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That started putting restrictions on amateur radio, though I can't remember the timeline. When the Titanic sunk in 1912, that caused radio regulations to go into place. Out of that, the various radio services were born.

2200 meter transceiver how to#

Everyone was an amateur to begin with the newspapers would apparently include instructions on how to build radios. Amateur radio exists because once Marconi spanned the Atlantic in December of 1901, the public got interested. The higher frequencies weren't seen as useful. IN the early days of radio, everything was low frequency. I think Rudy and the 500 KHz guys are doing a great service as an example of promoting learning. The concept involves learning because of the rules, not learning how to transgress the rules. I suppose there is some potential for learning there, but not like the 630 meter project. Very often, I comment in the Homebrew Radio section of ARF, when I notice folks trying to run a 6L6 tube in a 'Part 15' transmitter. That's why I like to build my own receivers, both solid state and tube.

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Today, most of us run a Japanese or Chinese-made 'appliance,' chock full of ICs with functions we don't understand. He asked me to call his family by phone to let them know he was OK. I remember as a kid in the '60s, contacting a missionary in So. Yes, there was a strong social aspect and early hams had a 'traffic net' designed to relay personal messages, using Morse, around the country. The original concept of ham radio involved building your own equipment and learning about electronics in the process. The purpose is experimentation and learning. Of course this brings up the question, what exactly is the purpose of this band, given the severe limits? With a transmitting power limited to five watts (and effective power therefore apparently about a watt and a quarter), it's obviously a moot point for any receiver a block away or more. I was the one who questioned whether or not these could interfere with the LO's in AM sets. The second reason is that there won't be many people using these frequencies due to the difficulty of building effective transmitting antennas. Perhaps, my location is just too electrically noisy to hear these weak low frequency signals, even though I can DX TIS stations on 1610 kHz and have even once detected a pirate on 1710 kHz. I attempted to listen to the experimental activity on 500 kHz, and I was never able to detect any carriers there.

2200 meter transceiver license#

Despite the impressive physical size of this system, he calculated that the radiating efficiency of this antenna was only about 25% at 500 kHz (computer modeling of the antenna system was required to obtain an experimental license from the FCC, since power limits were set in terms of effective radiated power, rather than transmitter output power). Steverns had built a top-loaded vertical antenna system by stringing wires between two 100' radio towers on his property and down to a weatherproof tuning unit located between the towers. Some years ago, I attended a presentation by Rudy Steverns N6LF on the experimental amateur radio activity that was taking place near 500 kHz. Effective radiated power is being limited to 5 Watts. The first reason is that these will not be strong signals. I believe that one can very safely say that the answer is NO. The question came up whether there could be interference issues due to signals in this frequency range leaking into the IF stages of AM radios. I had not heard the news about the 630 meter band being made available to US amateur radio operators until just a few days ago (on another thread on this forum).