Monday, December 26, 2011

Hexbeam


Today I put up the HEXBEAM ( from K4KIO ), it works fine.

Thursday, December 15, 2011

Re-arrangement of antennas

Due to some un-expected reason, I need to dismantle all my antennas last week. At the moment, only maintain one vertical antenna for 10/15/20M. for the time being, some re-arrangement work is underway including a winch-up pole for the new five band antenna. I hope all the work can complete during Christmas holidays, if not , then early next year.





In future, my signal may not be as good as before, due to the down scale of antenna system.

ARRL RTTY Roundup 2011

ARRL RTTY Roundup 2011

Friday, December 2, 2011

ARRL 10M Contest 2010

ARRL 10M Contest 2010

Monday, November 7, 2011

World Wide RTTY WPX Contest 2011

World Wide RTTY WPX Contest 2011

Friday, September 23, 2011

Antenna Mast Bracket


I need to strength some of the antenna mounting on roof, so ordered four pcs of mounting brackets, 304 stainless steel type of material, all looks good.

Saturday, September 17, 2011

BV100 Award - 中華民國建國一百年獎狀






Received three nice BV100 awards (中華民國建國一百年獎狀) issued by Amateur Radio Taipei for celebrating the centennial of Taiwan. Namely, they are:

1) VHF award
2) Tri-band award
3) Dual-mode award

Apply for the award by filling the registration form on line.

http://www.bv100.tw/EN/Award/Award.aspx

No QSL cards are required and the award is free of charge.

Tuesday, August 23, 2011

2010 Oceania DX Contest Certificate

As indicated from the Oceania DX Contest Committe that the certificates have been published on-line as pdf files for us to download. Today I download my certificate for reference. For sure, will participate again this year.





Tuesday, August 16, 2011

L-Match Antenna Tuner - Completed




Project completed. It become my daily use antenna tuner, very nice.
So far, so good.I have been able to match all my antenna up on the roof, and there is absolutely no signs of any component heating or arcing.

Saturday, August 13, 2011

LY2SA - #158 on Six Meter

LY2SA worked on 25 June 2011 at 0655z. Vidas returned me a nice QSL. Now my Six Meter Score going up to #158 - all confirmed.


Tuesday, August 9, 2011

L-Match Antenna Tuner

I always needed a "HEAVY DUTY" antenna tuner that could take about 2KW to match with my Heathkit SB-220. I have the Ten-Tec 238B which purchased many years ago, working fine without any problem. However, like to have another one connect to my second amplifier.

Since I have the 238B (L-Match) and thinking to use other tuning method. Finally I selected the modified "L-Match" network again for the reason that it has only two adjustable parts, one inductor and one capacitor, it make the tuning more easier.

The tuning capacitor is a Jennings 500pf vacuum capacitor and the roller induction is from Jonhson 229 series (10uH), it is more than enough because I do not operate low band much.

The case is from China, very nice and heavy duty, most important is very cheap. (around US$20 including shipping) and size is 110mm*275mm*250mm (H*W*L).

With some effort over the weekend, it is almost complete except for some hardware, like the tuning knob and extender rod for the antenna switch.

Tuning is very easy and all my antennas from 10M-40M.


Tuesday, August 2, 2011

KN-Q10A QRP Transceiver from BA6BF

Recently I bought a very nice QRP Transceiver ( KN-Q10A) from BA6BF.
It is a four band (80/40/20/15M) 15W CW/SSB gear, very nice collectable radio.


Wednesday, April 6, 2011

Front End Saver with 80M Pre-amp



Further to my recent DIY project of the "Front End Saver", I make another one together with 80M pre-amp in one single PCB. It also can switch over to three radios. The box was completed yesterday and very pleased with the performance and high gain / low noise level of the 3SK88.
It is easy to add 160M in with appropriate tuning capacitor and control realy and switch. However, I don't need it at the moment.

Wednesday, March 30, 2011

ARRL International DX Contest 2010 - Phone

I almost forgot in 2010, again the first place in Hong Kong for single operator 20 Meters in the ARRL International DX Phone Contest.
The award certificate came in very late this time.

Tuesday, March 29, 2011

JH1BED/VR2RJ


Taka-san (JH1BED/VR2RJ) is now working in ShenZhen and his QTH is closed to Futain Check Point. He sent me email last week and we arranged eyeball QSO. Last Sunday (27 March), I picked him up at the Fanling Station at around 11:30 am. After lunch , went back to my QTH and he operated CQ WPX SSB contest for about 2 hours. He worked 150 stations. We look forward to have more gathering in the future time.

Wednesday, March 23, 2011

Front End Saver


I use a separate receive antenna for 80M, to eliminate the possibility of blowing out the radio’s front end, I made the ‘front end saver’ followed the circuit designed by KD9SV. It disconnect the receive antenna during transmit, ground the receiver input when transmitting thus keeping RF out of the radio and eliminating the chance of blowing the radio’s front end.

The box installed with a switch to select three radios, I also reserve some space inside the box for a low noise pre-amp.

Sunday, February 20, 2011

FT-736 lost audio output


My FT-736R suddenly lost audio output (only the scanning beep OK).
I checked the AF unit Q06 upc2002 pin 5 have only 2V. Looks like the IC failed and shorted out the 1Ω,1/4W resistor (fuse), 13.8V at the supply side.
Then I replaced the 1Ω, the sound come back. Well, I am a little bit lucky this time, not the upc2002, otherwise need to do more soldering work.

Monday, January 10, 2011

80 Meter DX


I have set up the 80M antennas this winter and hope to make some DX QSOs on 80M. Noise is a big problem around my QTH. So I need to use the 0.75 Meter coaxial loop for receiving. The input signal level is very low, but with good S/N ratio. Transmitting using the Butternut HF2V vertical, it perform very well. Please look for me daily on 3.797 Mhz +/-