15M trap cols

The trap coils are rewinded with 2.00 mm wire.

Also Ok and ready to put it back.

Leszek (SP3DOI) and Krystyna (SP3HDB)

Leszek (SP3DOI) and XYL, Krystyna (SP3HDB) started their trip around the world since 30 November, 09. They are arrived Hong Kong in the afternoon of 4 December and scheduled to depart to the next country (Australia) on 6 December. I told them that is the best time to be here because the 2009 East Asian Games will have the opening ceremony on 5 December evening, set in Victoria Harbour. Also, have Fireworks show as well. Fireworks will be roughly at 2115hrs and last for 15 minutes, local time. He took my advice and went up to the Victoria Peak and has dinner there and watches the big show.

On 6 Dec, Leszek and Krystyna took the MTR to Fanling Station, met up with me and my XYL, Pansy. After lunch, back to my QTH and Les spent an hour in my shack to operate the special event call “VR2009EAG”, made about 50 QSO on 17M, majority stations from Europe.


Then I drove them to the Airport in the late afternoon.

I am happy met up personally with Les after many QSOs in the past years, especially while he was the operator in most major Expedition.

http://www.sp3doi.com/expeditions.html

Create 318Jr 10-15-20M Tri-bander

Early this year, I replaced the driven element trap coils (10/15M)of the Create 318jr tri-bander becasue of high SWR. Today I have the same problem again, so I start to check what happen inside and root out problem sources.
The 10M trap looks fine:

However, the 15M trap coil spacing is not in equal spacing, so I removed the winding and found the coil form was melted.


I need to find suitable time and method to fix it. For the time being, running QRP with the Fritzel vertical.

12M Three Element Yagi

Today I put up the home brew 24MHz three element yagi. The SWR is around 1.2 centre at 24.930 , now is waiting for some DX ...

Six Meter with SB-200

Recently I performed several enhancement work to the SB-200 which converted to Six Meter many years ago, including:

1) change the ventilation fan to box fan, it gave out more air flow towards the 572B
2) change the plate choke, Teflon rod with 0.6mm wire , 60 turns.
3) improve input circuit to achieve as low as 1.1 . It worked very fine and power output significant improving, with 65W in , power output reached 600W.. acceptable result.

JIDX Contest 2008 Phone

I am very happy to received a very nice award and Plaque for the JIDX Phone Contest 2008, in the category 14Mhz Single Operator High Power.

Headset with Switch Box

Recently I am using a computer headset for my radios, it works great and have good audio report around. I also made a small box to switch over three radios, that help not to have too many microphones on the shack table.

Compare with my Heil Proset Plus, it is more light weight and comfortable, especially in the hot and humid weather here in Hong Kong.

However, the mic input level need very careful adjust because of high level output from the electret condenser microphone.