72

JA5SRJ : QTH : Kochi, JAPAN : 28490 mhz usb : RST 59 : UTC 0945
BG7APC : QTH : Hunan, CHINA : 28490 mhz usb : RST 59 : UTC 1001
HZ1PS : QTH : Jeddah, Arab Saudi : 28490 mhz usb : RST 59 : UTC 1159

Thanks for qso to all stations, will meet again on the someday
see u down the log ! 73

Monday, May 18, 2009

Eqsl card from East Malaysia, Sabah

Ini adalah eqsl kad yang baru diterima dari rakan kita di Sabah. Terima kasih kerana sudi menghantar qsl kad ini kepada saya. diharap kita akan bertemu lagi di udara mahupun di daratan kelak. 73

Friday, May 15, 2009

Qsl card from Sabah, Malaysia

Terima kasih bang Bob, Moga ketemu lagi di udara mahupun di daratan! 73

Qsl card from Hyogo, Japan






Thanks to Mr Yoshida for sending me your qsl card. It is very nice qsl card. Will meet u again on the air someday! 73.

Wednesday, May 13, 2009

Qsl card from Japan

Hari ini saya telah terima satu lagi QSL kad. Kali ini datangnya dari negera matahari terbit iaitu Jepun. Dalam beberapa minggu yang lepas propogasi membuka dari arah timur membawa ke Asia Tenggara, jadi banyaklah contact yang dapat dilakukan sempena propogasi ini. berikut butirannya.

JA5SRJ
UTC : 0932
YOSHIHIRO SAWADA
453 HEIWA HARUNO
KOCHI CITY 781-0312
JAPAN

ANTENNA : YAGI 2 ELEMENT
FREQUENCY : 28.495 MHZ USB
RST : 59



Sunday, May 10, 2009

Propogation Report

Propagation Report from Hannes Coetzee, ZS6BZP
10 May, 2009

Hannes Coetzee, ZS6BZP, reports that the expected solar activity will be very low. The geomagnetic field is expected to be predominantly at quiet levels. The expected Effective Sun Spot number for the coming week will be less than 5.
Currently the surface of the sun is blank, and there are no sunspots. We are indeed experiencing a very deep minimum. The sun's failure to produce sunspots is playing havoc with some frequency prediction programs that use stored sunspot values and, of course, with our HF communications as well. The frequency prediction programs tend to give optimistic results and must be treated with caution.
The imminent change of season with less energy from the sun reaching the southern ionosphere is having an impact on propagation as well. 15, 17 and 20 m will provide best opportunities for DX. Conditions to the east and the west will be good from the early afternoon onwards.
During the late afternoon and early evenings it will be good towards the north. The northeasterly, northwesterly, southeasterly and southwesterly paths will be challenging.
Long path propagation towards the USA is also possible. 10 MHz is looking promising late afternoon and after dark for the CW and digital enthusiasts. Local conditions are going to be good on 40 m during the day time. 80 m may perform well during the early mornings and late afternoons over the shorter distances, e.g. between ZS5 and ZS6. 30 m may perform well during the middle of the day between ZS6 and ZS1.
With winter on its way, 20 m is preparing for hibernation but may still give surprising results up to lunchtime. 80 m is the frequency of choice in the evenings. Unfortunately, the static noise levels are still a bit high, making contacts over the longer distances a bit challenging.
Remember that this is only a prediction and that HF has the capability to pleasantly surprise you - but you will never know unless you switch your rig on, listen and also call CQ.
Please visit www.spaceweather.co.za for further information.
South African Radio League
• All propagation reports can be found at:
http://www.southgatearc.org/propagation

Wednesday, May 6, 2009

Contacting a DX station

Making a call to a DX station requires a little more attention to the clarity of your speech and sending than making a call to a nearby ham. Your signal likely has the same qualities as the DX station, hollow or fluttery and weak, so speak and send extra carefully. Give the DX station call sign using same phonetics they using and then repeat yours at least twice, using standard phonetics. On morse code contacts, send the DX station call sign once and your call sign two or three times at a speed matching that of the DX station.

Dx contacts, except when signals are quite strong, tend to be shorter than contacts with nearby stations. When signals are very weak or station very rare, a contact may consist of nothing more than a confirmation that you each have a call signs correct and a signal report. To confirm contact, both you and the DX station must get each others call sign correct. To do that, use standard phonetics, speak clearly, and enunciate each word. New hams often don’t realize that multiple hops and skips around the world have a pretty dramatic effect on speech intelligibility, none of it for the better. Speak relatively slowly, don’t slur your words or mumble, and keep your transmissions short.


Ward Silver, N0AX

Monday, May 4, 2009

My 10 Meter Band Report (4 May 2009)

Today 10 meter band open nicely. Many station from Japan, China and Thailand are heard and their signal is very very strong!!! I dont know why this happen because according to the Solar Flux, nothing can do today, 69 and 00 ssn!!! and this is my qso:

1) JA2DYI - 28495 usb - 0838 utc - 57 sig - QTH Tokyo, Japan
2) 8J1ITU - 28490 usb - 0711 utc - 59 sig - QTH Tokyo, Japan
3) HS0ZIN - 28500 usb - 0823 utc - 59 sig - QTH Pattaya, Thailand
4) JA2NVM - 28495 usb - 0838 utc - 57 sig - Aichi, Japan

qso video:

9w2zak qso 8J1ITU
9w2zak qso HS0ZIN
9w2zak qso JA2NVM


THANKS AND VERY 73!

Sunday, May 3, 2009

Today 10 meter band report

hari ini boleh dikatakan propogasi 10 meter membuka walaupun data yang ditunjukkan sebaliknya, iaitu solar flux dalam 68. tapi ingat...itu hanya teori sahaja kerana kalau bacaan 68 ianya langsung tiada pemancaran yang boleh dilakukan ataupun tidak berguna. tapi saya tetap memantau di 10 meter dan ini hasilnya.

JA2DYI
Mikio Hattori
63 inomoto Mizuho
Nagoya City
467-0057
Japan

Fre : 28480 mhz usb
RST : 59
UTC : 0840 utc
Antenna : homebrew yagi 2 element

JA2DYI 9w2ZAK QSO Video

BA7IO juga kedengaran membuat Dxing di 28.490mhz usb, dan saya juga contact dengannya...menakjubkan...... pancarannya 59 begitu baik sekali...tapi video qso terlupa nak shoot....tapi ambil video masa dia dxing...baru teringat....

video dxing BA7IO dari China

Saturday, May 2, 2009

QSL card yang telah diterima

ini adalah qsl kad dari orang perlis, bang Hairil...rasanya yang ini adalah qsl kad yang last kot sebab dia dah lulus cw test...hehehe.....takpa nanti dapat yang versi 9m2 plak kot...hehe

yang ini pula dari Mr Chai Nanmai, Bangkok, Thailand

ini adalah qsl kad dari John M King, Phuket Island, Thailand

eqsl card yang diterima

ini adalah eqsl yang diterima dari rakan ham kita dari Jepun, butiran seperti berikut:

JG3MBL
Yoshida Masami
5-6-6 Kitabefu, Nishi-Ku
Kobe, 651-2117
Japan

Date : 24 april 2009
Fre : 28.490mhz usb
UTC : 933
RST : 45
Antenna : Delta Loop




Ini adalah eqsl kad yang saya terima daripada rakan ham kita dari Madras, India. Saya telah berQSO dengannya seperti laporan berikut:

VU2GMN
Gopal Madhavan
128 (old 63) Greenways Road
Madras 600 028
India

Date : 20 april 2009
Fre : 28.500mhz usb
UTC : 1314
RST : 59
Antenna : Homebrew Yagi 2 element monoband


cuba perhatikan perbezaan prestasi antenna yagi 2 element dengan delta loop, ternyata antenna yagi 2 element prestasinya lebih hebat dari delta loop, dan sekarang jika saya DX, saya akan gunakan Yagi 2 element homebrew. hehe....

Friday, May 1, 2009

Nighttime Dx-ing

From 30 meter down in frequency are the nighttime bands of 30, 40, 60, 80, and 160 meters, known as the Low Bands. These bands are throttled during the daytime hours by absorption in the lower layers of the ionosphere. After the sun begins to set, these bands start to come alive. First, 30, 40, and 60 meters may open in late afternoon and stay open somewhat after sunrise. 80 and 160 meters, however, make fairly rapid transitions around dawn and dusk. Signals between stations operating on 80 and 160 meters often exhibit a short ( 15 to 30 minute ) peak signal strength when the easternmost stations are close to sunrise. This is known as the dawn enhancement. This time is good for stations with modest equipment to be on the air and take advantage of the stronger signals on these more difficult DX bands.

160 meters is known as Top Band because it has the longest wavelength of any current amateur band. This long wavelength requires larger antennas. Add in more atmosphere noise than at higher frequencies and you have a challenging situation. That is why some of the most experienced Dxers love Top Band Dxing. Imagine trying to receive a 1 kilowatt broadcast station halfway around the world. That is what the Top Band Dxer is after! As difficult as this task sounds, many of the top Dxers have managed it.


by Ward Silver, N0AX


Good Luck For Your Dxing!!!

10 meter dxing report...

Hari ini selepas seharian memantau di frequensi 28.490 mhz usb, tidak ada apa-apa hasil, setelah puas mencuba ataupun GO BLIND akhirnya dapat jugak satu stesen dari China, berikut laporannya...

Callsign : BA7IO
Handle operator : Vange Yang
QTH : Guangdong, China
RST : 55 QSB
Antenna : 2 element yagi
Time : 1144 utc

hari ini propogasi agak teruk juga, jikalau mengikut laporan dari Solar Terrestrial Data, bacaan solar flux hanya sekitar 69, dan jikalau mengikut teori ianya sia sia sahaja jika memancar. tetapi itu hanya teori, dapat jugak satu stesen. tetapi penerimaannya agak kurang, sekitar 5/5 berserta qrm.

9m2mdx Great Dxer From Alor Gajah, Melaka

9m2mdx Nazmi adalah satu lagi tanda panggilan yang tidak asing lagi dalam dunia radio amatur. Khususnya dalam aktiviti radio contest. ...