DCTL Antenna

Here’s an interesting antenna that I would like to try out some day, made from 300 ohm twin-lead.

73, Al

Universal Time

Suppose you want to schedule a contact with a ham in another part of the world, and you tell him to meet you on 14021 khz at 8 pm Thursday January 20th, 2011. Unless he is in the same time zone or in one close to yours, then he may have trouble figuring out what time you will be on the air calling him

Take a look at a chart of local times to get an idea of the problem he may face. If he is in Africa, then how does he figure out what you mean by 9 pm on Thursday night? The way to avoid this problem is use Coordinated Universal Time (abbreviated UTC). This is the time standard by which the world regulates clocks and time.

Time zones around the world can be expressed as positive or negative offsets from UTC as in this list; UTC replaced GMT as the basis for the main reference time scale or civil time in various regions on 1 January 1972.

I am in the Eastern Time zone in Canada, in winter, UTC = EST + 5 hours and in summer, UTC = DST + 4 hours. So for our contact, I would tell the other ham that I would meet him on 14021 khz at 0100 UTC Friday January 21st, 2011. We would not be confused about what time to meet and if conditions are right, then we would be able to complete the contact as scheduled.

Moral of the story… use UTC time for ham radio, not local time, it helps to avoid time confusion.

Ref: Current US Time

73, Al

555 Code Oscillator


This is the circuit diagram I use for a code oscillator used to teach adults at Community Living here in St Thomas the morse code. Along with Floyd VE3ONF and Terry VE3TEH, we have been practicing Morse Code there for a few years. They seem to enjoy it – none of them will ever be able to copy code faster than one word per each 5 minutes, if that, but they enjoy meeting with us and playing with the code once a week.

73, Al

QST Quickstats

from QST January 2011 p. 128
What is your comfortable CW receiving speed?

None – I don’t operate CW – 27%
1 to 5 wpm – 11%
6 to 10 wpm – 15%
11 to 20 wpm – 25%
21 to 25 wpm – 14%
26 to 30 wpm – 5%
31 wpm or highr – 3%

Interesting, eh? Not as many higher speed operators as I thought there might be.

73 , Al