The Malaysian Amateur Radio Examination result is out, congratulation to those who passed the examination. You can view the result directly from MCMC (SKMM) website or download it from the local mirror.
RAE 2008-1 result (local mirror)
I took some time off to build my first HF antenna using the plan I’ve obtained few months ago. I chose moxon as my first 10 meter HF antenna as it is small and compact and it is directional, allowing me to focus it into a single direction for a pretty quiet QSO, without much interference.
The material I used in building this moxon are :
Antenna Plan and Results
I use the plan described in this post; 10 Meter Band Compact Directonal Antenna and started building it immediately. The result of the antenna can be seen here :
Although I build it only as a temporary antenna (thus its flimsy), it performed rather well when compared to other types of popular 10 meter band antenna in my place (Delta Loop, Inverted-V) as the antenna is directional and it does not requires the use of transformer balun.
I’ve managed to make contact with 12 stations in 6 days since it has been erected.
Some tips working on 10 meter band
That’s it and good luck!
I wouldn’t recommend PVC pipes if you are planning to erect a permanent antenna as they are flimsy. Use aluminium pipes or copper tubes as they are more durable and offers best performance.
Good luck for those who will be taking Radio Amateur Examination (RAE 2008-1) tomorrow. Hopefully we are going to hear the voices of new hams on our airwaves soon.
Since 10 meter activities gained popularity lately in Malaysia, I decided to publish 10 meter calling frequency for the benefits of local hams in my region :
28.480 MHz USB
28.485 MHz USB
28.490 MHz USB
28.495 MHz USB
28.500 MHZ USB
Most local and DX activities concentrated on these frequencies with 28.490 MHz being the most popular for calling DX stations.
Tips for newbies hams on HF
Be sure to ask if the intended frequency is unoccupied by asking (“is this frequency in use ?”) at least three times. Then proceed to make a general call, “CQ CQ CQ this is 9W2QSO 9W2QSO 9W2QSO calling CQ CQ CQ, this is 9W2QSO calling any station and standing by” and listen for any call for few moments.
In Malaysia, the best time for 10 meter USB operation is around 4:20pm – 10pm, your milleage may vary though.
I’ve been searching for information regarding the radiation angle and the gain of slim jim antenna, but found none of it. So I decided to build the model of the antenna inside the ever useful MMANA-GAL software to get the information I needed myself.
From what I can surmise, the slim jim has a slightly lower radiation angle than vertical dipole antenna and is easier to mount, thus it is suitable to use for point-to-point communication VHF-UHF operation. It has a gain of about 2.8dBi-3.2dBi in free space and 4.8-5.8dBi when mounted at about 30feet from the ground. Here’s the result of MMANA-GAL :
Here’s another 11 meter Moxon Antenna plan suitable for 27MHz CB, Freeband and lower 28MHz Amateur Radio operation band.
A- 392.09 cm (154 3/8 inch)
B- 58.62 cm (23 1/16 inch)
C- 11.25 cm (4 7/16 inch)
D- 73.4 cm (28 7/8 inch)
E- 143.27 cm (56 7/16)
Gain, Radiation Pattern (mounted at approx 30feet)
Gain : Approx 10-11dBi (30 feet above the ground)
Freq range : 27.300 MHz – 28.300 MHz
The main advantage of Moxon rectangle antenna are :
Refer here for 10 meter Moxon Antenna Plan for Amateur Radio operation (28.2MHz-28.8MHz) : 10 Meter Band Compact directional antenna, Moxon
Eager to practice your CW skills but you have nobody to practice with? In some countries like Malaysia, CW knowledge and proficiency is still required to operated HF portion (except 10 meter) of the Amateur Radio band.
Having said that, I’d like to present CWirc, an XChat irc client plugin which enables you to send and receive morse code through IRC. Developed by a fellow ham F8EJF, CWIrc has a lot of features which really enhance your CW experience on the internet, including the option of hooking up a real CW keyer using serial port interface.
CWIrc enables you to exchange morse code with fellow irc users on the internet, provided that the other users also knows morse code and has installed CWIrc. Though this might sound a little bit of a stretch when thinking the odds of meeting people with both requirements, it is actually not so in reality. You can find those kind of people exactly in #cwirc on irc.freenode.net server who are eager to chat with you in CW.
Both XChat and CWIrc are included in Ubuntu (as well as Debian) software repository, so you don’t need to compile or download separate package from their respective websites.
Note that this post serve as a general reminder to myself as well to others when working on air, especially on a busy repeater. It is just a common sense guideline which I accumulated from old hams over time and it is a good advice to be practiced by all hams.
Hams show their pride through through several ways, one of them is through the displays of their car stickers, so here’s mine :
After some tinkering around with GIMP and graphics around the internet, I decided to settle down with this particular design. Hope that it’ll be distributed around the world soonish :