Ruangan Infomasi

Segala maklumat aktiviti boleh di beritahu di kepada 9w2rev di talian 0126196929 atau .

Sila beritahu 3 hari awal sebelum di update di ruangan ini Sekian harap maklum.

de 9w2rev


Class perbincangan radio amatur untuk exam Rae bermula pada minggu ini :

Tempat: Rumah 9w2rev Taman Pelangi Semenyih

Masa : 9 malam - 10.30malam

Setiap hari Rabu malam Khamis bergantung pada keadaan.

Pengajar :9w2rev

Kepada rakan swl berminat sila dtg ..

Tempat terhad kepada 10 kerusi ..

Berminat sila contect Mazlan 9w2rev di talian 0126196929


V66ham telah mewujudkan satu grouping dalam facebook {new media} selaras dengan perkembangan teknologi di internet . Kepada rakan rakan v66ham community boleh join v66 community di facebook ..sila klik di link ini :-!/group.php?gid=112619732115917&v=info

Aprs Tracing ../ Anda bila nak join aprs

Kedai Amatuer

Sunday, January 3, 2010

HomeBrew Dummy Load project from 9w2mjr aka Bro Misai ..

Nie cara dia dalam bahasa Inggeris cnp ..

This idea came about after listening to all you Amateurs tuning-up your amplifiers while on-air.
It always happens right in the middle of receiving a good SSTV picture!

This may give you the idea of building your own (cheap) dummy load and do your tuning through this.
You can subsitute the shown value components to handle your mega-watt amplifiers.
For example, you can use twenty, 1K (1000-ohm), 3W or 5W resistors connected in parrellel.

The components shown here are two 100-Ohm, 5W resistors connected in parallel and submerged in a tin of oil.
This will more than handle the few Watts output from the transmitters that QRP'ers prefer.

Start by drilling a hole hole in the lid of a 250ml paint tin to suit the SO259 connector. Solder around it to prevent any leakage when the oil is added. Next, a leg of each resistor should be soldered to the metal lid and the opposite ends both/all soldered to a length of stout copper wire which is taken to the center connector of the socket.

With a multimeter, measure across the SO259. There should be a reading of 50-Ohm's and no open/short circuits.
If all is well, fill the tin to the brim with engine oil and attach the lid firmly in place.
At this point you'll probably notice that oil will splurge over the sides so don't do this on the kitchen table!

If you don't fancy the mess of oil it's also possible to fill the tin using sand. This will also dissipate
any heat generated by the resistors. I've not tried this method but there's no reason why it shouldn't work

Now perhaps you'll build one and do your tuning-up thru it - especially you, G1---!!!
(We know where you live!)


Dalam dia

close of v66homebrew dummy load

Homebrew Dummy loads 50ohm  product v66


Nie salah satu project bro misai hanya boleh di dapati ..Sesiapa berminat boleh call di freq v66...

Map localan Semenyih Beranang