Build grid dip meter adapter coil for antenna analyzer

Skraćena veza: https://pedja.supurovic.net/veza/8706

Antenna analyzer like MFJ-259, MFJ-225, MiniVNA and similar may be used as simple grid dip meter for measuring coils, traps and capacitors. All you need is grid dip meter adapter coil which you may buy (costs for MFJ adapter set is about 30 USD) or make it by yourself for few USD.

If you want to build on your own here are dimensions of original coils sold by MFJ.

Small coil for short wave frequencies: coil diameter 15mm, coil length 15mm, 30 turns of 0.5 mm copper wire wound on PVC tube. Coil inductance should be about 3.6μH. […]
[ ... vidi ceo članak ... ]

CW Communicator

Skraćena veza: https://pedja.supurovic.net/veza/8690

Istražujući programe za učenje Morzeove telegrafije za potrebe obuke u našem radio klubu YU1ABH, naišao sam na jedan prilično interesantan program – CW Communicator (CWCOM). Autor programa je Džon VK1EME. Ovaj program omogućava da koristeći telegrafski kod komunicirate sa drugim operatorima preko interneta. Naravno, svrha programa je učenje jer veze održane preko Interneta se ne smatraju pravim vezama. Smatram da ovaj program može biti izuzetno koristan prilikom obuke mladih telegrafista jer im omogućava da uz pomoć računara i Interneta mogu da vežbaju telegrafiju i održavanje veza na način koji je vrlo blizak radu na radio-stanici.

Vezu sa drugim operatorima možete ostvariti tako što ćete direktno povezati programe koristeći IP adrese računara. […]
[ ... vidi ceo članak ... ]

Better Syncing Windows With Atomic Time Server

Skraćena veza: https://pedja.supurovic.net/veza/8659

You may have need to have accurate time on your Windows PC. Windows already does have support for network time server synchronization and with recent versions ti should be set and turned on by default meaning if PC has access to Internet it will synchronize its internal clock with some of the world atomic clocks.

However, it might be good enough as synchronization is set to rather infrequent time periods, one day or even whole week. For some purposes it is needed to have clock synchronized more frequently. I need it for working Amateur Radio digital modes.

There are number of third party applications that can be installed on Windows PC as SysTray applications or services and allow more precise time synchronization. […]
[ ... vidi ceo članak ... ]

Radio Amateurs in War

Skraćena veza: https://pedja.supurovic.net/veza/8628

March 24th. Year 1999. The very end of the 20th Century. With the nightfall strange sounds were heard in the sky and at 19:45 – explosions. Bomb fell on Yugoslavia, small sovereign country in Central Europe.

One word is on everyone mind – WAR!

Yugoslavia was attacked by NATO military alliance led by United States of America, the country Yugoslav people always considered as one of the best friends. At first, people were fighting mixed feelings caused by unjustly accusations, vicious attacks and betrayal of considered friendly and ally countries and disbelieve that what happens is at all possible as that was act against international law. […]
[ ... vidi ceo članak ... ]

Namena radio-amaterskih repetitora

Skraćena veza: https://pedja.supurovic.net/veza/8540

IARU REGION 1 – PRINCIPI PLANIRANJA VHF, UHF I MIKROTALASNIH OPSEGA

FM repetitori su namenjeni kao komunikacioni servis mobilnim radio/amaterskim stanicama (uključujući i ručne stanice). Po potrebi, mogu biti instalirani i za poboljšanje dostupnosti stanica u planinskim područjima.

Oni nisu namenjeni da omogućuju DX veze, stoga njihov domet u uobičajenim uslovima propagacija treba da bude ograničen.

Broj instaliranih repetitorskih stanica treba da bude određen prema
– potrebama za regionalno pokrivanje
– očekivanom broju korisnika

Ne treba da bude ustaljeno da se FM repetitori upotrebljavaju kao kanali za ćaskanje za fiksne stanice. To se kosi sa njihovom namenom.

Izvor: INTERNATIONAL AMATEUR RADIO UNION REGION 1, VHF MANAGERS HANDBOOK, Version: 7.0. […]
[ ... vidi ceo članak ... ]

Osvojena diploma Servantes

Skraćena veza: https://pedja.supurovic.net/veza/8512

4O/YT9TP Cervantes SilverUnija radio-amatera Španije je 400 godina smrti španskog pisca Miguela de Servantesa obeležila diplomom Servantes. Za vreme odmora u Crnoj Gori, radeći u portabl uslovima, održao sam dovoljno veza sa radio-amaterskim stanicama aktiviranim specijano za ovu priliku da osvojim ovu diplomu.