[sdiy] Preventing Radio Ham Interference

[Gordonjcp]

On Mon, Nov 28, 2016 at 11:11:47AM -0800, Sarah Thompson wrote:
> 
> The other question is... why are they running so much power on 2m with a
> beam antenna? You can pretty much get arbitrary line of sight with a 1/4
> wave vertical on about 10 watts. 2m has relatively little knife-edge

Troposcatter.

> propagation so it doesn't bend around structures well, so it's more or less
> limited to line of sight. Their best option is to get the antenna higher,
> which pushes the horizon out much further, and keeping the power down. It's

Four or five hundred miles, easily.

> part of the FCC regs that hams shouldn't transmit using more power than is
> necessary.

FCC regs are irrelevant, and in any case you need a decent ERP for tropo to work.

-- 
Gordonjcp MM0YEQ (and cheerfully breaking all kinds of FCC regulations, every day)