Lee DeForest Amateur Radio Club

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Learning Center

Here is a place that you can learn more about ham radio, what it is and how it works. Once or twice a week we will put up another interesting topic. If some one doesn't understand maybe you can help. So keep checking back for new and interesting subjects. If you have a subject that you would like to know more about email one of the webmasters and we can help you with it. Have fun and learn at the same time!

If you are a newcomer, welcome to amateur radio. I hope you meet many hams on the air, and find that we all share many interests besides talking on the radio. To get started with using a repeater, first read the instructions that arrived with your handi-talkie or mobile unit. I know it’s tempting to just turn on the radio — but please check the following to make sure that other hams will respond to your call.

Check your CTCSS (or PL) setting. Some repeaters need a low-pitched tone sent by your transceiver to operate correctly. Listen first. Make a list of the ham operators you hear on the repeaters. Note their names, non-ham hobbies and interests, and feel free to break in on the conversation when they pause to identify. That’s much easier than just announcing your callsign and hoping someone, somewhere listens at the same time.

After some experience operating via repeaters, please try simplex operations — or single-frequency non-repeater radio. With a roof-top antenna, and five watts from a handi-talkie, you can talk to other VHF-FM hams on two meters up to five miles away most of the time.

Switch your radio to 145.420 MHz in the two meter band. Ask, “Is this frequency in use?” If no answer, then say “This is <your callsign> listening. Any simplex stations on the air tonight?”

Or, “CQ CQ CQ — This is <your callsign>”, then pause for an answer for about 30 seconds, then repeat.

Please remember, 145.420 MHz must remain a calling frequency. When you succeed in receiving an answer to your call,  change to one of the other simplex channels listed in our directory. That will free the frequency for other hams’ conversations.

The 52.525 MHz FM channel can surprise you with answers from hundreds of miles away.  Please move off of 52.525 MHz, though, when you get someone on 52.525 MHz. 52.525 is actually the "National FM Simplex Frequency."  So QSOs are permitted not just calling. 

Finally, for close-in work 446.86 MHz simplex works great for camping trips, talking to ham friends across the local mail , or within buildings. You will need only a short antenna and low power (300mW) for excellent short-range work. The following link is to Radio Reference To Southern California, Repeaters: http://rptrlist.w6jpl.ampr.org/

This site is a great way to learn before you take your test

Raspberry Pi is about the size of a credit card, but yet is a fully functional computer

EchoLink® software allows licensed Amateur Radio stations to communicate with one another over the Internet, using streaming-audio technology.  The program allows worldwide connections to be made between stations, or from computer to station, greatly enhancing Amateur Radio's communications capabilities.  There are more than 200,000 validated users worldwide — in 151 of the world's 193 nations — with about 5,200 online at any given time.


Aids To Understanding HF Propagation Numbers
and Using HF Beacon Tracking Programs