Izbornik Zatvoriti

WCW2016 – World Castles Weekend in Uzice, Serbia

Skraćena veza: https://pedja.supurovic.net/veza/8404

For this year World Castle Weekend I activated Old fortress in Uzice (WCA YU-00023, JN93VU, WAS ST03) using my call sign YT9TP/P. Again. Activation was not announced, as usual, and served as surprise for fellow hams chasing WCA points. I had great help from Goran YU4RAA who participated in antenna and station setup.


Weather prognosis was not ideal. It was expected to have some showers which reduced our options of station location. Instead of setting it on top of fortress which would provide high point and lot of clear space, and no protection from bad weather, we decided to go safer way and settle at only space that can be used as shelter. […]
[ ... vidi ceo članak ... ]

Iron Powder Toroid Cores Color Codes

Skraćena veza: https://pedja.supurovic.net/veza/8352

Iron Powder Toroid Cores part numbers are presented using format Tddd-m where dd is core diameter in tenths of inch and m is material grade. Also, cores are color coded to represent material grade.

Material grade defines frequency range core may be used for. There is no strict standard for coding but for informal purpose this table can be used.

Color Frequency
0 Tan/Tan 50 MHz – 350 MHz
1 Blue/Clear 150 kHz – 3 MHz
2 Red/Clear 250 kHz – 10 Mhz
3 Gray/Clear 20 kHz – 1 MHz
4 Blue/White 3 MHz – 40 MHz
6 Yellow /Clear 3 MHz – 40 MHz
7 White/Clear 1 MHz – 25 MHz
8 Orange/Clear 20 kHz – 1 MHz
10 Black/Clear 15 MHz – 100 MHz
12 Green/White 30 MHz – 250 MHz
15 Red/White 150 kHz – 3 MHz
17 Blue/Yellow 20 MHz – 200 MHz
42 Blue/Red 30 kHz – 80 kHz


[ ... vidi ceo članak ... ]

Radio-amaterski frekventni opsezi

Skraćena veza: https://pedja.supurovic.net/veza/8193

Radio-amateri su jedini civilni korisnici radio-frekvencija kojima su frekvencije dodeljene na korišćenje besplatno. Frekvencije su im dodeljene u celom radio-spektru što omogućava eksperimentisanje i istraživanje u oblasti prostiranja radio-talasa.


Za potrebe obuke i pripremu za polaganje stručnih ispita za radio-amatere, pripremio sam, pregled radio-amaterskih frekvencija (). U njemu se nalaze naznačeni radio-amaterski opsezi, podopsezi namenjen za određene vrste rada i naznake koje podopsege mogu da upotrebljavaju radio-amateri prve, druge i treće klase.

U propratnom tekstu dato je i objašnjenje označavanja vrsta rada.

Preuzmite . Dokument je u PDF formatu.

[ ... vidi ceo članak ... ]

YT9TP SOTA activation Bandera (Tornik, Zlatibor) – YU/ZS-023

Skraćena veza: https://pedja.supurovic.net/veza/8176

26. July 2015. Finally, one modest temperature day came after two weeks of very hot weather in Serbia. I saw it as an opportunity to visit mountains and test slowly but steady gathered equipment for outdoors ham radio activities.

I decided to spend nice day activating highest peak of mountain Zlatibor, called Bandera, topping Tornik hill. With height of 1497 meters it dominates area and provides very nice see-sightings.

I asked Filip YT1PRO to join me. I guessed as he is quite fresh licensed operator he would be interested to see some action. And I was right. […]
[ ... vidi ceo članak ... ]