[CQ-Contest] How blatant can you get?
ua9cdc at gmail.com
Sat Oct 15 13:07:06 PDT 2011
I fully agree that prevention of excessively wide signals rather then power
control is the way to go.
What I would argue with is that proving it would be easy. My noise level
jumps by 5 S units across the entire band whenever my neighbor pushes PTT
just because of the wide band noise his equipment radiates. But someone 1000
miles away says that my neighbor's signal does not occupy more bandwidth
then it should.
73, Igor UA9CDC
>> Matts, with 59 plus 60 signal no one can sound perfect. Most modern radio
>> have only 30-35 db of IMD on TX. "Linear amps" often make it even worse.
>> I were on the CC I would allow any power as long as the occupied
>> is the same as that of a QRP station.
> I'm not sure it will do much good to apply common sense or careful thought
> to solving problems.
> Here are other thoughts:
> How many people know how to measure real power? I bet most people think
> power is what the forward power is. When was the last factual educational
> article on this?
> How many people know what their meter tolerance really is? When was the
> last factual educational article on this?
> If someone is 60 over nine, people should learn to use attenuators. That
> is a problem with not using proper receiver sensitivity. Almost anyone
> would have a noise floor of S7 or more from too much sensitivity in the
> receiver, and perhaps higher.
> Let's say someone is 60 over nine, and others are 30 over nine. Does
> anyone think it likely they are running 1000 times the common power of 1-2
> kW? If someone is running common CB radio USA power of 15 kW, then a 1500
> watt station would be 50 over nine. Why would anyone do that? It makes no
> 3 dB or even 10 dB makes no difference to anyone except at low power, or
> when signals are weak. And it makes no difference at all unless they can
> hear what answers them. If people want to be stupid and run 6 dB or 10 dB
> more, there is no way to prevent that.
> What can easily be proven and prevented are excessively wide signals.
> 73 Tom
More information about the CQ-Contest