Monday, June 11, 2007

Is 35MHz safe? Piet le Roux

Is 35MHz safe? Is any radio communication 100% safe: no. But is it safe enough: yes. Even 2.4 GHZ could have problems when we move into the next solar peak (2010 to 2013).The 35MHZ can also experience interference from very far away stations during peak solar activity, hams have communicated around the world on 100mW during high solar activity. Although a solar flair are more likely to strike during the peak period of a solar cycle it can happen at any time and it does generate a lot of noise on 2.4GHz.

But I have only once experienced interference on 35MHz and that was when a novice switched on his TX without checking. Luckily his antenna was not out and I still managed to land.

The problem with scanners is that they are made to receive over a very wide frequency range and there for can not have very good front end filtering. So if it receives an unwanted signal in the 35MHz band it could be an "image" that it's seeing of signals on other channels and there maybe nothing there.

Cheers Piet le Roux

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