Re: LF: Re: 8kHz of spectrum

[Gary - G4WGT <g4wgt@tiscali.co.uk>]

Hi to all LF,

I must agree with Jim & Pete, it is a positive step even though the ERP may be less than our present NoV allocation. In considering the limits proposed we must realise that if accepted & implemented it is a valid starting point. Just look how the NoV (SRP) improved after only a short time. As for the ERP limit, I can barely make 1 watt ERP at present so the power restriction is not an issue here either, more an experimenter than a DX chaser.

I also join others in thanking those who have worked hard on the proposal for a permanent international allocation.

73, Gary - G4WGT.

On 2 November 2011 22:58, James Moritz <james.moritz@btopenworld.com> wrote:

Dear LF Group,

Well, I think this is a positive development - the only minor disappointment is the reduction in maximum ERP to about 3W.

As for the choice of frequency, the maritime people have a plan for a sort of  "super Navtex" using OFDM modulation with a bandwidth of 10kHz centred on 500kHz. It may be that this is just a pipe dream, and/or a way to justify continued primary user status at 500kHz. But if it ever does come into existence, it will certainly be using vastly higher powers than amateur stations, and the noise sidebands will extend well beyond the actual signal bandwidth due to "spectral re-growth" in the TX PA. So it will be good to have a significant difference in frequency between ourselves and the noisy things. I expect all those REAL amateurs will manage to reduce their TX frequency by 5 percent somehow ;-)

Cheers, Jim Moritz
73 de M0BMU