W8JK Antenna “Moxon Variant”

You can find more details here : https://f5npv.wordpress.com/w8jk-moxon/ Marc has build this antenna for a while and according the emails echanged with him , find hereafter the details of this tiny antenna . Marc has aslo performed some tests and compare the W8JK with a COBWEB antenna installed in his location. -He had choosen the

Carbon fiber Fishing Pole: Vertical antenna

Carbon fiber vertical antenna (9m long) Carbon fiber pole cannot be used with a wire since the carbon fiber properties as a conductor will interact with your wire. Carbon fiber is not offering a good resistivity therefore after tweaking a bit the pole to you can bring down the resistivity significantly . This kind of

Beach on the Air BOTA 12th April 2024

On the 12th April 2024 i was at TANJU BATU beach – Brunei Darussalam QSO map from my BOTA activity yesterday: Special EQSL send to QRZ.COM emails : -162 QSO -CW about 113 QSO (from 5w up to 40w) -FT8 about 49 QSO (5w only) During the morning the propagation was really good Short path

USDX V1.02 Enhancement (April 2024)

All details below are related to the V1.02 USDX PCB . 2 Mods are part of the post in my blog : -Voice quality improvement -Sideband Supression and receiver sensitivity enhancement (Dynamic range) Work yesterday on firmware cleaning en enhancement . The modification improve a lot the voice quality , therefore and unfortunately the USDX

Homebrew SDR Transceiver

SDR transceiver QSD/QSE , 3w output. This transceiver is associated with a tube amplifier to provide about 50 to 70w output . The LCD display is providing features for calibration and few setup . The frequency , mode , TX/RX , SWR, output power and a bargraph for RX level are also displayed (it is

Propagation Status and check using FT8 with Hermes Lite 2

The main purpose of FT8 and WSPR propagation checking. Propagation Status and check using FT8 with Hermes Lite 2 TRX, SPARKSDR , Gridtracker and a websocket UDP script from K1RA op Andrew is an easy way to do it. To perform propagation check, i am using the Hermes lite 2 which is able to monitor

New Random long wire antenna

Almost 6 weeks scratching my head to find the best antenna for lower Bands. Previously my Vertical DX commander was working really great for lower bands but unfortunately i was obliged to remove it to install the Telescopic mast + Hexbeam . i have tried to re-locate the Vertical antenna but it was a disaster

Hexbeam up on the air

Hexbeam Antenna from EAXBeam is up in the sky . Many thanks to BDARA (Brunei Amateur Radio Association) and Friends for assisting and the hard/team work. A special thanks to 9M8LJW for the nice homemade telescopic mast. The Telescopic mast can be up to 15m high but i keep about 13m high from now. I

FT8 vs CW and SSB

I am mostly using CW or SSB to communicate on HF bands . I am using FT8 only when necessary and it is not often in fact. Mostly and about 24/7 i am using FT8 to monitor the propagation with my Hermes Lite and using SPARK which is able to monitor up to 10 frequencies

PA0FRI Balanced Universal ATU

I am using a W8JK 2 elements beam antenna feed with a ladder line or 450 Ohms twin lead. The antenna is working from 14Mhz up to 50Mhz . Previously i was using a Mac Coy ATU which is is providing great results but unfortunately before moving to Brunei Darussalam , i gave the ATU