(meteorobs) Result of short test with Pilot Carriers

[Raydel Abreu (CM2ESP)]

Hi Thomas,

Well, not yet on 54.310. I would like to, but first I have to see if the
signal in 55.250 from a transmitter 10 miles away doesn't interfere with
54.310. It will perhaps be better chance at 60.310 because Channel 3 is not
in use in Havana, so interference should be less.

In a previous e-mail, I don't know if it pass through the reflector, I was
commenting about pilot carriers are 12dB lower than signal power according
to ATSC Format Description. So a 30kW ERP station is similar to a 1.5kW ERP
carrier.


Thanks for the tip.

Raydel


2013/9/4 Thomas Ashcraft <ashcraft at heliotown.com>

> On 9/4/13 6:40 07000, Raydel Abreu (CM2ESP) wrote:
> > Hello again,
> >
> > Well, I yesterday tried two hours with Pilot Carriers. I used Channel
> > 7 in 174.310 MHz. With the low power of the pilot carriers I was
> > receiving the direct signal with moderate strength even when the
> > closest transmitter distance should be 185 Km, Quite close but direct
> > signal should not be copied easy, but there it was.
> >
> >
> >
> > Raydel, CM2ESP
> > Havana, Cuba.
> >
> Hi Raydel,
>
> Have you tried 54.310 MHz CW?
>
> Meteor trails are more reflective at lower MHz, say below 100 MHz. At
> 174 MHz it will take a larger radio fireball to reflect radio waves
> which makes receptions much less frequent.
>
> Thomas in New Mexico
>
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