August 13, 2013

FCC Technician Exam Question Of The Day (T8D05)

Q) Which of the following emission modes may be used by a Technician Class operator between 219 and 220 MHz?

A) Data

NJ2X Notes:
The amateur allocation at 219-220 MHz is secondary to the Automated Maritime Telecommunications System (AMTS).



August 12, 2013

FCC Technician Exam Question Of The Day (T8D06)

Q) What does the abbreviation PSK mean?

A) Phase Shift Keying

NJ2X Notes:
PSK31 is one of our favorite modes.  It is very narrow and works in all kinds of conditions with modest power and antennas.  Free amateur radio software like Ham Radio Deluxe have also made it very easy to get started with PSK31.

Phase-shift keying (PSK) is a form of digital modulation that transmits data by changing, or modulating, the phase of a signal.

Terminal Node Controller (TNC) used with computer for PSK communication


August 10, 2013

FCC Technician Exam Question Of The Day (T8C09)

Q) How might you obtain a list of active nodes that use VoIP?

A) From a repeater directory

NJ2X Notes:
The ARRL publishes an excellent repeater directory.  It is available in both print and electronic forms.




August 9, 2013

FCC Technician Exam Question Of The Day (T8C11)

Q) What name is given to an amateur radio station that is used to connect other amateur stations to the Internet?

A) A gateway

NJ2X Notes:
Echolink, IRLP, D-Star, WIRES, AllStar, and others are all methods of linking amateur radio stations to the internet.



August 8, 2013

FCC Technician Exam Question Of The Day (T8D02)

Q) What does the term APRS mean?

A) Automatic Position Reporting System

NJ2X Notes:
APRS (Automatic Packet Reporting System) is a system developed by Bob Bruninga (WB4APR)  which uses amateur radio to transmit position reports, weather reports, telemetry, and messages between users.  A very useful APRS related tool is Google Maps APRS.



August 6, 2013

FCC Technician Exam Question Of The Day (T8D08)

Which of the following may be included in packet transmissions?

A. A check sum which permits error detection
B. A header which contains the call sign of the station to which the information is being sent
C. Automatic repeat request in case of error
D. All of these choices are correct


NJ2X Notes:
Packet radio is a technology used to transmit data via radio communications links.



August 5, 2013

FCC Technician Exam Question Of The Day (T8D10)

Which of the following can be used to transmit CW in the amateur bands?

A. Straight Key
B. Electronic Keyer
C. Computer Keyboard
D. All of these choices are correct

NJ2X Notes:
We will share with you a secret that all avid DX'ers already know.  Morse Code is an incredibly effective mode for DX (long distance) contacts.  You can make contacts with CW in poor conditions and with weak stations that you simply cannot do with any other mode.  Operating with CW also gives technician license holders access to the HF bands.

J-38 straight key

August 2, 2013

History of the Bell Rotator


Howdy Hams,

Looking for an interesting and informative webpage regarding the history of the bell rotator?  Look no further:

http://www.rotor- doc.com/history. html


Good DX and 73, NJ2X



July 26, 2013

IOTA Contest 2013

The annual IOTA Contest is here.  This is a great opportunity to work DX. The contest starts on 1200UTC Saturday 27th July and runs for 24 hours until 1200UTC Sunday 28th July 2013.

 A useful list of activations can be found at http://www.ng3k.com/misc/iota2013.html. 


Good DX and 73, NJ2X




Jean Shepherd (K2ORS) Birthday July 26, 1921

Today we remember the great radio personality, writer, and storyteller Jean Shepherd (K2ORS) who was born on this day July 26, 1921.

Jean Shepherd

July 25, 2013

Skyview Radio Society annual Swap N Shop! - August 25, 2013

August 25th 2013 8:00 AM to 1:00 PM  The best little hamfest in the world!
 
Skyview Radio Society annual Swap N Shop! ARRL Western PA Section Convention!
Breakfasts and lunches served – www.skyviewradio.net

Location:
Skyview Radio Society clubhouse grounds
2335 Turkey Ridge Road
New Kensington, PA 15068

Talk-in: 146.640- 131.8pl.
 
Contact: Pat Cancro, NK3P jpc2@psu.edu

July 19, 2013

Visualization of Frequency

“If you want to find the secrets of the universe, think in terms of energy, frequency and vibration.”
― Nikola Tesla


Four minutes of rather interesting video showing patterns formed by salt on a metal plate excited at various frequencies.

July 18, 2013

Jefferson's decalogue of canons for observation in practical life

Decalogue of canons for observation in practical life.
  1. Never put off till tomorrow what you can do to-day.
  2. Never trouble another for what you can do yourself.
  3. Never spend your money before you have it.
  4. Never buy what you do not want, because it is cheap; it will be dear to you.
  5. Pride costs us more than hunger, thirst and cold.
  6. We never repent of having eaten too little.
  7. Nothing is troublesome that we do willingly.
  8. How much pain have cost us the evils which have never happened.
  9. Take things always by their smooth handle.
  10. When angry, count ten, before you speak; if very angry, an hundred.